PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY INC
424B5, 1996-04-23
MORTGAGE BANKERS & LOAN CORRESPONDENTS
Previous: SHELTER COMPONENTS CORP, DEF 14A, 1996-04-23
Next: PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY INC, 424B5, 1996-04-23



<PAGE>
SUPPLEMENT
(TO PROSPECTUS SUPPLEMENT DATED JULY 29, 1992 AND PROSPECTUS DATED MAY 19, 1992)
 
THE PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY, INC. [LOGO]
 
                                     SELLER
 
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1992-26
         PRINCIPAL AND INTEREST PAYABLE MONTHLY, COMMENCING IN MAY 1996
 
                    VARIABLE RATE(1) CLASS A-18 CERTIFICATES
                     (1) ON THE CLASS A-18 NOTIONAL AMOUNT
                              -------------------
 
    The  Series 1992-26 Mortgage Pass-Through  Certificates (the "Series 1992-26
Certificates") are the Series 1992-26 Certificates described in the accompanying
Prospectus Supplement dated July 29, 1992 (the "Prospectus Supplement") and  the
accompanying  Prospectus  dated  May  19, 1992  (the  "Prospectus").  The Series
1992-26 Certificates consist of one class  of senior certificates (the "Class  A
Certificates")  and  two  classes  of subordinated  certificates  (the  "Class M
Certificates"  and   "Class  B   Certificates,"  respectively).   The  Class   A
Certificates  consist of twenty subclasses  (each, a "Subclass") of Certificates
designated as the Class A-1, Class A-2,  Class A-3, Class A-4, Class A-5,  Class
A-6,  Class A-7, Class A-8, Class A-9, Class A-10, Class A-11, Class A-12, Class
A-13, Class A-14, Class A-15, Class A-16, Class A-17, Class A-18, Class A-R  and
Class  A-LR  Certificates.  The  Class  M  Certificates  are  not  divided  into
subclasses. The Class B Certificates consist of four subclasses of  Certificates
designated  as the Class B-1,  Class B-2, Class B-3  and Class B-4 Certificates.
Only the Class A-18  Certificates are being offered  hereby. The Series  1992-26
Certificates  evidence in the aggregate the entire beneficial ownership interest
in a trust fund (the "Trust Estate") established by The Prudential Home Mortgage
Securities Company,  Inc. (the  "Seller")  and consisting  of  a pool  of  fixed
interest rate, conventional, monthly pay, fully amortizing, one- to four-family,
residential  first mortgage  loans having original  terms to  stated maturity of
approximately 15 years  (the "Mortgage  Loans"), together  with certain  related
property.  Certain  of the  Mortgage Loans  may be  secured primarily  by shares
issued by cooperative housing corporations.  The Mortgage Loans are serviced  by
The  Prudential Home  Mortgage Company, Inc.  (in its capacity  as servicer, the
"Servicer," otherwise "PHMC").  See "Description of  the Mortgage Loans"  herein
and  in the Prospectus Supplement and  "Risk Factors and Special Considerations"
herein.
 
    PROSPECTIVE INVESTORS IN  THE CLASS  A-18 CERTIFICATES  SHOULD CONSIDER  THE
FACTORS DISCUSSED UNDER "RISK FACTORS AND SPECIAL CONSIDERATIONS" HEREIN ON PAGE
S1-3.
 
    The  credit  enhancement for  the  Series 1992-26  Certificates  is provided
through the  use of  a "shifting  interest" type  subordination, which  has  the
effect  of allocating all or a  disproportionate amount of principal prepayments
and other unscheduled receipts of principal  to the Class A Certificates for  at
least  nine  years  beginning  on  the  first  Distribution  Date.  See "Summary
Information--Credit Enhancement"  and "--Effects  of Prepayments  on  Investment
Expectations,"  "Description  of  the Certificates"  and  "Prepayment  and Yield
Considerations" in the Prospectus Supplement.
 
    THE YIELD  TO  MATURITY  OF  THE CLASS  A-18  CERTIFICATES  WILL  BE  HIGHLY
SENSITIVE  TO THE RATE AND TIMING  OF PRINCIPAL PAYMENTS (INCLUDING PREPAYMENTS)
ON THE  MORTGAGE  LOANS, WHICH  MAY  BE PREPAID  AT  ANY TIME  WITHOUT  PENALTY.
INVESTORS  SHOULD CONSIDER THE  ASSOCIATED RISKS THAT  A FASTER THAN ANTICIPATED
RATE OF  PRINCIPAL  PAYMENTS  (INCLUDING PREPAYMENTS)  ON  THE  MORTGAGE  LOANS,
PARTICULARLY  THOSE MORTGAGE LOANS WITH A  HIGHER RATE OF INTEREST, COULD RESULT
IN AN ACTUAL  YIELD THAT  IS LOWER  THAN ANTICIPATED AND  THAT A  RAPID RATE  OF
PAYMENTS  IN RESPECT  OF PRINCIPAL (INCLUDING  PREPAYMENTS) COULD  RESULT IN THE
FAILURE  OF  INVESTORS   TO  FULLY  RECOVER   THEIR  INITIAL  INVESTMENTS.   See
"Sensitivity  of the Pre-Tax Yield  and Weighted Average Life  of the Class A-18
Certificates" herein and "Description of the Certificates--Principal  (Including
Prepayments)"  and  "Prepayment  and  Yield  Considerations"  in  the Prospectus
Supplement and in the Prospectus.
 
                                                        (CONTINUED ON NEXT PAGE)
                             ---------------------
 
THESE SECURITIES DO NOT REPRESENT INTERESTS IN OR OBLIGATIONS OF THE PRUDENTIAL
HOME MORTGAGE SECURITIES COMPANY, INC. OR ANY AFFILIATE THEREOF. NEITHER THESE
        SECURITIES NOR THE UNDERLYING MORTGAGE LOANS WILL BE INSURED OR
          GUARANTEED BY ANY GOVERNMENTAL AGENCY OR INSTRUMENTALITY.
                             ---------------------
 
THESE SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES  AND
EXCHANGE  COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION  OR ANY STATE  SECURITIES COMMISSION PASSED  UPON
     THE   ACCURACY  OR  ADEQUACY  OF  THIS  SUPPLEMENT,  THE  PROSPECTUS
       SUPPLEMENT OR THE  PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
                             IS A CRIMINAL OFFENSE.
                             ---------------------
 
    The Class A-18  Certificates are being  offered by PaineWebber  Incorporated
(the  "Underwriter") from time to time  to the public in negotiated transactions
or otherwise at varying prices to be determined at the time of sale. Proceeds to
the Seller from the  sale of the Class  A-18 Certificates will be  approximately
1.77% of the Pool Scheduled Principal Balance as of the Distribution Date in May
1996  without  giving effect  to partial  principal  prepayments or  net partial
liquidation proceeds received on or after the Determination Date in April  1996,
plus  accrued interest from April 1, 1996 to (but not including) April 26, 1996,
before deducting expenses  payable by the  Seller estimated to  be $45,000.  See
"Underwriting" herein.
 
    The Class A-18 Certificates are offered subject to receipt and acceptance by
the  Underwriter, to  prior sale  and to the  Underwriter's right  to reject any
order in whole or in  part and to withdraw, cancel  or modify the offer  without
notice. It is expected that delivery of the Class A-18 Certificates will be made
at  the office  of PaineWebber  Incorporated, 1285  Avenue of  the Americas, New
York, New York 10019, on or about April 26, 1996.
                             ---------------------
 
                            PAINEWEBBER INCORPORATED
                                  -----------
 
                 The date of this Supplement is April 19, 1996.
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
 
    The  Class  A-18  Certificates  may  not  be  appropriate  investments   for
individual  investors.  The  Class  A-18  Certificates  are  offered  in minimum
denominations of $175,795,000  initial Class A-18  Notional Amount as  described
herein under "Description of the Certificates." Except as set forth below, it is
intended  that the Class A-18 Certificates not be directly or indirectly held or
beneficially  owned  by  any   person  in  amounts   lower  than  such   minimum
denomination.  The  Class A-18  Certificates may  be  transferred to  persons in
amounts lower than the minimum denomination but only if any such person delivers
to the Trustee an affidavit concerning certain matters related to the  financial
sophistication   and  net  worth  of  such   person.  See  "Description  of  the
Certificates" and  "Restrictions on  Transfer of  the Class  A-18  Certificates"
herein.
 
    There  is currently no secondary market  for the Class A-18 Certificates and
there can be no assurance  that a secondary market will  develop or, if it  does
develop, that it will provide Certificateholders with liquidity of investment at
any  particular  time  or for  the  life  of the  Class  A-18  Certificates. The
Underwriter intends to  act as a  market maker in  the Class A-18  Certificates,
subject  to applicable provisions of federal and state securities laws and other
regulatory requirements, but is under no obligation to do so and any such market
making may be  discontinued at  any time.  There can  be no  assurance that  any
investor  will be able to sell  a Class A-18 Certificate at  a price equal to or
greater than the price at which such Certificate was purchased.
 
    Distributions in respect of interest and  of principal are made on the  25th
day  of each month,  or if such day  is not a business  day, the next succeeding
business day to the holders of record of the Class A-18 Certificates on the last
business day of the preceding month, to the extent that their allocable  portion
of  the Pool Distribution Amount (as  defined herein) is sufficient therefor. On
each Distribution Date (as  defined herein), to the  extent funds are  available
therefor,  the  amount of  interest  distributed in  respect  of the  Class A-18
Certificates will  equal  the interest  accrued  during the  applicable  Regular
Interest Accrual Period (as defined in the Prospectus Supplement). Interest will
accrue   during  each  Regular  Interest  Accrual   Period  on  the  Class  A-18
Certificates at  a per  annum rate  equal to  the weighted  average of  the  Net
Mortgage  Interest Rates  (as defined  herein) of the  Mortgage Loans  as of the
first day of  such period minus  7.50%, on  the Class A-18  Notional Amount  (as
defined  herein), less any  Non-Supported Interest Shortfall  (as defined in the
Prospectus Supplement) and other losses allocable to the Class A-18 Certificates
as  described  in   the  Prospectus   Supplement  under   "Description  of   the
Certificates--Interest."  The Class  A Subclass  Principal Balance  of the Class
A-18  Certificates  as  of  the  Determination  Date  in  April  1996  will   be
approximately   $190.  The  Class  A  Subclass   Principal  Balance  as  of  the
Determination Date  in  May  1996 will  be  equal  to such  balance  as  of  the
Determination  Date in April 1996 reduced by  the amount of any distributions or
other  reductions  of  principal  on  the  Distribution  Date  in  April   1996.
Distributions  in reduction of the principal balance of the Class A Certificates
will be made monthly on each Distribution  Date in an aggregate amount equal  to
the  Class  A  Principal  Distribution  Amount  (as  defined  in  the Prospectus
Supplement). Distributions in reduction of the principal balance of the Class  A
Certificates  each  month will  be  allocated among  the  Subclasses of  Class A
Certificates  in  the  manner  described  in  the  Prospectus  Supplement  under
"Description    of   the   Certificates--Principal   (Including   Prepayments)."
Distributions on  the  Class A-18  Certificates  will  be made  pro  rata  among
Certificateholders  of  such Subclass  based on  their Percentage  Interests (as
defined in the Prospectus Supplement).
 
    This Supplement does  not contain complete  information regarding the  Class
A-18  Certificates and  should be read  only in conjunction  with the Prospectus
Supplement and the Prospectus. Sales of  the Class A-18 Certificates may not  be
consummated  unless the purchaser  has received this  Supplement, the Prospectus
Supplement and  the  Prospectus. Capitalized  terms  used herein  that  are  not
otherwise  defined shall  have the meanings  ascribed thereto  in the Prospectus
Supplement or the Prospectus, as applicable.
                              -------------------
 
    UNTIL JULY 22, 1996,  ALL DEALERS EFFECTING TRANSACTIONS  IN THE CLASS  A-18
CERTIFICATES, WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED
TO  DELIVER THIS SUPPLEMENT, THE PROSPECTUS  SUPPLEMENT AND THE PROSPECTUS. THIS
IS IN ADDITION  TO THE  OBLIGATION OF DEALERS  TO DELIVER  THIS SUPPLEMENT,  THE
PROSPECTUS  SUPPLEMENT AND THE  PROSPECTUS WHEN ACTING  AS UNDERWRITERS AND WITH
RESPECT TO THEIR UNSOLD ALLOTMENTS OR SUBSCRIPTIONS.
 
                                      S1-2
<PAGE>
                                    GENERAL
 
    The  following is  qualified in  its entirety  by reference  to the detailed
information appearing in the Prospectus  Supplement and in the Prospectus,  each
of  which should be read in  conjunction with this Supplement. Capitalized terms
used in  this Supplement  and not  otherwise defined  herein have  the  meanings
assigned  in  the Prospectus  Supplement  or in  the  Prospectus. See  "Index of
Significant Prospectus Supplement Definitions" in the Prospectus Supplement  and
"Index of Significant Definitions" in the Prospectus.
 
    The  Series 1992-26 Certificates  were issued on August  28, 1992. The Class
A-18 Certificates were not offered to the public at the time of the issuance  of
the Series 1992-26 Certificates.
 
                    RISK FACTORS AND SPECIAL CONSIDERATIONS
 
YIELD CONSIDERATIONS
 
    The  yield  to maturity  of  the Class  A-18  Certificates will  be directly
related to the rate of payments of principal on the Mortgage Loans in the  Trust
Estate,  particularly with respect to those  Mortgage Loans with higher rates of
interest. The rate of principal payments on  the Mortgage Loans will in turn  be
affected  by  the amortization  schedules  of the  Mortgage  Loans, the  rate of
principal prepayments (including  partial prepayments and  those resulting  from
refinancing)  thereon by  mortgagors, liquidations of  defaulted Mortgage Loans,
repurchases  by  the  Seller  of  Mortgage  Loans  as  a  result  of   defective
documentation or breaches of representations and warranties, optional repurchase
by  the Seller of defaulted Mortgage Loans and optional purchase by the Servicer
of all of the  Mortgage Loans in  connection with the  termination of the  Trust
Estate. See "Description of the Mortgage Loans--Optional Repurchase of Defaulted
Mortgage  Loans" and "Pooling and  Servicing Agreement--Optional Termination" in
the Prospectus Supplement and "The Trust Estates--Mortgage Loans--Assignment  of
Mortgage  Loans to the  Trustee," "--Optional Repurchases"  and "The Pooling and
Servicing Agreement--Termination; Purchase of Mortgage Loans" in the Prospectus.
Mortgagors are permitted to prepay the Mortgage  Loans, in whole or in part,  at
any time without penalty.
 
    The  rate of payments (including prepayments)  on pools of mortgage loans is
influenced by a variety  of economic, geographic, social  and other factors.  If
prevailing  rates for  similar mortgage loans  fall below  the Mortgage Interest
Rates on the Mortgage Loans, the rate of prepayment would generally be  expected
to  increase. Conversely, if interest rates on similar mortgage loans rise above
the Mortgage Interest Rates on the Mortgage Loans, the rate of prepayment  would
generally be expected to decrease.
 
    The  yield to maturity on the Class A-18 Certificates may be affected by the
geographic concentration  of  the  Mortgaged Properties  securing  the  Mortgage
Loans.  As  of March  15, 1996,  Mortgaged Properties  located in  the following
states secured at least 5.00% of  the Aggregate Unpaid Principal Balance of  the
Mortgage  Loans: California (35.28%), New York (16.64%), New Jersey (14.50%) and
Texas (5.16%). In  recent years,  California and  several other  regions in  the
United  States  have  experienced  significant declines  in  housing  prices. In
addition, California, as well as certain other regions, has experienced  natural
disasters,  including earthquakes, hurricanes and  flooding, which may adversely
affect property values. Any direct damage to the Mortgaged Properties caused  by
such  disasters, deterioration in housing prices  in California (and to a lesser
extent the other states  in which the Mortgaged  Properties are located) or  the
deterioration of economic conditions in such regions which adversely affects the
ability  of borrowers to  make payments on  the Mortgage Loans  may increase the
likelihood of losses  on the  Mortgage Loans. Such  losses, if  they occur,  may
increase  the  likelihood  of liquidations  and  prepayments which  may  have an
adverse effect on  the yield  to maturity of  the Class  A-18 Certificates.  See
"Description of the Mortgage Loans" herein.
 
    AN INVESTOR THAT PURCHASES CLASS A-18 CERTIFICATES, WHICH ARE EXPECTED TO BE
OFFERED  AT A SUBSTANTIAL PREMIUM,  SHOULD CONSIDER THE RISK  THAT A FASTER THAN
ANTICIPATED RATE OF PRINCIPAL PAYMENTS ON  THE MORTGAGE LOANS WILL RESULT IN  AN
ACTUAL YIELD THAT IS LOWER THAN SUCH INVESTOR'S EXPECTED YIELD AND MAY RESULT IN
THE  FAILURE  OF SUCH  INVESTOR  TO FULLY  RECOVER  ITS INITIAL  INVESTMENT. See
"Sensitivity of the Pre-Tax  Yield and Weighted Average  Life of the Class  A-18
Certificates" herein and "Prepayment and Yield Considerations" in the Prospectus
Supplement.
 
                                      S1-3
<PAGE>
RECENT DEVELOPMENTS AFFECTING THE SELLER AND SERVICER
 
    The  Seller and the  Servicer are each  either a direct  or indirect, wholly
owned subsidiary  of Residential  Services Corporation  of America,  which is  a
direct,  wholly owned subsidiary of The Prudential Insurance Company of America,
a mutual insurance company organized under the  laws of the State of New  Jersey
("Prudential  Insurance"). On  January 29, 1996,  Prudential Insurance announced
that it had entered into a definitive agreement (the "Sale Agreement") to sell a
substantial portion of its residential mortgage operations to Norwest  Mortgage,
Inc.,  a California corporation ("Norwest Mortgage"), and Norwest Bank Minnesota
National Association,  a  national  banking  association  ("Norwest  Bank"  and,
collectively  with Norwest Mortgage, "Norwest"). In connection therewith, on the
closing date specified pursuant to the  Sale Agreement (the "Sale Date"),  which
is  currently expected to be  on or about April  30, 1996, Norwest Mortgage will
acquire from the Servicer substantially all of its assets and businesses,  other
than  certain mortgage loans and the  Servicer's right to service mortgage loans
underlying series of mortgage  pass-through certificates representing  interests
in trusts formed by the Seller or by Securitized Asset Sales, Inc., an affiliate
of  the Seller and  the Servicer ("SASI"),  including the Mortgage  Loans in the
Trust Estate, and certain  other mortgage servicing  rights (all such  servicing
rights  collectively, the "Retained Servicing"). It  is the present intention of
the Servicer  to  sell the  Retained  Servicing, from  time  to time  as  market
conditions warrant, in one or more transactions to one or more purchasers, which
may  include  Norwest  Mortgage,  and  to  effectively  exit  the  mortgage loan
origination and servicing business as of the Sale Date.
 
    In order to assure the performance of the Servicer's obligations as servicer
under the Pooling  and Servicing Agreement  as well as  under other pooling  and
servicing  agreements pursuant to which various  series of the Seller's mortgage
pass-through certificates were issued and other agreements pursuant to which the
Servicer performs Retained Servicing with  respect to mortgage loans  underlying
series  of mortgage  pass-through certificates representing  interests in trusts
formed by the  Seller or  SASI (each, a  "Servicing Agreement")  and under  each
other  agreement pursuant to which the Servicer performs Retained Servicing with
respect to  mortgage  loans  not  underlying  series  of  mortgage  pass-through
certificates  representing  interests in  trusts formed  by  the Seller  or SASI
(each, an "Other Servicing Agreement"),  the Servicer, Prudential Insurance  and
Norwest intend to enter into the following arrangements:
 
    1.   SUBSERVICING AGREEMENT.  The Servicer, Prudential Insurance and Norwest
Mortgage  will   enter  into   a  subservicing   agreement  (the   "Subservicing
Agreement"),  pursuant to which the Servicer  will delegate to Norwest Mortgage,
and Norwest Mortgage  will agree to  perform, all of  the Servicer's duties  and
obligations  as mortgage loan servicer under the Pooling and Servicing Agreement
and each  Servicing Agreement  and  Other Servicing  Agreement, other  than  the
Servicer's  duties with  respect to the  administration and  disposition of real
estate  acquired  upon  foreclosure,  which   latter  duties  will  remain   the
responsibility  of the Servicer with the particular functions to be delegated by
the Servicer to Prudential Asset Recovery, Inc., an affiliate of the Seller, the
Servicer, SASI and Prudential Insurance, or other third party contractors.  With
respect  to the Series  1992-26 Certificates, such  duties include collection of
mortgage payments,  maintenance  of tax  and  insurance escrows,  advancing  for
borrower  delinquencies and unpaid taxes, to  the extent required by the Pooling
and Servicing  Agreement, and  foreclosure or  other realization  activities  in
connection with defaulted Mortgage Loans.
 
    Under the Subservicing Agreement, Norwest Mortgage will be obligated to make
any principal and interest or other advances required to be made by the Servicer
under  the  Pooling and  Servicing  Agreement as  well  as under  each Servicing
Agreement or Other Servicing Agreement, provided that the aggregate unreimbursed
amount of such advances at any time  does not exceed $100 million. The  Servicer
will  be obligated  to reimburse  Norwest Mortgage  for the  amount of  any such
advances, plus interest, from its own funds. The Servicer will remain  obligated
under the Pooling and Servicing Agreement and each Servicing Agreement and Other
Servicing  Agreement for  all required  advances which  are not  made by Norwest
Mortgage for any reason. In order to provide for its obligation to make advances
after the  Sale  Date,  the Servicer  will  enter  into a  Loan  Agreement  with
Prudential  Funding Corporation, an affiliate of  the Seller, the Servicer, SASI
and Prudential Insurance ("Funding"), pursuant to which Funding will provide the
Servicer with a committed borrowing line (the "Loan Facility") in the amount  of
$40 million for the sole purpose of supporting advances required of the Servicer
under the Pooling and Servicing Agreement and Servicing Agreements. Although the
Servicer   expects   that  the   combination   of  Norwest   Mortgage's  advance
 
                                      S1-4
<PAGE>
obligation under  the  Subservicing Agreement  and  the Loan  Facility  will  be
adequate  to provide for the continuation of  all such advances, there can be no
assurance that such mechanisms will be  sufficient, or that after the Sale  Date
the  Servicer will  have sufficient  other assets,  to ensure  that all required
advances will be made.
 
    The Servicer will pay Norwest Mortgage a portion of the Servicer's servicing
compensation under the  Pooling and  Servicing Agreement for  its activities  as
subservicer.  The Subservicing Agreement will have an initial term of five years
from the Sale Date and may be  extended for consecutive three year terms by  the
Servicer,  at its option, provided that the Servicer and Norwest Mortgage agree,
in the exercise of  good faith, on the  subservicing compensation for each  such
renewal  term. The  Subservicing Agreement will  be terminable  by the Servicer,
from time to time, with respect to  any Mortgage Loans as to which the  Servicer
arranges to sell the Retained Servicing.
 
    2.   CERTIFICATE  ADMINISTRATION AGREEMENT.   The Servicer  and Norwest Bank
will enter  into  an  agreement (the  "Certificate  Administration  Agreement"),
pursuant  to which the Servicer will delegate  to Norwest Bank, and Norwest Bank
will agree  to  perform, all  of  the  Servicer's obligations  with  respect  to
administrative   and  reporting  functions  under   the  Pooling  and  Servicing
Agreement. Such  duties include  calculation of  distributions, preparation  and
filing  of tax returns, preparation of  reports to investors and preparation and
filing of  periodic  reports under  the  Securities  Exchange Act  of  1934,  as
amended.
 
    The Subservicing Agreement and the Certificate Administration Agreement will
collectively  provide for the delegation of  substantially all of the Servicer's
duties and  obligations under  the Pooling  and Servicing  Agreement. While  the
Pooling  and Servicing Agreement  provides that the  Servicer will remain liable
for  its  obligations  thereunder  until  the  related  Retained  Servicing   is
transferred  in the manner permitted  thereby, from and after  the Sale Date the
Servicer is not  expected to  have any  servicing capability  or employees  with
which to perform such obligations.
 
    Under  the Pooling  and Servicing  Agreement, the  Seller is  required, with
respect to any Mortgage Loan found to have defective documentation or in respect
of which  the  Seller has  breached  a  representation or  warranty,  either  to
repurchase  such Mortgage  Loan or to  substitute a new  mortgage loan therefor.
Each such Mortgage Loan was, in turn,  acquired by the Seller from the  Servicer
pursuant  to an agreement under which the  Servicer is required to repurchase or
substitute for any such Mortgage Loan  so repurchased or substituted for by  the
Seller.  Although after  the Sale  Date the  Servicer will  continue to  own the
Retained Servicing,  the Servicer  intends  to sell  the Retained  Servicing  as
expeditiously  as  market  conditions  permit.  Accordingly,  there  can  be  no
assurance that  at any  time after  the Sale  Date the  Servicer will  have  any
material  assets with which to  satisfy such obligations to  the Seller. In such
event, the Seller  would be  unable to  fulfill its  repurchase or  substitution
obligations  under the Pooling and Servicing  Agreement. However with respect to
any Mortgage Loan subserviced pursuant to the Subservicing Agreement, Prudential
Insurance will  agree in  the Subservicing  Agreement to  provide the  funds  to
repurchase such Mortgage Loan.
 
    According to information provided by Norwest Mortgage, at December 31, 1995,
Norwest  Mortgage  was  the  nation's  largest  mortgage  originator  and  had a
servicing portfolio  of  more  than  $107 billion.  In  1995,  Norwest  Mortgage
originated  over $33 billion of residential mortgage loans. Headquartered in Des
Moines, Iowa, Norwest Mortgage has more than 700 loan production offices in  all
50  states.  While derived  from sources  believed to  be reliable,  neither the
Seller, the Servicer nor  the Underwriter makes  any representation or  warranty
regarding  the accuracy  or completeness  of the  information contained  in this
paragraph.
 
                                      S1-5
<PAGE>
                        DESCRIPTION OF THE CERTIFICATES
 
    The  Class  A-18   Certificates  will  be   offered  in  fully   registered,
certificated  form in minimum  denominations of $175,795,000  initial Class A-18
Notional Amount;  provided, however,  that the  Class A-18  Certificates may  be
issued in minimum denominations of $6,278,000 initial Class A-18 Notional Amount
to  persons who deliver  to the Trustee  an affidavit stating  that such person:
(a)(i) is a substantial, sophisticated, institutional investor having  knowledge
and  experience in  financial and  business matters,  and in  particular in such
matters related to securities similar to the Class A-18 Certificates, such  that
such  investor is capable of evaluating the merits and risks of an investment in
the Class A-18 Certificates, and (ii) has  a net worth of at least  $10,000,000;
or  (b) will  hold the Class  A-18 Certificates  solely as nominee  for a person
meeting the criteria set forth in clause (a). The Class A-18 Certificates may be
issued in any amounts in excess of  any such minimum denominations. The Class  A
Subclass   Principal  Balance  of   the  Class  A-18   Certificates  as  of  the
Determination Date  in  April 1996  will  be  approximately $190.  The  Class  A
Subclass   Principal  Balance  of   the  Class  A-18   Certificates  as  of  the
Determination Date  in  May  1996 will  be  equal  to such  balance  as  of  the
Determination Date in April 1996 reduced by the amount of distributions or other
reductions of principal on the Distribution Date in April 1996.
 
    Distributions  of interest and in reduction  of principal balance to holders
of Class A-18 Certificates will be made monthly, to the extent of such Subclass'
entitlement thereto, on  the 25th day  of each month  or, if such  day is not  a
business  day, on  the succeeding  business day  (each, a  "Distribution Date"),
beginning in May 1996.
 
    Distributions (other than the final distribution in retirement of the  Class
A-18  Certificates, as described  in the Prospectus Supplement)  will be made by
check mailed to the address of the person entitled thereto as it appears on  the
Certificate  Register.  However,  with  respect  to  any  holder  of  Class A-18
Certificates evidencing at least a  25% Percentage Interest, distributions  will
be  made  on the  Distribution Date  by wire  transfer in  immediately available
funds, provided that the Servicer, or the  paying agent acting on behalf of  the
Servicer,  shall have  been furnished  with appropriate  wiring instructions not
less than seven business days prior to the related Distribution Date.
 
    The Class A-18 Certificates will be entitled to a distribution in respect of
interest accrued during each Regular Interest Accrual Period in an amount up  to
such  Subclass' Class A  Subclass Interest Accrual Amount.  The Class A Subclass
Interest Accrual Amount for the Class  A-18 Certificates will equal the  product
of  (i) 1/12th  of the difference  between (a)  the weighted average  of the Net
Mortgage Interest Rates of the Mortgage Loans (based on the Scheduled  Principal
Balances  of the Mortgage Loans as of  such Distribution Date) and (b) 7.50% and
(ii) the Class A-18 Notional Amount.
 
    The Class A Subclass Interest Accrual Amount for the Class A-18 Certificates
will be  reduced by  the portion  of (i)  any Non-Supported  Interest  Shortfall
allocable  to  such Subclass  and (ii)  the interest  portion of  Excess Special
Hazard Losses, Excess  Fraud Losses  and Excess Bankruptcy  Losses allocable  to
such  Subclass as described under "Description of the Certificates--Interest" in
the Prospectus Supplement.
 
    The "Net  Mortgage Interest  Rate" on  each Mortgage  Loan is  equal to  the
Mortgage  Interest Rate on such Mortgage Loan  as stated in the related Mortgage
Note minus the Servicing Fee rate of 0.20% per annum. See "Pooling and Servicing
Agreement--Servicing Compensation  and Payment  of Expenses"  in the  Prospectus
Supplement.
 
    The "Class A-18 Notional Amount" with respect to each Distribution Date will
be  equal to the Pool Scheduled Principal Balance, as defined under "Description
of  the  Certificates--Principal  (Including  Prepayments)"  in  the  Prospectus
Supplement,  as of such  Distribution Date. The Class  A-18 Notional Amount with
respect to the Distribution  Date in March  1996 was approximately  $82,168,528.
The Class A-18 Notional Amount with respect to the Distribution Date in May 1996
will be equal to the Class A-18 Notional Amount with respect to the Distribution
Date  in March  1996, less the  difference between the  Pool Scheduled Principal
Balance with  respect  to the  Distribution  Date in  March  1996 and  the  Pool
Scheduled Principal Balance with respect to the Distribution Date in May 1996. A
notional  amount does not entitle a holder to receive distributions of principal
on the basis  of such notional  amount, but is  solely used for  the purpose  of
computing  the amount of interest accrued on  a Subclass. The initial Class A-18
Notional Amount was approximately $351,590,575.
 
    Notwithstanding anything  contained  in  the Prospectus  Supplement  or  the
Prospectus  to the contrary,  the "Pool Distribution  Amount" for a Distribution
Date will be the sum of all previously undistributed payments or other  receipts
on  account  of  principal  (including  principal  prepayments  and  Liquidation
Proceeds in respect of principal,
 
                                      S1-6
<PAGE>
if any) and  interest on or  in respect of  the Mortgage Loans  received by  the
Servicer  after the  Cut-Off Date  (except for  amounts due  on or  prior to the
Cut-Off Date), or received by the Servicer  on or prior to the Cut-Off Date  but
due  after the Cut-Off Date, in either case received on or prior to the business
day preceding the  Determination Date in  the month in  which such  Distribution
Date  occurs, plus  (i) all  Periodic Advances  made by  the Servicer,  (ii) all
withdrawals from  any  reserve  fund  established to  provide  support  for  the
Servicer's  obligation to make advances, as  described under "Description of the
Certificates--Periodic Advances"  in the  Prospectus  Supplement and  (iii)  all
other  amounts required to be placed in  the Certificate Account by the Servicer
pursuant to the Pooling and Servicing Agreement, but excluding the following:
 
        (a)  amounts  received  as  late  payments  of  principal  or   interest
    respecting  which the Servicer previously has  made one or more unreimbursed
    Periodic Advances or an unreimbursed advance has been made from the  Reserve
    Fund, if established;
 
        (b) any unreimbursed Periodic Advances or unreimbursed advances from the
    Reserve Fund, if established, with respect to Liquidated Loans;
 
        (c)  those portions of each payment of interest on a particular Mortgage
    Loan which represent the applicable Servicing Fee, as adjusted in respect of
    Prepayment Interest  Shortfalls  as  described  under  "Description  of  the
    Certificates--Interest" in the Prospectus Supplement;
 
        (d)  all  amounts  representing  scheduled  payments  of  principal  and
    interest due  after  the Due  Date  occurring in  the  month in  which  such
    Distribution Date occurs;
 
        (e)  all principal prepayments in full  and all proceeds of any Mortgage
    Loans, or  property acquired  in  respect thereof,  liquidated,  foreclosed,
    purchased  or repurchased pursuant  to the Pooling  and Servicing Agreement,
    received on or  after the  Due Date  occurring in  the month  in which  such
    Distribution  Date occurs, and all partial principal prepayments received by
    the Servicer on or  after the Determination Date  occurring in the month  in
    which such Distribution Date occurs, and all related payments of interest on
    such amounts;
 
         (f)  to the  extent permitted by  the Pooling  and Servicing Agreement,
    that portion of Liquidation Proceeds or insurance proceeds with respect to a
    Mortgage Loan  which  represents  any  unpaid Servicing  Fee  to  which  the
    Servicer is entitled;
 
        (g)  all  amounts  representing  certain  expenses  reimbursable  to the
    Servicer and  other amounts  permitted to  be retained  by the  Servicer  or
    withdrawn  by  the Servicer  from the  Certificate  Account pursuant  to the
    Pooling and Servicing Agreement;
 
        (h) all amounts in the nature of late fees, assumption fees,  prepayment
    fees and similar fees which the Servicer is entitled to retain as additional
    servicing compensation;
 
         (i)  reinvestment  earnings  on  payments received  in  respect  of the
    Mortgage Loans; and
 
         (j) Net Foreclosure Profits.
 
    Notwithstanding anything  contained  in  the Prospectus  Supplement  or  the
Prospectus to the contrary, if, on any Determination Date, payments of principal
and  interest due on  any Mortgage Loan in  the Trust Estate  on the related Due
Date have not  been received as  of the close  of business on  the business  day
preceding  such  Determination  Date, the  Servicer  will be  obligated  to make
Periodic Advances on or before the related Distribution Date for the benefit  of
holders of the Series 1992-26 Certificates.
 
    As  described under "Pooling  and Servicing Agreement--Optional Termination"
in the Prospectus Supplement, the Servicer  has the right, but is not  required,
to  purchase from  the Trust  Estate all  remaining Mortgage  Loans, and thereby
effect early retirement of the Series 1992-26 Certificates, on any  Distribution
Date  when the Pool Scheduled Principal Balance  is less than 10% of the Cut-Off
Date Aggregate  Principal Balance  (as defined  in the  Prospectus  Supplement).
However, the Servicer will agree that for so long as the Class A-18 Certificates
are  outstanding, without the consent of  holders of 66 2/3% Percentage Interest
of the Class A-18 Certificates, the Servicer will not exercise such right unless
the Pool Scheduled Principal Balance of the  Mortgage Loans is equal to or  less
than 1% of the Cut-Off Date Aggregate Principal Balance.
 
    The  Prospectus Supplement and the Prospectus contain significant additional
information concerning  the  characteristics  of the  Class  A-18  Certificates.
Investors  are urged to read "Description of the Certificates" in the Prospectus
Supplement and in the Prospectus.
 
                                      S1-7
<PAGE>
                       DESCRIPTION OF THE MORTGAGE LOANS
 
    As  of March 15, 1996,  the Mortgage Loans in  the Trust Estate consisted of
fixed interest  rate,  conventional,  monthly pay,  fully  amortizing,  one-  to
four-family, residential first mortgage loans originated or acquired by PHMC for
its  own account  or for the  account of  an affiliate having  original terms to
stated maturity of approximately 15 years.  The "Unpaid Principal Balance" of  a
Mortgage  Loan as of March  15, 1996 is its unpaid  principal balance as of such
date assuming no delinquencies and no prepayments in full. As of March 15, 1996,
the Mortgage Loans  included 443  promissory notes, having  an aggregate  Unpaid
Principal  Balance (the  "Aggregate Unpaid Principal  Balance") of approximately
$79,849,972, secured by  first liens  (the "Mortgages") on  one- to  four-family
residential  properties (the "Mortgaged Properties"). As  of March 15, 1996, six
such  Mortgage  Loans   having  an   aggregate  Unpaid   Principal  Balance   of
approximately  $1,317,146 have prepaid in full. Prepayments in full occurring in
March 1996  will reduce  the Class  A-18  Notional Amount  with respect  to  the
Distribution   Date  in  May  1996.  The  Mortgage  Loans  have  the  additional
characteristics described below and in the Prospectus.
 
    No Mortgage Loan is a Buy-Down Loan. See "The Trust Estates--Mortgage Loans"
in the  Prospectus. As  of  March 15,  1996,  ten Mortgage  Loans,  representing
approximately  2.22% of the Aggregate  Unpaid Principal Balance, were Relocation
Mortgage Loans. See "PHMC--Mortgage Loan Production Sources" in the Prospectus.
 
    Each of the Mortgage Loans is subject to a due-on-sale clause. See  "Certain
Legal Aspects of the Mortgage Loans--'Due-on-Sale' Clause" and "Servicing of the
Mortgage  Loans--Enforcement of Due-on-Sale  Clauses; Realization Upon Defaulted
Mortgage Loans" in the Prospectus.
 
    As of March 15, 1996, each Mortgage Loan had an Unpaid Principal Balance  of
not  less than $12,188 or  more than $777,198, and  the average Unpaid Principal
Balance of  the Mortgage  Loans was  approximately $180,248.  The latest  stated
maturity date of any of the Mortgage Loans was July 1, 2008; however, the actual
date  on which any Mortgage Loan is paid  in full may be earlier than the stated
maturity date due  to unscheduled  payments of principal.  Based on  information
supplied  by  the  mortgagors  in connection  with  their  loan  applications at
origination, 407 of the Mortgaged Properties, which secure approximately  93.91%
of  the Aggregate  Unpaid Principal  Balance of  the Mortgage  Loans, were owner
occupied primary residences  and 36  of the Mortgaged  Properties, which  secure
approximately  6.09% of the  Aggregate Unpaid Principal  Balance of the Mortgage
Loans, were  non-owner  occupied  or  second  homes.  See  "PHMC--Mortgage  Loan
Underwriting" in the Prospectus.
 
    As of March 15, 1996, four of the Mortgage Loans, representing approximately
1.03%  of the  Aggregate Unpaid  Principal Balance  of the  Mortgage Loans, were
Subsidy Loans. See "The Trust Estates--Mortgage Loans" and "PHMC--Mortgage  Loan
Underwriting" in the Prospectus.
 
                                      S1-8
<PAGE>
    Set  forth below is  a description of  certain additional characteristics of
the Mortgage Loans as of March 15, 1996 (except as otherwise indicated).
 
                            MORTGAGE INTEREST RATES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
MORTGAGE INTEREST RATE                      LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
7.750%..................................        3     $    919,035.04        1.15   %
7.875%..................................       21        3,443,479.11        4.31
8.000%..................................       28        4,121,340.96        5.16
8.125%..................................       33        6,458,543.23        8.09
8.250%..................................       34        7,352,691.09        9.21
8.375%..................................       57        9,736,757.77       12.19
8.500%..................................       63       11,209,188.14       14.04
8.625%..................................       55       11,791,535.87       14.76
8.750%..................................       59       10,021,117.06       12.55
8.875%..................................       51        8,643,463.04       10.82
9.000%..................................       23        3,351,408.00        4.20
9.125%..................................        9        2,343,724.89        2.94
9.250%..................................        4          268,045.61        0.34
9.375%..................................        3          189,642.65        0.24
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
As of  March  15, 1996,  the  weighted average  Mortgage  Interest Rate  of  the
Mortgage  Loans was  approximately 8.504% per  annum. The  Net Mortgage Interest
Rate of  each Mortgage  Loan is  equal to  the Mortgage  Interest Rate  of  such
Mortgage  Loan minus the Servicing Fee rate of  0.20% per annum. As of March 15,
1996, the weighted average Net Mortgage Interest Rate of the Mortgage Loans  was
approximately 8.304% per annum.
 
                      REMAINING MONTHS TO STATED MATURITY
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
REMAINING STATED TERM (MONTHS)              LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
128.....................................        2     $    228,100.92     0.29   %
131.....................................        5          508,866.76     0.64
132.....................................        7        1,023,908.61     1.28
133.....................................       21        4,105,045.03     5.14
134.....................................       26        4,431,535.55     5.55
135.....................................      103       21,017,250.42    26.32
136.....................................      215       38,414,061.97    48.11
137.....................................       60        9,153,113.60    11.46
141.....................................        1          322,783.41     0.40
142.....................................        1          277,875.18     0.35
145.....................................        1          204,894.25     0.26
148.....................................        1          162,536.76     0.20
                                              ---     ---------------  -------
        Total...........................      443     $ 79,849,972.46   100.00   %
                                              ---     ---------------  -------
                                              ---     ---------------  -------
</TABLE>
 
As  of March 15, 1996, the weighted average remaining term to stated maturity of
the Mortgage Loans was approximately 136 months.
 
                                      S1-9
<PAGE>
                              YEAR OF ORIGINATION
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
YEAR OF ORIGINATION                         LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
1991....................................        2     $    228,100.92     0.29   %
1992....................................      441       79,621,871.54    99.71
                                              ---     ---------------  -------
        Total...........................      443     $ 79,849,972.46   100.00   %
                                              ---     ---------------  -------
                                              ---     ---------------  -------
</TABLE>
 
As of March 15, 1996 the earliest month and year of origination of any  Mortgage
Loan  was  October 1991  and the  latest month  and year  of origination  of any
Mortgage Loan was July 1992.
 
                         ORIGINAL LOAN-TO-VALUE RATIOS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
ORIGINAL LOAN-TO-VALUE RATIO                LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
50.0% or less...........................       80     $ 10,688,139.76       13.39   %
50.1-55.0%..............................       20        3,358,872.45        4.21
55.1-60.0%..............................       24        4,195,655.81        5.25
60.1-65.0%..............................       35        7,384,726.49        9.25
65.1-70.0%..............................       58       11,469,489.91       14.36
70.1-75.0%..............................      107       17,859,062.99       22.37
75.1-80.0%..............................      105       21,643,333.00       27.10
80.1-85.0%..............................        4          796,499.68        1.00
85.1-90.0%..............................       10        2,454,192.37        3.07
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
As of March 15, 1996 the minimum and maximum Loan-to-Value Ratios at origination
of the  Mortgage Loans  were 18.8%  and 90.0%,  respectively, and  the  weighted
average   Loan-to-Value  Ratio  at   origination  of  the   Mortgage  Loans  was
approximately 67.6%. The Loan-to-Value  Ratio of a  Mortgage Loan is  calculated
using  the lesser of (i) the appraised  value of the related Mortgaged Property,
as established by an appraisal obtained  by the originator from an appraiser  at
the  time of  origination and  (ii) the  sale price  for such  property. In some
instances, the  Loan-to-Value  Ratio may  be  based  on an  appraisal  that  was
obtained  by the originator more than four months prior to origination, provided
that (i) a recertification  of the original appraisal  is obtained and (ii)  the
original appraisal was obtained no more than twelve months prior to origination.
For the purpose of calculating the Loan-to-Value Ratio of any Mortgage Loan that
is  the result of the refinancing (including a refinancing for "equity take-out"
purposes) of  an existing  mortgage loan,  the appraised  value of  the  related
Mortgaged Property is generally determined by reference to an appraisal obtained
in  connection  with the  origination of  the replacement  loan. See  "The Trust
Estates--Mortgage Loans" in the  Prospectus. As of March  15, 1996, five of  the
Mortgage  Loans having  Loan-to-Value Ratios  at origination  in excess  of 80%,
representing approximately 1.24%  of the Aggregate  Unpaid Principal Balance  of
the  Mortgage  Loans, were  originated without  primary mortgage  insurance. See
"PHMC--Mortgage Loan Underwriting" in the Prospectus.
 
                                     S1-10
<PAGE>
                       MORTGAGE LOAN DOCUMENTATION LEVELS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
DOCUMENTATION LEVEL                         LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Full Documentation......................      167     $ 40,774,261.55       51.06   %
Asset & Income Verification.............        5          714,667.17        0.90
Asset & Mortgage Verification...........      123       18,765,007.97       23.50
Income & Mortgage Verification..........        0                0.00        0.00
Asset Verification......................       49        5,996,493.70        7.51
Income Verification.....................        0                0.00        0.00
Mortgage Verification...................       50        7,836,214.82        9.81
Preferred Processing....................       49        5,763,327.25        7.22
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
Documentation levels vary depending upon several factors, including loan amount,
Loan-to-Value Ratio and the type and purpose of the Mortgage Loan. Asset, income
and mortgage verifications were obtained for Mortgage Loans processed with "full
documentation." In the case of "preferred processing," neither asset, income nor
mortgage verifications were obtained.  However, for all  of the Mortgage  Loans,
verification of the borrower's employment, a credit report on the borrower and a
property  appraisal were obtained. See "PHMC--Mortgage Loan Underwriting" in the
Prospectus.
 
                   ORIGINAL MORTGAGE LOAN PRINCIPAL BALANCES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                ORIGINAL                  NUMBER OF       UNPAID           UNPAID
             MORTGAGE LOAN                MORTGAGE       PRINCIPAL       PRINCIPAL
           PRINCIPAL BALANCE                LOANS         BALANCE         BALANCE
          --------------------            ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Less than or equal to $200,000..........      208     $ 19,220,571.06       24.07   %
$200,001-$250,000.......................       76       14,669,640.34       18.37
$250,001-$300,000.......................       71       15,731,354.66       19.70
$300,001-$350,000.......................       32        8,688,545.08       10.88
$350,001-$400,000.......................       26        8,373,010.48       10.49
$400,001-$450,000.......................       10        3,656,498.51        4.58
$450,001-$500,000.......................       12        4,887,515.93        6.12
$500,001-$550,000.......................        1          452,992.77        0.57
$550,001-$600,000.......................        4        1,969,437.16        2.47
$750,001-$800,000.......................        1          670,866.17        0.84
$850,001-$900,000.......................        1          752,343.24        0.94
$900,001-$950,000.......................        1          777,197.06        0.97
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
As of March 15, 1996, the average Unpaid Principal Balance of the Mortgage Loans
was  approximately  $180,248.  As  of  March  15,  1996,  the  weighted  average
Loan-to-Value  Ratio  at  origination  and the  maximum  Loan-to-Value  Ratio at
origination of  the Mortgage  Loans  which had  original principal  balances  in
excess  of $600,000 were  approximately 67.2% and  70.0%, respectively. See "The
Trust Estates--Mortgage  Loans" and  "PHMC--Mortgage Loan  Underwriting" in  the
Prospectus.
 
                                     S1-11
<PAGE>
                              MORTGAGED PROPERTIES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
PROPERTY                                    LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Single-family detached..................      414     $ 76,135,004.34       95.34   %
Two- to four-family units...............        1          507,772.60        0.64
Condominiums............................       26        2,923,099.56        3.66
Townhouses..............................        1           69,616.87        0.09
Cooperative units.......................        1          214,479.09        0.27
Planned unit developments...............        0                0.00        0.00
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
                                     S1-12
<PAGE>
                GEOGRAPHIC DISTRIBUTION OF MORTGAGED PROPERTIES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
GEOGRAPHIC AREA                             LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Alaska..................................        1     $    168,047.97        0.21   %
Arizona.................................        2          149,412.86        0.19
Arkansas................................        1           62,550.45        0.08
California..............................      120       28,181,677.04       35.28
Colorado................................        2          238,688.75        0.30
Connecticut.............................       10        2,155,403.14        2.70
Delaware................................        2          337,031.45        0.42
District of Columbia....................        1          256,223.84        0.32
Florida.................................       29        3,826,121.42        4.79
Georgia.................................        7          588,351.95        0.74
Illinois................................        5          765,586.04        0.96
Iowa....................................        1           76,471.03        0.10
Louisiana...............................        3          109,227.73        0.14
Maryland................................        8        1,596,535.69        2.00
Massachusetts...........................        7          932,693.21        1.17
Michigan................................        2          150,062.62        0.19
Nevada..................................        4        1,371,361.90        1.72
New Hampshire...........................        5          991,899.69        1.24
New Jersey..............................       68       11,577,397.75       14.50
New Mexico..............................        1           50,660.10        0.06
New York................................       90       13,284,256.34       16.64
North Carolina..........................        3          496,233.34        0.62
Ohio....................................        6        1,471,717.40        1.84
Oklahoma................................        2          433,113.99        0.54
Oregon..................................        3          424,824.11        0.53
Pennsylvania............................       19        3,352,022.17        4.20
Rhode Island............................        1           46,493.05        0.06
Tennessee...............................        3          119,263.02        0.15
Texas...................................       25        4,124,247.83        5.16
Vermont.................................        1          129,426.47        0.16
Virginia................................        5        1,075,661.71        1.35
Washington..............................        4        1,204,201.98        1.51
West Virginia...........................        1           60,396.10        0.08
Wisconsin...............................        1           42,710.32        0.05
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
As  of March 15, 1996, no more  than approximately 1.26% of the Aggregate Unpaid
Principal Balance  of the  Mortgage Loans  was secured  by Mortgaged  Properties
located in any one zip code.
 
                                     S1-13
<PAGE>
                         ORIGINATORS OF MORTGAGE LOANS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
ORIGINATOR                                  LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
PHMC or Affiliate.......................      175     $ 28,317,210.84       35.46   %
Other Originators.......................      268       51,532,761.62       64.54
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
                           PURPOSES OF MORTGAGE LOANS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE       AGGREGATE
                                          NUMBER OF       UNPAID           UNPAID
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
LOAN PURPOSE                                LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Purchase................................      116     $ 16,531,169.19       20.70   %
Rate/term refinance.....................      244       49,903,353.14       62.50
Equity take out.........................       83       13,415,450.13       16.80
                                              ---     ---------------     -------
        Total...........................      443     $ 79,849,972.46      100.00   %
                                              ---     ---------------     -------
                                              ---     ---------------     -------
</TABLE>
 
In  general,  in the  case of  a  Mortgage Loan  made for  "rate/term" refinance
purposes, substantially  all  of  the proceeds  are  used  to pay  in  full  the
principal balance of a previous mortgage loan of the mortgagor with respect to a
Mortgaged Property and to pay origination and closing costs associated with such
refinancing.  However, in the case of a Mortgage Loan made for "equity take out"
refinance purposes, all or a portion  of the proceeds are generally retained  by
the  mortgagor for uses unrelated to the  Mortgaged Property. The amount of such
proceeds  retained  by  the  mortgagor  may  be  substantial.  See  "The   Trust
Estates--Mortgage   Loans"  and   "PHMC--Mortgage  Loan   Underwriting"  in  the
Prospectus.
 
                               DELINQUENCY STATUS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                                         AGGREGATE
                                                       ACTUAL             UNPAID
                                      NUMBER OF        UNPAID            PRINCIPAL
                                      MORTGAGE        PRINCIPAL       BALANCE OF THE
STATUS                                LOANS(1)       BALANCE(1)      MORTGAGE LOANS(2)
- ------------------------------------  ---------   -----------------  -----------------
<S>                                   <C>         <C>                <C>
30 to 59 days.......................         1    $      102,965.61         0.13      %
60 to 89 days.......................         1           344,603.63         0.43
90 days or more.....................         2           452,629.95         0.57
Loans in Foreclosure................         4           934,391.80         1.17
REO Mortgage Loans..................         0                 0.00         0.00
                                             -
                                                  -----------------          ---
        Total.......................         8    $    1,834,590.99         2.30      %
                                             -
                                             -
                                                  -----------------          ---
                                                  -----------------          ---
</TABLE>
 
- ------------
(1) Reflects the  number of  delinquent  Mortgage Loans  and the  actual  unpaid
    principal  balances of such Mortgage Loans based on information available to
    the Servicer as of March 15, 1996.
 
(2) As of March 15, 1996.
 
The indicated periods of delinquency are based  on the number of days past  due,
based  on a 30-day  month. No Mortgage  Loan is considered  delinquent for these
purposes until one month has passed since its contractual due date.
 
    On January  17, 1994,  southern California  experienced an  earthquake  (the
"Earthquake")  and  thereafter  a number  of  aftershocks.  As a  result  of the
Earthquake, Los Angeles  and Ventura Counties  (the "Earthquake Counties")  were
declared  federal disaster  areas eligible  for federal  disaster assistance. In
addition to the Earthquake  Counties, other counties may  have been affected  by
the  Earthquake. As  of March  15, 1996,  approximately 16.13%  of the Aggregate
Unpaid Principal  Balance  of  the  Mortgage  Loans  was  secured  by  Mortgaged
Properties  that  are located  in the  Earthquake Counties.  The Seller  has not
undertaken the physical  inspection of  any Mortgaged Properties.  As a  result,
there  can be no assurance that material damage to any Mortgaged Property in the
affected region has not occurred.
 
                                     S1-14
<PAGE>
    As of January 16, 1995 and March 16,  1995, as a result of flooding, 38  and
49  counties in California, respectively, (the "January 1995 Flood Counties" and
"March 1995  Flood  Counties,"  respectively,  and  together,  the  "1995  Flood
Counties")  were declared federal  disaster areas eligible  for federal disaster
assistance. As of March 15, 1996,  approximately 32.23% of the Aggregate  Unpaid
Principal Balance of the Mortgage Loans was secured by Mortgaged Properties that
are  located in the January 1995 Flood  Counties and approximately 31.38% of the
Aggregate Unpaid  Principal  Balance  of  the  Mortgage  Loans  was  secured  by
Mortgaged  Properties that  are located  in the  March 1995  Flood Counties. The
Seller has not undertaken the  physical inspection of any Mortgaged  Properties.
As  a result, there  can be no  assurance that material  damage to any Mortgaged
Property in the affected region has not occurred.
 
    As of  October 12,  1995, as  a  result of  a hurricane  affecting  Georgia,
Alabama  and  Florida (the  "Hurricane"), 28,  20 and  11 counties,  in Georgia,
Alabama and  Florida, respectively  (the  "Hurricane Counties"),  were  declared
federal disaster areas eligible for federal disaster assistance. As of March 15,
1996,  0.50% of the Aggregate Unpaid Principal Balance of the Mortgage Loans was
secured by Mortgage Properties that are  located in the Hurricane Counties.  The
Seller  has not undertaken the physical  inspection of any Mortgaged Properties.
As a result, there  can be no  assurance that material  damage to any  Mortgaged
Property in the affected region has not occurred.
 
    As  of  March  8, 1996,  as  a  result of  recent  flooding  (the "Northeast
Floods"), all counties in the Commonwealth of Pennsylvania, all counties in  the
State of Maryland, 28 counties in the State of West Virginia, 28 counties in the
State  of New York, 13 counties in  the Commonwealth of Virginia and 12 counties
in the State  of Ohio  (the "Northeast  Flood Counties")  were declared  federal
disaster  areas eligible for federal disaster  assistance. As of March 15, 1996,
approximately 7.52% of the  Aggregate Unpaid Principal  Balance of the  Mortgage
Loans  was secured  by Mortgaged  Properties that  are located  in the Northeast
Flood Counties.  In  addition, other  counties  may  have been  and  may  become
affected  by the  Northeast Floods. The  Seller has not  undertaken the physical
inspection of any Mortgaged Properties. As  a result, there can be no  assurance
that  material damage to any  Mortgaged Property in the  affected region has not
occurred.
 
    As of February  28, 1996,  as a result  of recent  flooding (the  "Northwest
Floods"),  26  counties in  the State  of Oregon,  21 counties  in the  State of
Washington and  10  counties  in  the  State  of  Idaho  (the  "Northwest  Flood
Counties")  were declared federal  disaster areas eligible  for federal disaster
assistance. As of March  15, 1996, approximately 2.04%  of the Aggregate  Unpaid
Principal  Balance of the Mortgage Loans was secured by Mortgage Properties that
are located in  the Northwest Flood  Counties. In addition,  other counties  may
have  been and may become  affected by the Northwest  Floods. The Seller has not
undertaken the physical  inspection of  any Mortgaged Properties.  As a  result,
there  can be no assurance that material damage to any Mortgaged Property in the
affected region has not occurred.
 
    Based on information available to the Servicer as of March 15, 1996, four of
the delinquent  Mortgage  Loans  shown  in  the  preceding  table,  representing
approximately  1.20% of the  Aggregate Unpaid Principal  Balance of the Mortgage
Loans or approximately $960,395, were secured by Mortgaged Properties located in
the Earthquake Counties, the  Hurricane Counties, the  1995 Flood Counties,  the
Northeast Flood Counties or the Northwest Flood Counties.
 
              ORIGINATION, DELINQUENCY AND FORECLOSURE EXPERIENCE
 
    During the years ended December 31, 1993, December 31, 1994 and December 31,
1995, PHMC originated or purchased, for its own account or for the account of an
affiliate,  conventional mortgage loans having an aggregate principal balance of
approximately $35,805,498,813, $16,201,648,701 and $11,488,362,184,
respectively.
 
    The  following  tables  reflect  delinquency,  foreclosure  and  loan   loss
experience  of mortgage loans serviced by PHMC. As described under "Risk Factors
and Special Considerations--Recent Developments," PHMC  intends, as of the  Sale
Date,  to cease  its mortgage loan  origination and  servicing business. Norwest
Mortgage,  as  subservicer  for  PHMC,   will  perform  foreclosure  and   other
realization   activities  in  connection  with   defaulted  Mortgage  Loans  and
Prudential  Asset  Recovery,  Inc.  or  another  third  party  contractor   will
administer and dispose of real estate acquired upon foreclosure.
 
    Certain information concerning PHMC's delinquency, foreclosure and loan loss
experience  on  certain  categories of  the  mortgage loans  included  in PHMC's
mortgage loan  servicing  portfolio  for  the years  ended  December  31,  1990,
December  31,  1991 and  the six  months ended  June  30, 1992  is set  forth in
"Origination,   Delinquency   and   Foreclosure   Experience--Delinquency    and
Foreclosure  Experience" in the Prospectus  Supplement. The following tables set
forth such information as of December  31, 1993, December 31, 1994 and  December
31, 1995.
 
                                     S1-15
<PAGE>
                              TOTAL PROGRAM LOANS
 
<TABLE>
<CAPTION>
                             AS OF                   AS OF                   AS OF
                       DECEMBER 31, 1993       DECEMBER 31, 1994       DECEMBER 31, 1995
                     ----------------------  ----------------------  ----------------------
                                 BY DOLLAR               BY DOLLAR               BY DOLLAR
                      BY NO.      AMOUNT      BY NO.      AMOUNT      BY NO.      AMOUNT
                     OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS
                     --------   -----------  --------   -----------  --------   -----------
<S>                  <C>        <C>          <C>        <C>          <C>        <C>
                                         (DOLLAR AMOUNTS IN THOUSANDS)
 
Total Portfolio of
 Program Loans.....   337,156   $57,687,887   379,075   $62,175,544   423,895   $65,496,977
                     --------   -----------  --------   -----------  --------   -----------
                     --------   -----------  --------   -----------  --------   -----------
Period of
 Delinquency(1)
  30 to 59 days....     3,190   $   489,235     3,548   $   548,524     5,103   $   710,246
  60 to 89 days....       703       109,529       797       128,053       959       141,847
  90 days or
  more.............     1,398       271,637     1,418       308,124       729       122,554
                     --------   -----------  --------   -----------  --------   -----------
Total Delinquent
 Loans.............     5,291   $   870,401     5,763   $   984,701     6,791   $   974,647
                     --------   -----------  --------   -----------  --------   -----------
                     --------   -----------  --------   -----------  --------   -----------
Percent of
 Portfolio.........      1.57%         1.51%     1.52%         1.58%     1.60%         1.49%
</TABLE>
<TABLE>
<CAPTION>
                                         AS OF                AS OF                AS OF
                                   DECEMBER 31, 1993    DECEMBER 31, 1994    DECEMBER 31, 1995
                                   ------------------   ------------------   ------------------
<S>                                <C>                  <C>                  <C>
                                                  (DOLLAR AMOUNTS IN THOUSANDS)
 
Foreclosures(2)..................  $     277,533        $     354,028        $     360,645
Foreclosure Ratio(3).............           0.48%                0.57%                0.55%
 
<CAPTION>
 
                                       YEAR ENDED           YEAR ENDED           YEAR ENDED
                                   DECEMBER 31, 1993    DECEMBER 31, 1994    DECEMBER 31, 1995
                                   ------------------   ------------------   ------------------
                                                  (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                <C>                  <C>                  <C>
 
Net Gain (Loss)(4)...............  $    (112,507)       $    (194,956)       $    (228,775)
Net Gain (Loss) Ratio(5).........          (0.20)%              (0.31)%              (0.35)%
</TABLE>
 
- ------------
(1) The  indicated periods of delinquency  are based on the  number of days past
    due, based on a 30-day month. No mortgage loan is considered delinquent  for
    these  purposes until one month has passed since its contractual due date. A
    mortgage  loan  is   no  longer  considered   delinquent  once   foreclosure
    proceedings have commenced.
 
(2) Includes loans in the applicable portfolio for which foreclosure proceedings
    had  been instituted or with respect to  which the related property had been
    acquired as of the dates indicated.
 
(3) Foreclosures as a percentage of total  loans in the applicable portfolio  at
    the end of each period.
 
(4) Does  not  include gain  or loss  with  respect to  loans in  the applicable
    portfolio for  which foreclosure  proceedings had  been instituted  but  not
    completed  as of  the dates indicated,  or for which  the related properties
    have been acquired in foreclosure proceedings but not yet sold.
 
(5) Net gain (loss) as a percentage  of total loans in the applicable  portfolio
    at the end of each period.
 
                                     S1-16
<PAGE>
                              FIXED PROGRAM LOANS
 
<TABLE>
<CAPTION>
                                                   AS OF                     AS OF                     AS OF
                                             DECEMBER 31, 1993         DECEMBER 31, 1994         DECEMBER 31, 1995
                                          -----------------------   -----------------------   -----------------------
                                                      BY DOLLAR                 BY DOLLAR                 BY DOLLAR
                                           BY NO.       AMOUNT       BY NO.       AMOUNT       BY NO.       AMOUNT
                                          OF LOANS     OF LOANS     OF LOANS     OF LOANS     OF LOANS     OF LOANS
                                          --------   ------------   --------   ------------   --------   ------------
                                                                 (DOLLAR AMOUNTS IN THOUSANDS)
 
<S>                                       <C>        <C>            <C>        <C>            <C>        <C>
Total Portfolio of Fixed Program
 Loans..................................   288,556   $ 48,156,806    307,975   $ 48,602,956    358,021   $ 53,576,591
                                          --------   ------------   --------   ------------   --------   ------------
                                          --------   ------------   --------   ------------   --------   ------------
Period of Delinquency(1)
  30 to 59 days.........................     2,609   $    380,197      2,708   $    389,236      4,101   $    528,824
  60 to 89 days.........................       571         86,136        591         87,687        743         98,269
  90 days or more.......................     1,117        211,870        965        188,414        545         82,595
                                          --------   ------------   --------   ------------   --------   ------------
Total Delinquent Loans..................     4,297   $    678,203      4,264   $    665,337      5,389   $    709,688
                                          --------   ------------   --------   ------------   --------   ------------
                                          --------   ------------   --------   ------------   --------   ------------
Percent of Fixed Program Loan
 Portfolio..............................      1.49%          1.41%      1.38%          1.37%      1.51%          1.32%
</TABLE>
<TABLE>
<CAPTION>
                                               AS OF             AS OF              AS OF
                                           DECEMBER 31,       DECEMBER 31,      DECEMBER 31,
                                               1993               1994              1995
                                          ---------------   ----------------   ---------------
                                                     (DOLLAR AMOUNTS IN THOUSANDS)
 
<S>                                       <C>               <C>                <C>
Foreclosures(2).........................  $  195,361        $   208,253        $  218,951
Foreclosure Ratio(3)....................        0.41%              0.43%             0.41%
 
<CAPTION>
 
                                            YEAR ENDED         YEAR ENDED        YEAR ENDED
                                           DECEMBER 31,       DECEMBER 31,      DECEMBER 31,
                                               1993               1994              1995
                                          ---------------   ----------------   ---------------
                                                     (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                       <C>               <C>                <C>
 
Net Gain (Loss)(4)......................  $  (63,705)       $  (133,523)       $ (164,734)
Net Gain (Loss) Ratio(5)................       (0.13)%            (0.27)%           (0.31)%
</TABLE>
 
- ------------
(1) The  indicated periods of delinquency  are based on the  number of days past
    due, based on a 30-day month. No mortgage loan is considered delinquent  for
    these  purposes until one month has passed since its contractual due date. A
    mortgage  loan  is   no  longer  considered   delinquent  once   foreclosure
    proceedings have commenced.
 
(2) Includes loans in the applicable portfolio for which foreclosure proceedings
    had  been instituted or with respect to  which the related property had been
    acquired as of the dates indicated.
 
(3) Foreclosures as a percentage of total  loans in the applicable portfolio  at
    the end of each period.
 
(4) Does  not  include gain  or loss  with  respect to  loans in  the applicable
    portfolio for  which foreclosure  proceedings had  been instituted  but  not
    completed  as of  the dates indicated,  or for which  the related properties
    have been acquired in foreclosure proceedings but not yet sold.
 
(5) Net gain (loss) as a percentage  of total loans in the applicable  portfolio
    at the end of each period.
 
                                     S1-17
<PAGE>
                   FIXED 15-YEAR NON-RELOCATION PROGRAM LOANS
 
<TABLE>
<CAPTION>
                                               AS OF                   AS OF                   AS OF
                                         DECEMBER 31, 1993       DECEMBER 31, 1994       DECEMBER 31, 1995
                                       ----------------------  ----------------------  ----------------------
                                                   BY DOLLAR               BY DOLLAR               BY DOLLAR
                                        BY NO.      AMOUNT      BY NO.      AMOUNT      BY NO.      AMOUNT
                                       OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS
                                       --------   -----------  --------   -----------  --------   -----------
                                                           (DOLLAR AMOUNTS IN THOUSANDS)
 
<S>                                    <C>        <C>          <C>        <C>          <C>        <C>
Total Portfolio of Fixed 15-Year Non-
 relocation Program Loans............   90,000    $12,652,480   94,356    $12,484,270   97,803    $12,143,242
                                       --------   -----------  --------   -----------  --------   -----------
                                       --------   -----------  --------   -----------  --------   -----------
Period of Delinquency(1)
  30 to 59 days......................      374    $    43,570      399    $    50,230      664    $    71,238
  60 to 89 days......................       53          5,259       61          7,853       97         11,191
  90 days or more....................       94         14,256      106         19,237       69          9,051
                                       --------   -----------  --------   -----------  --------   -----------
Total Delinquent Loans...............      521    $    63,085      566    $    77,320      830    $    91,480
                                       --------   -----------  --------   -----------  --------   -----------
                                       --------   -----------  --------   -----------  --------   -----------
Percent of Fixed 15-Year
 Non-relocation Program Loan
 Portfolio...........................     0.58%          0.50%    0.60%          0.62%    0.85%          0.75%
</TABLE>
<TABLE>
<CAPTION>
                                                AS OF               AS OF               AS OF
                                          DECEMBER 31, 1993   DECEMBER 31, 1994   DECEMBER 31, 1995
                                          -----------------   -----------------   -----------------
                                                        (DOLLAR AMOUNTS IN THOUSANDS)
 
<S>                                       <C>                 <C>                 <C>
Foreclosures(2).........................  $   16,567          $   17,331          $   18,888
Foreclosure Ratio(3)....................       0.13%               0.14%               0.16%
 
<CAPTION>
 
                                             YEAR ENDED          YEAR ENDED          YEAR ENDED
                                          DECEMBER 31, 1993   DECEMBER 31, 1994   DECEMBER 31, 1995
                                          -----------------   -----------------   -----------------
                                                        (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                       <C>                 <C>                 <C>
 
Net Gain (Loss)(4)......................  $   (3,789)         $   (5,280)         $   (9,497)
Net Gain (Loss) Ratio(5)................       (0.03)%             (0.04)%             (0.08)%
</TABLE>
 
- ------------
(1) The  indicated periods of delinquency  are based on the  number of days past
    due, based on a 30-day month. No mortgage loan is considered delinquent  for
    these  purposes until one month has passed since its contractual due date. A
    mortgage  loan  is   no  longer  considered   delinquent  once   foreclosure
    proceedings have commenced.
 
(2) Includes loans in the applicable portfolio for which foreclosure proceedings
    had  been instituted or with respect to  which the related property had been
    acquired as of the dates indicated.
 
(3) Foreclosures as a percentage of total  loans in the applicable portfolio  at
    the end of each period.
 
(4) Does  not  include gain  or loss  with  respect to  loans in  the applicable
    portfolio for  which foreclosure  proceedings had  been instituted  but  not
    completed  as of  the dates indicated,  or for which  the related properties
    have been acquired in foreclosure proceedings but not yet sold.
 
(5) Net gain (loss) as a percentage  of total loans in the applicable  portfolio
    at the end of each period.
 
                                     S1-18
<PAGE>
            RESTRICTIONS ON TRANSFER OF THE CLASS A-18 CERTIFICATES
 
    Class A-18 Certificates with denominations of less than $175,795,000 initial
Class  A-18  Notional Amount  but not  less than  $6,278,000 initial  Class A-18
Notional Amount may  be transferred  to persons who  deliver to  the Trustee  an
affidavit  stating  that such  person: (a)(i)  is a  substantial, sophisticated,
institutional investor having knowledge and experience in financial and business
matters, and in particular in such matters related to securities similar to  the
Class  A-18 Certificates, such  that such investor is  capable of evaluating the
merits and risks of an investment in the Class A-18 Certificates, and (ii) has a
net worth of at least $10,000,000; or (b) will hold the Class A-18  Certificates
solely as nominee for a person meeting the criteria set forth in clause (a).
 
                             HISTORICAL PREPAYMENTS
 
    The  prepayment  model used  in the  Prospectus  Supplement is  the Standard
Prepayment Assumption ("SPA"). See "Prepayment and Yield Considerations" in  the
Prospectus  Supplement. An alternative  model is a conditional  (also known as a
constant)  prepayment  rate  ("CPR").  CPR  represents  a  rate  of  payment  of
unscheduled  principal on mortgage loans,  expressed as an annualized percentage
of the outstanding principal balance of such mortgage loans at the beginning  of
each  period. CPR DOES NOT PURPORT TO  BE A HISTORICAL DESCRIPTION OF PREPAYMENT
EXPERIENCE OR A PREDICTION OF THE ANTICIPATED RATE OF PREPAYMENT OF ANY POOL  OF
MORTGAGE LOANS, INCLUDING THE MORTGAGE LOANS.
 
    The  Series 1992-26 Certificates  were issued on August  28, 1992. Set forth
below are  the approximate  annualized prepayment  rates of  the Mortgage  Loans
underlying  the Series  1992-26 Certificates  as a percentage  of CPR  as of the
Distribution Dates occurring in the indicated months.
 
                          HISTORICAL PREPAYMENT RATES
<TABLE>
<CAPTION>
MONTH                                                           PERCENTAGE OF CPR
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................       10.28%
October 1992..................................................        7.00%
November 1992.................................................       10.31%
December 1992.................................................        4.58%
January 1993..................................................        2.36%
February 1993.................................................        6.44%
March 1993....................................................        9.31%
April 1993....................................................       13.01%
May 1993......................................................       42.61%
June 1993.....................................................       51.67%
July 1993.....................................................       54.31%
August 1993...................................................       54.12%
September 1993................................................       58.10%
October 1993..................................................       66.78%
November 1993.................................................       78.67%
December 1993.................................................       73.82%
January 1994..................................................       81.86%
February 1994.................................................       65.17%
March 1994....................................................       54.68%
April 1994....................................................       57.95%
May 1994......................................................       27.28%
June 1994.....................................................       11.33%
 
<CAPTION>
MONTH                                                           PERCENTAGE OF CPR
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1994.....................................................       11.91%
August 1994...................................................       18.19%
September 1994................................................        3.46%
October 1994..................................................        5.50%
November 1994.................................................       19.54%
December 1994.................................................       11.18%
January 1995..................................................       10.61%
February 1995.................................................        7.96%
March 1995....................................................        5.39%
April 1995....................................................        6.45%
May 1995......................................................        5.81%
June 1995.....................................................        6.54%
July 1995.....................................................        4.92%
August 1995...................................................       21.49%
September 1995................................................        7.21%
October 1995..................................................       13.16%
November 1995.................................................        9.95%
December 1995.................................................       19.46%
January 1996..................................................       26.02%
February 1996.................................................       11.74%
March 1996....................................................       25.28%
</TABLE>
 
    The prepayment rates described above were calculated based upon the weighted
average Mortgage Interest Rate  of the Mortgage Loans  for the applicable  month
and  an assumed  weighted average  remaining term  to maturity  for the Mortgage
Loans equal to the weighted  average remaining term to  maturity at the date  of
the  initial  issuance  of  the  Series  1992-26  Certificates  with  respect to
September 1992, reduced by one month  for each month thereafter. The  prepayment
history  of the  Mortgage Loans  underlying the  Series 1992-26  Certificates is
relatively short  and cannot  be relied  upon as  an indicator  of the  rate  of
prepayments  on the Mortgage Loans to be  experienced over the life of the Class
A-18 Certificates. Further, the rate of  prepayment of a pool of mortgage  loans
during  any period should be  considered in light of  the amount of time elapsed
since the origination  of such mortgage  loans and the  absolute levels of,  and
changes  in, prevailing market interest rates  during such period. For a further
discussion of the factors affecting the  rate of prepayments on mortgage  loans,
see   "Prepayment  and  Yield  Considerations"  in  the  Prospectus  Supplement.
INVESTORS ARE  URGED TO  MAKE  AN INDEPENDENT  DECISION  AS TO  THE  APPROPRIATE
PREPAYMENT  ASSUMPTIONS TO BE USED IN DECIDING  WHETHER TO PURCHASE A CLASS A-18
CERTIFICATE.
 
                                     S1-19
<PAGE>
                 SENSITIVITY OF THE PRE-TAX YIELD AND WEIGHTED
                  AVERAGE LIFE OF THE CLASS A-18 CERTIFICATES
 
    The  Prospectus Supplement and the  Prospectus contain important information
concerning factors that will affect the  yield and weighted average life of  the
Class  A-18  Certificates. Investors  are urged  to  read "Prepayment  and Yield
Considerations" in the Prospectus Supplement and the Prospectus.
 
    THE YIELD TO INVESTORS IN THE CLASS A-18 CERTIFICATES, WHICH ARE EXPECTED TO
BE OFFERED AT A SUBSTANTIAL PREMIUM, WILL BE HIGHLY SENSITIVE TO BOTH THE TIMING
OF RECEIPT OF PREPAYMENTS  AND THE OVERALL RATE  OF PRINCIPAL PREPAYMENT ON  THE
MORTGAGE  LOANS, PARTICULARLY WITH  RESPECT TO THOSE  MORTGAGE LOANS WITH HIGHER
RATES OF INTEREST, WHICH OVERALL RATE  MAY FLUCTUATE SIGNIFICANTLY FROM TIME  TO
TIME.  AN  INVESTOR IN  THE CLASS  A-18 CERTIFICATES  SHOULD FULLY  CONSIDER THE
ASSOCIATED RISKS, INCLUDING  THE RISK THAT  A RAPID RATE  OF PRINCIPAL  PAYMENTS
(INCLUDING  PREPAYMENTS) COULD RESULT  IN THE FAILURE OF  SUCH INVESTOR TO FULLY
RECOVER ITS INITIAL INVESTMENT.
 
    For purposes of the table  set forth below, the  weighted average life of  a
Class A-18 Certificate is the average amount of time that will elapse from April
26,  1996 until each dollar in reduction  of the principal balance of the Series
1992-26 Certificates is distributed to the holders thereof. The weighted average
life of the Class A-18 Certificates  will be influenced by, among other  things,
the rate and timing of principal payments on the Mortgage Loans, which may be in
the form of scheduled amortization or prepayments.
 
    The following table has been prepared on the basis of the characteristics of
the  Mortgage  Loans included  in  the Trust  Estate as  of  March 15,  1996, as
described above under "Description of  the Mortgage Loans," adjusted to  reflect
calculated payments of principal on April 1, 1996 assuming a constant prepayment
rate equal to 0% CPR for the month of March 1996. This adjustment has the effect
of  reducing the remaining terms to stated maturity of each Mortgage Loan by one
month from  the table  shown on  page S1-9.  The following  table indicates  the
sensitivity  to various rates of prepayment on the Mortgage Loans of the pre-tax
yield to maturity,  on a  corporate bond equivalent  ("CBE") basis,  and of  the
weighted  average life of the Class  A-18 Certificates at various percentages of
CPR. Such  calculations  are based  on  distributions made  in  accordance  with
"Description  of the Certificates"  herein and in  the Prospectus Supplement, on
the assumptions  described in  clauses (i),  (iii) and  (v) of  the second  full
paragraph  on  page  S-71  of  the Prospectus  Supplement,  and  on  the further
assumptions that (i) the Class A-18 Certificates will be purchased on April  26,
1996  for an aggregate  purchase price equal  to approximately $1,483,218, which
includes accrued interest from  April 1, 1996 to  (but not including) April  26,
1996,  (ii) distributions to holders of Class  A-18 Certificates will be made on
the 25th  day of  each month  commencing in  May 1996,  (iii) scheduled  monthly
payments of principal and interest on the Mortgage Loans will be timely received
on  the first day of each month (with  no defaults) commencing in May 1996, (iv)
principal prepayments on the Mortgage Loans will be received on the last day  of
each  month commencing in  April 1996 at  the respective percentages  of CPR set
forth in the  table and  there are no  Prepayment Interest  Shortfalls, (v)  the
Class  A-18 Notional Amount applicable to the Distribution Date occurring in May
1996 will be approximately $79,497,238 and  (vi) the Class A Subclass  Principal
Balance of the Class A-18 Certificates as of the Determination Date occurring in
May 1996 will be approximately $190.
 
           SENSITIVITY OF THE PRE-TAX YIELD AND WEIGHTED AVERAGE LIFE
                 OF THE CLASS A-18 CERTIFICATES TO PREPAYMENTS
 
<TABLE>
<CAPTION>
                                                   PERCENTAGES OF CPR
                                        ----------------------------------------
                                         5%     10%    15%    20%    25%    31%
                                        -----  -----  -----  -----  -----  -----
<S>                                     <C>    <C>    <C>    <C>    <C>    <C>
Pre-Tax Yield to Maturity (CBE).......  31.74% 25.79% 19.66% 13.35%  6.83% (1.31)%
Weighted Average Life (years).........   5.36   4.45   3.73   3.16   2.69   2.25
</TABLE>
 
    The  pre-tax yields set forth in the  preceding table were calculated by (i)
determining the monthly discount rates which, when applied to the assumed stream
of cash  flows to  be  paid on  the Class  A-18  Certificates, would  cause  the
discounted  present  value of  such assumed  stream  of cash  flows to  equal an
assumed  purchase  price  for  the  Class  A-18  Certificates  of  approximately
$1,483,218  which  includes accrued  interest  from April  1,  1996 to  (but not
 
                                     S1-20
<PAGE>
including) April 26, 1996, and (ii)  converting such monthly rates to  corporate
bond  equivalent rates. Such calculation does not take into account the interest
rates at  which an  investor may  be able  to reinvest  funds received  by  such
investor  as distributions on the Class  A-18 Certificates and consequently does
not purport  to  reflect  the  return  on  any  investment  in  the  Class  A-18
Certificates when such reinvestment rates are considered.
 
    The  weighted average lives of the Class  A-18 Certificates set forth in the
preceding  table  were  determined  by  (i)  multiplying  the  amount  of   each
distribution  in  reduction  of  the principal  balance  of  the  Series 1992-26
Certificates by  the  number  of  years  from April  26,  1996  to  the  related
Distribution  Date, (ii) adding  the results and  (iii) dividing the  sum by the
aggregate distributions  in reduction  of the  principal balance  of the  Series
1992-26 Certificates referred to in clause (i).
 
    NOTWITHSTANDING  THE  ASSUMED PREPAYMENT  RATES  REFLECTED IN  THE PRECEDING
TABLE, IT IS HIGHLY UNLIKELY THAT THE MORTGAGE LOANS WILL PREPAY AT ANY CONSTANT
RATE, THAT THE MORTGAGE LOANS WILL PREPAY AT THE SAME RATE OR THAT THE  MORTGAGE
LOANS  WILL NOT EXPERIENCE ANY LOSSES. As a result of these factors, the pre-tax
yield and weighted  average life of  the Class A-18  Certificates are likely  to
differ  from those shown in such table, even if all of the Mortgage Loans prepay
at the indicated percentages of CPR.
 
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    Elections have  been made  to treat  the  Trust Estate  as two  REMICs  (the
"Upper-Tier  REMIC" and the "Lower-Tier REMIC") for federal income tax purposes.
The Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-6, Class A-7,
Class A-8, Class  A-9, Class  A-10, Class A-11,  Class A-12,  Class A-13,  Class
A-14,  Class A-15, Class A-16, Class A-17 and Class A-18 Certificates, the Class
M  Certificates  and  the  Class  B-1,  Class  B-2,  Class  B-3  and  Class  B-4
Certificates are designated as the regular interests in the Upper-Tier REMIC and
the  Class  A-R  and Class  A-LR  Certificates  are designated  as  the residual
interests in  the  Upper-Tier  REMIC and  Lower-Tier  REMIC,  respectively.  The
Proposed  REMIC  Regulations  discussed  in  the  Prospectus  under  the heading
"Certain Federal Income  Tax Consequences--Federal Income  Tax Consequences  for
REMIC  Certificates" were finalized  in substantially the  same form on December
23, 1992.
 
    The Class A-18 Certificates are treated as "qualifying real property  loans"
for  mutual savings banks and domestic  building and loan associations, "regular
interests in a  REMIC" for  domestic building  and loan  associations and  "real
estate assets" for real estate investment trusts, to the extent described in the
Prospectus.
 
    The  Class  A-18  Certificates  generally are  treated  as  debt instruments
originated on the date of original  issuance of the Series 1992-26  Certificates
for  federal income tax purposes. Holders of the Class A-18 Certificates will be
required to  report income  thereon in  accordance with  the accrual  method  of
accounting.  The  Proposed  OID  Regulations discussed  in  the  Prospectus were
withdrawn by subsequently  proposed Treasury regulations  on December 22,  1992.
Final  and temporary Treasury regulations regarding original issue discount (the
"OID Regulations")  were  issued on  February  2,  1994. Although  there  is  no
directly applicable authority with respect to the issuance of the Series 1992-26
Certificates,  the Seller  believes that the  Class A-18  Certificates should be
considered to have been issued with  original issue discount in an amount  equal
to  the excess  of all  distributions of principal  and interest  expected to be
received thereon  over  their issue  price  (including accrued  interest).  This
treatment  is consistent  with the  OID Regulations.  Any "negative"  amounts of
original issue discount  on the  Class A-18 Certificates  attributable to  rapid
prepayments  will not be deductible currently,  but may be offset against future
positive accruals of original issue discount, if any. The holder of a Class A-18
Certificate may be entitled to a loss deduction to the extent it becomes certain
that such holder will not  recover a portion of  its basis in such  Certificate,
assuming  no further prepayments.  The Seller makes no  representation as to the
timing or amount of such losses, if any, or how any such losses will be reported
to the holders. See "Certain Federal Income Tax Consequences--Federal Income Tax
Consequences for REMIC Certificates--Taxation of Regular  Certificates--Original
Issue  Discount" in  the Prospectus.  The adjusted issue  price of  a Class A-18
Certificate as of  the date of  purchase by  an investor is  its original  issue
price,  plus original issue discount accrued since the date of original issuance
of the Series 1992-26 Certificates, less distributions made, and losses, if any,
incurred, on the Class A-18 Certificates since the date of original issuance  of
the  Series 1992-26 Certificates. A purchase  price for a Class A-18 Certificate
that is less than or  greater than the adjusted issue  price of such Class  A-18
Certificate will result in market discount or acquisition
 
                                     S1-21
<PAGE>
premium,  respectively, to  the beneficial  owner thereof,  as discussed  in the
Prospectus under "Certain  Federal Income Tax  Consequences--Federal Income  Tax
Consequences for REMIC Certificates--Taxation of Regular Certificates."
 
    The  Prepayment Assumption  that is  to be used  in determining  the rate of
accrual of original  issue discount is  set forth in  the Prospectus  Supplement
under    "Federal   Income   Tax   Considerations--Regular   Certificates."   No
representation is made as to  the actual rate at  which the Mortgage Loans  will
prepay.
 
    See "Summary Information--Federal Income Tax Status" and "Federal Income Tax
Considerations"  in the  Prospectus Supplement  and "Certain  Federal Income Tax
Consequences--Federal Income  Tax Consequences  for REMIC  Certificates" in  the
Prospectus.
 
                                  UNDERWRITING
 
    Subject to the terms and conditions of an underwriting agreement and a terms
agreement  (together, the "Underwriting  Agreement") among the  Seller, PHMC and
PaineWebber Incorporated,  as underwriter  (the "Underwriter")  and, as  to  the
terms  agreement,  Prudential  Insurance, the  Class  A-18  Certificates offered
hereby are being purchased from the Seller by the Underwriter on or about  April
26,  1996.  The Underwriter  is  committed to  purchase  all of  the  Class A-18
Certificates offered hereby if  any Class A-18  Certificates are purchased.  The
Underwriter  has advised  the Seller  that it proposes  to offer  the Class A-18
Certificates, from  time  to  time,  for  sale  in  negotiated  transactions  or
otherwise  at prices determined at the time of sale. Proceeds to the Seller from
the sale of the Class A-18  Certificates are expected to be approximately  1.77%
of  the Pool Scheduled Principal Balance as of the Distribution Date in May 1996
without  giving  effect  to  partial   principal  prepayments  or  net   partial
liquidation  proceeds received on or after the Determination Date in April 1996,
plus accrued interest from April 1, 1996 to (but not including) April 26,  1996.
The  Underwriter and  any dealers that  participate with the  Underwriter in the
distribution of the Class  A-18 Certificates may be  deemed to be  underwriters,
and  any discounts or commissions received by  them and any profit on the resale
of Class A-18 Certificates by them may be deemed to be underwriting discounts or
commissions under the Securities Act of 1933, as amended (the "Securities Act").
 
    The Underwriting Agreement  provides that  the Seller,  PHMC and  Prudential
Insurance will indemnify the Underwriter against certain civil liabilities under
the  Securities  Act or  contribute  to payments  which  the Underwriter  may be
required to make in respect thereof.
 
                                SECONDARY MARKET
 
    There will  not be  any secondary  market for  the Class  A-18  Certificates
offered  hereby prior to the offering thereof. The Underwriter intends to act as
a market maker in the Class A-18 Certificates, subject to applicable  provisions
of  federal and state securities laws  and other regulatory requirements, but is
under no obligation to do so. There can be no assurance that a secondary  market
in  the Class A-18 Certificates will develop  or, if such a market does develop,
that it  will provide  holders  of Class  A-18  Certificates with  liquidity  of
investment   at  any  particular  time  or  for  the  life  of  the  Class  A-18
Certificates.
 
                              ERISA CONSIDERATIONS
 
    As described in the Prospectus  under "ERISA Considerations," ERISA and  the
Code  impose certain duties and restrictions on  any person which is an employee
benefit plan  within the  meaning of  Section 3(3)  of the  Employee  Retirement
Income  Security Act of 1974, as amended  ("ERISA"), or Code Section 4975 or any
person utilizing the assets of such employee benefit plan (an "ERISA Plan")  and
certain  persons who  perform services  for ERISA  Plans. Comparable  duties and
restrictions may exist under federal, state or local laws ("Similar Law"), which
are, to a material  extent, similar to  the foregoing sections  of ERISA or  the
Code,  on governmental  plans and  on certain  persons who  perform services for
governmental plans. For example, unless exempted, investment by an ERISA Plan in
the Class A-18 Certificates may constitute a prohibited transaction under ERISA,
the Code  or Similar  Law. There  are certain  exemptions issued  by the  United
States  Department of Labor (the "DOL") that  may be applicable to an investment
by an  ERISA Plan  in  the Class  A-18  Certificates, including  the  individual
administrative
 
                                     S1-22
<PAGE>
exemption  described below and Prohibited Transaction Class Exemption 83-1 ("PTE
83-1"). For a further discussion of PTE 83-1, including the necessary conditions
to its applicability, and other important  factors to be considered by an  ERISA
Plan  contemplating  investing  in  the  Class  A-18  Certificates,  see  "ERISA
Considerations" in the Prospectus.
 
    On  June  25,  1990,  the  DOL  issued  to  the  Underwriter  an  individual
administrative  exemption, Prohibited Transaction Exemption  90-36, 55 Fed. Reg.
25903 (the "Exemption"),  from certain  of the prohibited  transaction rules  of
ERISA  with  respect to  the initial  purchase, the  holding and  the subsequent
resale by an  ERISA Plan of  certificates in pass-through  trusts that meet  the
considerations  and requirements of the Exemption.  The Exemption might apply to
the acquisition, holding and resale of  the Class A-18 Certificates by an  ERISA
Plan, provided that specified conditions are met.
 
    Among  the conditions which would have to  be satisfied for the Exemption to
apply to the acquisition by an ERISA Plan of the Class A-18 Certificates, is the
condition that the  ERISA Plan investing  in the Class  A-18 Certificates be  an
"accredited  investor"  as defined  in  Rule 501(a)(1)  of  Regulation D  of the
Securities and Exchange Commission under the Securities Act.
 
    Before purchasing a  Class A-18 Certificate,  a fiduciary of  an ERISA  Plan
should make its own determination as to the availability of the exemptive relief
provided   in  the  Exemption  or  the  availability  of  any  other  prohibited
transaction exemptions (including PTE 83-1),  and whether the conditions of  any
such  exemption will be applicable to the Class A-18 Certificates. Any fiduciary
of an ERISA Plan considering whether to purchase a Class A-18 Certificate should
also carefully  review with  its own  legal advisors  the applicability  of  the
fiduciary  duty and prohibited  transaction provisions of ERISA  and the Code to
such investment. See "ERISA Considerations" in the Prospectus.
 
                                LEGAL INVESTMENT
 
    The Class A-18  Certificates will constitute  "mortgage related  securities"
for  purposes  of the  Secondary Mortgage  Market Enhancement  Act of  1984 (the
"Enhancement Act") so long as  they are rated in one  of the two highest  rating
categories   by   at  least   one   nationally  recognized   statistical  rating
organization. As such,  the Class  A-18 Certificates are  legal investments  for
certain  entities  to  the  extent provided  in  the  Enhancement  Act. However,
institutions subject to the jurisdiction of the Office of the Comptroller of the
Currency, the Board  of Governors  of the  Federal Reserve  System, the  Federal
Deposit  Insurance Corporation, the  Office of Thrift  Supervision, the National
Credit Union Administration  or state  banking or  insurance authorities  should
review  applicable rules, supervisory policies  and guidelines of these agencies
before purchasing a Class A-18 Certificate,  as such Certificates may be  deemed
to  be unsuitable  investments under  one or more  of these  rules, policies and
guidelines and certain restrictions may apply  to investments in the Class  A-18
Certificates. It should also be noted that certain states recently have enacted,
or  have proposed enacting, legislation limiting  to varying extents the ability
of certain entities (in  particular insurance companies)  to invest in  mortgage
related  securities. Investors should  consult with their  own legal advisors in
determining whether and to  what extent the  Class A-18 Certificates  constitute
legal investments for such investors. See "Legal Investment" in the Prospectus.
 
                                 LEGAL MATTERS
 
    The  validity of  the Class A-18  Certificates and certain  tax matters with
respect thereto will be passed upon  for the Seller by Cadwalader, Wickersham  &
Taft,  New York,  New York. Certain  legal matters  will be passed  upon for the
Underwriter by Brown & Wood, New York, New York.
 
                                USE OF PROCEEDS
 
    The net proceeds to be received from the sale of the Class A-18 Certificates
will be applied by  the Seller to  the purchase from an  affiliate of the  Class
A-18 Certificates.
 
                                     S1-23
<PAGE>
                                    RATINGS
 
    The  Class A-18  Certificates have  been rated "AAA"  by Fitch  and "Aaa" by
Moody's. See "Ratings" in the Prospectus Supplement for a further discussion  of
the ratings of the Certificates.
 
    The  ratings of Fitch and Moody's do  not address the possibility that, as a
result of principal  prepayments, Certificateholders  may receive  a lower  than
anticipated yield or the possibility that, as a result of prepayments, investors
in  the  Class  A-18  Certificates  may  fail  to  fully  recoup  their  initial
investment.
 
               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
 
    There are incorporated herein by  reference all documents and reports  filed
or caused to be filed by the Seller with respect to the Trust Estate pursuant to
Section  13(a), 13(c), 14 or 15(d) of the Exchange Act, prior to the termination
of the offering of the Class A-18 Certificates. The Seller will provide or cause
to be  provided  without  charge to  each  person  to whom  this  Supplement  is
delivered  in connection with the offering of the Class A-18 Certificates a list
identifying all  filings with  respect to  a Trust  Estate pursuant  to  Section
13(a),  13(c), 14 or 15(d) of the  Exchange Act since the Seller's latest fiscal
year covered  by its  annual  report on  Form 10-K  and  a copy  of any  or  all
documents  or  reports incorporated  herein by  reference, in  each case  to the
extent such documents or  reports relate to the  Class A-18 Certificates,  other
than  the  exhibits to  such documents  (unless  such exhibits  are specifically
incorporated by reference in such documents).  Requests to the Seller should  be
directed  to:  The  Prudential  Home  Mortgage  Securities  Company,  Inc., 5325
Spectrum Drive, Frederick, Maryland 21701, telephone number (301) 846-8199.
 
                                     S1-24
<PAGE>
PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED MAY 19, 1992)
 
                           $338,514,000 (APPROXIMATE)
 
THE PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY, INC.  [LOGO]
 
                                     SELLER
 
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1992-26
      PRINCIPAL AND INTEREST PAYABLE MONTHLY, COMMENCING IN SEPTEMBER 1992
                              --------------------
 
    The  Series 1992-26 Mortgage Pass-Through  Certificates (the "Series 1992-26
Certificates") will consist of  one class of senior  certificates (the "Class  A
Certificates")  and  two  classes  of subordinated  certificates  (the  "Class M
Certificates" and  "Class  B  Certificates,"  respectively,  and  together,  the
"Subordinated Certificates"). The Class A Certificates are entitled to a certain
priority  relative  to  the  Class  M  and  Class  B  Certificates  in  right of
distributions on the Mortgage Loans. As between the Class M Certificates and the
Class B  Certificates,  the Class  M  Certificates  are entitled  to  a  certain
priority  in  right  of  distributions  on  the  Mortgage  Loans.  The  Class  A
Certificates  will  consist  of  twenty  subclasses  (each,  a  "Subclass")   of
Certificates designated as the Class A-1, Class A-2, Class A-3, Class A-4, Class
A-5,  Class A-6, Class A-7, Class A-8,  Class A-9, Class A-10, Class A-11, Class
A-12, Class A-13, Class  A-14, Class A-15, Class  A-16, Class A-17, Class  A-18,
Class  A-R  and Class  A-LR Certificates.  The Class  A-18 Certificates  are not
offered hereby. The Class  M Certificates will not  be divided into  subclasses.
The  Class  B  Certificates  will consist  of  four  subclasses  of Certificates
designated as the Class  B-1, Class B-2, Class  B-3 and Class B-4  Certificates,
none of which are offered hereby. The Class A Certificates (other than the Class
A-18  Certificates)  and  the  Class  M  Certificates  are  referred  to  herein
collectively as the "Offered Certificates."
 
    The Class A-1, Class A-2, Class A-3, Class A-4, Class A-5, Class A-7,  Class
A-8,  Class A-9, Class A-10, Class A-11, and Class A-12 Certificates are planned
amortization class Certificates and are  referred to herein collectively as  the
"PAC I Certificates." The Class A-13, Class A-14 and Class A-15 Certificates are
also  planned  amortization  class  Certificates  and  are  referred  to  herein
collectively as the "PAC II Certificates."  The Class A-6 Certificates are  also
planned   amortization  class  Certificates.  The  Class  A-16  and  Class  A-17
Certificates will  exhibit principal  payment  characteristics of  both  planned
amortization  class  certificates  and companion  certificates.  Solely  for the
purpose of determining distributions  in reduction of  principal balance of  the
Class  A-16  and Class  A-17  Certificates, such  Subclasses  will be  deemed to
consist of multiple Components. However, the Beneficial Owner of a Class A-16 or
Class A-17 Certificate will not have a severable interest in any one  Component,
but  will have  an undivided  interest in  the entire  Subclass. The  Class A-16
Certificates will consist  of PAC  I, PAC II  and Companion  Components and  the
Class A-17 Certificates will consist of PAC I and Companion Components.
                                                        (CONTINUED ON NEXT PAGE)
                          ----------------------------
 
THESE  SECURITIES DO NOT REPRESENT INTERESTS IN OR OBLIGATIONS OF THE PRUDENTIAL
HOME MORTGAGE SECURITIES  COMPANY, INC. OR  ANY AFFILIATE THEREOF.  NEITHER
     THESE  SECURITIES NOR THE  UNDERLYING MORTGAGE LOANS        WILL BE
        INSURED  OR   GUARANTEED   BY   ANY   GOVERNMENTAL   AGENCY   OR
                                INSTRUMENTALITY.
                          ----------------------------
 
THESE  SECURITIES HAVE  NOT BEEN APPROVED  OR DISAPPROVED BY  THE SECURITIES AND
EXCHANGE  COMMISSION  OR  ANY  STATE  SECURITIES  COMMISSION  NOR  HAS  THE
     SECURITIES   AND  EXCHANGE  COMMISSION   OR  ANY  STATE  SECURITIES
        COMMISSION  PASSED  UPON  THE  ACCURACY  OR  ADEQUACY  OF   THIS
        PROSPECTUS SUPPLEMENT OR THE PROSPECTUS. ANY REPRESENTATION TO
                    THE CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                         INITIAL SUBCLASS                                                   INITIAL SUBCLASS
 SUBCLASS OR CLASS           OR CLASS            PASS-THROUGH       SUBCLASS OR CLASS           OR CLASS            PASS-THROUGH
    DESIGNATION       PRINCIPAL BALANCE (1)          RATE              DESIGNATION       PRINCIPAL BALANCE (1)          RATE
<S>                   <C>                      <C>                 <C>                   <C>                      <C>
Class A-1...........       $35,000,000               7.50%         Class A-11..........       $51,389,000              (3)
Class A-2...........       $27,000,000               6.50%         Class A-12..........       $   258,000              (4)
Class A-3...........       $ 9,306,000               6.00%         Class A-13..........       $30,800,000             7.50%
Class A-4...........       $32,265,000               6.00%         Class A-14..........       $10,500,000             7.50%
Class A-5...........       $10,288,000               6.00%         Class A-15..........       $ 9,061,000             7.50%
Class A-6...........       $32,494,000               6.00%         Class A-16..........       $36,500,000             7.50%
Class A-7...........       $15,000,000               7.15%         Class A-17..........       $15,377,000             7.50%
Class A-8...........       $13,000,000               7.00%         Class A-R...........       $     1,000             7.50%
Class A-9...........       $ 4,100,000               7.50%         Class A-LR..........       $     1,000             7.50%(5)
Class A-10..........       $    20,000                (2)          Class M.............       $ 6,154,000             7.50%
</TABLE>
 
(1) Approximate. The initial Subclass or Class Principal Balances are subject to
    adjustment as described herein.
 
(2) Interest  will accrue on the Class A-10 Certificates each month in an amount
    equal to the  sum of  (i) the product  of 1/12th  of 1.00% and  the Class  A
    Subclass  Principal Balance of the Class  A-2 Certificates, (ii) the product
    of 1/12th of 0.35% and the Class  A Subclass Principal Balance of the  Class
    A-7  Certificates, (iii)  the product  of 1/12th  of 0.50%  and the  Class A
    Subclass Principal  Balance  of the  Class  A-8 Certificates  and  (iv)  the
    product of 1/12th of 7.50% and the Class A Subclass Principal Balance of the
    Class A-10 Certificates.
 
(3) During the initial LIBOR Based Interest Accrual Period, interest will accrue
    on  the Class A-11 Certificates at the rate of 4.025% per annum. During each
    LIBOR Based Interest Accrual Period thereafter, interest will accrue on  the
    Class A-11 Certificates at a per annum rate equal to the lesser of (i) 0.65%
    plus the arithmetic mean of the London interbank offered rate quotations for
    one-month  Eurodollar deposits  ("LIBOR"), determined  monthly as  set forth
    herein  and   (ii)   approximately   10.00%.   See   "Description   of   the
    Certificates--Interest" herein.
 
(4) During the initial LIBOR Based Interest Accrual Period, interest will accrue
    on  the Class A-12 Certificates at the rate of 1190.08246% per annum. During
    each LIBOR Based Interest Accrual Period thereafter, interest will accrue on
    the Class A-12 Certificates at a per  annum rate, subject to a minimum  rate
    of  0%  and a  maximum  rate of  1862.322286%,  equal to  1862.322286% minus
    (199.1821705 X  LIBOR).  See  "Description  of  the  Certificates--Interest"
    herein.
 
(5) On the Class A-LR Notional Amount.
 
    The  Offered  Certificates  are  being  offered  by  Kidder,  Peabody  & Co.
Incorporated (the "Underwriter") from time to  time to the public in  negotiated
transactions  or otherwise  at varying  prices to be  determined at  the time of
sale. Proceeds to the Seller from the  sale of the Offered Certificates will  be
102.6640625%   of  the  aggregate  initial  principal  balance  of  the  Offered
Certificates, plus  accrued interest  thereon  and on  an  amount equal  to  the
aggregate  initial principal balance of the  Class A-18 Certificates at the rate
of 7.50% per annum from August 1,  1992 to (but not including) August 28,  1992,
before  deducting expenses payable  by the Seller estimated  to be $385,000. The
price to  be  paid to  the  Seller has  not  been allocated  among  the  Offered
Certificates. See "Underwriting" herein.
 
    The  Offered Certificates are  offered by the  Underwriter, subject to prior
sale, when, as and if delivered to  and accepted by the Underwriter and  subject
to  certain other  conditions. The Underwriter  reserves the  right to withdraw,
cancel or modify such offer and to reject  any order in whole or in part. It  is
expected  that the Offered Certificates  will be ready for  delivery on or about
August 28, 1992 through  the facilities of The  Depository Trust Company or,  in
the  case of the Class  A-10, Class A-11, Class A-12,  Class A-R, Class A-LR and
Class M Certificates, at  the office of Kidder,  Peabody & Co. Incorporated,  60
Broad  Street, New York, New York 10004, against payment therefor in immediately
available funds.
 
                             KIDDER, PEABODY P CO.
                                  INCORPORATED
                             ----------------------
 
            The date of this Prospectus Supplement is July 29, 1992.
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
 
    The Series 1992-26 Certificates  will evidence in  the aggregate the  entire
beneficial ownership interest in a trust fund (the "Trust Estate") consisting of
a pool of fixed interest rate, conventional, monthly pay, fully amortizing, one-
to four-family, residential first mortgage loans having original terms to stated
maturity  of approximately 15 years, including loans secured by shares issued by
cooperative housing corporations (the  "Mortgage Loans"), together with  certain
related  property, sold by The Prudential Home Mortgage Securities Company, Inc.
(the "Seller") and serviced  by The Prudential Home  Mortgage Company, Inc.  (in
its capacity as servicer, the "Servicer," otherwise "PHMC"). See "Description of
the  Mortgage Loans" herein. The Class A Certificates will initially evidence in
the aggregate an approximate 94.50% undivided interest in the principal  balance
of  the Mortgage Loans. The Class M  Certificates will initially evidence in the
aggregate an approximate 1.75%  undivided interest in  the principal balance  of
the  Mortgage Loans. The  remaining approximate 3.75%  undivided interest in the
principal balance  of  the Mortgage  Loans  will be  evidenced  by the  Class  B
Certificates.
 
    Distributions  in respect of interest  will be made on  the 25th day of each
month or the next succeeding business day, commencing in September 1992, to  the
holders  of Offered Certificates, as described herein. The rights of the holders
of the  Class  M Certificates  to  receive  distributions of  interest  will  be
subordinated to the rights of the holders of the Class A Certificates to receive
distributions  of  interest and  principal as  described  herein. The  amount of
interest accrued  on any  Subclass  or Class  of  Offered Certificates  will  be
reduced by the amount of (i) any Non-Supported Interest Shortfall and (ii) other
losses   allocable  to  such  Subclass  or   Class  as  described  herein  under
"Description of the Certificates--Interest."  Distributions in reduction of  the
principal  balance of  the Class  A Certificates  will be  made monthly  on each
Distribution Date  in  an  aggregate  amount equal  to  the  Class  A  Principal
Distribution  Amount. Distributions in reduction of the principal balance of the
Class M  Certificates will  be made  monthly  on each  Distribution Date  in  an
aggregate  amount equal to  the Class M Principal  Distribution Amount after the
Class A Certificates have received the Class A Distribution Amount and the Class
M Certificates have received their amount  of interest due with respect to  such
Distribution  Date. Distributions in  reduction of the  principal balance of the
Class A  Certificates on  any  Distribution Date  will  be allocated  among  the
Subclasses  of  Class  A  Certificates  in  the  manner  described  herein under
"Description   of   the   Certificates--Principal   (Including    Prepayments)."
Distributions  to each Subclass or undivided  Class of Offered Certificates will
be made pro rata among Certificateholders of such Subclass or Class.
 
    THE YIELD  TO MATURITY  OF THE  OFFERED CERTIFICATES  WILL BE  SENSITIVE  IN
VARYING  DEGREES  TO  THE  RATE  AND  TIMING  OF  PRINCIPAL  PAYMENTS (INCLUDING
PREPAYMENTS) ON THE  MORTGAGE LOANS, WHICH  MAY BE PREPAID  AT ANY TIME  WITHOUT
PENALTY.  INVESTORS IN THE  OFFERED CERTIFICATES SHOULD  CONSIDER THE ASSOCIATED
RISKS, INCLUDING, IN THE CASE OF  OFFERED CERTIFICATES PURCHASED AT A  DISCOUNT,
THE RISK THAT A SLOWER THAN ANTICIPATED RATE OF PAYMENTS IN RESPECT OF PRINCIPAL
(INCLUDING  PREPAYMENTS) ON THE  MORTGAGE LOANS COULD RESULT  IN AN ACTUAL YIELD
THAT IS  LOWER  THAN  ANTICIPATED  AND, IN  THE  CASE  OF  OFFERED  CERTIFICATES
PURCHASED AT A PREMIUM, PARTICULARLY THE CLASS A-10 AND CLASS A-12 CERTIFICATES,
THAT  A  FASTER  THAN  ANTICIPATED  RATE OF  PAYMENTS  IN  RESPECT  OF PRINCIPAL
(INCLUDING PREPAYMENTS) ON THE  MORTGAGE LOANS COULD RESULT  IN AN ACTUAL  YIELD
THAT  IS LOWER  THAN ANTICIPATED.  INVESTORS IN  THE CLASS  A-10 AND  CLASS A-12
CERTIFICATES SHOULD ALSO  CONSIDER THE  RISK THAT A  RAPID RATE  OF PAYMENTS  IN
RESPECT OF PRINCIPAL (INCLUDING PREPAYMENTS) COULD RESULT IN THE FAILURE OF SUCH
INVESTORS  TO FULLY RECOVER THEIR INITIAL INVESTMENTS. THE YIELD TO INVESTORS IN
THE CLASS A-11 CERTIFICATES  WILL BE SENSITIVE AND  THE CLASS A-12  CERTIFICATES
WILL  BE HIGHLY SENSITIVE TO THE LEVEL OF LIBOR. A HIGH LEVEL OF LIBOR WILL HAVE
A MATERIAL  NEGATIVE  EFFECT  ON  THE  YIELD TO  INVESTORS  IN  THE  CLASS  A-12
CERTIFICATES.  THE  YIELD  TO MATURITY  OF  THE  CLASS M  CERTIFICATES  WILL, IN
ADDITION, BE  MORE  SENSITIVE  TO  THE  AMOUNT  AND  TIMING  OF  LOSSES  DUE  TO
LIQUIDATIONS  OF THE MORTGAGE LOANS THAN THE  CLASS A CERTIFICATES, IN THE EVENT
THAT THE CLASS B PRINCIPAL BALANCE HAS BEEN REDUCED TO ZERO. SEE "DESCRIPTION OF
THE   CERTIFICATES--INTEREST",   "--PRINCIPAL   (INCLUDING   PREPAYMENTS)"   AND
"--SUBORDINATION OF CLASS M AND CLASS B CERTIFICATES" HEREIN AND "PREPAYMENT AND
YIELD CONSIDERATIONS" HEREIN AND IN THE PROSPECTUS.
 
    THE WEIGHTED AVERAGE LIVES OF THE CLASS A-16 AND CLASS A-17 CERTIFICATES, TO
THE  EXTENT OF THEIR COMPANION COMPONENTS, WILL BE PARTICULARLY SENSITIVE TO THE
RATE OF PREPAYMENT ON THE MORTGAGE  LOANS AT OR ABOVE CERTAIN PREPAYMENT  LEVELS
BECAUSE PAYMENTS OF PRINCIPAL ALLOCATED TO THE CLASS A CERTIFICATES IN EXCESS OF
AMOUNTS  RESULTING FROM SUCH  PREPAYMENT LEVELS WILL  BE PAID IN  RESPECT OF THE
COMPANION COMPONENTS RATHER THAN  TO THE PAC CERTIFICATES  OR IN RESPECT OF  THE
PAC COMPONENTS. SEE "DESCRIPTION OF THE CERTIFICATES--INTEREST" AND "--PRINCIPAL
(INCLUDING PREPAYMENTS)" HEREIN AND "PREPAYMENT AND YIELD CONSIDERATIONS" HEREIN
AND IN THE PROSPECTUS.
 
    The Offered Certificates, other than the Class A-10, Class A-11, Class A-12,
Class  A-R,  Class  A-LR  and  Class M  Certificates,  will  be  issued  only in
book-entry form (the "Book-Entry Certificates") and purchasers thereof will  not
be   entitled  to  receive   definitive  certificates  except   in  the  limited
circumstances set forth herein. The  Book-Entry Certificates will be  registered
in  the name of  Cede & Co., as  nominee of The  Depository Trust Company, which
will be the "holder" or "Certificateholder" of such Certificates, as such  terms
are used herein. See "Description of the Certificates" herein.
 
    There  is currently  no secondary  market for  the Offered  Certificates and
there can be no assurance  that a secondary market will  develop or, if it  does
develop, that it will provide Certificateholders with liquidity of investment at
any particular time or for the life of the Offered Certificates. The Underwriter
intends  to  act as  a  market maker  in  the Offered  Certificates,  subject to
applicable provisions of federal and state securities laws and other  regulatory
requirements,  but is under no obligation to do so. THE CLASS M CERTIFICATES MAY
NOT BE PURCHASED BY OR TRANSFERRED TO AN ERISA PLAN EXCEPT UPON THE DELIVERY  OF
AN  OPINION OF COUNSEL AS PROVIDED HEREIN.  IN ADDITION, THE CLASS A-R AND CLASS
A-LR CERTIFICATES MAY NOT BE PURCHASED BY OR TRANSFERRED TO (I) A  "DISQUALIFIED
ORGANIZATION"  OR  "BOOK-ENTRY  NOMINEE,"  (II)  EXCEPT  UNDER  CERTAIN  LIMITED
CIRCUMSTANCES, PERSONS WHO ARE NOT "U.S.  PERSONS," (III) AN ERISA PLAN OR  (IV)
ANY  PERSON OR ENTITY WHO THE TRANSFEROR HAS REASON TO BELIEVE INTENDS TO IMPEDE
THE ASSESSMENT  OR COLLECTION  OF  ANY FEDERAL,  STATE  OR LOCAL  TAXES  LEGALLY
REQUIRED  TO  BE  PAID  WITH RESPECT  THERETO.  See  "ERISA  Considerations" and
"Description of the  Certificates--Restrictions on  Transfer of  the Class  A-R,
Class  A-LR and  Class M Certificates"  herein, and "Certain  Federal Income Tax
Consequences--Federal Income Tax  Consequences for REMIC  Certificates--Taxation
of  Residual  Certificates--Tax-Related  Restrictions  on  Transfer  of Residual
Certificates" in the Prospectus.
 
    For federal income tax purposes, the  Trust Estate will consist of two  real
estate  mortgage investment conduits (each a  "REMIC" or in the alternative, the
"Lower-Tier REMIC" and the "Upper-Tier REMIC," respectively). As described  more
fully  herein and in the Prospectus, the  Class A-1, Class A-2, Class A-3, Class
A-4, Class A-5, Class A-6,  Class A-7, Class A-8,  Class A-9, Class A-10,  Class
A-11, Class A-12, Class A-13, Class A-14, Class A-15, Class A-16, Class A-17 and
Class A-18 Certificates, the Class M Certificates and each subclass of the Class
B  Certificates will constitute "regular interests"  in the Upper-Tier REMIC and
the Class  A-R  and  Class  A-LR  Certificates  will  constitute  the  "residual
interests"   in  the  Upper-Tier  REMIC   and  Lower-Tier  REMIC,  respectively.
PROSPECTIVE INVESTORS ARE CAUTIONED THAT THE CLASS A-R CERTIFICATEHOLDER'S REMIC
TAXABLE  INCOME  AND  THE  TAX  LIABILITY  THEREON  WILL,  AND  THE  CLASS  A-LR
CERTIFICATEHOLDER'S  REMIC  TAXABLE INCOME  AND THE  TAX LIABILITY  THEREON MAY,
EXCEED CASH DISTRIBUTIONS TO SUCH HOLDERS DURING CERTAIN PERIODS, IN WHICH EVENT
SUCH HOLDERS MUST HAVE SUFFICIENT ALTERNATIVE  SOURCES OF FUNDS TO PAY SUCH  TAX
LIABILITY.  See "Summary  Information--Federal Income  Tax Status"  and "Federal
Income  Tax   Considerations"   herein   and   "Certain   Federal   Income   Tax
Consequences--Federal  Income Tax  Consequences for  REMIC Certificates"  in the
Prospectus.
 
    The Class A Certificates (other than the Class A-18 Certificates)  represent
nineteen Subclasses of a Class and the Class M Certificates represent a Class of
a  separate Series of Certificates  being offered by the  Seller pursuant to the
Prospectus dated  May  19, 1992  accompanying  this Prospectus  Supplement.  Any
prospective  investor  should not  purchase  any Offered  Certificates described
herein unless  it  shall  have  received  the  Prospectus  and  this  Prospectus
Supplement.  The  Prospectus  shall  not  be  considered  complete  without this
Prospectus Supplement. The Prospectus  contains important information  regarding
this offering which is not contained herein, and prospective investors are urged
to read, in full, the Prospectus and this Prospectus Supplement.
 
    UNTIL  NOVEMBER 16, 1992, ALL DEALERS  EFFECTING TRANSACTIONS IN THE OFFERED
CERTIFICATES, WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED
TO DELIVER THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS. THIS IS IN ADDITION TO
THE OBLIGATION  OF  DEALERS  TO  DELIVER  THIS  PROSPECTUS  SUPPLEMENT  AND  THE
PROSPECTUS  WHEN  ACTING  AS  UNDERWRITERS  AND  WITH  RESPECT  TO  THEIR UNSOLD
ALLOTMENTS OR SUBSCRIPTIONS.
                          ----------------------------
 
                                      S-2
<PAGE>
                               TABLE OF CONTENTS
 
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                                             PAGE
                                                                             ----
<S>                                                                          <C>
Summary Information........................................................  S-4
Description of the Certificates............................................  S-20
  General..................................................................  S-20
  Book-Entry Registration..................................................  S-20
  Definitive Certificates..................................................  S-21
  Distributions............................................................  S-21
  Interest.................................................................  S-23
  Determination of LIBOR...................................................  S-27
  Principal (Including Prepayments)........................................  S-28
    CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A CERTIFICATES....  S-29
    CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS M CERTIFICATES....  S-31
    ALLOCATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A AND CLASS M
     CERTIFICATES..........................................................  S-33
    PRINCIPAL PAYMENT CHARACTERISTICS OF THE PAC CERTIFICATES, PAC
     COMPONENTS AND
     COMPANION COMPONENTS..................................................  S-49
  Additional Rights of the Class A-R and Class A-LR Certificateholders.....  S-51
  Periodic Advances........................................................  S-51
  Restrictions on Transfer of the Class A-R, Class A-LR and Class M
   Certificates............................................................  S-52
  Reports..................................................................  S-53
  Subordination of Class M and Class B Certificates........................  S-54
    ALLOCATION OF LOSSES...................................................  S-54
Description of the Mortgage Loans..........................................  S-57
  Mandatory Repurchase or Substitution of Mortgage Loans...................  S-63
  Optional Repurchase of Defaulted Mortgage Loans..........................  S-63
Origination, Delinquency and Foreclosure Experience........................  S-64
  Loan Origination.........................................................  S-64
  Delinquency and Foreclosure Experience...................................  S-64
Prepayment and Yield Considerations........................................  S-68
  Sensitivity of Class A-10 Certificates...................................  S-78
  Sensitivity of Class A-12 Certificates...................................  S-79
Pooling and Servicing Agreement............................................  S-80
  General..................................................................  S-80
  Voting...................................................................  S-81
  Trustee..................................................................  S-81
  Servicing Compensation and Payment of Expenses...........................  S-81
  Optional Termination.....................................................  S-81
Federal Income Tax Considerations..........................................  S-82
  Regular Certificates.....................................................  S-82
  Residual Certificate.....................................................  S-83
ERISA Considerations.......................................................  S-84
Legal Investment...........................................................  S-85
Secondary Market...........................................................  S-86
Underwriting...............................................................  S-86
Legal Matters..............................................................  S-86
Use of Proceeds............................................................  S-86
Ratings....................................................................  S-87
Index of Significant Prospectus Supplement Definitions.....................  S-88
</TABLE>
 
                                      S-3
<PAGE>
                              SUMMARY INFORMATION
 
    THE  FOLLOWING IS  QUALIFIED IN  ITS ENTIRETY  BY REFERENCE  TO THE DETAILED
INFORMATION APPEARING  ELSEWHERE  IN  THIS  PROSPECTUS  SUPPLEMENT  AND  IN  THE
ACCOMPANYING  PROSPECTUS  (THE  "PROSPECTUS"). CAPITALIZED  TERMS  USED  IN THIS
PROSPECTUS SUPPLEMENT  AND  NOT  OTHERWISE  DEFINED  HEREIN  HAVE  THE  MEANINGS
ASSIGNED  IN  THE PROSPECTUS.  SEE "INDEX  OF SIGNIFICANT  PROSPECTUS SUPPLEMENT
DEFINITIONS" HEREIN AND "INDEX OF SIGNIFICANT DEFINITIONS" IN THE PROSPECTUS.
 
<TABLE>
<S>                     <C>
Title of Securities...  Mortgage Pass-Through Certificates, Series 1992-26  (the
                        "Series 1992-26 Certificates" or the "Certificates").
 
Seller................  The  Prudential Home  Mortgage Securities  Company, Inc.
                        (the "Seller"). See "The Seller" in the Prospectus.
 
Servicer..............  The Prudential  Home  Mortgage  Company,  Inc.  (in  its
                        capacity   as   servicer,  the   "Servicer;"  otherwise,
                        "PHMC"). See  "Servicing  of  the  Mortgage  Loans"  and
                        "PHMC--General" in the Prospectus.
 
Trustee...............  First  Trust  National Association,  a  national banking
                        association (the "Trustee"). See "Pooling and  Servicing
                        Agreement--Trustee" in this Prospectus Supplement.
 
Rating of
  Certificates........  It  is  a  condition  to the  issuance  of  the  Class A
                        Certificates offered by  this Prospectus Supplement  and
                        the  Prospectus that they shall have been rated "Aaa" by
                        Moody's Investors Service, Inc. ("Moody's") and "AAA" by
                        Fitch  Investors  Service,  Inc.  ("Fitch").  It  is   a
                        condition  to the  issuance of the  Class M Certificates
                        that they shall  have been  rated "Aa2"  by Moody's  and
                        "AA"  by Fitch. The ratings by Moody's and Fitch are not
                        recommendations to buy, sell  or hold such  Certificates
                        and may be subject to revision or withdrawal at any time
                        by  the  assigning  rating agency.  The  ratings  do not
                        address the possibility that,  as a result of  principal
                        prepayments,  holders of such Certificates may receive a
                        lower than anticipated yield. See
                        "--Effects of  Prepayments on  Investment  Expectations"
                        below and "Ratings" in this Prospectus Supplement.
 
Description of
  Certificates........  The  Series 1992-26 Certificates will consist of Class A
                        Certificates,  Class   M   Certificates  and   Class   B
                        Certificates.  The Class A Certificates represent a type
                        of interest  referred to  in the  Prospectus as  "Senior
                        Certificates;" and the Class M and Class B Certificates,
                        a   type  of  interest   referred  to  as  "Subordinated
                        Certificates." As these designations suggest, the  Class
                        A  Certificates  are  entitled  to  a  certain priority,
                        relative to the  Class M  and Class  B Certificates,  in
                        right  of distributions on the mortgage loans underlying
                        the Series 1992-26 Certificates (the "Mortgage  Loans").
                        As  between  the Class  M Certificates  and the  Class B
                        Certificates, the Class M Certificates are entitled to a
                        certain  priority  in  right  of  distributions  on  the
                        Mortgage  Loans. See  "--Distributions of  Principal and
                        Interest" below.
 
                        Initially, the Class A Certificates will evidence in the
                        aggregate   an    approximate   94.50%    (approximately
                        $332,361,000 undivided interest in the initial aggregate
                        principal  balance of  the Mortgage  Loans; the  Class M
                        Certificates  will   evidence   in  the   aggregate   an
</TABLE>
 
                                      S-4
<PAGE>
 
<TABLE>
<S>                     <C>
                        approximate  1.75% (approximately  $6,154,000) undivided
                        interest in the initial  aggregate principal balance  of
                        the  Mortgage Loans;  and the Class  B Certificates will
                        evidence  in   the   aggregate  an   approximate   3.75%
                        (approximately  $13,190,239)  undivided interest  in the
                        initial aggregate  principal  balance  of  the  Mortgage
                        Loans.  The  relative  interests in  the  aggregate out-
                        standing  principal  balance   of  the  Mortgage   Loans
                        represented  by  the  Class  A,  Class  M  and  Class  B
                        Certificates are subject to change over time because  of
                        the  disproportionate allocation  of certain unscheduled
                        principal payments  to the  Class A  Certificates for  a
                        specified  period and  the allocation  of certain losses
                        and  certain   shortfalls   first   to   the   Class   B
                        Certificates,  until  the  aggregate  principal  balance
                        thereof has been reduced to zero, and then to the  Class
                        M  Certificates, until  the aggregate  principal balance
                        thereof  has  been  reduced   to  zero,  prior  to   the
                        allocation  of such losses and shortfalls to the Class A
                        Certificates,  as  discussed   in  "--Distributions   of
                        Principal  and of  Interest" and  "--Credit Enhancement"
                        below.
 
                        The  Class  A  Certificates   will  consist  of   twenty
                        subclasses,  designated  as  the Class  A-1,  Class A-2,
                        Class A-3, Class A-4, Class  A-5, Class A-6, Class  A-7,
                        Class  A-8,  Class A-9,  Class  A-10, Class  A-11, Class
                        A-12, Class A-13,  Class A-14, Class  A-15, Class  A-16,
                        Class  A-17,  Class  A-18,  Class  A-R  and  Class  A-LR
                        Certificates. The Class  A-18 Certificates  are not  of-
                        fered  hereby.  The  Class M  Certificates  will  not be
                        divided into subclasses. The  Class B Certificates  will
                        consist of four subclasses, designated as the Class B-1,
                        Class B-2, Class B-3 and Class B-4 Certificates, none of
                        which  are  offered  hereby.  The  Class  A Certificates
                        (other than  the Class  A-18 Certificates)  and Class  M
                        Certificates  are referred to in this Prospectus Supple-
                        ment as the  "Offered Certificates."  References to  the
                        "Subordinated Certificates" are to the Class M and Class
                        B  Certificates. The Class A-18  Certificates and one or
                        more of the  subclasses of Class  B Certificates may  be
                        retained or sold by the Seller.
 
                        The  Class A-1, Class  A-2, Class A-3,  Class A-4, Class
                        A-5, Class A-6, Class A-7,  Class A-8, Class A-9,  Class
                        A-10,  Class A-11,  Class A-12, Class  A-13, Class A-14,
                        and Class  A-15  Certificates are  planned  amortization
                        class  certificates and referred  to herein collectively
                        as the  "PAC Certificates."  The Class  A-1, Class  A-2,
                        Class  A-3, Class A-4, Class  A-5, Class A-7, Class A-8,
                        Class  A-9,  Class  A-10,  Class  A-11  and  Class  A-12
                        Certificates are also referred to herein collectively as
                        the "PAC I Certificates." The Class A-13, Class A-14 and
                        Class  A-15 are also referred  to herein collectively as
                        the "PAC II Certificates."
 
                        The Class A-16 and Class A-17 Certificates will  exhibit
                        principal   payment  characteristics   of  both  planned
                        amortization   class    certificates    and    companion
                        certificates.  Solely  for  the  purpose  of determining
                        distributions in  reduction  of principal  balance,  the
                        Class  A-16  and Class  A-17  Certificates will  each be
                        deemed to consist  of multiple  components as  described
                        herein.  THE  OWNER  OF  A  CLASS  A-16  OR  CLASS  A-17
                        CERTIFICATE WILL NOT HAVE A
</TABLE>
 
                                      S-5
<PAGE>
 
<TABLE>
<S>                     <C>
                        SEVERABLE INTEREST IN ANY ONE COMPONENT BUT WILL HAVE AN
                        UNDIVIDED INTEREST  IN THE  ENTIRE SUBCLASS.  The  Class
                        A-16  Certificates  will consist  of PAC  I, PAC  II and
                        Companion Components  and  the Class  A-17  Certificates
                        will  consist of PAC  I and Companion  Components. PAC I
                        Components and  PAC II  Components have  characteristics
                        similar  to PAC I Certificates  and PAC II Certificates,
                        respectively, and are referred to herein collectively as
                        the "PAC  Components."  "Companion  Components"  receive
                        payments   of  principal   allocated  to   the  Class  A
                        Certificates in  excess  of  certain  prepayment  levels
                        prior to payments of such excess to the PAC Certificates
                        and PAC Components.
 
                        The  Offered Certificates have the approximate aggregate
                        initial principal  balances set  forth on  the cover  of
                        this  Prospectus Supplement. Any  difference between the
                        aggregate principal balance of the  Class A and Class  M
                        Certificates  as of the  date of issuance  of the Series
                        1992-26  Certificates   and  the   approximate   initial
                        aggregate  principal balance of the  Class A and Class M
                        Certificates  as  of   the  date   of  this   Prospectus
                        Supplement  will  not,  with  respect  to  the  Class  A
                        Certificates (other than  the Class A-18  Certificates),
                        exceed  5% of the initial aggregate principal balance of
                        such Class A  Certificates stated on  the cover of  this
                        Prospectus  Supplement and, with respect  to the Class M
                        Certificates, will  depend  on the  final  subordination
                        levels   for  the   Series  1992-26   Certificates.  Any
                        difference allocated to the Class A Certificates will be
                        allocated among the subclasses  of Class A  Certificates
                        other  than  the Class  A-18, Class  A-R and  Class A-LR
                        Certificates.
 
Forms of Certificates;
  Denominations.......  BOOK-ENTRY FORM.  The  Offered Certificates (other  than
                        the Class A-10, Class A-11, Class A-12, Class A-R, Class
                        A-LR  and  Class  M  Certificates)  will  be  issued  in
                        book-entry  form,   through   the  facilities   of   The
                        Depository Trust Company ("DTC"). These Certificates are
                        referred  to,  collectively,  in  this  Prospectus  Sup-
                        plement as the "Book-Entry Certificates." An investor in
                        a subclass of Book-Entry Certificates will not receive a
                        physical certificate representing its ownership interest
                        in   such   Book-Entry   Certificates,   except    under
                        extraordinary  circumstances,  which  are  discussed  in
                        "Description of  the  Certificates--Definitive  Certifi-
                        cates"  in this Prospectus Supplement. Instead, DTC will
                        effect payments and transfers by means of its electronic
                        recordkeeping   services,    acting   through    certain
                        participating  organizations. This may result in certain
                        delays in receipt  of distributions by  an investor  and
                        may restrict an investor's ability to pledge its securi-
                        ties.   The  rights  of   investors  in  the  Book-Entry
                        Certificates may generally only be exercised through DTC
                        and its participating organizations. See "Description of
                        the  Certificates--Book-Entry   Registration"  in   this
                        Prospectus Supplement.
 
                        The  Book-Entry Certificates  will be  issued in minimum
                        denominations of $100,000 initial principal balance. Any
                        amounts in  excess  of  $100,000  will  be  in  integral
                        multiples of $1,000 initial principal balance.
</TABLE>
 
                                      S-6
<PAGE>
 
<TABLE>
<S>                     <C>
                        CERTIFICATED  FORM.   The Class A-10,  Class A-11, Class
                        A-12, Class  A-R, Class  A-LR and  Class M  Certificates
                        will  be offered in fully registered, certificated form.
                        Accordingly, an investor in  any such subclass or  class
                        will  be issued a  physical certificate representing its
                        ownership interest.
 
                        The Class A-10  Certificates will be  issued in  minimum
                        denominations  of $10,000 initial principal balance. Any
                        amounts  in  excess  of  $10,000  will  be  in  integral
                        multiples  of  $1 initial  principal balance.  The Class
                        A-11 and  Class  A-12  Certificates will  be  issued  in
                        minimum  denominations  of  $100,000  initial  principal
                        balance. Any amounts  in excess of  $100,000 will be  in
                        integral  multiples of $1,000 initial principal balance.
                        The Class  M  Certificates  will be  issued  in  minimum
                        denominations of $100,000 initial principal balance. Any
                        amounts  in  excess  of  $100,000  will  be  in integral
                        multiples of $1,000 initial principal balance. The Class
                        A-R and Class A-LR Certificates will each be issued in a
                        single certificate with a denomination of $1,000 initial
                        principal   balance.    See    "Description    of    the
                        Certificates--General" in this Prospectus Supplement.
 
Mortgage Loans........  MORTGAGE  LOAN DATA.  The  Mortgage Loans, which are the
                        source of distributions to holders of the Series 1992-26
                        Certificates, are expected  to consist of  conventional,
                        fixed interest rate, monthly pay, fully amortizing, one-
                        to four-family, residential first mortgage loans, having
                        original  terms to  stated maturity  of approximately 15
                        years, including  loans  secured  by  shares  issued  by
                        cooperative housing corporations. The Mortgage Loans are
                        expected to have the further specifications set forth in
                        the   table  appearing  below   and  under  the  heading
                        "Description of the Mortgage  Loans" in this  Prospectus
                        Supplement.
 
                        Some  of the Mortgage Loans  are expected to be Mortgage
                        Loans originated in  connection with  the relocation  of
                        employees  of various  corporate employers participating
                        in PHMC's relocation program and of employees of various
                        non-participant employers.
</TABLE>
 
                                      S-7
<PAGE>
 
<TABLE>
<S>                             <C>
SELECTED MORTGAGE LOAN DATA
(AS  OF   THE  CUT-OFF   DATE)
Cut-Off Date:                   August 1, 1992
Number of Mortgage Loans:       1,260
Aggregate   Unpaid   Principal
  Balance 1:                    $351,705,239
 
Range  of   Unpaid   Principal  $28,400 to $997,217
  Balances 1:
Average Unpaid Principal
  Balance 1:                    $279,131
 
Range of Interest Rates:        7.750% to 9.375%
Weighted    Average   Interest  8.539%
  Rate 1:
 
Range of  Remaining  Terms  to
  Stated Maturity:              171 months to 180 months
Weighted   Average   Remaining
  Term to Stated Maturity 1:    178 months
 
Range of Original
  Loan-to-Value Ratios:         15.53% to 90.00%
Weighted   Average    Original
  Loan-to-Value Ratio 1:        65%
 
(1) approximate
- --------------------------------------------------------------------------------
</TABLE>
 
<TABLE>
<S>                     <C>
                        CHANGES  TO POOL.  A number of Mortgage Loans may be re-
                        moved from the pool, or  a substitution may be made  for
                        certain  Mortgage Loans,  in advance of  the issuance of
                        the Series 1992-26  Certificates (which  is expected  to
                        occur  on or about August 28,  1992). This may result in
                        changes in certain of the pool characteristics set forth
                        in the  table above  and  elsewhere in  this  Prospectus
                        Supplement.  See "Description of  the Mortgage Loans" in
                        this Prospectus Supplement.
                        Subsequent  to  the  issuance  of  the  Series   1992-26
                        Certificates, certain Mortgage Loans may be removed from
                        the   pool   through   repurchase   or,   under  certain
                        circumstances,  substitution  by  the  Seller,  if   the
                        Mortgage   Loans  are   discovered  to   have  defective
                        documentation or if they otherwise do not conform to the
                        standards established  by the  Seller's  representations
                        and   warranties  concerning  the  Mortgage  Loans.  See
                        "Description of the Mortgage Loans--Mandatory Repurchase
                        or Substitution of  Mortgage Loans"  in this  Prospectus
                        Supplement.  The  Seller may  also  repurchase defaulted
                        Mortgage  Loans.  See   "Description  of  the   Mortgage
                        Loans--Optional  Repurchase of Defaulted Mortgage Loans"
                        in this Prospectus Supplement.
                        The Servicer is entitled, subject to certain  conditions
                        relating  to  the then-remaining  size  of the  pool, to
                        purchase all outstanding Mortgage Loans in the pool  and
                        thereby  effect early  retirement of  the Series 1992-26
                        Certificates. See "Pooling and Servicing
                        Agreement--Optional  Termination"  in  this   Prospectus
                        Supplement.
Distributions of
  Principal and
  Interest............  DISTRIBUTIONS  IN GENERAL.  Distributions on  the Series
                        1992-26 Certificates will  be made  on the  25th day  of
                        each month or, if such day is not a business day, on the
                        succeeding  business day (each such  date is referred to
                        in this Prospectus Supplement as
</TABLE>
 
                                      S-8
<PAGE>
 
<TABLE>
<S>                     <C>
                        a "Distribution Date"), commencing in September 1992, to
                        holders of record at the  close of business on the  last
                        business  day of the preceding month. In the case of the
                        Book-Entry Certificates, the  holder of  record will  be
                        DTC.
                        The   amount   available   for   distribution   on   any
                        Distribution Date is primarily a function of the  amount
                        remitted  by mortgagors of the Mortgage Loans in payment
                        of  their  scheduled   installments  of  principal   and
                        interest,  as well as the  amount of prepayments made by
                        the  mortgagors  and   proceeds  from  liquidations   of
                        defaulted Mortgage Loans.
                        On  any  Distribution  Date,  holders  of  the  Class  A
                        Certificates will be entitled to receive all amounts due
                        them before any distributions are made to holders of the
                        Class M and  Class B Certificates  on that  Distribution
                        Date.  The amount that is available to be distributed on
                        any Distribution  Date will  be allocated  first to  pay
                        interest  due holders  of the  Class A  Certificates and
                        then, if the amount  available for distribution  exceeds
                        the  amount  of  interest  due holders  of  the  Class A
                        Certificates,  to  reduce   the  outstanding   principal
                        balance of the Class A Certificates. The likelihood that
                        a  holder  of  a  particular  subclass  of  the  Class A
                        Certificates will receive principal distributions on any
                        Distribution Date will depend  on the priority in  which
                        such subclass is entitled to principal distributions, as
                        set   forth  under  the   heading  "Description  of  the
                        Certificates--Principal   (Including   Prepayments)--Al-
                        location  of Amount to be Distributed to the Class A and
                        Class M Certificates," in this Prospectus Supplement.
                        After all amounts  due on the  Class A Certificates  for
                        any   Distribution  Date  have  been  paid,  the  amount
                        remaining will be distributed,  in the following  order,
                        to   (i)  pay  interest  due  holders  of  the  Class  M
                        Certificates, (ii) reduce the outstanding principal bal-
                        ance of the Class M Certificates, (iii) pay interest due
                        to the  holders of  the Class  B Certificates  and  (iv)
                        reduce  the outstanding principal balance of the Class B
                        Certificates.
                        If  any  mortgagor  is  delinquent  in  the  payment  of
                        principal  or interest on a  Mortgage Loan in any month,
                        the  Servicer  will  advance  such  payment  unless  the
                        Servicer  determines that the delinquent amount will not
                        be recoverable by it from liquidation proceeds or  other
                        recoveries   on   the   related   Mortgage   Loan.   See
                        "Description of the Certificates--Periodic Advances."
                        INTEREST DISTRIBUTIONS. The amount of interest to  which
                        holders   of   each   subclass  or   class   of  Offered
                        Certificates, other than the  Class A-10 and Class  A-LR
                        Certificates,  will be entitled each month is calculated
                        based on  the  outstanding  principal  balance  of  that
                        subclass  or class, as of the related Distribution Date.
                        Interest will accrue each month on each such subclass or
                        class according to the following formula: 1/12th of  the
                        pass-through  rate for such subclass or class multiplied
                        by the outstanding principal balance of such subclass or
                        class  as  of   the  related   Distribution  Date.   The
                        pass-through rate for each such subclass or class, other
                        than  the  Class A-11  and  Class A-12  Certificates, is
</TABLE>
 
                                      S-9
<PAGE>
 
<TABLE>
<S>                     <C>
                        the percentage set forth on the cover of this Prospectus
                        Supplement. The pass-through  rates for  the Class  A-11
                        and  Class  A-12  Certificates  will  be  determined  as
                        described in the following paragraph.
                        During the initial LIBOR  Based Interest Accrual  Period
                        (as  described  below),  the pass-through  rate  for the
                        Class A-11 Certificates will be 4.025% per annum. During
                        each subsequent LIBOR Based Interest Accrual Period, the
                        pass-through rate for the  Class A-11 Certificates  will
                        be  a per  annum rate equal  to the lesser  of (i) 0.65%
                        plus LIBOR  and (ii)  approximately 10.00%.  During  the
                        initial  LIBOR Based Interest  Accrual Period, the pass-
                        through rate  for the  Class A-12  Certificates will  be
                        1190.08246%  per  annum.  During  each  subsequent LIBOR
                        Based Interest Accrual Period, the pass-through rate for
                        the Class A-12  Certificates will be  a per annum  rate,
                        subject  to a minimum  rate of 0% and  a maximum rate of
                        1862.322286%, equal to (i)  1862.322286% minus (ii)  the
                        product  of 199.1821705 and  LIBOR. As a  result of this
                        calculation, increasing levels of  LIBOR will produce  a
                        reduced   pass-through   rate   for   the   Class   A-12
                        Certificates  (subject  to  the  minimum  rate),   while
                        decreasing  levels  of LIBOR  will produce  an increased
                        pass-through  rate  (subject   to  the  maximum   rate).
                        Interest  will accrue on  the Class A-11  and Class A-12
                        Certificates during each one-month period commencing  on
                        the 25th day of each month and ending on the 24th day of
                        the  following  month  (each,  a  "LIBOR  Based Interest
                        Accrual Period"). The initial  LIBOR Based Interest  Ac-
                        crual Period will commence on August 25, 1992.
                        The  amount of  interest to  which holders  of the Class
                        A-10 Certificates are entitled each month is  calculated
                        based  on the outstanding  principal balances of certain
                        subclasses of the  Class A  Certificates. Interest  will
                        accrue  on the Class A-10  Certificates each month in an
                        amount equal to the sum of (i) the product of 1/12th  of
                        1.00% and the outstanding principal balance of the Class
                        A-2  Certificates, (ii)  the product of  1/12th of 0.35%
                        and the outstanding principal  balance of the Class  A-7
                        Certificates,  (iii) the product of  1/12th of 0.50% and
                        the outstanding  principal  balance  of  the  Class  A-8
                        Certificates and (iv) the product of 1/12th of 7.50% and
                        the  outstanding  principal  balance of  the  Class A-10
                        Certificates. In  each case,  the outstanding  principal
                        balance  for each such subclass will be calculated as of
                        the related Distribution Date before taking into account
                        distributions of principal for such Distribution Date.
                        The amount of interest to which the holder of the  Class
                        A-LR  Certificate is  entitled each  month is calculated
                        based on a "notional amount,"  which is an amount  other
                        than  the actual  outstanding principal  balance of such
                        subclass. The method of determining the notional  amount
                        of   the  Class  A-LR  Certificate  is  described  under
                        "Description  of  the  Certificates--Interest"  in  this
                        Prospectus Supplement. Interest will accrue on the Class
                        A-LR  Certificate each month  in an amount  equal to the
                        product of (i)  1/12th of  7.50% and  (ii) the  notional
                        amount of the Class A-LR Certificate.
</TABLE>
 
                                      S-10
<PAGE>
 
<TABLE>
<S>                     <C>
                        When  mortgagors prepay  principal or  when principal is
                        recovered through foreclosures or other liquidations  of
                        defaulted  Mortgage Loans,  a full  month's interest for
                        the month  of payment  or recovery  may not  be paid  or
                        recovered,  resulting in  interest shortfalls.  Any such
                        shortfalls that  result  from principal  prepayments  IN
                        FULL  will be offset from  aggregate servicing fees that
                        would otherwise  be  payable  to  the  Servicer  on  any
                        Distribution  Date, but only to  the extent of servicing
                        fees payable  with respect  to that  Distribution  Date.
                        Shortfalls  in  collections of  interest  resulting from
                        principal prepayments IN FULL, to the extent they exceed
                        the aggregate  servicing  fees, will  be  allocated  pro
                        rata,  based on interest accrued,  among all classes and
                        subclasses  of  the  Series  1992-26  Certificates.  Any
                        shortfalls  of interest  that result from  the timing of
                        PARTIAL  principal   prepayments  or   liquidations   of
                        defaulted  Mortgage  Loans  will not  be  offset  by the
                        servicing fees but will  be borne first  by the Class  B
                        Certificates,  second  by the  Class M  Certificates and
                        finally by the Class A Certificates. See "Description of
                        the Certificates--Subordination of the Class M and Class
                        B Certificates" in this Prospectus Supplement.
                        In addition,  the  amount  of interest  required  to  be
                        distributed   to   holders   of   the   Series   1992-26
                        Certificates will  be reduced  by a  portion of  certain
                        special  hazard  losses,  fraud  losses  and  bankruptcy
                        losses attributable  to interest.  See "Credit  Enhance-
                        ment--Extent of Loss Coverage" below and "Description of
                        the    Certificates--Interest"   in    this   Prospectus
                        Supplement.
                        To the extent that the amount available for distribution
                        on any Distribution Date  is insufficient to permit  the
                        distribution   of  the  applicable   amount  of  accrued
                        interest  on  the  Class  A  Certificates  (net  of  any
                        shortfalls   and  losses   allocable  to   the  Class  A
                        Certificates  as  described   in  the  two   immediately
                        preceding  paragraphs),  the  amount of  interest  to be
                        distributed will  be  allocated  among  the  outstanding
                        subclasses   of  Class   A  Certificates   pro  rata  in
                        accordance  with   their  respective   entitlements   to
                        interest, and the amount of any deficiency will be added
                        to  the amount of interest that the Class A Certificates
                        are  entitled  to  receive  on  subsequent  Distribution
                        Dates. No interest will accrue on such deficiencies.
                        To the extent that the amount available for distribution
                        on  any  Distribution  Date, after  the  payment  of all
                        amounts due the Class A  Certificates has been made,  is
                        insufficient  to permit distribution  in full of accrued
                        interest  on  the  Class  M  Certificates  (net  of  any
                        shortfalls  and losses allocable to the Class M Certifi-
                        cates as described above), the amount of any  deficiency
                        will be added to the amount of interest that the Class M
                        Certificates  are  entitled  to  receive  on  subsequent
                        Distribution Dates.  No  interest will  accrue  on  such
                        deficiencies.
                        Interest on the Class A and Class M Certificates will be
                        calculated  on the basis of a 360-day year consisting of
                        twelve 30-day months.
</TABLE>
 
                                      S-11
<PAGE>
 
<TABLE>
<S>                     <C>
                        See "Description of the Certificates--Interest" in  this
                        Prospectus Supplement.
                        PRINCIPAL   DISTRIBUTIONS.    The  aggregate  amount  of
                        principal  to  which   the  holders  of   the  Class   A
                        Certificates are entitled each month will be composed of
                        a  percentage of the scheduled  payments of principal on
                        the  Mortgage  Loans   and  a   percentage  of   certain
                        unscheduled payments of principal on the Mortgage Loans.
                        The  percentage of scheduled payments  will be equal, on
                        each Distribution Date, to the fraction that  represents
                        the  ratio of the  then-outstanding principal balance of
                        the Class  A  Certificates to  the  aggregate  principal
                        balance  of  the  outstanding Mortgage  Loans  (based on
                        their  amortization  schedules  then  in  effect).   The
                        percentage of certain unscheduled payments will be equal
                        to  the percentage  described in  the preceding sentence
                        plus an additional amount equal  to a percentage of  the
                        principal  otherwise distributable to the holders of the
                        Subordinated Certificates. As  a result, the  percentage
                        of  certain  unscheduled  principal  payments  otherwise
                        distributable  to  the   holders  of  the   Subordinated
                        Certificates   that  is  instead  distributable  to  the
                        holders of the  Class A  Certificates will  be equal  to
                        100%  during the first five years beginning on the first
                        Distribution Date and will decline during the subsequent
                        four years, as described under the heading  "Description
                        of   the   Certificates--Principal   (Including  Prepay-
                        ments)--Calculation of Amount to  be Distributed to  the
                        Class  A  Certificates" in  this  Prospectus Supplement,
                        until in year ten and  each year thereafter it is  equal
                        to  zero.  On each  Distribution Date,  the Subordinated
                        Certificates will  collectively be  entitled to  receive
                        the   percentages  of  the  scheduled  and  certain  un-
                        scheduled payments of  principal on  the Mortgage  Loans
                        equal,  in  each  case,  to  100%  less  the  applicable
                        percentage for the Class A Certificates described above.
                        Except   as   described   below   under   "--Effect   of
                        Subordination  Levels  on  Principal  Distributions", on
                        each Distribution Date, the Class M Certificates will be
                        entitled to a portion of scheduled payments and  certain
                        unscheduled  payments of principal on the Mortgage Loans
                        allocable  to   the   Subordinated   Certificates   that
                        represents  the ratio of  the then-outstanding principal
                        balance   of   the   Class   M   Certificates   to   the
                        then-outstanding  principal balance  of the Subordinated
                        Certificates.
                        The amount  that is  available for  distribution to  the
                        holders  of the Class A Certificates on any Distribution
                        Date as  a  distribution  of  principal  is  the  amount
                        remaining   after  deducting  the   amount  of  interest
                        distributable on the Class A Certificates from the total
                        amount collected that is available to be distributed  to
                        holders  of  the  Series  1992-26  Certificates  on such
                        Distribution Date. Principal will be distributed to  the
                        holders  of the Class A  Certificates in accordance with
                        the  payment  priorities  described  under  the  heading
                        "Description  of the  Certificates--Principal (Including
                        Prepayments)--Allocation of Amount to be Distributed" in
                        this Prospectus Supplement.
</TABLE>
 
                                      S-12
<PAGE>
 
<TABLE>
<S>                     <C>
                        The amount  that is  available for  distribution to  the
                        holders  of the Class M Certificates on any Distribution
                        Date as  a  distribution  of  principal  is  the  amount
                        remaining after all interest and principal distributions
                        due  on the Class A Certificates and interest due on the
                        Class M Certificates have  been deducted from the  total
                        amount  collected that is available to be distributed to
                        holders of the Series 1992-26 Certificates.
                        EFFECT   OF    SUBORDINATION   LEVELS    ON    PRINCIPAL
                        DISTRIBUTIONS.  In order to preserve the availability of
                        the original subordination levels as protection  against
                        losses   on  the  Class  M,  Class  B-1  and  Class  B-2
                        Certificates, some or all of the subclasses of the Class
                        B Certificates, as described below, may not be  entitled
                        on   certain  Distribution  Dates  to  distributions  of
                        principal and the principal  balance of such  subclasses
                        will not be considered for purposes of the allocation of
                        principal among the Subordinated Certificates.
                        In  the  case of  the Class  M  Certificates, if  on any
                        Distribution Date  the percentage  obtained by  dividing
                        the   outstanding  principal  balance  of  the  Class  B
                        Certificates by  the sum  of the  outstanding  principal
                        balances  of the Class  A, Class M  and Class B Certifi-
                        cates is less than such percentage was upon the  initial
                        issuance  of the  Series 1992-26  Certificates, then the
                        Class  B   Certificates   will  not   be   entitled   to
                        distributions of principal on such Distribution Date and
                        the  Class  M  Certificates  will  be  entitled  to  all
                        distributions of principal allocable to the Subordinated
                        Certificates for such Distribution Date.
                        In the case of the Class B-1 or Class B-2  Certificates,
                        if  on any Distribution Date  the percentage obtained by
                        dividing  the  outstanding  principal  balances  of  the
                        subclasses of Class B Certificates with higher numerical
                        designations  by  the sum  of the  outstanding principal
                        balances  of  the   Class  A,  Class   M  and  Class   B
                        Certificates  is less than such  percentage was upon the
                        initial issuance  of  the Series  1992-26  Certificates,
                        then  such  Class  B  subclasses  with  higher numerical
                        designations will not  be entitled  to distributions  of
                        principal  and the principal balances of such subclasses
                        will  not  be  taken   into  account  for  purposes   of
                        calculating  the portions  of scheduled  and unscheduled
                        principal payments allocable to the Class M Certificates
                        and to the subclasses of Class B Certificates with lower
                        numerical designations. In  any such case,  the Class  M
                        Certificates will receive a greater portion of scheduled
                        and  unscheduled payments  of principal  on the Mortgage
                        Loans allocable  to the  Subordinated Certificates  than
                        the  Class M  Certificates would  have received  had all
                        subclasses of the Class B Certificates been entitled  to
                        their   portion   of   such   principal   payments.  See
                        "Description of  the Certificates--Principal  (Including
                        Prepayments)--Calculation of Amount to be Distributed to
                        the Class M Certificates" in this Prospectus Supplement.
Credit Enhancement....  DESCRIPTION  OF "SHIFTING-INTEREST"  SUBORDINATION.  The
                        rights of the  holders of  the Class  M Certificates  to
                        receive distributions will be subordinated to the rights
                        of the holders of the Class A
</TABLE>
 
                                      S-13
<PAGE>
 
<TABLE>
<S>                     <C>
                        Certificates  to  receive distributions,  to  the extent
                        described herein. The rights of the holders of the Class
                        B  Certificates   to  receive   distributions  will   be
                        subordinated to the rights of the holders of the Class A
                        and Class M Certificates to receive distributions to the
                        extent  described herein. This  subordination provides a
                        certain amount of protection to the holders of the Class
                        A Certificates (to  the extent of  the subordination  of
                        the  Class M and  Class B Certificates)  and the Class M
                        Certificates (to the extent of the subordination of  the
                        Class  B Certificates) against delays  in the receipt of
                        scheduled payments of interest and principal and against
                        losses associated  with  the  liquidation  of  defaulted
                        Mortgage  Loans and losses resulting from the bankruptcy
                        of a mortgagor.
                        The protection  afforded  the  holders of  the  Class  A
                        Certificates  by  means  of this  subordination  will be
                        effected in two ways: (i)  by the preferential right  of
                        the  holders  of the  Class  A Certificates  to receive,
                        prior to any distribution being made on any Distribution
                        Date in respect of the Class M and Class B Certificates,
                        the amounts of interest and principal due the holders of
                        the Class A Certificates on such date and, if necessary,
                        by  the  right  of   such  holders  to  receive   future
                        distributions on the Mortgage Loans that would otherwise
                        have  been allocated to  the holders of  the Class M and
                        Class B Certificates; and (ii) by the allocation to  the
                        holders  of  the Class  M  and Class  B  Certificates of
                        certain  losses  resulting   from  the  liquidation   of
                        defaulted Mortgage Loans or the bankruptcy of mortgagors
                        prior to the allocation of such losses to the holders of
                        the Class A Certificates.
                        The  protection  afforded  the holders  of  the  Class M
                        Certificates by means of this subordination will also be
                        effected in two ways: (i)  by the preferential right  of
                        the  holders  of the  Class  M Certificates  to receive,
                        prior to any distribution being made on any Distribution
                        Date in respect of the Class B Certificates, the amounts
                        of interest and principal due the holders of the Class M
                        Certificates on  such date  and,  if necessary,  by  the
                        right of such holders to receive future distributions on
                        the  Mortgage  Loans  that  would  otherwise  have  been
                        allocated to the  holders of the  Class B  Certificates;
                        and (ii) by the allocation to the holders of the Class B
                        Certificates of certain losses resulting from the liqui-
                        dation  of defaulted Mortgage Loans or the bankruptcy of
                        mortgagors prior to the allocation of such losses to the
                        holders of the Class M Certificates.
                        In addition,  in order  to  increase the  period  during
                        which  the principal balances of the Class M and Class B
                        Certificates remain available  as credit enhancement  to
                        the  Class A Certificates,  a disproportionate amount of
                        prepayments  and  certain  unscheduled  recoveries  with
                        respect  to the Mortgage Loans  will be allocated to the
                        Class A Certificates  for a  certain period  of time  as
                        described  herein.  This  allocation has  the  effect of
                        accelerating   the   amortization   of   the   Class   A
                        Certificates while, in the
</TABLE>
 
                                      S-14
<PAGE>
 
<TABLE>
<S>                     <C>
                        absence  of  losses  in respect  of  the  liquidation of
                        defaulted Mortgage Loans  or losses  resulting from  the
                        bankruptcy  of  mortgagors,  increasing  the  respective
                        percentage interest  in  the principal  balance  of  the
                        Mortgage    Loans   evidenced    by   the   Subordinated
                        Certificates.
                        EXTENT OF LOSS  COVERAGE.  Realized  losses on  Mortgage
                        Loans,  other than  losses that are  (i) attributable to
                        "special hazards" not insured  against under a  standard
                        hazard  insurance  policy,  (ii)  incurred  on defaulted
                        Mortgage Loans  as  to  which there  was  fraud  in  the
                        origination of such Mortgage Loans or (iii) attributable
                        to  certain actions which  may be taken  by a bankruptcy
                        court in connection  with a Mortgage  Loan, including  a
                        reduction by a bankruptcy court of the principal balance
                        of  or  the  interest  rate on  a  Mortgage  Loan  or an
                        extension of its maturity, will not be allocated to  the
                        Class  A  Certificates  until  the  date  on  which  the
                        aggregate principal balance of the  Class M and Class  B
                        Certificates   (which  aggregate   balance  is  expected
                        initially to  be  approximately  $19,344,239)  has  been
                        reduced to zero and will not be allocated to the Class M
                        Certificates  until  the  date  on  which  the aggregate
                        principal balance  of the  Class B  Certificates  (which
                        aggregate   balance   is   expected   initially   to  be
                        approximately $13,190,239)  has  been reduced  to  zero.
                        Such losses will be allocated first among the subclasses
                        of  the Class B Certificates, in reverse numerical order
                        (that is, to  the Class  B-4, Class B-3,  Class B-2  and
                        Class  B-1  Certificates)  and  second  to  the  Class M
                        Certificates.
                        With respect to any Distribution Date subsequent to  the
                        first  Distribution Date, the availability of the credit
                        enhancement  provided  by  the  Class  B  and  Class   M
                        Certificates  will be affected by the prior reduction of
                        the principal  balances  of  the Class  M  and  Class  B
                        Certificates.  Reduction of the principal balance of the
                        Class M Certificates  and each subclass  of the Class  B
                        Certificates  will result from  (i) the prior allocation
                        of losses on  liquidation of  defaulted Mortgage  Loans,
                        including losses due to special hazards and fraud losses
                        up  to the respective limits referred to below, (ii) the
                        prior allocation of  bankruptcy losses up  to the  limit
                        referred  to  below  and  (iii)  the  prior  receipt  of
                        principal distributions by the holders of such class  or
                        subclasses.  As of  the date  of issuance  of the Series
                        1992-26 Certificates, the amount of losses  attributable
                        to  special hazards,  fraud and bankruptcy  that will be
                        absorbed solely by the holders  of the Class B  Certifi-
                        cates  and then  solely by  the holders  of the  Class M
                        Certificates will  be  approximately  1.95%,  2.00%  and
                        0.16%,  respectively, of the aggregate principal balance
                        of  the   Mortgage  Loans   as  of   the  Cut-Off   Date
                        (approximately   $6,858,252,  $7,034,105  and  $571,404,
                        respectively). If losses due  to special hazards,  fraud
                        or  bankruptcy exceed any  of such amounts  prior to the
                        principal  balances  of   the  Class  M   and  Class   B
                        Certificates  being reduced to zero, such losses will be
                        shared  pro   rata  by   the  subclasses   of  Class   A
                        Certificates,   the   Class  M   Certificates   and  the
                        subclasses of Class B Certificates. After the  principal
                        balances  of the Class  M and Class  B Certificates have
                        been reduced to zero,
</TABLE>
 
                                      S-15
<PAGE>
 
<TABLE>
<S>                     <C>
                        such losses will be shared pro rata by the subclasses of
                        Class A  Certificates  based on  their  then-outstanding
                        principal  balances.  Under  certain  circumstances, the
                        limits set forth above may be reduced as described under
                        "Description of the Certificates-- Subordination of  the
                        Class  M and Class B Certificates--Allocation of Losses"
                        in this Prospectus Supplement.
                        THE YIELD TO MATURITY ON  THE CLASS M CERTIFICATES  WILL
                        BE  MORE SENSITIVE TO LOSSES  DUE TO LIQUIDATIONS OF THE
                        MORTGAGE LOANS (AND THE TIMING THEREOF) THAN THE CLASS A
                        CERTIFICATES, IN THE EVENT THAT THE PRINCIPAL BALANCE OF
                        THE CLASS B CERTIFICATES HAS BEEN REDUCED TO ZERO.
                        See "Description of  the Certificates--Subordination  of
                        Class  M and  Class B  Certificates" in  this Prospectus
                        Supplement.
Effects of Prepayments
  on Investment
  Expectations........  The actual  rate  of  prepayment  of  principal  on  the
                        Mortgage  Loans  can  not be  predicted.  The investment
                        performance  of  the   Offered  Certificates  may   vary
                        materially    and   adversely    from   the   investment
                        expectations of  investors  due to  prepayments  on  the
                        Mortgage Loans being higher or lower than anticipated by
                        investors.  The actual yield to the holder of an Offered
                        Certificate may not be equal to the yield anticipated at
                        the  time   of   purchase   of   the   Certificate   or,
                        notwithstanding  that the  actual yield is  equal to the
                        yield anticipated  at that  time,  the total  return  on
                        investment  expected  by  the investor  or  the expected
                        weighted average  life of  the  Certificate may  not  be
                        realized.   These  effects  are   summarized  below.  IN
                        DECIDING WHETHER TO  PURCHASE ANY OFFERED  CERTIFICATES,
                        AN  INVESTOR SHOULD  MAKE AN INDEPENDENT  DECISION AS TO
                        THE APPROPRIATE PREPAYMENT ASSUMPTIONS TO BE USED.
                        YIELD.  If an investor purchases an Offered  Certificate
                        at an amount equal to its unpaid principal balance (that
                        is,  at  "par"), the  effective  yield to  that investor
                        (assuming that  there  are no  interest  shortfalls  and
                        assuming  the  full return  of the  purchaser's invested
                        principal) will  approximate  the pass-through  rate  on
                        that  Certificate. If an investor pays less or more than
                        the unpaid principal  balance of  the Certificate  (that
                        is,  buys the Certificate at  a "discount" or "premium,"
                        respectively), then, based on the assumptions set  forth
                        in  the preceding  sentence, the effective  yield to the
                        investor will be higher or lower, respectively, than the
                        stated interest rate  on the  Certificate, because  such
                        discount  or premium will be  amortized over the life of
                        the Certificate.  Any deviation  in the  actual rate  of
                        prepayments  on the Mortgage Loans from the rate assumed
                        by the  investor will  affect the  period of  time  over
                        which,  or the  rate at  which, the  discount or premium
                        will be  amortized and,  consequently, will  change  the
                        investor's   actual  yield  from  that  anticipated.  AN
                        INVESTOR THAT PURCHASES  ANY OFFERED  CERTIFICATES AT  A
                        DISCOUNT  SHOULD  CAREFULLY  CONSIDER  THE  RISK  THAT A
                        SLOWER THAN ANTICIPATED  RATE OF  PRINCIPAL PAYMENTS  ON
                        THE  MORTGAGE LOANS WILL RESULT  IN AN ACTUAL YIELD THAT
                        IS  LOWER  THAN  SUCH  INVESTOR'S  EXPECTED  YIELD.   AN
                        INVESTOR  THAT  PURCHASES  ANY  OFFERED  CERTIFICATES AT
</TABLE>
 
                                      S-16
<PAGE>
 
<TABLE>
<S>                     <C>
                        A PREMIUM SHOULD  CONSIDER THE RISK  THAT A FASTER  THAN
                        ANTICIPATED  RATE OF PRINCIPAL  PAYMENTS ON THE MORTGAGE
                        LOANS WILL RESULT IN AN ACTUAL YIELD THAT IS LOWER  THAN
                        SUCH INVESTOR'S EXPECTED YIELD.
                        The   yields   on  the   Class   A-10  and   Class  A-12
                        Certificates, which  are expected  to  be offered  at  a
                        substantial   premium   over  their   initial  principal
                        balances, will  be  sensitive  to  both  the  timing  of
                        receipt   of  prepayments   and  the   overall  rate  of
                        prepayment  on  the  Mortgage   Loans.  The  yields   to
                        investors   in  the  Class  A-11  Certificates  will  be
                        sensitive and the Class A-12 Certificates will be highly
                        sensitive to the level of  LIBOR. A high level of  LIBOR
                        will  have a  material negative  effect on  the yield to
                        investors in the Class A-12 Certificates. The particular
                        sensitivities  of  the   Class  A-10   and  Class   A-12
                        Certificates  are  separately  displayed  in  the tables
                        appearing  under  the  heading  "Prepayment  and   Yield
                        Considerations" in this Prospectus Supplement. INVESTORS
                        IN  THE CLASS  A-10 AND  CLASS A-12  CERTIFICATES SHOULD
                        CONSIDER  THE  RISK  THAT  A  RAPID  RATE  OF  PRINCIPAL
                        PAYMENTS  ON THE MORTGAGE LOANS, AND  IN THE CASE OF THE
                        CLASS A-12  CERTIFICATES A  HIGH LEVEL  OF LIBOR,  COULD
                        RESULT IN THE FAILURE OF SUCH INVESTORS TO FULLY RECOVER
                        THEIR INITIAL INVESTMENTS.
                        REINVESTMENT RISK.  As stated above, if a Certificate is
                        purchased  at an  amount equal  to its  unpaid principal
                        balance, fluctuations in  the rate  of distributions  of
                        principal   will  generally  not  affect  the  yield  to
                        maturity of that Certificate. However, the total  return
                        on any purchaser's investment, including an investor who
                        purchases  at par,  will be  reduced to  the extent that
                        principal distributions received on its Certificate  can
                        not  be  reinvested  at a  rate  as high  as  the stated
                        interest rate  of  the  Certificate.  Investors  in  the
                        Offered Certificates should consider the risk that rapid
                        rates  of prepayments on the Mortgage Loans may coincide
                        with periods of  low prevailing  market interest  rates.
                        During  periods of low prevailing market interest rates,
                        mortgagors  may  be  expected  to  prepay  or  refinance
                        Mortgage  Loans that carry  interest rates significantly
                        higher than  then-current  interest rates  for  mortgage
                        loans.  Consequently, the amount  of principal distribu-
                        tions available to an investor for reinvestment at  such
                        low  prevailing interest rates  may be relatively large.
                        Conversely, slow rates  of prepayments  on the  Mortgage
                        Loans  may  coincide  with  periods  of  high prevailing
                        market interest rates. During  such periods, it is  less
                        likely that mortgagors will elect to prepay or refinance
                        Mortgage  Loans and, therefore,  the amount of principal
                        distributions available to an investor for  reinvestment
                        at such high prevailing interest rates may be relatively
                        small.
                        WEIGHTED AVERAGE LIFE VOLATILITY.  One indication of the
                        impact of varying prepayment speeds on a security is the
                        change  in  its  weighted  average  life.  The "weighted
                        average life" of an  Offered Certificate is the  average
                        amount  of  time that  will elapse  between the  date of
                        issuance of the  Certificate and the  date on which  the
                        last dollar in reduction of the principal balance of the
                        Certificate is distributed to the investor. Low rates of
                        prepayment  may result  in an extension  of the weighted
                        average life of a
</TABLE>
 
                                      S-17
<PAGE>
 
<TABLE>
<S>                     <C>
                        Certificate; high  rates,  in  the  shortening  of  such
                        weighted  average  life.  In  general,  if  the weighted
                        average life  of  a  Certificate  purchased  at  par  is
                        extended   beyond   that  initially   anticipated,  such
                        Certificate's market  value  may be  adversely  affected
                        even  though the yield to maturity on the Certificate is
                        unaffected. The weighted average lives of the Class A-16
                        and Class  A-17 Certificates,  to  the extent  of  their
                        Companion  Components, will be particularly sensitive to
                        prepayments on the Mortgage Loans at rates in excess  of
                        certain  constant rates of  prepayment, because payments
                        of principal allocated  to the Class  A Certificates  in
                        excess of such prepayment levels will be paid to holders
                        of the Class A-16 and Class A-17 Certificates in respect
                        of their Companion Components, rather than to holders of
                        the   PAC  Certificates   or  in  respect   of  the  PAC
                        Components, until the principal balances represented  by
                        such Companion Components have been reduced to zero. The
                        weighted  average  lives  of  the  Offered Certificates,
                        under various prepayment scenarios, are displayed in the
                        tables appearing under the heading "Prepayment and Yield
                        Considerations" in this Prospectus Supplement.
Federal Income Tax
  Status..............  For federal income tax  purposes, the Trust Estate  will
                        consist  of two real estate mortgage investment conduits
                        (the "Upper-Tier REMIC" and the "Lower-Tier REMIC"). The
                        Class A-1, Class A-2, Class  A-3, Class A-4, Class  A-5,
                        Class  A-6, Class A-7, Class A-8, Class A-9, Class A-10,
                        Class A-11, Class  A-12, Class A-13,  Class A-14,  Class
                        A-15,  Class A-16,  Class A-17,  Class A-18  and Class M
                        Certificates and each subclass  of the Class B  Certifi-
                        cates will be designated as the regular interests in the
                        Upper-Tier  REMIC,  and  the Class  A-R  and  Class A-LR
                        Certificates  will   be  designated   as  the   residual
                        interests  in the Upper-Tier REMIC and Lower-Tier REMIC,
                        respectively.
                        The Regular Certificates  (as defined herein)  generally
                        will  be treated as debt  instruments for federal income
                        tax  purposes.   Beneficial   owners  of   the   Regular
                        Certificates  will be required  to report income thereon
                        in accordance with the accrual method of accounting.  It
                        is  anticipated that the Class  A-5, Class A-6 and Class
                        A-8 Certificates  will  be issued  with  original  issue
                        discount in an amount equal to the excess of the initial
                        principal  balances thereof (plus three days of interest
                        at the  pass-through  rates thereon)  over  their  issue
                        prices   (including  accrued   interest).  It   is  also
                        anticipated that the  Class A-1, Class  A-2, Class  A-3,
                        Class A-13, Class A-14, Class A-16, Class A-17 and Class
                        M  Certificates will be issued at a premium and that the
                        Class A-4, Class  A-7, Class A-9,  Class A-11 and  Class
                        A-15 Certificates will not be issued with original issue
                        discount  for federal income  tax purposes. Although not
                        free from doubt, it is  anticipated that the Class  A-10
                        and  Class A-12 Certificates will  be issued with origi-
                        nal issue discount in an  amount equal to the excess  of
                        all distributions of principal and interest thereon over
                        their  issue prices (including accrued interest) and the
                        Seller intends  to  report  income in  respect  of  such
                        subclasses  of  Certificates in  this manner.  The Class
                        A-18 Certificates, which  are not  offered hereby,  will
                        also  be treated as issued  with original issue discount
                        for federal income tax purposes.
</TABLE>
 
                                      S-18
<PAGE>
<TABLE>
<S>                     <C>
                        The holders of the Class A-R and Class A-LR Certificates
                        will be required to include  the taxable income or  loss
                        of   the   Upper-Tier   REMIC   and   Lower-Tier  REMIC,
                        respectively,  in  determining  their  federal   taxable
                        income.  It  is anticipated  that  all or  a substantial
                        portion of the  taxable income of  the Upper-Tier  REMIC
                        and  Lower-Tier REMIC  includible by  the Class  A-R and
                        Class A-LR  Certificateholders,  respectively,  will  be
                        treated  as "excess inclusion" income subject to special
                        limitations for  federal income  tax purposes.  FURTHER,
                        SIGNIFICANT  RESTRICTIONS APPLY  TO THE  TRANSFER OF THE
                        CLASS A-R  AND CLASS  A-LR CERTIFICATES.  THE CLASS  A-R
                        CERTIFICATE WILL, AND THE CLASS A-LR CERTIFICATE MAY, BE
                        CONSIDERED  "NONECONOMIC  RESIDUAL  INTERESTS,"  CERTAIN
                        TRANSFERS OF WHICH  MAY BE DISREGARDED  FOR FEDERAL  IN-
                        COME TAX PURPOSES.
                        See  "Description  of the  Certificates--Restrictions on
                        Transfer of  the  Class  A-R, Class  A-LR  and  Class  M
                        Certificates" and "Federal Income Tax Considerations" in
                        this  Prospectus Supplement and  "Certain Federal Income
                        Tax Consequences--Federal  Income Tax  Consequences  for
                        REMIC Certificates" in the Prospectus.
ERISA
  Considerations......  A  fiduciary of any employee benefit plan subject to the
                        Employee Retirement  Income  Security Act  of  1974,  as
                        amended ("ERISA"), or the Internal Revenue Code of 1986,
                        as  amended (the  "Code"), should  carefully review with
                        its legal advisors  whether the purchase  or holding  of
                        Class  A or  Class M Certificates  could give  rise to a
                        transaction  prohibited  or  not  otherwise  permissible
                        under   ERISA  or   the  Code.   BECAUSE  THE   CLASS  M
                        CERTIFICATES   ARE   SUBORDINATED   TO   THE   CLASS   A
                        CERTIFICATES,  THE  CLASS  M  CERTIFICATES  MAY  NOT  BE
                        PURCHASED BY OR TRANSFERRED TO AN ERISA PLAN EXCEPT UPON
                        THE DELIVERY OF AN OPINION OF COUNSEL AS DESCRIBED UNDER
                        "ERISA CONSIDERATIONS"  IN THIS  PROSPECTUS  SUPPLEMENT.
                        NEITHER  THE CLASS  A-R CERTIFICATE  NOR THE  CLASS A-LR
                        CERTIFICATE MAY  BE PURCHASED  BY OR  TRANSFERRED TO  AN
                        ERISA   PLAN.   See  "ERISA   Considerations"   in  this
                        Prospectus Supplement and in the Prospectus.
Legal Investment......  The Offered  Certificates constitute  "mortgage  related
                        securities"  for  purposes  of  the  Secondary  Mortgage
                        Market Enhancement Act of 1984 so long as they are rated
                        in one of the two highest rating categories by at  least
                        one nationally recognized statistical rating
                        organization.  As  such,  the  Offered  Certificates are
                        legal investments  for certain  entities to  the  extent
                        provided  in  such  act. However,  there  are regulatory
                        requirements and considerations applicable to  regulated
                        financial  institutions and restrictions  on the ability
                        of such  institutions  to  invest in  certain  types  of
                        mortgage  related securities.  Prospective purchasers of
                        the Offered Certificates should consult their own legal,
                        tax  and   accounting   advisors  in   determining   the
                        suitability of and consequences to them of the purchase,
                        ownership  and disposition of  the Offered Certificates.
                        See "Legal Investment" in this Prospectus Supplement.
</TABLE>
 
                                      S-19
<PAGE>
                        DESCRIPTION OF THE CERTIFICATES
 
GENERAL
 
    The  Book-Entry Certificates will be issued  only in book-entry form, except
as described  below.  The Book-Entry  Certificates  will be  issued  in  minimum
denominations  of $100,000 initial  principal balance and  integral multiples of
$1,000 initial principal balance in excess thereof. Offered Certificates  issued
in  fully registered,  certificated form are  referred to  herein as "Definitive
Certificates."  The  Class  A-10  Certificates  will  be  issued  as  Definitive
Certificates  in minimum denominations of  $10,000 initial principal balance and
integral multiples of $1 initial principal balance in excess thereof. The  Class
A-11  and Class A-12  Certificates will be issued  as Definitive Certificates in
minimum  denominations  of  $100,000  initial  principal  balance  and  integral
multiples  of $1,000  initial principal balance  in excess thereof.  The Class M
Certificates will be issued as Definitive Certificates in minimum  denominations
of  $100,000 initial principal balance and  integral multiples of $1,000 initial
principal balance in excess thereof. The  Class A-R and Class A-LR  Certificates
will  each be issued as  a single Definitive Certificate  with a denomination of
$1,000 initial principal balance.
 
    Each Subclass of Book-Entry Certificates initially will be represented by  a
single  physical certificate registered in  the name of Cede  & Co. ("Cede"), as
nominee of  DTC, which  will  be the  "holder"  or "Certificateholder"  of  such
Certificates,  as such terms are used herein. No person acquiring an interest in
the Book-Entry Certificates (a "Beneficial Owner") will be entitled to receive a
certificate representing such person's interest in the Book-Entry  Certificates,
except  as set forth  below under "--Definitive  Certificates." Unless and until
Definitive Certificates  are issued  under the  limited circumstances  described
herein,  all references to actions taken by Certificateholders or holders shall,
in the case of the Book-Entry Certificates,  refer to actions taken by DTC  upon
instructions from its Participants (as defined below), and all references herein
to  distributions,  notices,  reports and  statements  to  Certificateholders or
holders  shall,  in  the   case  of  the   Book-Entry  Certificates,  refer   to
distributions, notices, reports and statements to DTC or Cede, as the registered
holder  of the Book-Entry Certificates, as the  case may be, for distribution to
Beneficial  Owners  in  accordance   with  DTC  procedures.  See   "--Book-Entry
Registration" below.
 
BOOK-ENTRY REGISTRATION
 
    DTC is a limited purpose trust company organized under the laws of the State
of  New York, a member  of the Federal Reserve  System, a "clearing corporation"
within the  meaning of  the New  York  UCC and  a "clearing  agency"  registered
pursuant  to Section 17A of the Securities Exchange Act of 1934, as amended. DTC
was  created   to   hold   securities  for   its   participating   organizations
("Participants")  and to facilitate  the clearance and  settlement of securities
transactions  among  Participants   through  electronic  book-entries,   thereby
eliminating the need for physical movement of certificates. Participants include
securities  brokers  and  dealers  (including  the  Underwriter),  banks,  trust
companies and clearing corporations. Indirect access  to the DTC system also  is
available  to banks,  brokers, dealers,  trust companies  and other institutions
that clear  through or  maintain a  custodial relationship  with a  Participant,
either directly or indirectly ("Indirect Participants").
 
    Under  the rules, regulations and procedures  creating and affecting DTC and
its operations (the "Rules"),  DTC is required to  make book-entry transfers  of
Book-Entry  Certificates among Participants on whose behalf it acts with respect
to the  Book-Entry Certificates  and to  receive and  transmit distributions  of
principal  of  and interest  on  the Book-Entry  Certificates.  Participants and
Indirect Participants with which Beneficial Owners have accounts with respect to
the Book-Entry Certificates similarly are required to make book-entry  transfers
and  receive and transmit such payments on behalf of their respective Beneficial
Owners.
 
    Beneficial Owners that  are not  Participants or  Indirect Participants  but
desire  to purchase, sell or otherwise transfer ownership of, or other interests
in, Book-Entry Certificates  may do  so only through  Participants and  Indirect
Participants.  In addition, Beneficial Owners  will receive all distributions of
principal and interest from  the Servicer, or  a paying agent  on behalf of  the
Servicer,  through DTC Participants. DTC will  forward such distributions to its
Participants, which thereafter will forward them to
 
                                      S-20
<PAGE>
Indirect Participants  or  Beneficial  Owners. Beneficial  Owners  will  not  be
recognized   by   the   Trustee,   the  Servicer   or   any   paying   agent  as
Certificateholders, as such term is used in the Pooling and Servicing Agreement,
and  Beneficial   Owners  will   be  permitted   to  exercise   the  rights   of
Certificateholders only indirectly through DTC and its Participants.
 
    Because  DTC can  only act  on behalf  of Participants,  who in  turn act on
behalf of Indirect Participants and certain  banks, the ability of a  Beneficial
Owner  to  pledge Book-Entry  Certificates to  persons or  entities that  do not
participate in  the  DTC  system, or  to  otherwise  act with  respect  to  such
Book-Entry  Certificates,  may  be  limited  due  to  the  lack  of  a  physical
certificate for such  Book-Entry Certificates. In  addition, under a  book-entry
format,  Beneficial Owners may  experience delays in  their receipt of payments,
since distributions will be made by the Servicer, or a paying agent on behalf of
the Servicer, to Cede, as nominee for DTC.
 
    DTC has advised  the Seller that  it will  take any action  permitted to  be
taken  by a Certificateholder under the  Pooling and Servicing Agreement only at
the direction  of  one or  more  Participants to  whose  accounts with  DTC  the
Book-Entry  Certificates are credited. Additionally,  DTC has advised the Seller
that it will take such actions  with respect to specified Voting Interests  only
at  the direction of and on behalf  of Participants whose holdings of Book-Entry
Certificates evidence such specified Voting Interests. DTC may take  conflicting
actions  with respect to Voting Interests  to the extent that Participants whose
holdings of  Book-Entry Certificates  evidence such  Voting Interests  authorize
divergent action.
 
    Neither   the  Seller,   the  Servicer  nor   the  Trustee   will  have  any
responsibility for any  aspect of the  records relating to  or payments made  on
account of beneficial ownership interests of the Book-Entry Certificates held by
Cede,  as  nominee for  DTC, or  for maintaining,  supervising or  reviewing any
records relating to such beneficial ownership interests.
 
DEFINITIVE CERTIFICATES
 
    The Class A-10, Class A-11,  Class A-12, Class A-R,  Class A-LR and Class  M
Certificates  will  be issued  as  Definitive Certificates.  Further, Book-Entry
Certificates will  be  converted to  Definitive  Certificates and  re-issued  to
Beneficial  Owners or their nominees, rather than to DTC or its nominee, only if
(i) the Servicer advises the Trustee in writing that DTC is no longer willing or
able to discharge properly  its responsibilities as  depository with respect  to
the  Book-Entry Certificates  and the Servicer  is unable to  locate a qualified
successor, (ii) the Servicer, at its option, elects to terminate the  book-entry
system  through DTC or (iii) after the  occurrence of a dismissal or resignation
of the Servicer  under the  Pooling and Servicing  Agreement, Beneficial  Owners
representing not less than 51% of the Voting Interests of each outstanding class
of  Book-Entry Certificates advise the Trustee through DTC, in writing, that the
continuation of a book-entry system through  DTC (or a successor thereto) is  no
longer in the Beneficial Owners' best interest.
 
    Upon  the occurrence  of any  event described  in the  immediately preceding
paragraph, the Trustee will be required to notify all Beneficial Owners  through
Participants  of the availability of  Definitive Certificates. Upon surrender by
DTC of the definitive certificates representing the Book-Entry Certificates  and
receipt  of  instructions  for  re-registration, the  Trustee  will  reissue the
Book-Entry  Certificates  as  Definitive  Certificates  to  Beneficial   Owners.
Distributions of principal of, and interest on, the Book-Entry Certificates will
thereafter be made by the Servicer, or a paying agent on behalf of the Servicer,
directly to holders of Definitive Certificates in accordance with the procedures
set forth in the Pooling and Servicing Agreement.
 
    Definitive Certificates will be transferable and exchangeable at the offices
of  the Trustee or the certificate registrar.  No service charge will be imposed
for any  registration of  transfer  or exchange,  but  the Trustee  may  require
payment  of  a sum  sufficient to  cover  any tax  or other  governmental charge
imposed in connection therewith.
 
DISTRIBUTIONS
 
    Distributions of interest and in  reduction of principal balance to  holders
of  Class A Certificates of each Subclass will be made monthly, to the extent of
each Subclass' entitlement thereto, on the 25th day
 
                                      S-21
<PAGE>
of each month or, if such day is not a business day, on the succeeding  business
day  (each, a "Distribution Date"), beginning in September 1992, in an aggregate
amount equal to the Class A  Distribution Amount. Distributions of interest  and
in  reduction of principal  balance to holders  of Class M  Certificates will be
made monthly, to the extent of the Class M Certificates' entitlement thereto, on
each Distribution Date in an aggregate amount equal to the Class M  Distribution
Amount after all amounts in respect of interest and principal due on the Class A
Certificates  for such Distribution Date including all previously unpaid Class A
Subclass Interest Shortfall  Amounts with  respect to  any Subclass  of Class  A
Certificates  have  been paid.  The "Determination  Date"  with respect  to each
Distribution Date will be the 17th  day of each month, or  if such day is not  a
business  day, the  preceding business day.  Distributions will be  made on each
Distribution Date to  holders of record  (which, in the  case of the  Book-Entry
Certificates,  will be Cede, as nominee for DTC) at the close of business on the
last day of the preceding month (each,  a "Record Date"), except that the  final
distribution  in respect of  each Class A  Certificate of any  Subclass and each
Class M Certificate will  only be made upon  presentation and surrender of  such
Class  A or Class M Certificate at the office or agency appointed by the Trustee
and specified in the notice of final distribution in respect of such Subclass of
Class A Certificates or Class M Certificate.
 
    The aggregate  amount available  for distribution  to Certificateholders  on
each  Distribution  Date  will  be  the  Pool  Distribution  Amount.  The  "Pool
Distribution Amount" for a Distribution Date  will be the sum of all  previously
undistributed  payments  or other  receipts on  account of  principal (including
principal prepayments and Liquidation Proceeds in respect of principal, if  any)
and  interest on or  in respect of  the Mortgage Loans  received by the Servicer
after the Cut-Off Date (except for amounts due on or prior to the Cut-Off Date),
or received by the Servicer  on or prior to the  Cut-Off Date but due after  the
Cut-Off  Date, in either case received on  or prior to the Determination Date in
the month in which such Distribution Date occurs, plus (i) all Periodic Advances
made by the Servicer, (ii) all withdrawals from any reserve fund established  to
provide  support for  the Servicer's obligation  to make  advances, as described
under "-- Periodic Advances"  below and (iii) all  other amounts required to  be
placed  in the Certificate Account  by the Servicer pursuant  to the Pooling and
Servicing Agreement, but excluding the following:
 
        (a)  amounts  received  as  late  payments  of  principal  or   interest
    respecting  which the Servicer previously has  made one or more unreimbursed
    Periodic Advances or an unreimbursed advance has been made from the  Reserve
    Fund, if established;
 
        (b) any unreimbursed Periodic Advances or unreimbursed advances from the
    Reserve Fund, if established, with respect to Liquidated Loans;
 
        (c)  those portions of each payment of interest on a particular Mortgage
    Loan which represent the applicable Servicing Fee, as adjusted in respect of
    Prepayment Interest Shortfalls as described under "--Interest" below;
 
        (d)  all  amounts  representing  scheduled  payments  of  principal  and
    interest  due  after the  Due  Date occurring  in  the month  in  which such
    Distribution Date occurs;
 
        (e) all principal prepayments in full  and all proceeds of any  Mortgage
    Loans,  or  property acquired  in  respect thereof,  liquidated, foreclosed,
    purchased or repurchased  pursuant to the  Pooling and Servicing  Agreement,
    received  on or  after the  Due Date  occurring in  the month  in which such
    Distribution Date occurs, and all partial principal prepayments received  by
    the  Servicer on or after  the Determination Date occurring  in the month in
    which such Distribution Date occurs, and all related payments of interest on
    such amounts;
 
         (f) to the  extent permitted  by the Pooling  and Servicing  Agreement,
    that portion of Liquidation Proceeds or insurance proceeds with respect to a
    Mortgage  Loan  which  represents  any unpaid  Servicing  Fee  to  which the
    Servicer is entitled;
 
        (g) all  amounts  representing  certain  expenses  reimbursable  to  the
    Servicer  and  other amounts  permitted to  be retained  by the  Servicer or
    withdrawn by  the Servicer  from  the Certificate  Account pursuant  to  the
    Pooling and Servicing Agreement;
 
                                      S-22
<PAGE>
        (h)  all amounts in the nature of late fees, assumption fees, prepayment
    fees and similar fees which the Servicer is entitled to retain as additional
    servicing compensation;
 
         (i) reinvestment  earnings  on  payments received  in  respect  of  the
    Mortgage Loans; and
 
         (j) Net Foreclosure Profits.
 
    On  each Distribution Date,  the Pool Distribution  Amount will be allocated
among the Classes  of Certificates  and distributed  to the  holders thereof  of
record  as of the related Record Date  as follows (the "Pool Distribution Amount
Allocation"):
 
        FIRST, to each Subclass of Class A Certificates, pro rata based on their
    respective Class A Subclass Interest Accrual Amounts, in an aggregate amount
    up to the sum of the Class A Subclass Interest Accrual Amounts with  respect
    to such Distribution Date;
 
        SECOND,  to each  Subclass of  Class A  Certificates, pro  rata based on
    their respective unpaid Class A  Subclass Interest Shortfall Amounts, in  an
    aggregate  amount up to  the sum of  the previously unpaid  Class A Subclass
    Interest Shortfall Amounts;
 
        THIRD, to each Subclass of Class A Certificates, in an aggregate  amount
    up  to  the  Class  A  Optimal Principal  Amount,  such  distribution  to be
    allocated among such Subclasses in accordance with the priorities set  forth
    below under "--Principal (Including Prepayments)--Allocation of Amount to be
    Distributed to the Class A and Class M Certificates;"
 
        FOURTH,  to the  Class M  Certificates in  an amount  up to  the Class M
    Interest Accrual Amount with respect to such Distribution Date;
 
        FIFTH, to the  Class M Certificates  in an amount  up to the  previously
    unpaid Class M Interest Shortfall Amount;
 
        SIXTH,  to  the Class  M Certificates  in an  amount up  to the  Class M
    Optimal Principal Amount; and
 
        SEVENTH, sequentially to the Class B-1,  Class B-2, Class B-3 and  Class
    B-4  Certificates so that each subclass shall  receive first an amount up to
    its  Class  B  Subclass  Interest  Accrual  Amount  with  respect  to   such
    Distribution  Date, second  an amount up  to its  previously unpaid subclass
    interest shortfall amount  and then  an amount  up to  its subclass  optimal
    principal amount before any subclasses of Class B Certificates with a higher
    numerical  designation  receive  any  payments  in  respect  of  interest or
    principal.
 
    The "Class A Distribution Amount" for any Distribution Date will be equal to
the sum of the amounts distributed  in accordance with priorities FIRST  through
THIRD of the Pool Distribution Amount Allocation set forth above.
 
    The "Class M Distribution Amount" for any Distribution Date will be equal to
the  sum of the amounts distributed in accordance with priorities FOURTH through
SIXTH of the Pool Distribution Amount Allocation set forth above.
 
    The undivided percentage interest (the "Percentage Interest") represented by
any Class A Certificate of a Subclass or Class M Certificate in distributions to
such Subclass or Class will be equal to the percentage obtained by dividing  the
initial principal balance of such Certificate by the aggregate initial principal
balance of all Certificates of such Subclass or Class, as the case may be.
 
INTEREST
 
    Interest  will accrue on  each Subclass of Class  A Certificates, other than
the Class A-11  and Class  A-12 Certificates, at  their respective  Pass-Through
Rates during each one-month period ending on the last day of the month preceding
the  month in  which each  Distribution Date  occurs (each,  a "Regular Interest
Accrual Period"). The Initial Regular  Interest Accrual Period will commence  on
August  1, 1992. Interest which accrues on such Subclasses will be calculated on
the assumption that distributions in reduction of the principal balance  thereof
on   a  Distribution  Date  are   made  on  the  first   day  of  the  month  of
 
                                      S-23
<PAGE>
such Distribution Date. Interest  will accrue on the  Class A-11 and Class  A-12
Certificates  at the applicable  Pass-Through Rates described  below during each
one-month period commencing on the 25th day of each month and ending on the 24th
day of the following month (each, a "LIBOR Based Interest Accrual Period").  The
Initial  LIBOR Based Interest  Accrual Period will commence  on August 25, 1992.
Interest on each  Subclass of  Class A Certificates  will be  calculated on  the
basis of a 360-day year consisting of twelve 30-day months.
 
    The  amount  of interest  which  will accrue  on  each Subclass  of  Class A
Certificates during each Regular Interest Accrual Period or, in the case of  the
Class  A-11  and  Class A-12  Certificates,  each LIBOR  Based  Interest Accrual
Period, is referred to herein as the "Class A Subclass Interest Accrual  Amount"
for  such  Subclass.  The Class  A  Subclass  Interest Accrual  Amount  for each
Subclass of  Offered Certificates,  other than  the Class  A-10 and  Class  A-LR
Certificates,  will equal the product of (i) 1/12th of the Pass-Through Rate for
such Subclass and  (ii) the outstanding  Class A Subclass  Principal Balance  of
such  Subclass. The  Pass-Through Rate  for each  such Subclass,  other than the
Class A-11 and Class A-12 Certificates, is the percentage set forth on the cover
of this Prospectus  Supplement. The Pass-Through  Rates for the  Class A-11  and
Class  A-12  Certificates  will  be  determined as  described  in  the  next two
paragraphs. The Class  A Subclass  Interest Accrual  Amount for  the Class  A-10
Certificates  will equal the sum  of (i) the product of  1/12th of 1.00% and the
Class A  Subclass Principal  Balance of  the Class  A-2 Certificates,  (ii)  the
product  of 1/12th of  0.35% and the  Class A Subclass  Principal Balance of the
Class A-7 Certificates, (iii)  the product of  1/12th of 0.50%  and the Class  A
Subclass Principal Balance of the Class A-8 Certificates and (iv) the product of
1/12th  of 7.50% and  the Class A  Subclass Principal Balance  of the Class A-10
Certificates. The Class A  Subclass Interest Accrual Amount  for the Class  A-LR
Certificate  will equal the  product of (i)  1/12th of 7.50%  and (ii) the Class
A-LR Notional Amount. The Class A Subclass Interest Accrual Amount for the Class
A-18 Certificates  will equal  the product  of (i)  1/12th of  (a) the  weighted
average  of the Net Mortgage  Interest Rates (as defined  below) of the Mortgage
Loans as of the first day of such month minus (b) 7.50% and (ii) the Class  A-18
Notional  Amount. Each Class A Subclass  Interest Accrual Amount will be reduced
by the portion  of (i) any  Non-Supported Interest Shortfall  allocable to  such
Subclass  and (ii) the interest portion  of Excess Special Hazard Losses, Excess
Fraud Losses and Excess Bankruptcy Losses allocable to such Subclass.
 
    During the Initial  LIBOR Based  Interest Accrual  Period, the  Pass-Through
Rate  for the  Class A-11  Certificates will  be 4.025%  per annum.  During each
subsequent LIBOR Based Interest  Accrual Period, the  Pass-Through Rate for  the
Class  A-11 Certificates will  be a per  annum rate, determinated  on the second
business day preceding  the commencement  of such LIBOR  Based Interest  Accrual
Period  (each, a "Rate  Determination Date"), equal  to the lesser  of (i) 0.65%
plus the arithmetic  mean of the  London interbank offered  rate quotations  for
one-month  Eurodollar deposits  ("LIBOR") prevailing on  such Rate Determination
Date, determined as described  below under "--Determination  of LIBOR" and  (ii)
approximately 10.00%.
 
    During  the Initial  LIBOR Based  Interest Accrual  Period, the Pass-Through
Rate for the Class A-12 Certificates will be 1190.08246% per annum. During  each
subsequent  LIBOR Based Interest  Accrual Period, the  Pass-Through Rate for the
Class A-12 Certificates will be a per  annum rate, subject to a minimum rate  of
0%  and a maximum rate of 1862.322286%, equal to (i) 1862.322286% minus (ii) the
product  of  199.1821705  and  LIBOR,  as  determined  on  the  applicable  Rate
Determination  Date. As a result of this calculation, increasing levels of LIBOR
will produce  a  reduced  Pass-Through  Rate for  the  Class  A-12  Certificates
(subject  to the minimum rate), while decreasing levels of LIBOR will produce an
increased Pass-Through Rate (subject to the maximum rate).
 
    The yield  to  investors in  the  Class  A-11 Certificates  and  Class  A-12
Certificates  will be  affected by  changes in LIBOR.  Levels of  LIBOR may have
little or no correlation to levels  of prevailing mortgage loan interest  rates.
It  is possible that lower prevailing  mortgage loan interest rates (which might
be expected to result  in faster prepayments) could  occur concurrently with  an
increased  level of  LIBOR. Conversely,  it is  possible that  higher prevailing
mortgage loan  interest rates  (which  might be  expected  to result  in  slower
prepayments)  could  occur concurrently  with a  decreased  level of  LIBOR. See
"Prepayment and Yield Considerations" herein and in the Prospectus.
 
                                      S-24
<PAGE>
    The amount of interest which will accrue on the Class M Certificates  during
each  month is referred to herein as  the "Class M Interest Accrual Amount." The
Class M Interest Accrual Amount  will equal the product  of (i) 1/12th of  7.50%
and (ii) the outstanding Class M Principal Balance. The Class M Interest Accrual
Amount  will  be  reduced  by  (i) the  portion  of  any  Non-Supported Interest
Shortfall allocable to the Class M Certificates and (ii) the interest portion of
Excess Special Hazard Losses, Excess  Fraud Losses and Excess Bankruptcy  Losses
allocable to the Class M Certificates.
 
    Each subclass of Class B Certificates will accrue interest during each month
at  a Pass-Through Rate  of 7.50% per  annum. The amount  of interest accrued on
each subclass during each month (the "Class B Subclass Interest Accrual Amount")
will equal the product of (i) 1/12th  of 7.50% and (ii) the outstanding Class  B
Subclass  Principal Balance  of such  subclass. Each  Class B  Subclass Interest
Accrual Amount will be reduced by (i) the portion of any Non-Supported  Interest
Shortfalls  allocable to such  subclass and (ii) the  interest portion of Excess
Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess  Bankruptcy  Losses
allocable to such subclass as described below.
 
    The  "Class  A  Subclass  Principal  Balance"  of  a  Subclass  of  Class  A
Certificates as of any Determination Date will be the principal balance of  such
Subclass  on the date of  initial issuance of the  Class A Certificates less (i)
all amounts previously distributed to  holders of Certificates of such  Subclass
in  reduction of the principal balance of  such Subclass and (ii) such Subclass'
pro rata share of the principal portion of Excess Special Hazard Losses,  Excess
Fraud Losses and Excess Bankruptcy Losses previously allocated to the holders of
Class  A Certificates in  the manner described  herein under "--Subordination of
Class M and Class  B Certificates--Allocation of  Losses." After the  Cross-Over
Date,  the Class A  Subclass Principal Balance  of a Subclass  may be subject to
further reduction in an  amount equal to  such Subclass' pro  rata share of  the
difference,  if  any, between  (a)  the Class  A  Principal Balance  as  of such
Determination Date without regard  to this provision and  (b) the Adjusted  Pool
Amount  for the preceding  Distribution Date. Any pro  rata allocation among the
Subclasses of Class  A Certificates  described in  this paragraph  will be  made
among  the  Subclasses of  Class  A Certificates  on  the basis  of  their then-
outstanding Class  A  Subclass  Principal  Balances  immediately  prior  to  the
applicable Distribution Date.
 
    The  "Class A Principal Balance" as of  any Determination Date will be equal
to the sum of the Class A Subclass Principal Balances of the Subclasses of Class
A Certificates as of such date.
 
    The "Class M  Principal Balance" as  of any Determination  Date will be  the
lesser  of (a) the principal balance of the  Class M Certificates on the date of
initial issuance of  the Class M  Certificates less (i)  all amounts  previously
distributed  to holders  of Class M  Certificates in reduction  of the principal
balance thereof and (ii) the principal portion of Excess Special Hazard  Losses,
Excess  Fraud Losses  and Excess Bankruptcy  Losses previously  allocated to the
holders of  the  Class M  Certificates  in  the manner  described  herein  under
"--Subordination  of Class M and Class B Certificates--Allocation of Losses" and
(b) the Adjusted  Pool Amount  as of the  preceding Distribution  Date less  the
Class A Principal Balance as of such Determination Date.
 
    The  "Class  B  Subclass  Principal  Balance"  of  a  subclass  of  Class  B
Certificates as of any Determination Date will be the lesser of (a) the  initial
principal  balance of such subclass on the date of initial issuance of the Class
B Certificates less (i)  all amounts previously distributed  to holders of  such
subclass  in reduction of  the principal balance thereof  and (ii) the principal
portion of  Excess  Special  Hazard  Losses,  Excess  Fraud  Losses  and  Excess
Bankruptcy  Losses previously allocated  to the holders of  such subclass in the
manner described under "--Subordination  of Class M  and Class B  Certificates--
Allocation  of Losses"  and (b)  the Adjusted  Pool Amount  as of  the preceding
Distribution Date less the  sum of the  Class A Principal  Balance, the Class  M
Principal  Balance and the Class B Subclass Principal Balances of the subclasses
of Class B Certificates with lower numerical designations.
 
    The "Class B Principal Balance" as of any  date will be equal to the sum  of
the Class B Subclass Principal Balance of the subclasses of Class B Certificates
as of such date.
 
    With respect to any Distribution Date, the "Adjusted Pool Amount" will equal
the Cut-Off Date Aggregate Principal Balance of the Mortgage Loans minus the sum
of (i) all amounts in respect of
 
                                      S-25
<PAGE>
principal  received in respect of the Mortgage Loans (including amounts received
as Periodic Advances, principal prepayments and Liquidation Proceeds in  respect
of  principal) and distributed to holders  of the Series 1992-26 Certificates on
such Distribution Date and all prior  Distribution Dates and (ii) the  principal
portion  of all Realized Losses incurred on  the Mortgage Loans from the Cut-Off
Date through the end of the month preceding such Distribution Date.
 
    The "Net Mortgage Interest Rate" on each Mortgage Loan will be equal to  the
Mortgage  Interest Rate on such Mortgage Loan  as stated in the related mortgage
note minus the Servicing Fee rate of 0.20% per annum. See "Pooling and Servicing
Agreement--Servicing Compensation and Payment of Expenses" herein.
 
    The "Class A-18 Notional Amount" with respect to each Distribution Date will
be equal to the Pool Scheduled Principal Balance, as defined under  "--Principal
(Including  Prepayments)" below,  as of such  Distribution Date.  The Class A-18
Notional  Amount  with  respect   to  the  first   Distribution  Date  will   be
approximately  $351,705,239 less  any partial principal  prepayments received in
August 1992.
 
    The "Class A-LR Notional Amount" with respect to each Distribution Date will
be equal to the sum of the Class A Subclass Principal Balance of the Class  A-LR
Certificate  and  the  Class A  Subclass  Principal  Balance of  the  Class A-18
Certificates.  The  Class  A-LR  Notional  Amount  with  respect  to  the  first
Distribution Date will be $2,000.
 
    Interest shortfalls resulting from principal prepayments in full of Mortgage
Loans  ("Prepayment Interest  Shortfalls") will be  offset to the  extent of the
aggregate Servicing  Fees relating  to mortgagor  payments or  other  recoveries
distributed  on the related Distribution Date.  To the extent that the aggregate
Prepayment Interest Shortfalls with  respect to a  Distribution Date exceed  the
aggregate  Servicing  Fees relating  to mortgagor  payments or  other recoveries
distributed on such  Distribution Date,  the resulting  interest shortfall  (the
"Non-Supported  Interest  Shortfall")  will  be allocated  to  (i)  the  Class A
Certificates  according  to  the  Class  A  Percentage  and  (ii)  the  Class  M
Certificates   according   to   the   percentage   obtained   by   dividing  the
then-outstanding Class M Principal  Balance by the  sum of the  then-outstanding
Class  A  Principal Balance,  Class M  Principal Balance  and Class  B Principal
Balance. Such allocation  of Non-Supported Interest  Shortfalls will reduce  the
amount  of interest due to be distributed to holders of the Class A Certificates
and Class  M  Certificates,  respectively, then  entitled  to  distributions  in
respect of interest. Any such reduction in respect of interest will be allocated
among  the Subclasses  of Class A  Certificates pro  rata on the  basis of their
respective Class A Subclass Interest Accrual Amounts for such Distribution Date.
See "Servicing of the Mortgage Loans--Adjustment to Servicing Fee in  Connection
with  Prepaid Mortgage Loans"  in the Prospectus.  Interest shortfalls resulting
from the timing of the receipt of partial principal prepayments on the  Mortgage
Loans  will not be offset by Servicing  Fees and will, on each Distribution Date
occurring prior to the Cross-Over Date, be allocated first to the subclasses  of
Class  B  Certificates  in reverse  numerical  order  and then  to  the  Class M
Certificates  before  being  borne  by   the  Class  A  Certificates.  On   each
Distribution  Date  occurring  on or  after  the Cross-Over  Date,  any interest
shortfalls resulting  from  the  timing  of the  receipt  of  partial  principal
prepayments  will be allocated to the Class A Certificates in the same manner as
Non-Supported Interest  Shortfalls are  allocated. See  "--Subordination of  the
Class M and Class B Certificates" below.
 
    The  interest  portion of  any Excess  Special  Hazard Losses,  Excess Fraud
Losses or Excess Bankruptcy Losses will be allocated among the Class A, Class  M
and  Class B Certificates  pro rata based  on the interest  accrued on each such
Class and among the Subclasses of Class A Certificates pro rata on the basis  of
their respective Class A Subclass Interest Accrual Amounts for such Distribution
Date.
 
    Allocations  of the interest  portion of Realized  Losses (other than Excess
Special Hazard Losses, Excess Fraud Losses or Excess Bankruptcy Losses) first to
the Class B Certificates and then to  the Class M Certificates will result  from
the  priority of distributions first to  the Class A Certificateholders and then
to the Class M Certificateholders of  the Pool Distribution Amount as  described
above under
"--Distributions."
 
                                      S-26
<PAGE>
    On  each Distribution Date  on which the Pool  Distribution Amount equals or
exceeds the sum of the Class A Subclass Interest Accrual Amounts,  distributions
in  respect of interest to each Subclass of Class A Certificates will equal such
Subclass' Class A Subclass Interest Accrual Amount.
 
    If, on any Distribution Date, the Pool Distribution Amount is less than  the
sum  of the Class  A Subclass Interest  Accrual Amounts, the  amount of interest
currently  distributed  on  the  Class  A  Certificates  will  equal  the   Pool
Distribution  Amount  and will  be  allocated among  the  Subclasses of  Class A
Certificates pro rata in  accordance with each such  Subclass' Class A  Subclass
Interest  Accrual Amount. Amounts so allocated will be distributed in respect of
interest to each Subclass  of Class A Certificates.  Any difference between  the
portion  of  the  Pool Distribution  Amount  distributed in  respect  of current
interest to  each Subclass  of Class  A Certificates  and the  Class A  Subclass
Interest   Accrual  Amount  for  such  Subclass  with  respect  to  the  related
Distribution Date (as to each Subclass, the "Class A Subclass Interest Shortfall
Amount")  will  be  added  to  the  amount  to  be  distributed  on   subsequent
Distribution Dates to the extent that the Pool Distribution Amount is sufficient
therefor.  No  interest will  accrue  on the  unpaid  Class A  Subclass Interest
Shortfall Amounts.
 
    On each Distribution Date on which the Pool Distribution Amount exceeds  the
sum  of the Class A  Subclass Interest Accrual Amounts,  any excess will then be
allocated first to  pay previously  unpaid Class A  Subclass Interest  Shortfall
Amounts.  Such  amounts  will  be  allocated among  the  Subclasses  of  Class A
Certificates pro rata in accordance with the respective unpaid Class A  Subclass
Interest Shortfall Amounts immediately prior to such Distribution Date.
 
    On  each Distribution Date  on which the Pool  Distribution Amount equals or
exceeds the sum  of (i) the  Class A Distribution  Amount and (ii)  the Class  M
Interest  Accrual Amount,  distributions in respect  of current  interest to the
Class M Certificates will equal the Class M Interest Accrual Amount.
 
    If, on any Distribution Date, the Pool Distribution Amount is less than  the
sum of (i) the Class A Distribution Amount and (ii) the Class M Interest Accrual
Amount,  the amount of current interest  distributed on the Class M Certificates
will equal the  Pool Distribution Amount  minus the amounts  distributed to  the
Class  A Certificates  with respect  to such  Distribution Date.  Any difference
between the portion of  the Pool Distribution Amount  distributed in respect  of
current  interest to the Class  M Certificates and the  Class M Interest Accrual
Amount with respect to such Distribution  Date (the "Class M Interest  Shortfall
Amount"),  will  be  added  to  the  amount  to  be  distributed  on  subsequent
Distribution Dates to the extent that the Pool Distribution Amount is sufficient
therefor. No  interest will  accrue on  the unpaid  Class M  Interest  Shortfall
Amount.
 
    On  each Distribution Date on which the Pool Distribution Amount exceeds the
sum of the Class A Distribution Amount and the Class M Interest Accrual  Amount,
any  excess will be  allocated first to  pay previously unpaid  Class M Interest
Shortfall Amounts and then to make distributions in respect of principal on  the
Class  M  Certificates and  in respect  of  interest and  then principal  on the
subclasses of Class B Certificates.
 
    On any Distribution Date on which the Pool Distribution Amount is less  than
the  Class A Distribution Amount, the Class M Certificates and the subclasses of
Class B Certificates will  not be entitled to  any distributions of interest  or
principal.
 
DETERMINATION OF LIBOR
 
    On  each Rate Determination  Date, the Trustee will  determine LIBOR for the
next succeeding LIBOR Based Interest Accrual Period on the basis of the  offered
LIBOR  quotations of the Reference Banks  (as defined below), as such quotations
are provided  to  the Trustee  as  of 11:00  a.m.  (London time)  on  such  Rate
Determination  Date. As used  herein with respect to  a Rate Determination Date,
"business day"  means a  day on  which banks  are open  for dealing  in  foreign
currency  and exchange in London and New York City; "Reference Banks" means four
leading  banks  engaged   in  transactions   in  Eurodollar   deposits  in   the
International  Eurocurrency market (i) with an  established place of business in
London, (ii) whose quotations appear on the Reuters Screen LIBO Page on the Rate
Determination Date in question and (iii)  which have been designated as such  by
the Trustee and are able and willing to provide such
 
                                      S-27
<PAGE>
quotations  to the Trustee on each  Rate Determination Date; and "Reuters Screen
LIBO Page" means the  display designated as page  "LIBO" on the Reuters  Monitor
Money  Rates Service (or  such other page as  may replace the  LIBO page on that
service for the purpose of  displaying London interbank offered rate  quotations
of major banks). If any Reference Bank should be removed from the Reuters Screen
LIBO  Page or in any  other way fails to meet  the qualifications of a Reference
Bank, the  Trustee  may,  in  its  sole  discretion,  designate  an  alternative
Reference Bank.
 
    On  each Rate Determination Date, LIBOR  for the next succeeding LIBOR Based
Interest Accrual Period will be established by the Trustee as follows:
 
         (i) If on  any Rate  Determination Date two  or more  of the  Reference
    Banks  provide  such  offered quotations,  LIBOR  for the  next  LIBOR Based
    Interest Accrual  Period  will  be  the  arithmetic  mean  of  such  offered
    quotations  (rounding  such  arithmetic  mean upwards  if  necessary  to the
    nearest whole multiple of 1/16%).
 
        (ii) If on any Rate Determination Date only one or none of the Reference
    Banks provides  such offered  quotations,  LIBOR for  the next  LIBOR  Based
    Interest Accrual Period will be the higher of (x) LIBOR as determined on the
    previous  Rate  Determination Date  or (y)  the  Reserve Interest  Rate. The
    "Reserve Interest  Rate"  will be  the  rate  per annum  which  the  Trustee
    determines  to be either  (A) the arithmetic  mean (rounding such arithmetic
    mean upwards if  necessary to the  nearest whole multiple  of 1/16%) of  the
    one-month  Eurodollar lending rates that New York City banks selected by the
    Trustee are  quoting,  on  the  relevant Rate  Determination  Date,  to  the
    principal  London  offices  of at  least  two  leading banks  in  the London
    interbank market or (B) in the event that the Trustee can determine no  such
    arithmetic  mean, the lowest one-month Eurodollar  lending rate that the New
    York  City  banks  selected  by  the  Trustee  are  quoting  on  such   Rate
    Determination Date to leading European banks.
 
        (iii)  If on any Rate Determination Date  the Trustee is required but is
    unable to determine  the Reserve  Interest Rate  in the  manner provided  in
    paragraph (ii) above, LIBOR for the next LIBOR Based Interest Accrual Period
    will  be LIBOR as determined on the previous Rate Determination Date, or, in
    the case of the first Rate Determination Date, 3.375%.
 
    The establishment  of LIBOR  by  the Trustee  and the  Trustee's  subsequent
calculation of the rates of interest applicable to the Class A-11 and Class A-12
Certificates  for  the  relevant LIBOR  Based  Interest Accrual  Period,  in the
absence of manifest error, will be final and binding. The Pass-Through Rates  on
the  Class A-11 and Class A-12 Certificates for any LIBOR Based Interest Accrual
Period may be obtained by telephoning the Trustee at (612) 223-7900.
 
PRINCIPAL (INCLUDING PREPAYMENTS)
 
    The principal balance of  a Class A  Certificate of any  Subclass or of  any
Class  M Certificate at any time is equal to the product of the Class A Subclass
Principal Balance of such Subclass or the Class M Principal Balance, as the case
may be, and such Certificate's  Percentage Interest, and represents the  maximum
specified  dollar amount (exclusive of (i) any  interest that may accrue on such
Class A Certificate or Class M Certificate and (ii) in the case of the Class A-R
and Class A-LR Certificates, any additional  amounts to which the holder of  the
Class  A-R or Class  A-LR Certificate may  be entitled as  described below under
"--Additional Rights of  the Class  A-R and Class  A-LR Certificateholders")  to
which the holder thereof is entitled from the cash flow on the Mortgage Loans at
such  time, and will decline to the  extent of distributions in reduction of the
principal balance  of,  and allocations  of  losses to,  such  Certificate.  The
approximate initial Class A Subclass Principal Balance of each Subclass of Class
A  Certificates (other  than the  Class A-18  Certificates) and  the approximate
initial Class M Principal Balance are set forth on the cover of this  Prospectus
Supplement.  The initial  Class A Subclass  Principal Balance of  the Class A-18
Certificates is $1,000.
 
                                      S-28
<PAGE>
  CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A CERTIFICATES
 
    Distributions  in  reduction  of  the  principal  balance  of  the  Class  A
Certificates  will be made on each Distribution Date, pursuant to priority THIRD
of the Pool Distribution Amount Allocation, in an aggregate amount (the "Class A
Principal Distribution Amount") up to the Class A Optimal Principal Amount.
 
    The "Class A  Optimal Principal  Amount" with respect  to each  Distribution
Date will be an amount equal to the sum of (i) the Class A Percentage of (A) all
scheduled payments of principal due on each outstanding Mortgage Loan (including
each  defaulted Mortgage  Loan, other  than a  Liquidated Loan,  with respect to
which the related Mortgaged Property has  been acquired by the Trust Estate)  on
the  first day of the  month in which the Distribution  Date occurs, less (B) if
the Bankruptcy Coverage Termination Date has occurred, the principal portion  of
Debt Service Reductions, (ii) the Class A Prepayment Percentage of the Scheduled
Principal  Balance of each  Mortgage Loan which, during  the month preceding the
month of such  Distribution Date  was repurchased  by the  Seller, as  described
under  the heading "The Trust Estates--Mortgage  Loans" in the Prospectus, (iii)
the Class A Prepayment Percentage of  the aggregate net Liquidation Proceeds  on
all  Mortgage Loans  that became  Liquidated Loans  during such  preceding month
(excluding the portion thereof, if any, constituting Net Foreclosure Profits  as
defined   under  "--Additional   Rights  of  the   Class  A-R   and  Class  A-LR
Certificateholders" below),  less  the amounts  allocable  to principal  of  any
unreimbursed   Periodic  Advances  previously  made  by  the  Servicer  and  any
unreimbursed advances from  the Reserve  Fund (if established)  with respect  to
such  Liquidated Loans and the portion of the net Liquidation Proceeds allocable
to interest, (iv) the Class  A Prepayment Percentage of  an amount equal to  the
principal  portion of Realized Losses (other  than Bankruptcy Losses due to Debt
Service Reductions) incurred in such  preceding month other than Excess  Special
Hazard Losses, Excess Fraud Losses and Excess Bankruptcy Losses, (v) the Class A
Prepayment  Percentage of the Scheduled Principal  Balance of each Mortgage Loan
which was  the  subject of  a  principal prepayment  in  full during  the  month
preceding  the  month of  such Distribution  Date, (vi)  the Class  A Prepayment
Percentage of all partial principal prepayments  received by the Servicer on  or
after the Determination Date occurring in the month preceding the month in which
such  Distribution Date occurs and prior  to the Determination Date occurring in
the month  in  which  such  Distribution  Date occurs  and  (vii)  the  Class  A
Percentage  of  the  difference  between the  unpaid  principal  balance  of any
Mortgage Loan  substituted  for  a  defective Mortgage  Loan  during  the  month
preceding  the  month in  which  such Distribution  Date  occurs and  the unpaid
principal balance of such defective Mortgage Loan, less the amounts allocable to
principal of any  unreimbursed Periodic Advances  and any unreimbursed  advances
from  the Reserve Fund (if established)  with respect to such defective Mortgage
Loan. See "The  Trust Estates--Mortgage Loans--Assignment  of Mortgage Loans  to
the  Trustee" in  the Prospectus. In  addition, in  the event that  there is any
recovery of  an  amount  in  respect of  principal  which  had  previously  been
allocated  as a Realized Loss to the  Class A Certificates, each Subclass of the
Class A Certificates then outstanding will be entitled to its pro rata share  of
such  recovery in  an amount  up to  the amount  by which  the Class  A Subclass
Principal Balance of  such Subclass  was reduced as  a result  of such  Realized
Loss.
 
    The  "Scheduled Principal Balance" of a Mortgage Loan as of any Distribution
Date is the unpaid principal balance of  such Mortgage Loan as specified in  the
amortization  schedule at  the time relating  thereto (before  any adjustment to
such schedule  by  reason  of  bankruptcy  (other  than  Deficient  Valuations),
moratorium  or similar waiver or  grace period) as of  the Due Date occurring in
the month preceding  the month  in which  such Distribution  Date occurs,  after
giving  effect to any  principal prepayments or  other unscheduled recoveries of
principal previously received, to any  partial principal prepayments applied  as
of  such Due Date, Deficient Valuations occurring  prior to such Due Date and to
the payment  of  principal  due  on  such Due  Date,  and  irrespective  of  any
delinquency in payment by the mortgagor.
 
    A  "Liquidated Loan" is a  defaulted Mortgage Loan as  to which the Servicer
has determined that all recoverable liquidation and insurance proceeds have been
received. A "Liquidated Loan Loss" on a Liquidated Loan is equal to the  excess,
if  any,  of (i)  the unpaid  principal  balance of  such Liquidated  Loan, plus
interest thereon  in  accordance  with  the amortization  schedule  at  the  Net
Mortgage Interest Rate
 
                                      S-29
<PAGE>
through  the last day of  the month in which  such Mortgage Loan was liquidated,
over (ii) net Liquidation  Proceeds. For purposes of  calculating the amount  of
any  Liquidated Loan Loss, all net  Liquidation Proceeds (after reimbursement to
the Servicer for any previously unreimbursed  advance) will be applied first  to
accrued  interest and  then to  the unpaid  principal balance  of the Liquidated
Loan. A "Special Hazard Loss" is a Liquidated Loan Loss occurring as a result of
a hazard not  insured against under  a standard hazard  insurance policy of  the
type  described in the Prospectus under "The  Trust Estates -- Mortgage Loans --
Insurance Policies". A  "Fraud Loss"  is a Liquidated  Loan Loss  incurred on  a
Liquidated  Loan as to which there was fraud in the origination of such Mortgage
Loan. A "Bankruptcy Loss" is a loss attributable to certain actions which may be
taken by a  bankruptcy court  in connection with  a Mortgage  Loan, including  a
reduction by a bankruptcy court of the principal balance of or the interest rate
on  a Mortgage Loan or an extension  of its maturity. A "Debt Service Reduction"
means a reduction in  the amount of monthly  payments due to certain  bankruptcy
proceedings,  but does  not include  any permanent  forgiveness of  principal. A
"Deficient Valuation" with  respect to a  Mortgage Loan means  a valuation by  a
court  of  the  Mortgaged  Property  in  an  amount  less  than  the outstanding
indebtedness under the Mortgage Loan or  any reduction in the amount of  monthly
payments  that results in a permanent  forgiveness of principal, which valuation
or reduction  results  from  a bankruptcy  proceeding.  Liquidated  Loan  Losses
(including  Special Hazard  Losses and Fraud  Losses) and  Bankruptcy Losses are
referred to herein as "Realized Losses."
 
    The "Class A Percentage"  for any Distribution Date  occurring prior to  the
Cross-Over  Date is the percentage (subject to rounding), which in no event will
exceed 100%, obtained by dividing the Class A Principal Balance as of such  date
(before  taking into account distributions in  reduction of principal balance on
such date) by the aggregate Scheduled  Principal Balances of all Mortgage  Loans
for such Distribution Date (the "Pool Scheduled Principal Balance"). The Class A
Percentage  for the  first Distribution Date  will be  approximately 94.50%. The
Class A  Percentage will  decrease as  a  result of  the allocation  of  certain
unscheduled  payments  in  respect  of  principal  at  the  Class  A  Prepayment
Percentage for a specified period to the Class A Certificates and will  increase
as  a result of the allocation of Realized Losses to the Class B and the Class M
Certificates. The Class A Percentage for each Distribution Date occurring on  or
after the Cross-Over Date will be 100%.
 
    The  "Class  A Prepayment  Percentage" for  any Distribution  Date occurring
during the five years beginning on  the first Distribution Date will, except  as
provided  below, equal 100%. Thereafter, the  Class A Prepayment Percentage will
be subject to gradual  reduction as described in  the following paragraph.  This
disproportionate  allocation  of  certain  unscheduled  payments  in  respect of
principal will have the effect of  accelerating the amortization of the Class  A
Certificates while, in the absence of Realized Losses, increasing the respective
interest in the principal balance of the Mortgage Loans evidenced by the Class M
and  Class B Certificates. Increasing the respective interest of the Class M and
Class B Certificates relative to that of the Class A Certificates is intended to
preserve the availability of the subordination provided by the Class M and Class
B Certificates. See "--Subordination of Class M and Class B Certificates" below.
 
    The Class A Prepayment Percentage for any Distribution Date occurring on  or
after  the fifth anniversary of the first  Distribution Date will be as follows:
for any  Distribution  Date subsequent  to  August  1997 to  and  including  the
Distribution  Date in August 1998, the  Class A Percentage for such Distribution
Date plus 70% of the Subordinated Percentage for such Distribution Date; for any
Distribution Date subsequent to  August 1998 to  and including the  Distribution
Date  in August 1999, the Class A Percentage for such Distribution Date plus 60%
of the Subordinated Percentage for such Distribution Date; for any  Distribution
Date  subsequent to August 1999 to and including the Distribution Date in August
2000, the  Class  A  Percentage for  such  Distribution  Date plus  40%  of  the
Subordinated  Percentage for such  Distribution Date; for  any Distribution Date
subsequent to August 2000 to and including the Distribution Date in August 2001,
the Class A Percentage for such  Distribution Date plus 20% of the  Subordinated
Percentage for such Distribution Date; and for any Distribution Date thereafter,
the  Class  A  Percentage for  such  Distribution  Date (unless  on  any  of the
foregoing Distribution Dates the Class A Percentage exceeds the initial Class  A
Percentage,   in  which  case  the  Class   A  Prepayment  Percentage  for  such
 
                                      S-30
<PAGE>
Distribution Date  will  once  again  equal 100%).  See  "Prepayment  and  Yield
Considerations"  herein and in the Prospectus. Notwithstanding the foregoing, no
reduction of the Class A Prepayment Percentage will occur if (i) as of the first
Distribution Date as to which any  such reduction applies, more than an  average
of  2% of the dollar amount of all monthly payments on the Mortgage Loans due in
each of the preceding twelve months  were delinquent 60 days or more  (including
for  this  purpose any  Mortgage Loans  in foreclosure  and Mortgage  Loans with
respect to which the related Mortgaged  Property has been acquired by the  Trust
Estate),  or (ii) cumulative Realized Losses  with respect to the Mortgage Loans
exceed (a) with respect to the Distribution  Date in September 1997, 30% of  the
principal  balance of the Subordinated Certificates  as of the Cut-Off Date (the
"Original Subordinated Principal Balance"), (b) with respect to the Distribution
Date in September 1998, 35% of the Original Subordinated Principal Balance,  (c)
with  respect to the  Distribution Date in  September 1999, 40%  of the Original
Subordinated Principal Balance,  (d) with  respect to the  Distribution Date  in
September 2000, 45% of the Original Subordinated Principal Balance, and (e) with
respect  to  the  Distribution  Date  in September  2001,  50%  of  the Original
Subordinated  Principal   Balance.  The   "Subordinated  Percentage"   for   any
Distribution  Date will  be calculated  as the  difference between  100% and the
Class A Percentage for such  date. The "Subordinated Prepayment Percentage"  for
any  Distribution Date will be calculated as the difference between 100% and the
Class A Prepayment  Percentage for such  date. If on  any Distribution Date  the
allocation to the Class A Certificates of full and partial principal prepayments
and  other amounts in the percentage required above would reduce the outstanding
Class A Principal Balance below zero, the Class A Prepayment Percentage for such
Distribution Date will  be limited  to the  percentage necessary  to reduce  the
Class    A   Principal    Balance   to    zero.   See    "Description   of   the
Certificates--Distributions to Percentage Certificateholders--Shifting  Interest
Certificates" in the Prospectus.
 
  CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS M CERTIFICATES
 
    Distributions  in  reduction  of  the  principal  balance  of  the  Class  M
Certificates will be made on each Distribution Date, pursuant to priority  SIXTH
of the Pool Distribution Amount Allocation, in an aggregate amount (the "Class M
Principal Distribution Amount"), up to the Class M Optimal Principal Amount.
 
    The  "Class M  Optimal Principal Amount"  with respect  to each Distribution
Date will be an amount equal to the sum of (i) the Class M Percentage of (A) all
scheduled payments of principal due on each outstanding Mortgage Loan (including
each defaulted Mortgage  Loan, other  than a  Liquidated Loan,  with respect  to
which  the related Mortgaged Property has been  acquired by the Trust Estate) on
the first day of the  month in which the Distribution  Date occurs, less (B)  if
the  Bankruptcy Coverage Termination Date has occurred, the principal portion of
Debt Service Reductions, (ii) the Class M Prepayment Percentage of the Scheduled
Principal Balance of each  Mortgage Loan which, during  the month preceding  the
month  of such  Distribution Date  was repurchased  by the  Seller, as described
under the heading "The Trust  Estates--Mortgage Loans" in the Prospectus,  (iii)
the  Class M Prepayment Percentage of  the aggregate net Liquidation Proceeds on
all Mortgage  Loans that  became Liquidated  Loans during  such preceding  month
(excluding  the portion thereof, if  any, constituting Net Foreclosure Profits),
less the amounts allocable  to principal of  any unreimbursed Periodic  Advances
previously  made by the Servicer and  any unreimbursed advances from the Reserve
Fund (if established) with respect to  such Liquidated Loans and the portion  of
the  net Liquidation Proceeds  allocable to Interest,  (iv) on each Distribution
Date prior to the reduction of the Class B Principal Balance to zero, the  Class
M  Prepayment Percentage of an amount equal to the principal portion of Realized
Losses (other than Bankruptcy Losses due to Debt Service Reductions) incurred in
such preceding  month other  than  Excess Special  Hazard Losses,  Excess  Fraud
Losses  and Excess Bankruptcy  Losses, (v) the Class  M Prepayment Percentage of
the Scheduled Principal Balance of each Mortgage Loan which was the subject of a
principal prepayment  in full  during  the month  preceding  the month  of  such
Distribution  Date,  (vi)  the  Class M  Prepayment  Percentage  of  all partial
principal prepayments received  by the  Servicer on or  after the  Determination
Date  occurring in the month preceding the month in which such Distribution Date
occurs and prior to the Determination Date occurring in the month in which  such
Distribution  Date occurs  and (vii)  the Class  M Percentage  of the difference
between the unpaid  principal balance  of any  Mortgage Loan  substituted for  a
defective   Mortgage   Loan   during   the   month   preceding   the   month  in
 
                                      S-31
<PAGE>
which such Distribution  Date occurs and  the unpaid principal  balance of  such
defective  Mortgage  Loan,  less  the  amounts  allocable  to  principal  of any
unreimbursed Periodic Advances  and any unreimbursed  advances from the  Reserve
Fund  (if established)  with respect to  such defective Mortgage  Loan. See "The
Trust Estates--Mortgage Loans--Assignment of Mortgage  Loans to the Trustee"  in
the  Prospectus. In  addition, in  the event  that there  is any  recovery of an
amount in respect of principal which had previously been allocated as a Realized
Loss to the Class M Certificates, the  Class M Certificates will be entitled  to
their  pro rata share  of such recovery  up to the  amount by which  the Class M
Principal Balance was reduced as a result of such Realized Loss.
 
    The "Class  M  Percentage"  and  "Class M  Prepayment  Percentage"  for  any
Distribution  Date will  equal that portion  of the  Subordinated Percentage and
Subordinated Prepayment  Percentage, as  the  case may  be, represented  by  the
fraction  the  numerator  of which  is  the then-outstanding  Class  M Principal
Balance and the denominator of which is the sum of the Class M Principal Balance
and the  Class B  Subclass  Principal Balances  of  the subclasses  entitled  to
principal   distributions  for  such  Distribution  Date  as  described  in  the
succeeding paragraph.
 
    In  the  event  that  on  any   Distribution  Date,  the  Current  Class   M
Subordination  Level is less than the  Original Class M Subordination Level, the
Class B-1, Class B-2, Class B-3 and Class B-4 Certificates will not be  entitled
to  distributions in  respect of  principal and  the Class  B Subclass Principal
Balances of such subclasses will not be used to determine the Class M Percentage
and  Class  M  Prepayment  Percentage  for  such  Distribution  Date.  For  such
Distribution Date, the Class M Percentage and Class M Prepayment Percentage will
equal  the Subordinated  Percentage and the  Subordinated Prepayment Percentage,
respectively. In the event that the  Current Class M Subordination Level  equals
or  exceeds the Original Class  M Subordination Level but  the Current Class B-1
Subordination Level is less than the Original Class B-1 Subordination Level, the
Class B-2,  Class  B-3  and Class  B-4  Certificates  will not  be  entitled  to
distributions  in  respect  of  principal and  the  Class  B  Subclass Principal
Balances of such subclasses will not be used to determine the Class M Percentage
and the Class M Prepayment Percentage  for such Distribution Date. In the  event
that  each of the Current Class M  Subordination Level and the Current Class B-1
Subordination Level equals or exceeds  the Original Class M Subordination  Level
and  the Original Class  B-1 Subordination Level,  respectively, but the Current
Class B-2 Subordination Level is less than the Original Class B-2  Subordination
Level,  the  Class  B-3 and  Class  B-4  Certificates will  not  be  entitled to
distributions in  respect  of  principal  and the  Class  B  Subclass  Principal
Balances of such subclasses will not be used to determine the Class M Percentage
and  the Class M Prepayment Percentage for such Distribution Date. The Class B-3
and Class  B-4 Certificates  will  not have  original or  current  subordination
levels which are required to be maintained as described above.
 
    The  "Original Class  M Subordination Level"  is the  percentage obtained by
dividing the sum of the initial Class B Subclass Principal Balances of the Class
B-1, Class  B-2,  Class B-3  and  Class B-4  Certificates  by the  Cut-Off  Date
Aggregate  Principal  Balance  of  the  Mortgage  Loans.  The  Original  Class M
Subordination Level is expected to be approximately 3.75%. The "Current Class  M
Subordination  Level" for  any Distribution Date  is the  percentage obtained by
dividing the sum of the then-outstanding Class B Subclass Principal Balances  of
the Class B-1, Class B-2, Class B-3 and Class B-4 Certificates by the sum of the
Class  A  Principal Balance,  the  Class M  Principal  Balance and  the  Class B
Principal Balance.
 
    The "Original Class B-1 Subordination  Level" is the percentage obtained  by
dividing the sum of the initial Class B Subclass Principal Balances of the Class
B-2,  Class  B-3  and  Class  B-4 Certificates  by  the  Cut-Off  Date Aggregate
Principal Balance of the  Mortgage Loans. The  Original Class B-1  Subordination
Level   is  expected  to   be  approximately  1.75%.   The  "Current  Class  B-1
Subordination Level" for  any Distribution  Date is the  percentage obtained  by
dividing  the sum of the then-outstanding Class B Subclass Principal Balances of
the Class B-2, Class B-3  and Class B-4 Certificates by  the sum of the Class  A
Principal  Balance,  the Class  M Principal  Balance and  the Class  B Principal
Balance.
 
    The "Original Class B-2 Subordination  Level" is the percentage obtained  by
dividing the sum of the initial Class B Subclass Principal Balances of the Class
B-3 and Class B-4 Certificates by the Cut-Off Date
 
                                      S-32
<PAGE>
Aggregate  Principal  Balance  of the  Mortgage  Loans. The  Original  Class B-2
Subordination Level is expected  to be approximately  1.00%. The "Current  Class
B-2 Subordination Level" for any Distribution Date is the percentage obtained by
dividing  the sum of the then-outstanding Class B Subclass Principal Balances of
the Class B-3 and  Class B-4 Certificates  by the sum of  the Class A  Principal
Balance, the Class M Principal Balance and the Class B Principal Balance.
 
  ALLOCATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A AND CLASS M CERTIFICATES
 
    Solely  for purposes of determining  distributions in reduction of principal
balance, the Class A-16 and Class A-17 Certificates will be deemed to consist of
multiple components (each, a "Component"),  each with an identifiable  principal
balance  (the "Component  Principal Balance"). The  Beneficial Owner  of a Class
A-16 or Class A-17  Certificate will not  have a severable  interest in any  one
Component, but will have an undivided interest in the entire Subclass. The Class
A Subclass Principal Balances of the Class A-16 and Class A-17 Certificates will
be, on any date, the sum of the Component Principal Balances of their respective
outstanding Components as of such date. The Components comprising the Class A-16
and  Class A-17  Certificates and  their respective  initial Component Principal
Balances are set forth in the table below.
 
<TABLE>
<CAPTION>
    COMPONENT DESIGNATION                INITIAL COMPONENT PRINCIPAL BALANCE (1)
<S>                                      <C>
   Class A-16A PAC I Component.........                $ 9,000,000
   Class A-16B PAC I Component.........                $ 8,300,000
   Class A-16C PAC II Component........                $   700,000
   Class A-16D Companion Component.....                $18,500,000
   Class A-17A PAC I Component.........                $ 7,000,000
   Class A-17B PAC I Component.........                $   580,000
   Class A-17C Companion Component.....                $ 7,797,000
</TABLE>
 
(1) Approximate.  The  initial  Component  Principal  Balances  are  subject  to
    adjustment  in the event that the Class A Subclass Principal Balances of the
    respective Subclasses are adjusted as described herein.
 
    The Class A-16A PAC  I Component, Class A-16B  PAC I Component, Class  A-17A
PAC  I Component  and Class A-17B  PAC I Component  have payment characteristics
similar to the PAC I Certificates and are referred to herein collectively as the
"PAC I Components." The Class A-16C PAC II Component has payment characteristics
similar to  PAC  II Certificates  and  is referred  to  herein as  the  "PAC  II
Component."  The PAC I  Components and PAC  II Component are  referred to herein
collectively as the "PAC  Components." The Class  A-16D Companion Component  and
the  Class A-17C Companion Component receive  payments of principal allocated to
the Class  A  Certificates in  excess  of  certain prepayment  levels  prior  to
payments  to the PAC Certificates and  PAC Components and are therefore referred
to herein collectively as the "Companion Components."
 
    On each Distribution Date occurring prior to the Cross-Over Date, a  portion
of  the Class A Principal Distribution Amount, calculated by multiplying (x) the
fraction equal  to  $3,000  (I.E.,  the  aggregate  initial  Subclass  Principal
Balances  of the Class A-18,  Class A-R and Class  A-LR Certificates) divided by
the initial aggregate  Subclass Principal  Balance of the  Class A  Certificates
(which  fraction, expressed  as a  percentage, is  expected to  be approximately
0.000903%) by (y) the Class A Principal Distribution Amount, will be distributed
in reduction of the principal  balances of the Class  A-18, Class A-R and  Class
A-LR  Certificates, pro rata based on their Class A Subclass Principal Balances.
The remainder of the Class A Principal Distribution Amount on each  Distribution
Date  occurring prior  to the Cross-Over  Date (the "Adjusted  Class A Principal
Distribution Amount") will be  allocated among and  distributed in reduction  of
the principal balances of the Subclasses of Offered Certificates as follows:
 
        FIRST,   concurrently,  approximately   54.678681%  to   the  Class  A-1
    Certificates,  approximately  31.244961%  to  the  Class  A-2  Certificates,
    approximately   14.060232%  to   the  Class   A-16A  PAC   I  Component  and
    approximately  0.016126%  to  the  Class  A-10  Certificates,  up  to  their
    respective PAC Principal Amounts with respect to such Distribution Date;
 
                                      S-33
<PAGE>
        SECOND,   concurrently,  approximately  31.807457%   to  the  Class  A-2
    Certificates,  approximately  42.285741%  to  the  Class  A-3  Certificates,
    approximately  0.016417%  to  the  Class  A-10  Certificates,  approximately
    25.761051% to the Class A-11 Certificates and approximately 0.129334% to the
    Class A-12 Certificates, up to  their respective PAC Principal Amounts  with
    respect to such Distribution Date;
 
        THIRD,   concurrently,  approximately   62.024265%  to   the  Class  A-4
    Certificates, approximately 37.786029%  to the Class  A-11 Certificates  and
    approximately  0.189706%  to  the  Class  A-12  Certificates,  up  to  their
    respective PAC Principal Amounts with respect to such Distribution Date;
 
        FOURTH, concurrently,  (i) approximately  56.309716% to  be applied  (a)
    first,  to the Class A-6 Certificates up  to their PAC Principal Amount with
    respect to  such  Distribution  Date  and  (b)  second,  to  the  Class  A-5
    Certificates  up  to  their  PAC  Principal  Amount  with  respect  to  such
    Distribution  Date,  (ii)  approximately   34.304648%  to  the  Class   A-11
    Certificates  up  to  their  PAC  Principal  Amount  with  respect  to  such
    Distribution  Date,  (iii)  approximately   0.172228%  to  the  Class   A-12
    Certificates  up  to  their  PAC  Principal  Amount  with  respect  to  such
    Distribution Date and (iv) approximately 9.213408% to the Class A-17A PAC  I
    Component up to its PAC Principal Amount for such Distribution Date;
 
        FIFTH,   concurrently,  approximately   99.981939%  to   the  Class  A-7
    Certificates and approximately 0.018061% to the Class A-10 Certificates,  up
    to  their respective PAC Principal Amounts with respect to such Distribution
    Date;
 
        SIXTH,  concurrently,  approximately   50.032030%  to   the  Class   A-8
    Certificates,  approximately  15.779333%  to  the  Class  A-9  Certificates,
    approximately  0.012912%  to  the  Class  A-10  Certificates,  approximately
    31.943527% to the Class A-16B PAC I Component and approximately 2.232198% to
    the  Class  A-17B PAC  I  Component, up  to  their respective  PAC Principal
    Amounts with respect to such Distribution Date;
 
        SEVENTH, to  the Class  A-13 Certificates,  up to  their respective  PAC
    Principal Amount with respect to such Distribution Date;
 
        EIGHTH,  to  the Class  A-14 Certificates,  up  to their  respective PAC
    Principal Amount with respect to such Distribution Date;
 
        NINTH,  concurrently,  approximately  92.828604%   to  the  Class   A-15
    Certificates   and  approximately  7.171396%  to  the  Class  A-16C  PAC  II
    Component, up to their respective PAC Principal Amounts with respect to such
    Distribution Date;
 
        TENTH,  concurrently,  approximately  70.350230%  to  the  Class   A-16D
    Companion   Component  and  approximately  29.649770%  to  the  Class  A-17C
    Companion Component until the Component Principal Balances thereof have been
    reduced to zero;
 
        ELEVENTH, to the Class A-13  Certificates, the Class A-14  Certificates,
    the  Class A-15  Certificates and  the Class A-16C  PAC II  Component in the
    proportions and priorities set forth in clauses SEVENTH through NINTH above,
    without regard to their respective PAC Principal Amounts and until the Class
    A Subclass  Principal  Balance  of  each such  Subclass  and  the  Component
    Principal Balance of such Component has been reduced to zero;
 
        TWELFTH,  to the Class A-1, Class A-2, Class A-3, Class A-4, Class A-10,
    Class A-11 and Class A-12 Certificates  and the Class A-16A PAC I  Component
    in  the proportions and priorities set  forth in clauses FIRST through THIRD
    above, without regard to  their respective PAC  Principal Amounts and  until
    the  Class A Subclass Principal  Balance of the Class  A-1, Class A-2, Class
    A-3 and Class A-4 Certificates and  the Component Principal Balance of  such
    Component has been reduced to zero;
 
        THIRTEENTH, concurrently, (i) approximately 56.309716% to be applied (a)
    first,  to the Class A-5 Certificates  without regard to their PAC Principal
    Amount and until their Class A  Subclass Principal Balance has been  reduced
    to  zero and  (b) second,  to the Class  A-6 Certificates  without regard to
    their PAC  Principal  Amount and  until  their Class  A  Subclass  Principal
    Balance has been reduced to
 
                                      S-34
<PAGE>
    zero,  (ii) approximately 34.304648% to  the Class A-11 Certificates without
    regard to  their PAC  Principal  Amount and  until  their Class  A  Subclass
    Principal Balance has been reduced to zero, (iii) approximately 0.172228% to
    the Class A-12 Certificates without regard to their PAC Principal Amount and
    until  their Class A Subclass Principal Balance has been reduced to zero and
    (iv) approximately  9.213408% to  the Class  A-17A PAC  I Component  without
    regard  to  their PAC  Principal Amount  and  until the  Component Principal
    Balance thereof has been reduced to zero; and
 
        FOURTEENTH, to  the Class  A-7,  Class A-8,  Class  A-9 and  Class  A-10
    Certificates  and the Class A-16B PAC I  and Class A-17B PAC I Components in
    the proportions and priorities set forth  in clauses FIFTH and SIXTH  above,
    without regard to their respective PAC Principal Amounts and until the Class
    A  Subclass  Principal  Balance  of each  such  Subclass  and  the Component
    Principal Balance of each such Component has been reduced to zero.
 
    As used  above  in  the  preceding clauses,  "concurrently"  refers  to  the
simultaneous  payment in reduction of the Class A Subclass Principal Balances or
Component Principal Balance, as the case may  be, of the Class A Subclasses  and
PAC  Components  indicated. Therefore,  concurrent  payments under  any  of such
clauses (except under clause FOURTH with  respect to subclause (i)(a) or  clause
THIRTEENTH  with  respect  to subclause  (i)(a))  will  cease when  the  Class A
Subclass Principal  Balance  or  Component  Principal Balance  of  any  Class  A
Subclass  or PAC  Component has been  reduced to zero  and, thereafter, payments
will commence under the immediately following clause.
 
    As used above, the "PAC Principal Amount" for any Distribution Date and  for
any Subclass of PAC Certificates or PAC Component means the amount, if any, that
would  reduce  the  Class  A  Subclass Principal  Balance  of  such  Subclass or
Component Principal Balance of such  PAC Component, as the  case may be, to  the
percentage  of  its  initial Class  A  Subclass Principal  Balance  or Component
Principal  Balance  shown  in  the   following  tables  with  respect  to   such
Distribution Date.
 
    On  each Distribution  Date occurring on  or after the  Cross-Over Date, the
Class A Principal Distribution Amount  will be distributed among the  Subclasses
of Class A Certificates pro rata in accordance with their respective outstanding
Class A Subclass Principal Balances.
 
    Amounts  distributed on  each Distribution  Date to  the holders  of Class A
Certificates in  reduction of  principal  balance will  be allocated  among  the
holders  of Class A  Certificates of each  Subclass pro rata  in accordance with
their respective Percentage Interests.
 
    Amounts distributed  on any  Distribution Date  to the  holders of  Class  M
Certificates  in  reduction of  principal balance  will  be allocated  among the
holders of Class  M Certificates pro  rata in accordance  with their  respective
Percentage Interests.
 
    The  following tables set forth for each Distribution Date the planned Class
A Subclass Principal Balance and  Component Principal Balance for each  Subclass
of  PAC Certificates  or each  PAC Component, expressed  as a  percentage of the
initial Class A Subclass Principal Balance of such Subclass or initial Component
Principal Balance  of such  PAC Component.  The actual  amount distributable  as
principal  among the Class A Subclasses in accordance with the principal payment
priorities described above will  be affected by the  timing of the reduction  of
the  principal balances of  the PAC Certificates  and the PAC  Components to the
levels shown in the following tables.
 
                                      S-35
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                             CLASS A-1 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................      98.137143%
October 1992..................................................      96.119607
November 1992.................................................      93.948569
December 1992.................................................      91.625346
January 1993..................................................      89.151384
February 1993.................................................      86.528264
March 1993....................................................      83.757698
April 1993....................................................      80.841525
May 1993......................................................      77.781716
June 1993.....................................................      74.580366
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1993.....................................................      71.239692%
August 1993...................................................      67.762035
September 1993................................................      64.149854
October 1993..................................................      60.405724
November 1993.................................................      56.532334
December 1993.................................................      52.532484
January 1994..................................................      48.409079
February 1994.................................................      44.165129
March 1994....................................................      39.803746
April 1994....................................................      35.328136
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 1994......................................................      30.741600%
June 1994.....................................................      26.047741
July 1994.....................................................      21.250125
August 1994...................................................      16.352691
September 1994................................................      11.360252
October 1994..................................................       6.279235
November 1994.................................................       1.120107
December 1994
 and thereafter...............................................       0.000000
</TABLE>
 
                             CLASS A-2 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................      98.620106%
October 1992..................................................      97.125634
November 1992.................................................      95.517459
December 1992.................................................      93.796553
January 1993..................................................      91.963988
February 1993.................................................      90.020936
March 1993....................................................      87.968665
April 1993....................................................      85.808537
May 1993......................................................      83.542012
June 1993.....................................................      81.170641
July 1993.....................................................      78.696068
August 1993...................................................      76.120026
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1993................................................      73.444336%
October 1993..................................................      70.670907
November 1993.................................................      67.801729
December 1993.................................................      64.838877
January 1994..................................................      61.784503
February 1994.................................................      58.640836
March 1994....................................................      55.410182
April 1994....................................................      52.094915
May 1994......................................................      48.697481
June 1994.....................................................      45.220549
July 1994.....................................................      41.666759
August 1994...................................................      38.039030
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1994................................................      34.340927%
October 1994..................................................      30.577211
November 1994.................................................      26.755635
December 1994.................................................      22.833431
January 1995..................................................      18.883751
February 1995.................................................      14.962371
March 1995....................................................      11.076687
April 1995....................................................       7.226406
May 1995......................................................       3.411237
June 1995
 and thereafter...............................................       0.000000
</TABLE>
 
                          CLASS A-16A PAC I COMPONENT
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................      98.137143%
October 1992..................................................      96.119607
November 1992.................................................      93.948569
December 1992.................................................      91.625346
January 1993..................................................      89.151384
February 1993.................................................      86.528264
March 1993....................................................      83.757698
April 1993....................................................      80.841525
May 1993......................................................      77.781716
June 1993.....................................................      74.580366
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1993.....................................................      71.239692%
August 1993...................................................      67.762035
September 1993................................................      64.149854
October 1993..................................................      60.405724
November 1993.................................................      56.532335
December 1993.................................................      52.532484
January 1994..................................................      48.409079
February 1994.................................................      44.165129
March 1994....................................................      39.803746
April 1994....................................................      35.328136
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 1994......................................................      30.741600%
June 1994.....................................................      26.047742
July 1994.....................................................      21.250126
August 1994...................................................      16.352691
September 1994................................................      11.360253
October 1994..................................................       6.279236
November 1994.................................................       1.120108
December 1994
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-36
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                             CLASS A-3 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
November 1994.................................................     100.000000%
December 1994.................................................      88.071806
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 1995..................................................      72.837325%
February 1995.................................................      57.712003
March 1995....................................................      42.724364
April 1995....................................................      27.873278
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 1995......................................................      13.157628%
June 1995
 and thereafter...............................................       0.000000
</TABLE>
 
                             CLASS A-4 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
May 1995......................................................     100.000000%
June 1995.....................................................      99.397695
July 1995.....................................................      93.285324
August 1995...................................................      87.228854
September 1995................................................      81.227829
October 1995..................................................      75.281794
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
November 1995.................................................      69.390300%
December 1995.................................................      63.552903
January 1996..................................................      57.769160
February 1996.................................................      52.038634
March 1996....................................................      46.360890
April 1996....................................................      40.735498
May 1996......................................................      35.162031
June 1996.....................................................      29.640068
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1996.....................................................      24.169188%
August 1996...................................................      18.748975
September 1996................................................      13.379019
October 1996..................................................       8.058910
November 1996.................................................       2.788243
December 1996
 and thereafter...............................................       0.000000
</TABLE>
 
                             CLASS A-5 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
November 1996.................................................     100.000000%
December 1996.................................................      93.071603
January 1997..................................................      78.342936
February 1997.................................................      63.751645
March 1997....................................................      49.296616
April 1997....................................................      34.976745
May 1997......................................................      20.790938
June 1997.....................................................       6.738111
July 1997.....................................................       4.858982
August 1997...................................................       4.015347
September 1997................................................       3.262575
October 1997..................................................       2.551933
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
November 1997.................................................       1.882896%
December 1997.................................................       1.254945
January 1998..................................................       0.729642
February 1998.................................................       0.424986
March 1998....................................................       0.335064
April 1998....................................................       0.335064
May 1998......................................................       0.335064
June 1998.....................................................       0.335064
July 1998.....................................................       0.335064
August 1998...................................................       0.335064
September 1998................................................       0.335064
October 1998..................................................       0.335064
November 1998.................................................       0.335064
December 1998.................................................       0.335064
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 1999..................................................       0.335064%
February 1999.................................................       0.335064
March 1999....................................................       0.335064
April 1999....................................................       0.335064
May 1999......................................................       0.335064
June 1999.....................................................       0.335064
July 1999.....................................................       0.335064
August 1999...................................................       0.335064
September 1999................................................       0.335064
October 1999..................................................       0.335064
November 1999.................................................       0.335064
December 1999.................................................       0.335064
January 2000
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-37
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                             CLASS A-6 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
June 1997.....................................................     100.000000%
July 1997.....................................................      96.187420
August 1997...................................................      92.088415
September 1997................................................      88.068002
October 1997..................................................      84.074116
November 1997.................................................      80.106590
December 1997.................................................      76.165257
January 1998..................................................      72.249953
February 1998.................................................      68.360515
March 1998....................................................      64.496778
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
April 1998....................................................      60.696269%
May 1998......................................................      56.985503
June 1998.....................................................      53.362571
July 1998.....................................................      49.825597
August 1998...................................................      46.372748
September 1998................................................      43.046775
October 1998..................................................      39.800195
November 1998.................................................      36.631295
December 1998.................................................      33.538398
January 1999..................................................      30.519862
February 1999.................................................      27.574076
March 1999....................................................      24.699467
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
April 1999....................................................      21.894491%
May 1999......................................................      19.157637
June 1999.....................................................      16.487424
July 1999.....................................................      13.882404
August 1999...................................................      11.341156
September 1999................................................       8.936921
October 1999..................................................       6.591134
November 1999.................................................       4.302503
December 1999.................................................       2.069766
January 2000
 and thereafter...............................................       0.000000
</TABLE>
 
                            CLASS A-11 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
November 1994.................................................     100.000000%
December 1994.................................................      98.684057
January 1995..................................................      97.003357
February 1995.................................................      95.334699
March 1995....................................................      93.681232
April 1995....................................................      92.042829
May 1995......................................................      90.419367
June 1995.....................................................      88.737409
July 1995.....................................................      86.399428
August 1995...................................................      84.082830
September 1995................................................      81.787440
October 1995..................................................      79.513083
November 1995.................................................      77.259588
December 1995.................................................      75.026785
January 1996..................................................      72.814505
February 1996.................................................      70.622580
March 1996....................................................      68.450845
April 1996....................................................      66.299134
May 1996......................................................      64.167284
June 1996.....................................................      62.055135
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1996.....................................................      59.962525%
August 1996...................................................      57.889295
September 1996................................................      55.835288
October 1996..................................................      53.800348
November 1996.................................................      51.784319
December 1996.................................................      49.872804
January 1997..................................................      48.076442
February 1997.................................................      46.296835
March 1997....................................................      44.533847
April 1997....................................................      42.787343
May 1997......................................................      41.057190
June 1997.....................................................      39.343256
July 1997.....................................................      37.645410
August 1997...................................................      35.963520
September 1997................................................      34.322988
October 1997..................................................      32.697813
November 1997.................................................      31.087866
December 1997.................................................      29.493020
January 1998..................................................      27.920721
February 1998.................................................      26.385295
March 1998....................................................      24.885961
April 1998....................................................      23.421949
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 1998......................................................      21.992509%
June 1998.....................................................      20.596902
July 1998.....................................................      19.234409
August 1998...................................................      17.904321
September 1998................................................      16.623108
October 1998..................................................      15.372479
November 1998.................................................      14.151772
December 1998.................................................      12.960343
January 1999..................................................      11.797559
February 1999.................................................      10.662800
March 1999....................................................       9.555459
April 1999....................................................       8.474941
May 1999......................................................       7.420665
June 1999.....................................................       6.392061
July 1999.....................................................       5.388569
August 1999...................................................       4.409644
September 1999................................................       3.483497
October 1999..................................................       2.579866
November 1999.................................................       1.698252
December 1999.................................................       0.838169
January 2000
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-38
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                            CLASS A-12 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
November 1994.................................................     100.000000%
December 1994.................................................      98.684058
January 1995..................................................      97.003357
February 1995.................................................      95.334698
March 1995....................................................      93.681229
April 1995....................................................      92.042826
May 1995......................................................      90.419364
June 1995.....................................................      88.737411
July 1995.....................................................      86.399430
August 1995...................................................      84.082833
September 1995................................................      81.787442
October 1995..................................................      79.513085
November 1995.................................................      77.259589
December 1995.................................................      75.026787
January 1996..................................................      72.814508
February 1996.................................................      70.622581
March 1996....................................................      68.450845
April 1996....................................................      66.299136
May 1996......................................................      64.167287
June 1996.....................................................      62.055136
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1996.....................................................      59.962527%
August 1996...................................................      57.889298
September 1996................................................      55.835291
October 1996..................................................      53.800349
November 1996.................................................      51.784322
December 1996.................................................      49.872806
January 1997..................................................      48.076446
February 1997.................................................      46.296837
March 1997....................................................      44.533849
April 1997....................................................      42.787345
May 1997......................................................      41.057194
June 1997.....................................................      39.343260
July 1997.....................................................      37.645415
August 1997...................................................      35.963527
September 1997................................................      34.322996
October 1997..................................................      32.697822
November 1997.................................................      31.087876
December 1997.................................................      29.493031
January 1998..................................................      27.920733
February 1998.................................................      26.385306
March 1998....................................................      24.885973
April 1998....................................................      23.421961
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 1998......................................................      21.992519%
June 1998.....................................................      20.596915
July 1998.....................................................      19.234422
August 1998...................................................      17.904333
September 1998................................................      16.623120
October 1998..................................................      15.372492
November 1998.................................................      14.151787
December 1998.................................................      12.960357
January 1999..................................................      11.797574
February 1999.................................................      10.662814
March 1999....................................................       9.555473
April 1999....................................................       8.474953
May 1999......................................................       7.420678
June 1999.....................................................       6.392074
July 1999.....................................................       5.388581
August 1999...................................................       4.409655
September 1999................................................       3.483508
October 1999..................................................       2.579876
November 1999.................................................       1.698264
December 1999.................................................       0.838182
January 2000
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-39
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                          CLASS A-17A PAC I COMPONENT
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
November 1996.................................................     100.000000%
December 1996.................................................      98.333894
January 1997..................................................      94.792018
February 1997.................................................      91.283178
March 1997....................................................      87.807105
April 1997....................................................      84.363535
May 1997......................................................      80.952204
June 1997.....................................................      77.572850
July 1997.....................................................      74.225217
August 1997...................................................      70.909047
September 1997................................................      67.674420
October 1997..................................................      64.470072
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
November 1997.................................................      61.295749%
December 1997.................................................      58.151202
January 1998..................................................      55.051109
February 1998.................................................      52.023721
March 1998....................................................      49.067492
April 1998....................................................      46.180910
May 1998......................................................      43.362491
June 1998.....................................................      40.610783
July 1998.....................................................      37.924363
August 1998...................................................      35.301837
September 1998................................................      32.775678
October 1998..................................................      30.309819
November 1998.................................................      27.902960
December 1998.................................................      25.553828
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 1999..................................................      23.261173%
February 1999.................................................      21.023776
March 1999....................................................      18.840438
April 1999....................................................      16.709988
May 1999......................................................      14.631279
June 1999.....................................................      12.603186
July 1999.....................................................      10.624608
August 1999...................................................       8.694467
September 1999................................................       6.868390
October 1999..................................................       5.086706
November 1999.................................................       3.348434
December 1999.................................................       1.652613
January 2000
 and thereafter...............................................       0.000000
</TABLE>
 
                             CLASS A-7 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
December 1999.................................................     100.000000%
January 2000..................................................      99.991421
February 2000.................................................      91.819297
March 2000....................................................      83.848180
April 2000....................................................      76.073604
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
May 2000......................................................      68.491198%
June 2000.....................................................      61.096682
July 2000.....................................................      53.885866
August 2000...................................................      46.854650
September 2000................................................      40.224718
October 2000..................................................      33.756228
November 2000.................................................      27.445582
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
December 2000.................................................      21.289258%
January 2001..................................................      15.283810
February 2001.................................................       9.425866
March 2001....................................................       3.712124
April 2001
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-40
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                             CLASS A-8 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
March 2001....................................................     100.000000%
April 2001....................................................      98.925668
May 2001......................................................      95.787536
June 2001.....................................................      92.727187
July 2001.....................................................      89.742872
August 2001...................................................      86.832878
September 2001................................................      84.091184
October 2001..................................................      81.415038
November 2001.................................................      78.803012
December 2001.................................................      76.253709
January 2002..................................................      73.765760
February 2002.................................................      71.337824
March 2002....................................................      68.968590
April 2002....................................................      66.656772
May 2002......................................................      64.401111
June 2002.....................................................      62.200377
July 2002.....................................................      60.053363
August 2002...................................................      57.958887
September 2002................................................      55.915793
October 2002..................................................      53.922949
November 2002.................................................      51.979246
December 2002.................................................      50.083600
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2003..................................................      48.234946%
February 2003.................................................      46.432246
March 2003....................................................      44.674479
April 2003....................................................      42.960650
May 2003......................................................      41.289782
June 2003.....................................................      39.660918
July 2003.....................................................      38.073125
August 2003...................................................      36.525484
September 2003................................................      35.017100
October 2003..................................................      33.547095
November 2003.................................................      32.114610
December 2003.................................................      30.718803
January 2004..................................................      29.358851
February 2004.................................................      28.033948
March 2004....................................................      26.743305
April 2004....................................................      25.486149
May 2004......................................................      24.261725
June 2004.....................................................      23.069292
July 2004.....................................................      21.908127
August 2004...................................................      20.777520
September 2004................................................      19.676778
October 2004..................................................      18.605220
November 2004.................................................      17.562184
December 2004.................................................      16.547017
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2005..................................................      15.559084%
February 2005.................................................      14.597761
March 2005....................................................      13.662438
April 2005....................................................      12.752519
May 2005......................................................      11.867419
June 2005.....................................................      11.006567
July 2005.....................................................      10.169403
August 2005...................................................       9.355381
September 2005................................................       8.563963
October 2005..................................................       7.794627
November 2005.................................................       7.046858
December 2005.................................................       6.320156
January 2006..................................................       5.614029
February 2006.................................................       4.927997
March 2006....................................................       4.261588
April 2006....................................................       3.614344
May 2006......................................................       2.985814
June 2006.....................................................       2.375558
July 2006.....................................................       1.783144
August 2006...................................................       1.208152
September 2006................................................       0.650168
October 2006..................................................       0.108789
November 2006
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-41
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                             CLASS A-9 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
March 2001....................................................     100.000000%
April 2001....................................................      98.925668
May 2001......................................................      95.787536
June 2001.....................................................      92.727187
July 2001.....................................................      89.742872
August 2001...................................................      86.832878
September 2001................................................      84.091184
October 2001..................................................      81.415038
November 2001.................................................      78.803012
December 2001.................................................      76.253709
January 2002..................................................      73.765760
February 2002.................................................      71.337824
March 2002....................................................      68.968590
April 2002....................................................      66.656771
May 2002......................................................      64.401111
June 2002.....................................................      62.200377
July 2002.....................................................      60.053363
August 2002...................................................      57.958887
September 2002................................................      55.915793
October 2002..................................................      53.922949
November 2002.................................................      51.979246
December 2002.................................................      50.083600
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2003..................................................      48.234946%
February 2003.................................................      46.432246
March 2003....................................................      44.674479
April 2003....................................................      42.960650
May 2003......................................................      41.289782
June 2003.....................................................      39.660918
July 2003.....................................................      38.073124
August 2003...................................................      36.525484
September 2003................................................      35.017100
October 2003..................................................      33.547095
November 2003.................................................      32.114610
December 2003.................................................      30.718803
January 2004..................................................      29.358851
February 2004.................................................      28.033948
March 2004....................................................      26.743305
April 2004....................................................      25.486149
May 2004......................................................      24.261725
June 2004.....................................................      23.069292
July 2004.....................................................      21.908127
August 2004...................................................      20.777520
September 2004................................................      19.676777
October 2004..................................................      18.605220
November 2004.................................................      17.562184
December 2004.................................................      16.547017
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2005..................................................      15.559084%
February 2005.................................................      14.597761
March 2005....................................................      13.662438
April 2005....................................................      12.752519
May 2005......................................................      11.867419
June 2005.....................................................      11.006567
July 2005.....................................................      10.169403
August 2005...................................................       9.355381
September 2005................................................       8.563963
October 2005..................................................       7.794627
November 2005.................................................       7.046858
December 2005.................................................       6.320156
January 2006..................................................       5.614029
February 2006.................................................       4.927996
March 2006....................................................       4.261588
April 2006....................................................       3.614344
May 2006......................................................       2.985814
June 2006.....................................................       2.375558
July 2006.....................................................       1.783144
August 2006...................................................       1.208152
September 2006................................................       0.650168
October 2006..................................................       0.108789
November 2006
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-42
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                          CLASS A-16B PAC I COMPONENT
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
March 2001....................................................     100.000000%
April 2001....................................................      98.925668
May 2001......................................................      95.787536
June 2001.....................................................      92.727187
July 2001.....................................................      89.742872
August 2001...................................................      86.832878
September 2001................................................      84.091184
October 2001..................................................      81.415038
November 2001.................................................      78.803012
December 2001.................................................      76.253709
January 2002..................................................      73.765760
February 2002.................................................      71.337824
March 2002....................................................      68.968590
April 2002....................................................      66.656772
May 2002......................................................      64.401111
June 2002.....................................................      62.200377
July 2002.....................................................      60.053363
August 2002...................................................      57.958887
September 2002................................................      55.915793
October 2002..................................................      53.922949
November 2002.................................................      51.979247
December 2002.................................................      50.083600
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2003..................................................      48.234947%
February 2003.................................................      46.432246
March 2003....................................................      44.674480
April 2003....................................................      42.960651
May 2003......................................................      41.289782
June 2003.....................................................      39.660919
July 2003.....................................................      38.073125
August 2003...................................................      36.525484
September 2003................................................      35.017101
October 2003..................................................      33.547096
November 2003.................................................      32.114610
December 2003.................................................      30.718804
January 2004..................................................      29.358852
February 2004.................................................      28.033948
March 2004....................................................      26.743305
April 2004....................................................      25.486150
May 2004......................................................      24.261725
June 2004.....................................................      23.069293
July 2004.....................................................      21.908127
August 2004...................................................      20.777521
September 2004................................................      19.676778
October 2004..................................................      18.605221
November 2004.................................................      17.562184
December 2004.................................................      16.547018
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2005..................................................      15.559085%
February 2005.................................................      14.597762
March 2005....................................................      13.662439
April 2005....................................................      12.752520
May 2005......................................................      11.867420
June 2005.....................................................      11.006568
July 2005.....................................................      10.169404
August 2005...................................................       9.355381
September 2005................................................       8.563964
October 2005..................................................       7.794627
November 2005.................................................       7.046859
December 2005.................................................       6.320157
January 2006..................................................       5.614030
February 2006.................................................       4.927997
March 2006....................................................       4.261589
April 2006....................................................       3.614345
May 2006......................................................       2.985815
June 2006.....................................................       2.375559
July 2006.....................................................       1.783145
August 2006...................................................       1.208153
September 2006................................................       0.650169
October 2006..................................................       0.108790
November 2006
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-43
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                          CLASS A-17B PAC I COMPONENT
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
March 2001....................................................     100.000000%
April 2001....................................................      98.925668
May 2001......................................................      95.787536
June 2001.....................................................      92.727187
July 2001.....................................................      89.742872
August 2001...................................................      86.832878
September 2001................................................      84.091184
October 2001..................................................      81.415038
November 2001.................................................      78.803012
December 2001.................................................      76.253709
January 2002..................................................      73.765760
February 2002.................................................      71.337824
March 2002....................................................      68.968590
April 2002....................................................      66.656772
May 2002......................................................      64.401111
June 2002.....................................................      62.200377
July 2002.....................................................      60.053363
August 2002...................................................      57.958887
September 2002................................................      55.915793
October 2002..................................................      53.922949
November 2002.................................................      51.979247
December 2002.................................................      50.083600
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2003..................................................      48.234947%
February 2003.................................................      46.432246
March 2003....................................................      44.674480
April 2003....................................................      42.960651
May 2003......................................................      41.289782
June 2003.....................................................      39.660919
July 2003.....................................................      38.073125
August 2003...................................................      36.525484
September 2003................................................      35.017101
October 2003..................................................      33.547096
November 2003.................................................      32.114610
December 2003.................................................      30.718804
January 2004..................................................      29.358852
February 2004.................................................      28.033948
March 2004....................................................      26.743305
April 2004....................................................      25.486150
May 2004......................................................      24.261725
June 2004.....................................................      23.069293
July 2004.....................................................      21.908128
August 2004...................................................      20.777521
September 2004................................................      19.676778
October 2004..................................................      18.605221
November 2004.................................................      17.562184
December 2004.................................................      16.547018
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
January 2005..................................................      15.559085%
February 2005.................................................      14.597762
March 2005....................................................      13.662439
April 2005....................................................      12.752520
May 2005......................................................      11.867420
June 2005.....................................................      11.006568
July 2005.....................................................      10.169404
August 2005...................................................       9.355381
September 2005................................................       8.563964
October 2005..................................................       7.794627
November 2005.................................................       7.046859
December 2005.................................................       6.320157
January 2006..................................................       5.614030
February 2006.................................................       4.927997
March 2006....................................................       4.261589
April 2006....................................................       3.614345
May 2006......................................................       2.985815
June 2006.....................................................       2.375559
July 2006.....................................................       1.783145
August 2006...................................................       1.208153
September 2006................................................       0.650169
October 2006..................................................       0.108790
November 2006
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-44
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                            CLASS A-10 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................      99.038550%
October 1992..................................................      97.997250
November 1992.................................................      96.876700
December 1992.................................................      95.677600
January 1993..................................................      94.400700
February 1993.................................................      93.046850
March 1993....................................................      91.616900
April 1993....................................................      90.111800
May 1993......................................................      88.532550
June 1993.....................................................      86.880250
July 1993.....................................................      85.156050
August 1993...................................................      83.361150
September 1993................................................      81.496800
October 1993..................................................      79.564350
November 1993.................................................      77.565200
December 1993.................................................      75.500750
January 1994..................................................      73.372550
February 1994.................................................      71.182150
March 1994....................................................      68.931100
April 1994....................................................      66.621100
May 1994......................................................      64.253850
June 1994.....................................................      61.831200
July 1994.....................................................      59.355000
August 1994...................................................      56.827300
September 1994................................................      54.250550
October 1994..................................................      51.628100
November 1994.................................................      48.965350
December 1994.................................................      46.232350
January 1995..................................................      43.480300
February 1995.................................................      40.748000
March 1995....................................................      38.040550
April 1995....................................................      35.357750
May 1995......................................................      32.699450
June 1995.....................................................      30.322600
July 1995.....................................................      30.322600
August 1995...................................................      30.322600
September 1995................................................      30.322600
October 1995..................................................      30.322600
November 1995.................................................      30.322600
December 1995.................................................      30.322600
January 1996..................................................      30.322600
February 1996.................................................      30.322600
March 1996....................................................      30.322600
April 1996....................................................      30.322600
May 1996......................................................      30.322600
June 1996.....................................................      30.322600
July 1996.....................................................      30.322600
August 1996...................................................      30.322600
September 1996................................................      30.322600
October 1996..................................................      30.322600
November 1996.................................................      30.322600
December 1996.................................................      30.322600
January 1997..................................................      30.322600
February 1997.................................................      30.322600
March 1997....................................................      30.322600
April 1997....................................................      30.322600
May 1997......................................................      30.322600
June 1997.....................................................      30.322600
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
July 1997.....................................................      30.322600%
August 1997...................................................      30.322600
September 1997................................................      30.322600
October 1997..................................................      30.322600
November 1997.................................................      30.322600
December 1997.................................................      30.322600
January 1998..................................................      30.322600
February 1998.................................................      30.322600
March 1998....................................................      30.322600
April 1998....................................................      30.322600
May 1998......................................................      30.322600
June 1998.....................................................      30.322600
July 1998.....................................................      30.322600
August 1998...................................................      30.322600
September 1998................................................      30.322600
October 1998..................................................      30.322600
November 1998.................................................      30.322600
December 1998.................................................      30.322600
January 1999..................................................      30.322600
February 1999.................................................      30.322600
March 1999....................................................      30.322600
April 1999....................................................      30.322600
May 1999......................................................      30.322600
June 1999.....................................................      30.322600
July 1999.....................................................      30.322600
August 1999...................................................      30.322600
September 1999................................................      30.322600
October 1999..................................................      30.322600
November 1999.................................................      30.322600
December 1999.................................................      30.322600
January 2000..................................................      30.321450
February 2000.................................................      29.214250
March 2000....................................................      28.134300
April 2000....................................................      27.080950
May 2000......................................................      26.053650
June 2000.....................................................      25.051800
July 2000.....................................................      24.074850
August 2000...................................................      23.122250
September 2000................................................      22.224000
October 2000..................................................      21.347600
November 2000.................................................      20.492600
December 2000.................................................      19.658500
January 2001..................................................      18.844850
February 2001.................................................      18.051200
March 2001....................................................      17.277100
April 2001....................................................      16.594000
May 2001......................................................      16.067600
June 2001.....................................................      15.554250
July 2001.....................................................      15.053650
August 2001...................................................      14.565500
September 2001................................................      14.105600
October 2001..................................................      13.656700
November 2001.................................................      13.218550
December 2001.................................................      12.790900
January 2002..................................................      12.373550
February 2002.................................................      11.966300
March 2002....................................................      11.568900
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
April 2002....................................................      11.181100%
May 2002......................................................      10.802750
June 2002.....................................................      10.433600
July 2002.....................................................      10.073450
August 2002...................................................       9.722100
September 2002................................................       9.379400
October 2002..................................................       9.045100
November 2002.................................................       8.719050
December 2002.................................................       8.401050
January 2003..................................................       8.090950
February 2003.................................................       7.788550
March 2003....................................................       7.493700
April 2003....................................................       7.206200
May 2003......................................................       6.925950
June 2003.....................................................       6.652700
July 2003.....................................................       6.386350
August 2003...................................................       6.126750
September 2003................................................       5.873750
October 2003..................................................       5.627150
November 2003.................................................       5.386850
December 2003.................................................       5.152700
January 2004..................................................       4.924600
February 2004.................................................       4.702350
March 2004....................................................       4.485850
April 2004....................................................       4.274950
May 2004......................................................       4.069550
June 2004.....................................................       3.869550
July 2004.....................................................       3.674750
August 2004...................................................       3.485100
September 2004................................................       3.300450
October 2004..................................................       3.120700
November 2004.................................................       2.945750
December 2004.................................................       2.775450
January 2005..................................................       2.609750
February 2005.................................................       2.448500
March 2005....................................................       2.291600
April 2005....................................................       2.138950
May 2005......................................................       1.990500
June 2005.....................................................       1.846100
July 2005.....................................................       1.705650
August 2005...................................................       1.569100
September 2005................................................       1.436350
October 2005..................................................       1.307300
November 2005.................................................       1.181850
December 2005.................................................       1.059950
January 2006..................................................       0.941500
February 2006.................................................       0.826400
March 2006....................................................       0.714600
April 2006....................................................       0.606050
May 2006......................................................       0.500600
June 2006.....................................................       0.398250
July 2006.....................................................       0.298900
August 2006...................................................       0.202450
September 2006................................................       0.108850
October 2006..................................................       0.018050
November 2006
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-45
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                            CLASS A-13 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1992................................................      99.653995%
October 1992..................................................      99.185009
November 1992.................................................      98.594070
December 1992.................................................      97.882458
January 1993..................................................      97.051710
February 1993.................................................      96.103610
March 1993....................................................      95.040195
April 1993....................................................      93.863745
May 1993......................................................      92.576780
June 1993.....................................................      91.182059
July 1993.....................................................      89.682572
August 1993...................................................      88.081531
September 1993................................................      86.382372
October 1993..................................................      84.588738
November 1993.................................................      82.704477
December 1993.................................................      80.733633
January 1994..................................................      78.680435
February 1994.................................................      76.549291
March 1994....................................................      74.344774
April 1994....................................................      72.071613
May 1994......................................................      69.734684
June 1994.....................................................      67.339173
July 1994.....................................................      64.890278
August 1994...................................................      62.393548
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1994................................................      59.855262%
October 1994..................................................      57.282997
November 1994.................................................      54.687532
December 1994.................................................      52.083996
January 1995..................................................      49.510770
February 1995.................................................      47.012089
March 1995....................................................      44.595015
April 1995....................................................      42.258140
May 1995......................................................      40.000079
June 1995.....................................................      37.819465
July 1995.....................................................      35.714951
August 1995...................................................      33.685211
September 1995................................................      31.728937
October 1995..................................................      29.844841
November 1995.................................................      28.031651
December 1995.................................................      26.288117
January 1996..................................................      24.613005
February 1996.................................................      23.005098
March 1996....................................................      21.463201
April 1996....................................................      19.986131
May 1996......................................................      18.572726
June 1996.....................................................      17.221840
July 1996.....................................................      15.932343
August 1996...................................................      14.703123
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
September 1996................................................      13.533083%
October 1996..................................................      12.421143
November 1996.................................................      11.366238
December 1996.................................................      10.367319
January 1997..................................................       9.423353
February 1997.................................................       8.533322
March 1997....................................................       7.696223
April 1997....................................................       6.911068
May 1997......................................................       6.176882
June 1997.....................................................       5.492708
July 1997.....................................................       4.857600
August 1997...................................................       4.270628
September 1997................................................       3.784800
October 1997..................................................       3.344368
November 1997.................................................       2.948441
December 1997.................................................       2.608928
January 1998..................................................       2.313500
February 1998.................................................       1.989846
March 1998....................................................       1.639201
April 1998....................................................       1.262764
May 1998......................................................       0.861700
June 1998.....................................................       0.437138
July 1998
 and thereafter...............................................       0.000000
</TABLE>
 
- --------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-46
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                            CLASS A-14 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
June 1998.....................................................     100.000000%
July 1998.....................................................      99.971184
August 1998...................................................      98.597516
September 1998................................................      97.121025
October 1998..................................................      95.589580
November 1998.................................................      94.006006
December 1998.................................................      92.373043
January 1999..................................................      90.693346
February 1999.................................................      88.969493
March 1999....................................................      87.203979
April 1999....................................................      85.399225
May 1999......................................................      83.557577
June 1999.....................................................      81.681308
July 1999.....................................................      79.772618
August 1999...................................................      77.833641
September 1999................................................      75.799952
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
October 1999..................................................      73.743578%
November 1999.................................................      71.666352
December 1999.................................................      69.570051
January 2000..................................................      67.456390
February 2000.................................................      65.327028
March 2000....................................................      63.183567
April 2000....................................................      61.027555
May 2000......................................................      58.860487
June 2000.....................................................      56.683807
July 2000.....................................................      54.498907
August 2000...................................................      52.307132
September 2000................................................      50.064767
October 2000..................................................      47.821515
November 2000.................................................      45.578438
December 2000.................................................      43.336562
January 2001..................................................      41.096871
February 2001.................................................      38.860313
March 2001....................................................      36.627797
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
April 2001....................................................      34.400199%
May 2001......................................................      32.178356
June 2001.....................................................      29.963075
July 2001.....................................................      27.755129
August 2001...................................................      25.555256
September 2001................................................      23.338494
October 2001..................................................      21.134030
November 2001.................................................      18.942355
December 2001.................................................      16.763937
January 2002..................................................      14.599221
February 2002.................................................      12.448631
March 2002....................................................      10.312571
April 2002....................................................       8.191424
May 2002......................................................       6.085552
June 2002.....................................................       3.995301
July 2002.....................................................       1.920994
August 2002
 and thereafter...............................................       0.000000
</TABLE>
 
                            CLASS A-15 CERTIFICATES
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
July 2002.....................................................     100.000000%
August 2002...................................................      99.852564
September 2002................................................      97.656493
October 2002..................................................      95.478511
November 2002.................................................      93.318896
December 2002.................................................      91.177906
January 2003..................................................      89.055784
February 2003.................................................      86.952758
March 2003....................................................      84.869038
April 2003....................................................      82.804820
May 2003......................................................      80.760287
June 2003.....................................................      78.735605
July 2003.....................................................      76.730929
August 2003...................................................      74.746400
September 2003................................................      72.782145
October 2003..................................................      70.838279
November 2003.................................................      68.914907
December 2003.................................................      67.012121
January 2004..................................................      65.130001
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
February 2004.................................................      63.268618%
March 2004....................................................      61.428031
April 2004....................................................      59.608290
May 2004......................................................      57.809435
June 2004.....................................................      56.031496
July 2004.....................................................      54.274495
August 2004...................................................      52.538445
September 2004................................................      50.823349
October 2004..................................................      49.129204
November 2004.................................................      47.455999
December 2004.................................................      45.803714
January 2005..................................................      44.172323
February 2005.................................................      42.561792
March 2005....................................................      40.972081
April 2005....................................................      39.403144
May 2005......................................................      37.854928
June 2005.....................................................      36.327374
July 2005.....................................................      34.820417
August 2005...................................................      33.333988
September 2005................................................      31.868011
October 2005..................................................      30.422407
<CAPTION>
                                                                  PERCENTAGE OF
                                                                 INITIAL CLASS A
                         DISTRIBUTION                               SUBCLASS
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
November 2005.................................................      28.997088%
December 2005.................................................      27.591967
January 2006..................................................      26.206948
February 2006.................................................      24.841933
March 2006....................................................      23.496819
April 2006....................................................      22.171500
May 2006......................................................      20.865866
June 2006.....................................................      19.579803
July 2006.....................................................      18.313193
August 2006...................................................      17.065917
September 2006................................................      15.837851
October 2006..................................................      14.628869
November 2006.................................................      12.330460
December 2006.................................................       9.807033
January 2007..................................................       7.344959
February 2007.................................................       4.947998
March 2007....................................................       2.627924
April 2007....................................................       0.409319
May 2007
 and thereafter...............................................       0.000000
</TABLE>
 
                                      S-47
<PAGE>
                  PLANNED CLASS A SUBCLASS PRINCIPAL BALANCES
                      AND COMPONENT PRINCIPAL BALANCES(1)
         AS PERCENTAGES OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCES
                    AND INITIAL COMPONENT PRINCIPAL BALANCES
 
                          CLASS A-16C PAC II COMPONENT
<TABLE>
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
Up to and
including
July 2002.....................................................     100.000000%
August 2002...................................................      99.852564
September 2002................................................      97.656493
October 2002..................................................      95.478511
November 2002.................................................      93.318896
December 2002.................................................      91.177906
January 2003..................................................      89.055784
February 2003.................................................      86.952758
March 2003....................................................      84.869038
April 2003....................................................      82.804820
May 2003......................................................      80.760287
June 2003.....................................................      78.735605
July 2003.....................................................      76.730929
August 2003...................................................      74.746400
September 2003................................................      72.782145
October 2003..................................................      70.838279
November 2003.................................................      68.914907
December 2003.................................................      67.012121
January 2004..................................................      65.130001
 
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
February 2004.................................................      63.268618%
March 2004....................................................      61.428031
April 2004....................................................      59.608290
May 2004......................................................      57.809435
June 2004.....................................................      56.031496
July 2004.....................................................      54.274495
August 2004...................................................      52.538445
September 2004................................................      50.823349
October 2004..................................................      49.129204
November 2004.................................................      47.455999
December 2004.................................................      45.803714
January 2005..................................................      44.172323
February 2005.................................................      42.561792
March 2005....................................................      40.972081
April 2005....................................................      39.403144
May 2005......................................................      37.854928
June 2005.....................................................      36.327374
July 2005.....................................................      34.820417
August 2005...................................................      33.333988
September 2005................................................      31.868012
October 2005..................................................      30.422407
<CAPTION>
                                                                  PERCENTAGE OF
                                                                     INITIAL
                         DISTRIBUTION                               COMPONENT
                             DATE                               PRINCIPAL BALANCE
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
November 2005.................................................      28.997088%
December 2005.................................................      27.591967
January 2006..................................................      26.206948
February 2006.................................................      24.841933
March 2006....................................................      23.496819
April 2006....................................................      22.171500
May 2006......................................................      20.865866
June 2006.....................................................      19.579803
July 2006.....................................................      18.313193
August 2006...................................................      17.065917
September 2006................................................      15.837851
October 2006..................................................      14.628869
November 2006.................................................      12.330460
December 2006.................................................       9.807033
January 2007..................................................       7.344959
February 2007.................................................       4.947998
March 2007....................................................       2.627924
April 2007....................................................       0.409319
May 2007
 and thereafter...............................................       0.000000
</TABLE>
 
- ------------------------------
(1) Because the  Class A-16  and  Class A-17  Certificates consist  of  multiple
    Components,  on  any  Distribution  Date  the  respective  percentages  then
    outstanding of  the initial  planned Component  Principal Balances  (as  set
    forth  in the tables) will be different from the respective percentages then
    outstanding of the initial Class A Subclass Principal Balances of such Class
    A-16 or Class A-17 Certificates.
 
                                      S-48
<PAGE>
  PRINCIPAL PAYMENT CHARACTERISTICS OF THE PAC CERTIFICATES, PAC COMPONENTS AND
  COMPANION COMPONENTS
 
    The percentages of the  initial Class A Subclass  Principal Balances of  the
PAC  Certificates and  Component Principal  Balances of  the PAC  Components set
forth in the tables above were calculated using the assumptions described in the
second paragraph on  page S-71 herein.  Based on such  assumptions, the Class  A
Subclass  Principal Balance  of each Subclass  of PAC  Certificates or Component
Principal Balance of each  PAC Component would be  reduced to the percentage  of
its  initial Class A  Subclass Principal Balance  or initial Component Principal
Balance indicated in the tables above for each Distribution Date if  prepayments
on  the Mortgage Loans occur at any CONSTANT rate between approximately 160% SPA
and approximately 350% SPA with respect to the PAC I Certificates and the PAC  I
Components,  between  approximately 125%  SPA  and approximately  350%  SPA with
respect to the  Class A-6 Certificates  and between approximately  225% SPA  and
approximately  290% SPA with respect  to the PAC II  Certificates and the PAC II
Component. However,  IT  IS  HIGHLY  UNLIKELY THAT  PRINCIPAL  PAYMENTS  ON  THE
MORTGAGE  LOANS WILL OCCUR AT ANY CONSTANT  RATE OR THAT THE MORTGAGE LOANS WILL
PREPAY AT THE  SAME RATE.  In addition, even  if principal  prepayments were  to
occur  at a constant rate, there  may be differences between the characteristics
of the mortgage loans ultimately included  in the Trust Estate and the  Mortgage
Loans  which are expected to be  included, as described herein. Therefore, there
can be no assurance that the Class A Subclass Principal Balance of any  Subclass
of  PAC Certificates  or the Component  Principal Balance of  any PAC Component,
after the application of the distributions to be made on any Distribution  Date,
will be equal to the applicable percentage of initial Class A Subclass Principal
Balance  or  initial  Component  Principal Balance  for  such  Distribution Date
specified in the tables above.
 
    As  discussed  under  "Prepayment  and  Yield  Considerations"  herein,  the
weighted  average  life of  a Subclass  of  Class A  Certificates refers  to the
average amount  of time  that will  elapse from  the date  of issuance  of  such
Subclass  until  each  dollar in  reduction  of  the principal  balance  of such
Subclass is distributed to investors. The weighted average life of each Subclass
of Class A Certificates  will be affected,  to varying degrees,  by the rate  of
principal  payments (including prepayments) of the Mortgage Loans, the timing of
changes in  such rate  of payment,  the priority  sequence of  distributions  in
reduction  of  principal of  the  Class A  Certificates  and the  timing  of the
reductions of the principal balances of  PAC Certificates and PAC Components  to
their  planned principal  balances. The  interaction of  these factors  may have
different effects on the Subclasses of  Class A Certificates, including the  PAC
Certificates  or Subclasses comprised of PAC  Components, and the effects on any
Subclass may vary at different times during the life of such Subclass.  Further,
to  the  extent that  the  purchase prices  paid by  investors  for the  Class A
Certificates, including  the PAC  Certificates or  Subclasses comprised  of  PAC
Components,   represent  discounts  or  premiums  to  their  respective  initial
principal  balances,  variability  in  the   weighted  average  lives  of   such
Certificates  could result in variability in the related yields to maturity. See
"Prepayment and Yield Considerations" herein.
 
    The weighted  average  lives  of  the Subclasses  of  PAC  Certificates  and
Subclasses  comprised  of PAC  Components will  vary under  different prepayment
scenarios. To the extent that principal prepayments are made at a constant  rate
that is slower than approximately 160% SPA in the case of the PAC I Certificates
and  PAC I  Components, slower than  approximately 125%  SPA in the  case of the
Class A-6 Certificates and slower than approximately 225% SPA in the case of the
PAC II Certificates and the PAC II  Component, the weighted average life of  any
Subclass  of PAC  Certificates or Subclass  comprised of PAC  Components, to the
extent of their PAC Components,  may be extended and, in  the case of the  Class
A-13  Certificates,  may  be extended  significantly.  To the  extent  that such
principal  prepayments  are  made  at  a  constant  rate  that  is  higher  than
approximately  350% SPA in the case of  the PAC I Certificates, PAC I Components
and Class A-6 Certificates and higher than approximately 290% SPA in the case of
the PAC II Certificates and the PAC  II Component, the weighted average life  of
any  Subclass of PAC Certificates or Subclass with PAC Components, to the extent
of their PAC Components, may be reduced.
 
                                      S-49
<PAGE>
    The extent to which the planned principal balances will be achieved and  the
sensitivity  of the PAC Certificates and PAC Components to principal prepayments
on the Mortgage Loans will depend in  part upon the period of time during  which
the  Companion  Components remain  outstanding, and  in  the case  of the  PAC I
Certificates, PAC I Components  and Class A-6 Certificates,  upon the period  of
time  during  which  the  PAC  II  Certificates  and  PAC  II  Component  remain
outstanding. On  each Distribution  Date, the  excess of  the Adjusted  Class  A
Principal  Distribution Amount over the PAC Principal Amounts ("Excess Principal
Payments") for such Distribution Date will be distributed first to the Companion
Components and then to the PAC II Certificates and PAC II Component before being
distributed  to  the  PAC  I  Certificates,  PAC  I  Components  and  Class  A-6
Certificates,   in  accordance  with  the   priorities  set  forth  above  under
"--Allocation  of  Amount  to  be  Distributed  to  the  Class  A  and  Class  M
Certificates".  As such, and in accordance with the priorities described herein,
the Companion Components support the PAC  II Certificates and PAC II  Component,
and  the Companion Components, PAC II  Certificates and PAC II Component support
the PAC I Certificates,  PAC I Components and  Class A-6 Certificates.  However,
under  certain relatively fast  prepayment scenarios, one  or more Subclasses of
PAC Certificates  or PAC  Components may  continue to  be outstanding  when  the
Subclasses  of  Class  A  Certificates  which  support  such  Subclasses  of PAC
Certificates  or  PAC   Components  are  no   longer  outstanding.  Under   such
circumstances, the entire Adjusted Class A Principal Distribution Amount will be
applied  to the remaining PAC Certificates and PAC Components in accordance with
the priorities  described  herein.  Thus,  when  the  principal  amount  of  the
Companion Components are reduced to zero, the rate of distributions in reduction
of  principal of any outstanding  Subclass of PAC II  Certificates or the PAC II
Component will, in accordance with the priorities set forth herein, become  more
sensitive  to the rate  of prepayment on  the Mortgage Loans.  Further, when the
principal amount of the PAC II Certificates and PAC II Component are reduced  to
zero,  the rate  of distribution  in reduction  of principal  of any outstanding
Subclass of PAC I Certificates, PAC I Components and the Class A-6  Certificates
will,  in accordance with the priorities set forth herein, become more sensitive
to the  rate of  prepayment on  the Mortgage  Loans. Conversely,  under  certain
relatively   slow  prepayment   scenarios,  the   Adjusted  Class   A  Principal
Distribution Amount may not be sufficient  to pay the PAC Principal Amounts  for
all  Subclasses of PAC  Certificates and PAC Components  on a given Distribution
Date. In such cases, the Adjusted Class A Principal Distribution Amount for each
subsequent Distribution Date will be  applied in accordance with the  priorities
described  herein until the outstanding principal  balance of each such Subclass
of PAC Certificates or PAC Components  equals its planned principal balance  and
the  weighted average life of  any Subclass of PAC  Certificates or any Subclass
having a  PAC Component  that did  not receive  its PAC  Principal Amount  on  a
Distribution Date may be extended accordingly.
 
    Because  any Excess  Principal Payments  for any  Distribution Date  will be
distributed to  Certificateholders on  such Distribution  Date, the  ability  to
distribute  the  PAC Principal  Amounts  on any  Distribution  Date will  not be
enhanced by the  averaging of  high and low  principal prepayment  rates on  the
Mortgage Loans over several Distribution Dates, as might be the case if any such
Excess  Principal Payments were held for  future application and not distributed
monthly. There is no assurance that distributions in reduction of (i) the  Class
A  Subclass Principal Balance  of any Subclass of  PAC Certificates or Component
Principal Balance of any  PAC Component (other than  the Class A-1  Certificates
and  the Class A-2  Certificates, the Class  A-16 PAC I  Component and the Class
A-10 Certificates)  will  not  commence significantly  earlier  than  the  first
Distribution  Dates shown  in the  above tables  relating to  such Subclasses or
Component, (ii) the Class  A Subclass Principal Balance  of any Subclass of  PAC
Certificates or Component Principal Balance of any PAC Component (other than the
Class  A-1 Certificates  and the  Class A-2 Certificates,  the Class  A-16 PAC I
Component and the Class A-10 Certificates) will not commence significantly later
than the first  Distribution Dates shown  in the above  tables relating to  such
Subclasses  or PAC Components or (iii) the Class A Subclass Principal Balance of
any Subclass  of PAC  Certificates or  Component Principal  Balance of  any  PAC
Component  will not  be reduced to  zero significantly  earlier or significantly
later than the last Distribution Dates shown in the above tables.
 
                                      S-50
<PAGE>
ADDITIONAL RIGHTS OF THE CLASS A-R AND CLASS A-LR CERTIFICATEHOLDERS
 
    The Class A-R  and Class A-LR  Certificates will remain  outstanding for  as
long  as the Trust Estate shall exist, whether or not they are receiving current
distributions of principal or interest. The  holders of the Class A-R and  Class
A-LR  Certificates will  be entitled  to receive  the proceeds  of the remaining
assets of the Upper-Tier  REMIC and Lower-Tier REMIC,  respectively, if any,  on
the   final  Distribution  Date  for  the  Series  1992-26  Certificates,  after
distributions in  respect of  any  accrued but  unpaid  interest on  the  Series
1992-26  Certificates and after distributions  in reduction of principal balance
have reduced the principal balances of the Series 1992-26 Certificates to  zero.
It  is not anticipated that there will be  any assets remaining in the REMICs on
the final  Distribution Date  following  the distributions  of interest  and  in
reduction  of principal balance made on  the Series 1992-26 Certificates on such
date.
 
    In addition,  the Class  A-LR  Certificateholder will  be entitled  on  each
Distribution  Date to receive  any Pool Distribution  Amount remaining after all
distributions pursuant to the Pool Distribution Amount Allocation have been made
and any  Net Foreclosure  Profits after  the Servicer  has been  reimbursed  for
unpaid  Servicing  Fees. See  "Servicing of  the Mortgage  Loans--Fixed Retained
Yield, Servicing Compensation and Payment  of Expenses" in the Prospectus.  "Net
Foreclosure  Profits" means, with respect to  any Distribution Date, the excess,
if any, of (i) the aggregate profits  on Liquidated Loans in the related  period
with  respect  to which  net Liquidation  Proceeds  exceed the  unpaid principal
balance thereof plus accrued interest thereon at the Mortgage Interest Rate over
(ii) the aggregate  realized losses on  Liquidated Loans in  the related  period
with  respect  to  which  net  Liquidation Proceeds  are  less  than  the unpaid
principal balance thereof plus accrued interest thereon at the Mortgage Interest
Rate. It is not anticipated that there will be any such Net Foreclosure  Profits
or such undistributed Pool Distribution Amounts.
 
PERIODIC ADVANCES
 
    If, on any Determination Date, payments of principal and interest due on any
Mortgage  Loan  in  the Trust  Estate  on the  related  Due Date  have  not been
received, the Servicer  will be obligated  to advance on  or before the  related
Distribution  Date for the benefit of holders of the Series 1992-26 Certificates
an amount in cash equal to all delinquent payments of principal and interest due
on each  Mortgage  Loan in  the  Trust Estate  (with  interest adjusted  to  the
applicable  Net Mortgage Interest Rate) not previously advanced, but only to the
extent that the Servicer  believes that such amounts  will be recoverable by  it
from liquidation proceeds or other recoveries in respect of the related Mortgage
Loan.
 
    The  Pooling and Servicing  Agreement provides that any  advance of the kind
described in the preceding  paragraph may be reimbursed  to the Servicer at  any
time from funds available in the Certificate Account to the extent that (i) such
funds  represent receipts on, or  liquidation, insurance, purchase or repurchase
proceeds in respect of, the Mortgage Loans to which the advance relates or  (ii)
the Servicer has determined in good faith that it will be unable to recover such
advance from funds of the type referred to in clause (i) above.
 
    In the event that, at some future date, Moody's should revise its assessment
of  the ability  of the Servicer  to make  Periodic Advances, and  so notify the
Trustee in  writing (the  date on  which such  notification is  received by  the
Servicer being referred to herein as the "Reserve Fund Trigger Date"), a reserve
fund (the "Reserve Fund") will be established by the Servicer in accordance with
the provisions of the Pooling and Servicing Agreement to provide limited support
for  the Servicer's obligation to make Periodic Advances, as described above. In
the event that, with respect to  any Distribution Date occurring after the  date
on  which the Reserve  Fund is funded,  the Servicer fails  to make any Periodic
Advance required  to  be  made by  it  pursuant  to the  Pooling  and  Servicing
Agreement,  the Trustee  will cause  to be  withdrawn from  the Reserve  Fund an
advance in an amount equal to the least of (i) the Periodic Advance required  to
be  made by the Servicer  which the Servicer failed to  make, (ii) the excess of
(A) the sum for such  Distribution Date of (x) the  sum of the Class A  Subclass
Interest  Accrual Amounts with respect to each Subclass of Class A Certificates,
(y) the  sum of  the unpaid  Class A  Subclass Interest  Shortfall Amounts  with
respect  to each Subclass  of Class A  Certificates and (z)  the Class A Optimal
Principal Amount (collectively, the "Class A Optimal Amount") over (B) the  Pool
Distribution Amount (determined
 
                                      S-51
<PAGE>
without  regard to any advance from the  Reserve Fund on such Distribution Date)
and (iii) an  amount equal  to the  amount then in  the Reserve  Fund, less  any
reinvestment income or gain to be released from the Reserve Fund as described in
the  following  paragraph (the  "Reserve  Fund Available  Advance  Amount"). The
Pooling and Servicing Agreement will provide that any such advance made from the
Reserve Fund will be reimbursed  to the Reserve Fund if  and to the extent  that
such  reimbursement would be permitted under the Pooling and Servicing Agreement
if such advance had been  a Periodic Advance made  by the Servicer. The  Reserve
Fund, if established, will not be a part of the Trust Estate.
 
    The  Reserve  Fund, if  required,  will be  established  as a  trust account
pursuant to a depository agreement (the  "Depository Agreement") by and among  a
depository  institution (the  "Reserve Fund  Depository"), the  Servicer and the
Trustee and will be held by  the Reserve Fund Depository. Following the  Reserve
Fund  Trigger Date, should such  date occur, the Reserve  Fund will be funded by
the deposit with the Reserve Fund Depository  of an amount in cash equal to  (i)
0.25% of the outstanding principal balance of the Mortgage Loans as of the close
of  business on  the Reserve  Fund Trigger  Date or  (ii) such  lesser amount as
Moody's may specify (the "Reserve Fund Required Amount"). After the Reserve Fund
Required Amount has been deposited in the Reserve Fund, no person will have  any
further  obligation to deposit  amounts in the  Reserve Fund or  to maintain the
amounts in the Reserve Fund at that level even if at some future date amounts in
the Reserve Fund  fall below the  Reserve Fund  Required Amount as  a result  of
unreimbursed  advances made  from the Reserve  Fund or  withdrawals permitted by
Moody's. The amounts  in the Reserve  Fund may be  invested in investments  that
will  not  cause the  then current  ratings of  the Class  A Certificates  to be
lowered by Moody's,  and reinvestment  income or gain  will be  released to  the
Servicer  (or its  designee) on  each Distribution  Date free  and clear  of any
interest of the Trustee, the Reserve Fund Depository or any other person.  After
the  Class A  Principal Balance  has been  reduced to  zero, any  amounts in the
Reserve Fund will be released to the Servicer (or its designee).
 
    An alternative method of  limited support for  the Servicer's obligation  to
make  Periodic Advances may be provided, if  such change does not cause the then
current ratings of the Class A Certificates to be lowered by Moody's.
 
RESTRICTIONS ON TRANSFER OF THE CLASS A-R, CLASS A-LR AND CLASS M CERTIFICATES
 
    The Class A-R and Class A-LR  Certificates will be subject to the  following
restrictions  on transfer,  and the Class  A-R and Class  A-LR Certificates will
contain a legend describing such restrictions.
 
    The Technical  and  Miscellaneous Revenue  Act  of 1988  amended  the  REMIC
provisions  of the Code  to impose a  tax on transfers  of residual interests to
Disqualified Organizations (as  defined in the  Prospectus). These changes  will
apply  to transferors  of the  Class A-R  or Class  A-LR Certificate  as well as
holders of  the  Class A-R  or  Class  A-LR Certificate  that  are  Pass-Through
Entities  (as defined  in the Prospectus).  The Pooling  and Servicing Agreement
will provide that no legal or beneficial interest in the Class A-R or Class A-LR
Certificate may be transferred to or registered in the name of any person unless
(i) the proposed purchaser  provides to the Trustee  an affidavit to the  effect
that,  among other items, such transferee is not a Disqualified Organization, is
not purchasing  such Class  A-R or  Class A-LR  Certificate as  an agent  for  a
Disqualified  Organization  (I.E.,  as  a broker,  nominee,  or  other middleman
thereof) and is not an entity (a "Book-Entry Nominee") that holds REMIC residual
securities as  nominee  to  facilitate  the clearance  and  settlement  of  such
securities  through electronic  book-entry changes in  accounts of participating
organizations and (ii) the transferor states  in writing to the Trustee that  it
has  no actual knowledge  that such affidavit is  false. Further, such affidavit
requires the transferee  to affirm that  it understands that  it must take  into
account  the taxable income relating to the Class A-R or Class A-LR Certificate,
that it has no intention to impede the assessment or collection of any  federal,
state  or local  income taxes legally  required to  be paid with  respect to the
Class A-R or Class A-LR Certificate and that it will not transfer the Class  A-R
or  Class A-LR Certificate to any person or entity that it has reason to believe
has the intention to impede the assessment or collection of such taxes.
 
    In  addition,  neither  the  Class  A-R  Certificate  nor  the  Class   A-LR
Certificate may be purchased by or transferred to any person that is not a "U.S.
Person," unless (i) such person holds the Class A-R or Class A-LR Certificate in
connection  with the conduct of a trade or business within the United States and
 
                                      S-52
<PAGE>
furnishes the  transferor and  the Trustee  with an  effective Internal  Revenue
Service Form 4224 or (ii) the transferee delivers to both the transferor and the
Trustee  an opinion of  a nationally recognized  tax counsel to  the effect that
such transfer  is  in accordance  with  the requirements  of  the Code  and  the
regulations  promulgated thereunder and  that such transfer of  the Class A-R or
Class A-LR Certificate will not be disregarded for federal income tax  purposes.
The  term "U.S.  Person" means  a citizen  or resident  of the  United States, a
corporation, partnership or other  entity created or organized  in or under  the
laws  of the United States or any political subdivision thereof, or an estate or
trust that is subject to U.S. federal income tax regardless of the source of its
income.
 
    The Pooling  and Servicing  Agreement  will provide  that any  attempted  or
purported  transfer in violation of these transfer restrictions will be null and
void and will  vest no  rights in any  purported transferee.  Any transferor  or
agent  to whom the Trustee provides information as to any applicable tax imposed
on such transferor or  agent may be  required to bear the  cost of computing  or
providing such information. See "Certain Federal Income Tax
Consequences--Federal  Income Tax Consequences  for REMIC Certificates--Taxation
of Residual Certificates--Restrictions on Transfer of the Residual Certificates:
Disqualified  Organizations",  "Restrictions   on  Transfer   of  the   Residual
Certificates:  Non-Economic Residual Interests" and "Restrictions on Transfer of
the Residual Certificates: Foreign Investors" in the Prospectus.
 
    Neither the Class  A-R Certificate  nor the  Class A-LR  Certificate may  be
purchased  by or transferred to an ERISA  Plan. Because the Class M Certificates
are subordinated to the Class A  Certificates, the Class M Certificates may  not
be  purchased by or transferred to an ERISA  Plan except upon the delivery of an
opinion of counsel as described herein under "ERISA Considerations." See  "ERISA
Considerations" herein and in the Prospectus.
 
REPORTS
 
    In  addition to the applicable information  specified in the Prospectus, the
Servicer will include in the statement delivered to holders of Class A and Class
M Certificates with respect to each Distribution Date the following information:
(i) the  amount  of such  distribution  allocable  to interest,  the  amount  of
interest  currently distributable on the Class  A Certificates allocated to each
Subclass and  to  the  Class  M Certificates,  any  Class  A  Subclass  Interest
Shortfall  Amount arising with respect to each  Subclass or any Class M Interest
Shortfall Amount  on  such  Distribution  Date, any  remaining  unpaid  Class  A
Subclass  Interest  Shortfall  Amount  with respect  to  each  Subclass,  or any
remaining unpaid Class M Interest Shortfall Amount, after giving effect to  such
distribution and any Non-Supported Interest Shortfall or the interest portion of
Realized  Losses  allocable  to such  Subclass  or  Class with  respect  to such
Distribution Date, (ii) the amount of such distribution allocable to  principal,
(iii)  the Class A Principal Balance, the Class M Principal Balance, the Class A
Subclass Principal Balance of each Subclass of Class A Certificates after giving
effect to the  distribution of principal  and the allocation  of Excess  Special
Hazard  Losses, Excess Fraud  Losses and Excess Bankruptcy  Losses, if any, (iv)
the Adjusted  Pool  Amount and  the  Pool  Scheduled Principal  Balance  of  the
Mortgage  Loans for such Distribution Date, (v) the Class A Percentage and Class
M Percentage for  the following Distribution  Date, and (vi)  the amount of  the
remaining  Special Hazard Loss Amount, the  Fraud Loss Amount and the Bankruptcy
Loss Amount as of the close of business on such Distribution Date. The statement
delivered to holders  of the Class  A-11 and Class  A-12 Certificates will  also
include  the  applicable Pass-Through  Rates with  respect to  such Distribution
Date. The statement  delivered to holders  of the Class  A-18 Certificates  will
also  include  the  Class A-18  Notional  Amount  and the  weighted  average Net
Mortgage Interest Rate  of the  Mortgage Loans applicable  to such  Distribution
Date  minus  7.50%. The  statement delivered  to  the holder  of the  Class A-LR
Certificate will also include the Class A-LR Notional Amount. See "Servicing  of
the Mortgage Loans--Reports to Certificateholders" in the Prospectus.
 
    Copies  of the foregoing  reports are available upon  written request to the
Trustee  at  the  Corporate  Trust  Office.  See  "The  Pooling  and   Servicing
Agreement--Trustee" herein.
 
                                      S-53
<PAGE>
SUBORDINATION OF CLASS M AND CLASS B CERTIFICATES
 
    The   rights  of  the  holders  of  the  Class  M  Certificates  to  receive
distributions with respect  to the Mortgage  Loans in the  Trust Estate will  be
subordinated  to such rights of the holders  of the Class A Certificates and the
rights of the holders of the Class B Certificates to receive distributions  with
respect  to the Mortgage Loans in the  Trust Estate will be subordinated to such
rights of the holders of the Class A and Class M Certificates, all to the extent
described below. This  subordination is  intended to enhance  the likelihood  of
timely  receipt by the holders of the Class A Certificates (to the extent of the
subordination of the Class M  and Class B Certificates)  and the holders of  the
Class  M  Certificates  (to the  extent  of  the subordination  of  the  Class B
Certificates) of the full amount of their scheduled monthly payments of interest
and principal and  to afford the  holders of  the Class A  Certificates (to  the
extent  of the subordination  of the Class  M and Class  B Certificates) and the
holders of the Class M Certificates (to  the extent of the subordination of  the
Class  B  Certificates)  protection  against  Realized  Losses,  as  more  fully
described below. If Realized Losses  exceed the credit support provided  through
subordination  to the  Class A  and Class  M Certificates  or if  Excess Special
Hazard Losses, Excess Fraud Losses or  Excess Bankruptcy Losses occur, all or  a
portion of such losses will be borne by the Class A and Class M Certificates.
 
    The  protection afforded to the holders of  Class A Certificates by means of
the subordination feature will be accomplished by the preferential right of such
holders to receive, prior to any distribution being made on a Distribution  Date
in respect of the Class M and Class B Certificates, the amounts of principal and
interest due the Class A Certificateholders on each Distribution Date out of the
Pool  Distribution Amount with  respect to such  date and, if  necessary, by the
right of such holders to receive future distributions on the Mortgage Loans that
would otherwise  have  been payable  to  the holders  of  Class M  and  Class  B
Certificates.  The application  of this  subordination to  cover Realized Losses
experienced in periods  prior to  the periods  in which  a Subclass  of Class  A
Certificates is entitled to distributions in reduction of principal balance will
decrease the protection provided by the subordination to any such Subclass.
 
    The  protection afforded to the holders of  Class M Certificates by means of
the subordination feature will be accomplished by the preferential right of such
holders to receive, prior to any distribution being made on a Distribution  Date
in  respect of the Class  B Certificates, the amounts  of principal and interest
due the  Class M  Certificateholders on  each Distribution  Date from  the  Pool
Distribution  Amount with respect  to such date (after  all required payments on
the Class A Certificates have been made) and, if necessary, by the right of such
holders to  receive  future  distributions  on the  Mortgage  Loans  that  would
otherwise have been payable to the holders of the Class B Certificates.
 
    The Class B Certificates will be entitled, on each Distribution Date, to the
remaining  portion, if  any, of the  applicable Pool  Distribution Amount, after
payment of the Class A Distribution  Amount and the Class M Distribution  Amount
for  such date. Amounts so distributed to Class B Certificateholders will not be
available to cover  delinquencies or  Realized Losses in  respect of  subsequent
Distribution Dates.
 
  ALLOCATION OF LOSSES
 
    Realized  Losses  (other than  Excess  Special Hazard  Losses,  Excess Fraud
Losses or Excess Bankruptcy Losses) will not be allocated to the holders of  the
Class A Certificates until the date on which the amount of principal payments on
the  Mortgage Loans  to which the  holders of the  Subordinated Certificates are
entitled has been reduced to zero as a result of the allocation of losses to the
Subordinated Certificates, I.E., the date  on which the Subordinated  Percentage
has  been reduced  to zero  (the "Cross-Over  Date"). Prior  to such  time, such
Realized  Losses  will  be  allocated  first  to  the  subclasses  of  Class   B
Certificates  sequentially in their  reverse numerical order,  until the Class B
Subclass Principal Balances of each such subclass have been reduced to zero, and
then to the Class M  Certificates until the Class  M Principal Balance has  been
reduced to zero.
 
    The  allocation of the  principal portion of  a Realized Loss  (other than a
Debt Service Reduction, Excess Special Hazard Loss, Excess Fraud Loss or  Excess
Bankruptcy Loss) will be effected through
 
                                      S-54
<PAGE>
the   adjustment  of  the  principal  balance  of  the  most  subordinate  Class
then-outstanding in such amount as is necessary to cause the sum of the Class  A
Subclass  Principal  Balances, the  Class M  Principal Balance  and the  Class B
Subclass Principal Balances to equal the Adjusted Pool Amount.
 
    Allocations to the Class M Certificates  or Class B Certificates of (i)  the
principal  portion  of Debt  Service Reductions,  (ii)  the interest  portion of
Realized Losses (other than  Excess Special Hazard  Losses, Excess Fraud  Losses
and  Excess  Bankruptcy Losses),  (iii) any  interest shortfalls  resulting from
delinquencies for which  the Servicer  does not  advance and  (iv) any  interest
shortfalls  resulting  from the  timing of  partial principal  prepayments, will
result  from   the   priority   of   distributions  first   to   the   Class   A
Certificateholders  and  then  to the  Class  M Certificateholders  of  the Pool
Distribution Amount as described above under "--Distributions."
 
    The principal  portion  of any  Realized  Loss  occurring on  or  after  the
Cross-Over  Date will be  allocated among the outstanding  Subclasses of Class A
Certificates pro rata in accordance with their then outstanding Class A Subclass
Principal Balances, and among the  outstanding Class A Certificates within  each
Subclass pro rata in accordance with their respective Percentage Interests.
 
    Any  Excess Special Hazard Losses, Excess  Fraud Losses or Excess Bankruptcy
Losses will be  allocated on a  pro rata basis  among the Class  A, Class M  and
Class  B Certificates (any such losses so  allocated to the Class A Certificates
will be allocated among the outstanding  Subclasses of Class A Certificates  pro
rata  in  accordance  with their  then  outstanding Class  A  Subclass Principal
Balances with respect to the principal portion of such losses and their Class  A
Subclass  Interest Accrual Amounts with respect  to the interest portion of such
losses, and among the outstanding Class A Certificates within each Subclass  pro
rata in accordance with their respective Percentage Interests). An allocation of
a  loss on a "pro rata basis" among two or more Classes of Certificates means an
allocation on a pro rata basis to  each such Class of Certificates on the  basis
of  their  then outstanding  principal  balances in  the  case of  the principal
portion of a loss  or based on the  accrued interest thereon in  the case of  an
interest portion of a loss.
 
    The  interest portion of  Excess Special Hazard  Losses, Excess Fraud Losses
and Excess Bankruptcy Losses will be allocated by reducing the applicable  Class
B  Subclass Interest Accrual Amount, Class M  Interest Accrual Amount or Class A
Interest Accrual Amount.
 
    As described above, the Pool  Distribution Amount for any Distribution  Date
will  include  current  receipts  (other than  certain  unscheduled  payments in
respect of principal) from  the Mortgage Loans otherwise  payable to holders  of
the  Class M and  Class B Certificates.  If the Pool  Distribution Amount is not
sufficient to cover the amount of principal payable to the holders of the  Class
A Certificates on a particular Distribution Date (other than any portion thereof
representing  the difference  between the  Class A  Percentage of  the Scheduled
Principal Balances of Liquidated Loans and the Class A Prepayment Percentage  of
such  amounts), then the percentage of  principal payments on the Mortgage Loans
to which the holders  of the Class  A Certificates will  be entitled (I.E.,  the
Class   A  Percentage)  on  and  after   the  next  Distribution  Date  will  be
proportionately  increased,  thereby  reducing,   as  a  relative  matter,   the
respective  interest of the Class M and  Class B Certificates in future payments
of principal on the Mortgage Loans in  the Trust Estate. Such a shortfall  could
occur,  for example, if a  considerable number of Mortgage  Loans were to become
Liquidated Loans in a particular month.
 
    Special Hazard Losses will be allocated solely to the Class B  Certificates,
or  following the reduction of the Class  B Principal Balance to zero, solely to
the Class M Certificates, but only prior to the Special Hazard Termination Date.
The "Special Hazard Termination Date" will  be the date on which Special  Hazard
Losses  exceed the  Special Hazard Loss  Amount (or, if  earlier, the Cross-Over
Date). Upon initial issuance  of the Series  1992-26 Certificates, the  "Special
Hazard  Loss Amount" with  respect thereto will be  equal to approximately 1.95%
(approximately $6,858,252) of  the Cut-Off Date  Aggregate Principal Balance  of
the  Mortgage Loans. As of any Distribution Date, the Special Hazard Loss Amount
will equal  the initial  Special Hazard  Loss Amount  less the  sum of  (A)  any
Special  Hazard Losses allocated solely  to the Class B  or Class M Certificates
and (B) the Adjustment  Amount. The "Adjustment Amount"  on each anniversary  of
the  Cut-Off Date  will be  equal to the  amount, if  any, by  which the Special
Hazard Amount,
 
                                      S-55
<PAGE>
without giving  effect  to the  deduction  of  the Adjustment  Amount  for  such
anniversary,  exceeds the greater of  (i) 1.00% (or, if  greater than 1.00%, the
highest percentage of Mortgage Loans by principal balance in any California  zip
code)  times the aggregate principal  balance of all the  Mortgage Loans on such
anniversary and (ii)  twice the principal  balance of the  single Mortgage  Loan
having  the largest  principal balance. Special  Hazard Losses in  excess of the
Special Hazard Loss Amount are "Excess Special Hazard Losses".
 
    Fraud Losses  will be  allocated  solely to  the  Class B  Certificates,  or
following  the reduction of the Class B Principal Balance to zero, solely to the
Class M Certificates, but only prior to the Fraud Coverage Termination Date. The
"Fraud Coverage Termination Date" will be the date on which Fraud Losses  exceed
the  Fraud  Loss Amount  (or,  if earlier,  the  Cross-Over Date).  Upon initial
issuance of  the  Series 1992-26  Certificates,  the "Fraud  Loss  Amount"  with
respect  thereto will be equal to approximately 2.00% (approximately $7,034,105)
of the Cut-Off Date Aggregate Principal  Balance of the Mortgage Loans. On  each
Distribution  Date thereafter, the Fraud Loss Amount will equal (X) prior to the
first anniversary of the Cut-Off Date an amount equal to the initial Fraud  Loss
Amount  minus the aggregate amount of Fraud Losses allocated solely to the Class
B or the Class M Certificates up to the related Determination Date, and (Y) from
the first through fifth anniversary of the Cut-Off Date, an amount equal to  (1)
the lesser of (a) the Fraud Loss Amount as of the most recent anniversary of the
Cut-Off  Date and  (b) 1.00% of  the aggregate  principal balance of  all of the
Mortgage Loans as of the most recent  anniversary of the Cut-Off Date minus  (2)
the  aggregate  amounts  allocated  solely  to  the  Class  B  or  the  Class  M
Certificates with respect to Fraud Losses  since the most recent anniversary  of
the  Cut-Off  Date  up  to  the  related  Determination  Date.  After  the fifth
anniversary of  the  Cut-Off  Date, the  Fraud  Loss  Amount will  be  zero  and
thereafter  any Fraud Losses will be shared pro  rata among the Class A, Class M
and Class B Certificates. Fraud  Losses in excess of  the Fraud Loss Amount  are
"Excess Fraud Losses."
 
    Bankruptcy  Losses will be allocated solely  to the Class B Certificates, or
following the reduction of the Class B Principal Balance to zero, solely to  the
Class  M Certificates,  but only  prior to  the Bankruptcy  Coverage Termination
Date. The  "Bankruptcy Coverage  Termination Date"  will be  the date  on  which
Bankruptcy  Losses  exceed  the  Bankruptcy Loss  Amount  (or,  if  earlier, the
Cross-Over Date). Upon initial issuance of the Series 1992-26 Certificates,  the
"Bankruptcy  Loss Amount"  with respect thereto  will be  equal to approximately
0.16% (approximately $571,404) of the  Cut-Off Date Aggregate Principal  Balance
of  the  Mortgage  Loans.  As  of  any  Distribution  Date  prior  to  the first
anniversary of  the Cut-Off  Date, the  Bankruptcy Loss  Amount will  equal  the
initial  Bankruptcy Loss Amount minus the  aggregate amount of Bankruptcy Losses
allocated solely to  the Class  B and  Class M  Certificates up  to the  related
Determination  Date.  As  of  any  Distribution  Date  on  or  after  the  first
anniversary of  the Cut-Off  Date, the  Bankruptcy Loss  Amount will  equal  the
excess,  if any, of (1) the  lesser of (a) the Bankruptcy  Loss Amount as of the
business day next preceding the most recent anniversary of the Cut-Off Date  and
(b)  an amount  calculated pursuant  to the terms  of the  Pooling and Servicing
Agreement, which  amount as  calculated  will provide  for  a reduction  in  the
Bankruptcy  Loss  Amount, over  (2) the  aggregate  amount of  Bankruptcy Losses
allocated solely to the Class B Certificates or Class M Certificates since  such
anniversary.  The  Bankruptcy  Loss  Amount  and  the  related  coverage  levels
described above  may  be reduced  or  modified upon  written  confirmation  from
Moody's  and Fitch that such reduction or modification will not adversely affect
the then-current ratings  assigned to the  Class A and  Class M Certificates  by
Moody's  and Fitch.  Such a reduction  or modification may  adversely affect the
coverage provided by subordination with respect to Bankruptcy Losses. Bankruptcy
Losses in excess of the Bankruptcy Loss Amount are "Excess Bankruptcy Losses."
 
    Notwithstanding the foregoing, the provisions relating to subordination will
not be applicable in connection with a  Bankruptcy Loss so long as the  Servicer
has notified the Trustee in writing that the Servicer is diligently pursuing any
remedies  that may exist  in connection with  the representations and warranties
made regarding the related Mortgage Loan and when (A) the related Mortgage  Loan
is  not in default with regard to  the payments due thereunder or (B) delinquent
payments of  principal and  interest under  the related  Mortgage Loan  and  any
premiums  on any  applicable Standard  Hazard Insurance  Policy and  any related
escrow payments in respect of such Mortgage Loan are being advanced on a current
basis by the Servicer, in either case without giving effect to any Debt  Service
Reduction.
 
                                      S-56
<PAGE>
                      DESCRIPTION OF THE MORTGAGE LOANS(1)
 
    The Mortgage Loans to be included in the Trust Estate will be fixed interest
rate,   conventional,  monthly  pay,  fully  amortizing,  one-  to  four-family,
residential first mortgage  loans originated  or acquired  by PHMC  for its  own
account  or for  the account  of an  affiliate having  original terms  to stated
maturity of approximately 15  years, including loans  secured by shares  ("Co-op
Shares")  issued by private non-profit housing corporations ("Cooperatives") and
the related proprietary leases or occupancy agreements granting exclusive rights
to occupy specified units  in such Cooperatives'  buildings. The Mortgage  Loans
are  expected to  include 1,260  promissory notes,  to have  an aggregate unpaid
principal balance as of the Cut-Off Date (the "Cut-Off Date Aggregate  Principal
Balance")  of  approximately $351,705,239,  to be  secured  by first  liens (the
"Mortgages") on one- to four-family residential properties or Co-op Shares  (the
"Mortgaged  Properties") and  to have  the additional  characteristics described
below and in the Prospectus.
 
    No Mortgage Loan is a Buy-Down Loan. See "The Trust Estates--Mortgage Loans"
in the Prospectus.
 
    Each of the Mortgage Loans is subject to a due-on-sale clause. See  "Certain
Legal  Aspects of the  Mortgage Loans--'Due-on-Sale' Clauses"  and "Servicing of
the  Mortgage  Loans--Enforcement  of  Due-on-Sale  Clauses;  Realization   Upon
Defaulted Mortgage Loans" in the Prospectus.
 
    As  of the Cut-Off  Date, each Mortgage  Loan is expected  to have an unpaid
principal balance  of not  less than  $28,400  or more  than $997,217,  and  the
average  unpaid  principal  balance of  the  Mortgage  Loans is  expected  to be
approximately $279,131. The latest stated maturity  date of any of the  Mortgage
Loans  is expected to be  August 1, 2007; however, the  actual date on which any
Mortgage Loan is paid in full may  be earlier than the stated maturity date  due
to  unscheduled  payments of  principal. Based  on  information supplied  by the
mortgagors in connection with their  loan applications at origination, 1,189  of
the  Mortgaged Properties, which secure approximately 96.02% of the Cut-Off Date
Aggregate Principal Balance  of the  Mortgage Loans,  are expected  to be  owner
occupied  primary residences  and 71 of  the Mortgaged  Properties, which secure
approximately 3.98%  of the  Cut-Off  Date Aggregate  Principal Balance  of  the
Mortgage  Loans,  are expected  to be  non-owner occupied  or second  homes. See
"PHMC--Mortgage Loan Underwriting" in the Prospectus.
 
    It is expected  that approximately  29 of the  Mortgage Loans,  representing
approximately  2.36%  of the  Cut-Off Date  Aggregate  Principal Balance  of the
Mortgage Loans,  will  be  Mortgage  Loans originated  in  connection  with  the
relocation  of employees of various  corporate employers participating in PHMC's
relocation  program  and  of  employees  of  various  non-participant  employers
("Relocation Mortgage Loans").
 
- ------------------------
(1) The  descriptions in this Prospectus Supplement  of the Trust Estate and the
    properties securing the Mortgage  Loans to be included  in the Trust  Estate
    are  based upon  the expected characteristics  of the Mortgage  Loans at the
    close of  business  on the  Cut-Off  Date,  as adjusted  for  the  scheduled
    principal   payments  due  on  or  before  such  date.  Notwithstanding  the
    foregoing, any of such Mortgage Loans may be excluded from the Trust  Estate
    (i)  as a result  of principal prepayment thereof  in full or  (ii) if, as a
    result of  delinquencies  or  otherwise, the  Seller  otherwise  deems  such
    exclusion  necessary or desirable. In either event, other Mortgage Loans may
    be included in the  Trust Estate. The Seller  believes that the  information
    set  forth  herein  with  respect to  the  expected  characteristics  of the
    Mortgage Loans on the Cut-Off Date is representative of the  characteristics
    as  of the Cut-Off  Date of the Mortgage  Loans to be  included in the Trust
    Estate as it will be constituted at the time the Series 1992-26 Certificates
    are issued, although the Cut-Off Date Aggregate Principal Balance, the range
    of Mortgage Interest Rates and maturities, and certain other characteristics
    of the Mortgage Loans in the Trust Estate may vary. In the event that any of
    the characteristics  as of  the  Cut-Off Date  of  the Mortgage  Loans  that
    constitute  the Trust Estate on  the date of initial  issuance of the Series
    1992-26 Certificates vary  materially from those  described herein,  revised
    information   regarding  the  Mortgage  Loans  will  be  made  available  to
    purchasers of the Class A Certificates, on or before such issuance date, and
    a Current Report on Form 8-K containing such information will be filed  with
    the Securities and Exchange Commission within 15 days following such date.
 
                                      S-57
<PAGE>
    It  is expected  that 6  of the  Mortgage Loans,  representing approximately
0.44% of the  Cut-Off Date Aggregate  Principal Balance of  the Mortgage  Loans,
will   be  Subsidy  Loans.   See  "The  Trust   Estates--  Mortgage  Loans"  and
"PHMC--Mortgage Loan Underwriting" in the Prospectus.
 
    Set  forth  below   is  a   description  of   certain  additional   expected
characteristics  of  the  Mortgage  Loans  as of  the  Cut-Off  Date  (except as
otherwise indicated).
 
                            MORTGAGE INTEREST RATES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
MORTGAGE INTEREST RATES                     LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
7.750%..................................       10     $  3,223,607.95        0.92   %
7.875%..................................       34        8,085,855.96        2.30
8.000%..................................       47       10,252,915.78        2.92
8.125%..................................       80       21,902,228.65        6.23
8.250%..................................      125       37,159,180.94       10.57
8.375%..................................      164       44,106,164.98       12.54
8.500%..................................      196       54,356,642.75       15.46
8.625%..................................      188       61,283,949.73       17.41
8.750%..................................      165       46,336,904.08       13.17
8.875%..................................      142       36,984,093.44       10.52
9.000%..................................       64       15,896,830.43        4.52
9.125%..................................       26        7,417,868.81        2.11
9.250%..................................       12        3,285,090.89        0.93
9.375%..................................        7        1,413,904.43        0.40
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
As of  the Cut-Off  Date, the  weighted average  Mortgage Interest  Rate of  the
Mortgage  Loans  is  expected to  be  approximately  8.539% per  annum.  The Net
Mortgage Interest  Rate of  each Mortgage  Loan will  be equal  to the  Mortgage
Interest  Rate of such Mortgage  Loan minus the Servicing  Fee rate of 0.20% per
annum. As of the Cut-Off Date,  the weighted average Net Mortgage Interest  Rate
of the Mortgage Loans is expected to be approximately 8.339% per annum.
 
                                      S-58
<PAGE>
                      REMAINING MONTHS TO STATED MATURITY
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
REMAINING STATED TERM (MONTHS)              LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
171.....................................        3     $    567,550.61        0.16   %
172.....................................        1          258,925.61        0.07
173.....................................        4        1,057,697.68        0.30
174.....................................       16        3,246,161.23        0.92
175.....................................       27        7,519,660.90        2.14
176.....................................       65       18,550,777.95        5.27
177.....................................      121       34,332,795.10        9.76
178.....................................      365      115,347,899.54       32.80
179.....................................      543      143,673,892.08       40.86
180.....................................      115       27,149,878.12        7.72
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
As  of the Cut-Off Date, the weighted  average remaining term to stated maturity
of the Mortgage Loans is expected to be approximately 178 months.
 
                              YEARS OF ORIGINATION
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
YEAR OF ORIGINATION                         LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
1991....................................        9     $  2,198,830.73        0.63   %
1992....................................    1,251      349,506,408.09       99.37
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
It is expected that the earliest month  and year of origination of any  Mortgage
Loan  was October  1991 and the  latest month  and year of  origination was July
1992.
 
                                      S-59
<PAGE>
                         ORIGINAL LOAN-TO-VALUE RATIOS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
LOAN-TO-VALUE RATIO                         LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
50.00% or less..........................      233     $ 58,020,206.02       16.50   %
50.01-55.00%............................       81       23,816,734.32        6.77
55.01-60.00%............................      103       32,375,031.91        9.21
60.01-65.00%............................       88       26,976,728.93        7.67
65.01-70.00%............................      179       56,488,901.64       16.06
70.01-75.00%............................      269       70,712,995.84       20.11
75.01-80.00%............................      276       74,781,612.06       21.25
80.01-85.00%............................        8        1,960,466.56        0.56
85.01-90.00%............................       23        6,572,561.54        1.87
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
As of  the  Cut-Off  Date,  the minimum  and  maximum  Loan-to-Value  Ratios  at
origination  of  the  Mortgage  Loans  are expected  to  be  15.53%  and 90.00%,
respectively, and the weighted average Loan-to-Value Ratio at origination of the
Mortgage Loans is expected to be approximately 65%. The Loan-to-Value Ratio of a
Mortgage Loan is calculated using the lesser  of (i) the appraised value of  the
related  Mortgaged  Property, as  established by  an  appraisal obtained  by the
originator from an appraiser at the time of origination and (ii) the sale  price
for such property. See "The Trust Estates--Mortgage Loans" in the Prospectus. It
is  expected  that  10 of  the  Mortgage  Loans having  Loan-to-Value  Ratios at
origination in excess of  80%, representing approximately  0.76% of the  Cut-Off
Date  Aggregate Principal Balance of the Mortgage Loans, were originated without
primary mortgage  insurance.  See  "PHMC--Mortgage  Loan  Underwriting"  in  the
Prospectus.
 
                       MORTGAGE LOAN DOCUMENTATION LEVELS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
DOCUMENTATION LEVELS                        LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Full Documentation......................      680     $226,813,266.07       64.49   %
Asset and Income Verification...........       11        2,498,839.94        0.71
Asset and Mortgage Verification.........      300       70,727,712.61       20.11
Income and Mortgage Verification........        1          170,000.00        0.05
Asset Verification......................       91       15,549,487.89        4.42
Income Verification.....................        1          108,415.20        0.03
Mortgage Verification...................      109       25,334,702.94        7.20
Preferred Processing....................       67       10,502,814.17        2.99
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
Documentation levels vary depending upon several factors, including loan amount,
Loan-to-Value Ratio and the type and purpose of the Mortgage Loan. Asset, income
and mortgage verifications were obtained for Mortgage Loans processed with "full
documentation." In the case of "preferred processing," neither asset, income nor
mortgage  verifications were obtained.  However, for all  of the Mortgage Loans,
verification of the borrower's employment, a credit report on the borrower and a
property appraisal were obtained. See "PHMC--Mortgage Loan Underwriting" in  the
Prospectus.
 
                                      S-60
<PAGE>
                   ORIGINAL MORTGAGE LOAN PRINCIPAL BALANCES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                ORIGINAL                  NUMBER OF       UNPAID         AGGREGATE
             MORTGAGE LOAN                MORTGAGE       PRINCIPAL       PRINCIPAL
           PRINCIPAL BALANCE                LOANS         BALANCE         BALANCE
          --------------------            ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Less than or equal to $200,000..........      336     $ 37,786,734.14       10.74   %
$200,001-$250,000.......................      232       53,764,823.09       15.29
$250,001-$300,000.......................      252       69,688,854.36       19.82
$300,001-$350,000.......................      151       49,379,566.23       14.04
$350,001-$400,000.......................       95       36,042,237.43       10.25
$400,001-$450,000.......................       54       23,140,894.20        6.58
$450,001-$500,000.......................       60       28,994,331.17        8.24
$500,001-$550,000.......................       17        8,966,440.89        2.55
$550,001-$600,000.......................       35       20,627,300.94        5.86
$650,001-$700,000.......................        1          671,419.02        0.19
$700,001-$750,000.......................        6        4,284,019.33        1.22
$750,001-$800,000.......................        6        4,674,503.31        1.33
$800,001-$850,000.......................        4        3,277,821.55        0.93
$850,001-$900,000.......................        2        1,768,368.82        0.50
$900,001-$950,000.......................        3        2,709,487.21        0.77
$950,001-$1,000,000.....................        6        5,928,437.13        1.69
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
As  of the Cut-Off  Date, the average  unpaid principal balance  of the Mortgage
Loans is expected  to be  approximately $279,131. As  of the  Cut-Off Date,  the
weighted   average   Loan-to-Value  Ratio   at   origination  and   the  maximum
Loan-to-Value Ratio  at origination  of the  Mortgage Loans  which had  original
principal balances in excess of $600,000 are expected to be approximately 63.53%
and   75.00%,  respectively.   See  "The  Trust   Estates--Mortgage  Loans"  and
"PHMC--Mortgage Loan Underwriting" in the Prospectus.
 
                              MORTGAGED PROPERTIES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
PROPERTY                                    LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Single-family detached..................    1,203     $338,907,857.87       96.36   %
Two- to four-family units...............        6        2,244,681.60        0.64
Condominiums
  High-rise (four stories or more)......       20        4,200,590.09        1.19
  Low-rise (less than four stories).....       27        5,446,599.57        1.55
Planned unit developments...............        1          239,329.17        0.07
Townhouses..............................        1           80,925.69        0.02
Cooperatives............................        2          585,254.83        0.17
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
                                      S-61
<PAGE>
               GEOGRAPHICAL DISTRIBUTION OF MORTGAGED PROPERTIES
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
STATE                                       LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Alabama.................................        6     $    920,391.30        0.26   %
Alaska..................................        1          232,533.51        0.07
Arizona.................................        7        1,532,742.56        0.44
Arkansas................................        2          351,899.75        0.10
California..............................      563      190,875,697.17       54.30
Colorado................................        7        1,767,128.11        0.50
Connecticut.............................       22        6,332,214.89        1.80
Delaware................................        7        2,049,902.16        0.58
District of Columbia....................        2          577,657.15        0.16
Florida.................................       60       12,808,490.20        3.64
Georgia.................................       19        2,595,481.29        0.74
Hawaii..................................        1          383,711.93        0.11
Illinois................................       13        3,470,040.83        0.99
Indiana.................................        1          232,672.69        0.07
Iowa....................................        4          636,435.07        0.18
Louisiana...............................        6          505,278.43        0.14
Maine...................................        1          281,557.09        0.08
Maryland................................       35        9,916,031.58        2.82
Massachusetts...........................       32        7,820,617.58        2.22
Michigan................................        9        1,595,173.56        0.45
Minnesota...............................        4        1,092,539.09        0.31
Missouri................................        2          358,997.61        0.10
Nebraska................................        1          591,589.49        0.17
Nevada..................................       12        3,940,639.85        1.12
New Hampshire...........................        7        1,805,742.56        0.51
New Jersey..............................      122       29,128,775.50        8.28
New Mexico..............................        5        1,060,153.05        0.30
New York................................      153       33,068,928.71        9.40
North Carolina..........................        3          588,541.41        0.17
Ohio....................................       12        3,562,384.75        1.01
Oklahoma................................        2          506,611.72        0.14
Oregon..................................       10        3,095,997.60        0.88
Pennsylvania............................       39        8,166,766.66        2.32
Rhode Island............................        2          278,616.89        0.08
South Carolina..........................        1          149,177.07        0.04
Tennessee...............................        5          536,929.64        0.15
Texas...................................       48       10,403,282.74        2.96
Utah....................................        3          650,968.89        0.19
Vermont.................................        3          540,349.63        0.15
Virginia................................       13        3,311,498.88        0.94
Washington..............................       13        3,861,321.05        1.10
West Virginia...........................        1           70,400.00        0.02
Wisconsin...............................        1           49,369.18        0.01
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
No more than approximately 1.95% of the Cut-Off Date Aggregate Principal Balance
of the Mortgage Loans is expected to be secured by Mortgaged Properties  located
in any one zip code.
 
                                      S-62
<PAGE>
                         ORIGINATORS OF MORTGAGE LOANS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
ORIGINATOR                                  LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
PHMC or Affiliate.......................      388     $ 94,697,235.42       26.93   %
Other Originators.......................      872      257,008,003.40       73.07
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
No  single "Other Originator" is expected to  have accounted for more than 5.00%
of the  Cut-Off Date  Aggregate Principal  Balance of  the Mortgage  Loans.  See
"PHMC--Mortgage Loan Production Sources" in the Prospectus.
 
                           PURPOSES OF MORTGAGE LOANS
 
<TABLE>
<CAPTION>
                                                                       PERCENTAGE OF
                                                         AGGREGATE      CUT-OFF DATE
                                          NUMBER OF       UNPAID         AGGREGATE
                                          MORTGAGE       PRINCIPAL       PRINCIPAL
LOAN PURPOSE                                LOANS         BALANCE         BALANCE
- ----------------------------------------  ---------   ---------------  --------------
<S>                                       <C>         <C>              <C>
Purchase................................      259     $ 59,888,655.52       17.03   %
Rate/Term Refinance.....................      765      227,790,205.63       64.77
Equity Take Out Refinance...............      236       64,026,377.67       18.20
                                          ---------   ---------------     -------
      Total.............................    1,260     $351,705,238.82      100.00   %
                                          ---------   ---------------     -------
                                          ---------   ---------------     -------
</TABLE>
 
In  general,  in the  case of  a  Mortgage Loan  made for  "rate/term" refinance
purposes, substantially  all  of  the proceeds  are  used  to pay  in  full  the
principal balance of a previous mortgage loan of the mortgagor with respect to a
Mortgaged Property and to pay origination and closing costs associated with such
refinancing.  However, in the case of a Mortgage Loan made for "equity take out"
refinance purposes, all or a portion  of the proceeds are generally retained  by
the  mortgagor for uses unrelated to the  Mortgaged Property. The amount of such
proceeds  retained  by  the  mortgagor  may  be  substantial.  See  "The   Trust
Estates--Mortgage   Loans"  and   "PHMC--Mortgage  Loan   Underwriting"  in  the
Prospectus.
 
MANDATORY REPURCHASE OR SUBSTITUTION OF MORTGAGE LOANS
 
    The Seller is required, with respect to Mortgage Loans that are found by the
Trustee to have defective documentation, or  in respect of which the Seller  has
breached  a representation or warranty, either to repurchase such Mortgage Loans
or, if within two years  of the date of initial  issuance of the Series  1992-26
Certificates,  to substitute new  Mortgage Loans therefor.  Any Mortgage Loan so
substituted must, among other things, have an unpaid principal balance equal  to
or  less than the Scheduled Principal Balance  of the Mortgage Loan for which it
is being substituted (after giving effect to the scheduled principal payment due
in the month of substitution on the Mortgage Loan for which a new Mortgage  Loan
is  being  substituted), a  Loan-to-Value Ratio  less  than or  equal to,  and a
Mortgage Interest Rate  no less than,  and no  more than one  percent per  annum
greater  than, that of the Mortgage Loan  for which it is being substituted. Any
such substitution may be made only upon receipt by the Trustee of an opinion  of
counsel   or  other  satisfactory  evidence   that,  among  other  things,  such
substitution will not subject the Trust Estate to tax or cause the Trust  Estate
to  fail to qualify as a REMIC. See "Prepayment and Yield Considerations" herein
and "The  Trust Estates--Mortgage  Loans--Assignment of  Mortgage Loans  to  the
Trustee" in the Prospectus.
 
OPTIONAL REPURCHASE OF DEFAULTED MORTGAGE LOANS
 
    The  Seller may, in  its sole discretion,  repurchase any defaulted Mortgage
Loan from the Trust Estate at a  price equal to the unpaid principal balance  of
such  Mortgage  Loan, together  with accrued  interest  at a  rate equal  to the
Mortgage Interest  Rate  through  the  last  day of  the  month  in  which  such
repurchase occurs. See "The Trust Estates--Mortgage Loans--Optional Repurchases"
in the Prospectus. The
 
                                      S-63
<PAGE>
Servicer  may,  in its  sole  discretion, allow  the  assumption of  a defaulted
Mortgage Loan by a borrower meeting PHMC's underwriting guidelines or  encourage
the  refinancing  of  a  defaulted  Mortgage  Loan.  See  "Prepayment  and Yield
Considerations" herein  and "Servicing  of  the Mortgage  Loans--Enforcement  of
Due-on-Sale   Clauses;  Realization  Upon  Defaulted   Mortgage  Loans"  in  the
Prospectus.
 
              ORIGINATION, DELINQUENCY AND FORECLOSURE EXPERIENCE
 
LOAN ORIGINATION
 
    During the years  ended December  31, 1990, December  31, 1991  and the  six
months ended June 30, 1992, PHMC originated or purchased, for its own account or
for  the account of  an affiliate, conventional  mortgage loans having aggregate
principal  balances   of   approximately  $5,837,566,957,   $9,742,858,764   and
$9,500,758,352, respectively.
 
DELINQUENCY AND FORECLOSURE EXPERIENCE
 
    The  following  tables  set  forth  certain  information  concerning  recent
delinquency, foreclosure and loan loss  experience on the conventional  mortgage
loans included in PHMC's mortgage loan servicing portfolio which were originated
by  PHMC for its own account  or for the account of  an affiliate or acquired by
PHMC for its own account or for the account of an affiliate and underwritten  to
PHMC's  underwriting standards (the "Program Loans"), on the Program Loans which
are fixed interest rate  mortgage loans ("Fixed  Program Loans"), including,  in
both  cases, Relocation  Mortgage Loans, and  on the Fixed  Program Loans, other
than Relocation Mortgage Loans, having original  terms to stated maturity of  15
years  ("Fixed 15-Year Non-relocation  Program Loans"). See  "Description of the
Mortgage  Loans"   herein   and   "The  Trust   Estates--Mortgage   Loans"   and
"PHMC--General,"   "--Mortgage  Loan  Underwriting"  and  "--Servicing"  in  the
Prospectus. The delinquency, foreclosure and loan loss experience represents the
recent experience of PHMC and The Prudential Mortgage Capital Company, Inc.,  an
affiliate of PHMC which serviced the Program Loans prior to June 30, 1989. There
can  be no assurance that the  delinquency, foreclosure and loan loss experience
set forth with  respect to PHMC's  total servicing portfolio  of Program  Loans,
which  includes both fixed and adjustable interest rate mortgage loans and loans
having a  variety of  original  terms to  stated maturity  including  Relocation
Mortgage   Loans  and  non-relocation  mortgage   loans,  and  PHMC's  servicing
portfolios of Fixed Program Loans or Fixed 15-Year Non-relocation Program Loans,
each of which includes loans having  a variety of payment characteristics,  such
as  Subsidy Loans, Buy-Down  Loans and Balloon Loans,  will be representative of
the results that may be experienced with respect to the Mortgage Loans  included
in the Trust Estate.
 
    Historically,  Relocation  Mortgage  Loans, which  constitute  a significant
percentage of the Mortgage Loans currently serviced by PHMC, have experienced  a
significantly  lower  rate of  delinquency and  foreclosure than  other mortgage
loans included in the portfolios of total Program Loans and Fixed Program Loans.
There can  be no  assurance that  the future  experience on  the Mortgage  Loans
contained  in the Trust  Estate, all of  which are fixed  interest rate mortgage
loans having original  terms to stated  maturity of 15  years and  approximately
2.36%  (by percentage of Cut-off Date  Aggregate Principal Balance) of which are
Relocation Mortgage  Loans, will  be comparable  to that  of the  total  Program
Loans,  the  Fixed Program  Loans or  the  Fixed 15-Year  Non-relocation Program
Loans.
 
                                      S-64
<PAGE>
                              TOTAL PROGRAM LOANS
 
<TABLE>
<CAPTION>
                           AS OF                   AS OF                   AS OF
                     DECEMBER 31, 1990       DECEMBER 31, 1991         JUNE 30, 1992
                   ----------------------  ----------------------  ----------------------
                               BY DOLLAR               BY DOLLAR               BY DOLLAR
                    BY NO.      AMOUNT      BY NO.      AMOUNT      BY NO.      AMOUNT
                   OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS
                   --------   -----------  --------   -----------  --------   -----------
<S>                <C>        <C>          <C>        <C>          <C>        <C>
                                       (DOLLAR AMOUNTS IN THOUSANDS)
 
Total Portfolio
 of Program
 Loans...........   99,196    $13,724,585   136,972   $21,489,014   165,917   $27,749,541
                   --------   -----------  --------   -----------  --------   -----------
                   --------   -----------  --------   -----------  --------   -----------
Period of
 Delinquency(1)
  30 to 59
  days...........    2,439    $   319,663     2,973   $   396,403     2,637   $   375,724
  60 to 89
  days...........      697         93,302       706       103,710       614        93,281
  90 days or
  more...........      902        145,245     1,268       220,943     1,266       213,932
                   --------   -----------  --------   -----------  --------   -----------
Total Delinquent
 Loans...........    4,038    $   558,210     4,947   $   721,056     4,517   $   682,937
                   --------   -----------  --------   -----------  --------   -----------
                   --------   -----------  --------   -----------  --------   -----------
Percent of
 Portfolio.......     4.07%          4.07%     3.61%         3.36%     2.72%         2.46%
</TABLE>
<TABLE>
<CAPTION>
                          AS OF                AS OF                AS OF
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
<S>                <C>                  <C>                  <C>
                                   (DOLLAR AMOUNTS IN THOUSANDS)
 
Foreclosures(2)... $      132,326       $      189,563       $      236,808
Foreclosure
 Ratio(3)........            0.96     %           0.88     %           0.85     %
 
<CAPTION>
 
                       YEAR ENDED           YEAR ENDED        SIX MONTHS ENDED
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
                                   (DOLLAR AMOUNTS IN THOUSANDS)
<S>                <C>                  <C>                  <C>
 
Net Gain
 (Loss)(4).......  $      (4,897)       $     (11,103)       $     (10,936)
Net Gain (Loss)
 Ratio(5)........          (0.04)     %         (0.05)     %         (0.04)     %
</TABLE>
 
- --------------------------
(1) The indicated periods of  delinquency are based on  the number of days  past
    due,  based on a 30-day month. No mortgage loan is considered delinquent for
    these purposes until one month has passed since its contractual due date.  A
    mortgage   loan  is   no  longer  considered   delinquent  once  foreclosure
    proceedings have commenced.
 
(2) Includes loans in the applicable portfolio for which foreclosure proceedings
    had been instituted or with respect  to which the related property had  been
    acquired as of the dates indicated.
 
(3) Foreclosures  as a percentage of total  loans in the applicable portfolio at
    the end of each period.
 
(4) Does not  include gain  or loss  with  respect to  loans in  the  applicable
    portfolio  for  which foreclosure  proceedings had  been instituted  but not
    completed as of  the dates indicated,  or for which  the related  properties
    have been acquired in foreclosure proceedings but not yet sold.
 
(5) Net  gain (loss) as a percentage of  total loans in the applicable portfolio
    at the end of each period.
 
                                      S-65
<PAGE>
                              FIXED PROGRAM LOANS
 
<TABLE>
<CAPTION>
                           AS OF                   AS OF                   AS OF
                     DECEMBER 31, 1990       DECEMBER 31, 1991         JUNE 30, 1992
                   ----------------------  ----------------------  ----------------------
                               BY DOLLAR               BY DOLLAR               BY DOLLAR
                    BY NO.      AMOUNT      BY NO.      AMOUNT      BY NO.      AMOUNT
                   OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS    OF LOANS
                   --------   -----------  --------   -----------  --------   -----------
<S>                <C>        <C>          <C>        <C>          <C>        <C>
                                       (DOLLAR AMOUNTS IN THOUSANDS)
 
Total Portfolio
 of Fixed Program
 Loans...........   86,233    $11,687,518   120,333   $18,604,937   143,122   $23,645,847
                   --------   -----------  --------   -----------  --------   -----------
                   --------   -----------  --------   -----------  --------   -----------
Period of
 Delinquency(1)
  30 to 59
  days...........    1,823    $   227,468     2,379   $   311,415     2,127   $   292,283
  60 to 89
  days...........      456         52,748       534        72,567       490        73,404
  90 days or
  more...........      538         72,393       859       133,313       915       146,743
                   --------   -----------  --------   -----------  --------   -----------
Total Delinquent
 Loans...........    2,817    $   352,609     3,772   $   517,295     3,532   $   512,430
                   --------   -----------  --------   -----------  --------   -----------
                   --------   -----------  --------   -----------  --------   -----------
Percent of Fixed
 Program Loan
 Portfolio.......     3.27%          3.02%     3.13%         2.78%     2.47%         2.17%
</TABLE>
<TABLE>
<CAPTION>
                          AS OF                AS OF                AS OF
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
<S>                <C>                  <C>                  <C>
                                   (DOLLAR AMOUNTS IN THOUSANDS)
 
Foreclosures(2)... $      48,681        $      93,405        $      126,441
Foreclosure
 Ratio(3)........           0.42      %          0.50      %           0.53     %
 
<CAPTION>
 
                       YEAR ENDED           YEAR ENDED        SIX MONTHS ENDED
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
                                   (DOLLAR AMOUNTS IN THOUSANDS)
<S>                <C>                  <C>                  <C>
 
Net Gain
 (Loss)(4).......  $      (1,194      ) $      (4,050      ) $       (3,992     )
Net Gain (Loss)
 Ratio(5)........          (0.01      )%         (0.02      )%          (0.02     )%
</TABLE>
 
                                      S-66
<PAGE>
                   FIXED 15-YEAR NON-RELOCATION PROGRAM LOANS
 
<TABLE>
<CAPTION>
                           AS OF                  AS OF                   AS OF
                     DECEMBER 31, 1990      DECEMBER 31, 1991         JUNE 30, 1992
                   ---------------------  ----------------------  ----------------------
                              BY DOLLAR               BY DOLLAR               BY DOLLAR
                    BY NO.    AMOUNT OF    BY NO.     AMOUNT OF    BY NO.     AMOUNT OF
                   OF LOANS     LOANS     OF LOANS      LOANS     OF LOANS      LOANS
                   --------   ----------  --------   -----------  --------   -----------
<S>                <C>        <C>         <C>        <C>          <C>        <C>
                                       (DOLLAR AMOUNTS IN THOUSANDS)
Total Portfolio
 of
 Fixed 15-Year
 Non-relocation
 Program Loans...   12,273    $1,244,533   17,215    $ 2,148,635   27,273    $ 4,113,153
                   --------   ----------  --------   -----------  --------   -----------
                   --------   ----------  --------   -----------  --------   -----------
Period of
 Delinquency(1)
  30 to 59
  days...........      260    $   29,485      307    $    30,859      278    $    33,388
  60 to 89
  days...........       54         5,762       66          5,370       53          7,365
  90 days or
  more...........       55         7,061       87         13,480       92         11,046
                   --------   ----------  --------   -----------  --------   -----------
Total Delinquent
 Loans...........      369    $   42,308      460    $    49,709      423    $    51,799
                   --------   ----------  --------   -----------  --------   -----------
                   --------   ----------  --------   -----------  --------   -----------
Percent of
 Fixed 15-Year
 Non-relocation
 Program Loan
 Portfolio.......     3.01%         3.40%    2.67%          2.31%    1.55%          1.26%
</TABLE>
<TABLE>
<CAPTION>
                          AS OF                AS OF                AS OF
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
                                   (DOLLAR AMOUNTS IN THOUSANDS)
<S>                <C>                  <C>                  <C>
Foreclosures(2)... $       5,696        $      10,360        $       14,624
Foreclosure
 Ratio(3)........           0.46      %          0.48      %           0.36     %
 
<CAPTION>
 
                       YEAR ENDED           YEAR ENDED        SIX MONTHS ENDED
                    DECEMBER 31, 1990    DECEMBER 31, 1991      JUNE 30, 1992
                   -------------------  -------------------  -------------------
                                   (DOLLAR AMOUNTS IN THOUSANDS)
<S>                <C>                  <C>                  <C>
Net Gain
 (Loss)(4).......  $       (459)        $       (211)        $         (46)
Net Gain (Loss)
 Ratio(5)........         (0.04)      %        (0.01)      %         (0.00)     %
</TABLE>
 
- --------------------------
(1) The indicated periods of  delinquency are based on  the number of days  past
    due,  based on a 30-day month. No mortgage loan is considered delinquent for
    these purposes until one month has passed since its contractual due date.  A
    mortgage   loan  is   no  longer  considered   delinquent  once  foreclosure
    proceedings have commenced.
 
(2) Includes loans in the applicable portfolio for which foreclosure proceedings
    had been instituted or with respect  to which the related property had  been
    acquired as of the dates indicated.
 
(3) Foreclosures  as a percentage of total  loans in the applicable portfolio at
    the end of each period.
 
(4) Does not  include gain  or loss  with  respect to  loans in  the  applicable
    portfolio  for  which foreclosure  proceedings had  been instituted  but not
    completed as of  the dates indicated,  or for which  the related  properties
    have been acquired in foreclosure proceedings but not yet sold.
 
(5) Net  gain (loss) as a percentage of  total loans in the applicable portfolio
    at the end of each period.
 
    The likelihood that a mortgagor will become delinquent in the payment of his
or her mortgage loan, the rate of any subsequent foreclosures, and the  severity
of any loan loss experience, may be affected by a number of factors related to a
borrower's  personal circumstances, including, but  not limited to, unemployment
or change  in  employment  (or  in  the  case  of  self-employed  mortgagors  or
mortgagors  relying  on  commission  income,  fluctuations  in  income), marital
separation and  the mortgagor's  equity in  the related  mortgaged property.  In
addition,  delinquency, foreclosure and loan loss experience may be sensitive to
adverse economic  conditions,  either  nationally  or  regionally,  may  exhibit
seasonal  variations and may  be influenced by  the level of  interest rates and
servicing  decisions  on  the  applicable  mortgage  loans.  Regional   economic
conditions  (including  declining real  estate  values) may  particularly affect
delinquency, foreclosure  and loan  loss  experience on  mortgage loans  to  the
extent  that mortgaged properties are  concentrated in certain geographic areas.
The Seller believes that the changes in the
 
                                      S-67
<PAGE>
delinquency, foreclosure and loan loss experience of PHMC's respective servicing
portfolios during  the  periods  set  forth  in  the  preceding  tables  may  be
attributable  to factors such  as those described above,  although the Seller is
unable to assess to what extent these  changes are the result of any  particular
factor  or a combination of factors.  The delinquency, foreclosure and loan loss
experience  on  the  Mortgage  Loans  contained  in  the  Trust  Estate  may  be
particularly   affected  to  the  extent   that  the  Mortgaged  Properties  are
concentrated in areas which experience adverse economic conditions or  declining
real estate values. See "Description of the Mortgage Loans."
 
                      PREPAYMENT AND YIELD CONSIDERATIONS
 
    The  rate  of distributions  in reduction  of the  principal balance  of any
Subclass of the Class A Certificates and the Class M Certificates, the aggregate
amount of distributions  on any  Subclass of the  Class A  Certificates and  the
Class  M Certificates and the  yield to maturity of any  Subclass of the Class A
Certificates and the  Class M Certificates  purchased at a  discount or  premium
will  be directly related to  the rate of payments  of principal on the Mortgage
Loans in  the Trust  Estate and  the  amount and  timing of  mortgagor  defaults
resulting  in Realized  Losses. The rate  of principal payments  on the Mortgage
Loans will in  turn be affected  by the amortization  schedules of the  Mortgage
Loans,  the  rate of  principal prepayments  (including partial  prepayments and
those  resulting  from  refinancing)  thereon  by  mortgagors,  liquidations  of
defaulted  Mortgage  Loans, repurchases  by the  Seller of  Mortgage Loans  as a
result of defective documentation or breaches of representations and warranties,
optional repurchase  by the  Seller  of defaulted  Mortgage Loans  and  optional
purchase  by the Servicer  of all of  the Mortgage Loans  in connection with the
termination  of   the   Trust  Estate.   See   "Description  of   the   Mortgage
Loans--Optional  Repurchase  of  Defaulted  Mortgage  Loans"  and  "Pooling  and
Servicing   Agreement--Optional    Termination"    herein   and    "The    Trust
Estates--Mortgage   Loans--Assignment  of   Mortgage  Loans   to  the  Trustee,"
"--Optional Repurchases" and "The Pooling and Servicing  Agreement--Termination;
Purchase  of  Mortgage Loans"  in the  Prospectus.  Mortgagors are  permitted to
prepay the Mortgage Loans, in whole or in part, at any time without penalty.  As
described   under   "Description  of   the   Certificates--Principal  (Including
Prepayments)"  herein,  all  or  a  disproportionate  percentage  of   principal
prepayments  on the  Mortgage Loans  (including liquidations  and repurchases of
Mortgage Loans) will be distributed to the holders of Class A Certificates  then
entitled  to  distributions  in  respect  of  principal  during  the  nine years
beginning on the first  Distribution Date. Prepayments  (which, as used  herein,
include  all unscheduled payments of principal, including payments as the result
of liquidations, purchases and repurchases) of  the Mortgage Loans in the  Trust
Estate  will  result in  distributions  to Certificateholders  then  entitled to
distributions in  respect  of principal  of  amounts which  would  otherwise  be
distributed  over the remaining terms of such  Mortgage Loans. Since the rate of
prepayment on the Mortgage Loans will depend  on future events and a variety  of
factors  (as described more fully below  and in the Prospectus under "Prepayment
and Yield Considerations"), no  assurance can be  given as to  such rate or  the
rate  of principal payments on  any Subclass of the  Class A Certificates or the
Class M Certificates or the aggregate amount of distributions on any Subclass of
Class A Certificates or the Class M Certificates.
 
    The rate of payments (including prepayments)  on pools of mortgage loans  is
influenced  by a variety  of economic, geographic, social  and other factors. If
prevailing rates  for  similar  mortgage  loans  fall  significantly  below  the
Mortgage  Interest Rates  on the  Mortgage Loans,  the rate  of prepayment would
generally be  expected to  increase. Conversely,  if interest  rates on  similar
mortgage  loans  rise significantly  above the  Mortgage  Interest Rates  on the
Mortgage Loans, the rate of prepayment would generally be expected to decrease.
 
    Other factors  affecting prepayment  of mortgage  loans include  changes  in
mortgagors'  housing  needs,  job transfers,  unemployment  or, in  the  case of
self-employed mortgagors or mortgagors relying on commission income, substantial
fluctuations in income, significant declines  in real estate values and  adverse
economic   conditions  either  generally  or  in  particular  geographic  areas,
mortgagors' equity in the Mortgaged Properties and servicing decisions. In  this
regard,  mortgagors of relocation mortgage loans  are thought by some within the
mortgage industry to be  more likely to be  transferred by their employers  than
mortgagors  generally. There can be no assurance  as to the likelihood of future
transfers
 
                                      S-68
<PAGE>
of mortgagors of Relocation Mortgage Loans  or as to such mortgagors'  continued
employment  with  the same  employers  by which  they  were employed  when their
mortgage loans were  originated. No  representation is made  as to  the rate  of
prepayment  on the Relocation  Mortgage Loans. In addition,  all of the Mortgage
Loans contain due-on-sale  clauses which  will generally be  exercised upon  the
sale of the related Mortgaged Properties. Consequently, acceleration of mortgage
payments  as a result of  any such sale will affect  the level of prepayments on
the Mortgage Loans. The extent to which defaulted Mortgage Loans are assumed  by
transferees  of the  related Mortgaged Properties  will also affect  the rate of
principal payments. The rate of prepayment and, therefore, the yield to maturity
of the Class A and Class M Certificates will be affected by the extent to  which
(i)  the Seller elects to repurchase, rather than substitute for, Mortgage Loans
which are found by the Trustee  to have defective documentation or with  respect
to  which  the Seller  has breached  a  representation or  warranty or  (ii) the
Servicer elects  to encourage  the refinancing  of any  defaulted Mortgage  Loan
rather  than  to  permit  an  assumption  thereof  by  a  mortgagor  meeting the
Servicer's underwriting  guidelines.  See  "Servicing of  the  Mortgage  Loans--
Enforcement  of Due-on-Sale Clauses; Realization  Upon Defaulted Mortgage Loans"
in the Prospectus. There can  be no certainty as to  the rate of prepayments  on
the  Mortgage Loans  during any period  or over  the life of  the Series 1992-26
Certificates. See "Prepayment and Yield Considerations" in the Prospectus.
 
    The timing of changes in  the rate of prepayment  on the Mortgage Loans  may
significantly affect the actual yield to maturity experienced by an investor who
purchases  a Class A or Class  M Certificate at a price  other than par, even if
the average rate of principal payments experienced over time is consistent  with
such  investor's expectation. In general, the  earlier a prepayment of principal
on the underlying  Mortgage Loans,  the greater  the effect  on such  investor's
yield to maturity. As a result, the effect on such investor's yield of principal
payments  occurring at a rate higher (or lower) than the rate anticipated by the
investor during the period immediately following the issuance of the Class A and
Class M Certificates would  not be fully offset  by a subsequent like  reduction
(or increase) in the rate of principal payments.
 
    The  yield to maturity  on the Class  M Certificates will  be more sensitive
than the Class A Certificates  to losses due to  defaults on the Mortgage  Loans
(and the timing thereof), to the extent not covered by the Class B Certificates,
because  the  entire amount  of such  losses will  be allocable  to the  Class M
Certificates prior to  the Class  A Certificates, except  as otherwise  provided
herein.  To  the  extent  not covered  by  Periodic  Advances,  delinquencies on
Mortgage Loans  may  also have  a  relatively greater  effect  on the  yield  to
investors  in  the  Class  M Certificates.  Amounts  otherwise  distributable to
holders of  the Class  M Certificates  will  be made  available to  protect  the
holders  of the Class A Certificates  against interruptions in distributions due
to certain  mortgagor  delinquencies.  Such delinquencies,  to  the  extent  not
covered  by the Class B Certificates, even if subsequently cured, may affect the
timing of the receipt of distributions  by the holders of Class M  Certificates,
because  the entire amount of those delinquencies  would be borne by the Class M
Certificates prior to the Class A Certificates.
 
    No representation  is made  as to  the  rate of  principal payments  on  the
Mortgage  Loans  or as  to the  yield to  maturity  of any  Subclass of  Class A
Certificates or  the Class  M Certificates.  An  investor is  urged to  make  an
investment  decision with respect to any Subclass of Class A Certificates or the
Class M Certificates based on the anticipated yield to maturity to such Subclass
of Class A Certificates or the Class M Certificates resulting from its  purchase
price  and such  investor's own  determination as  to anticipated  Mortgage Loan
prepayment rates under a variety of scenarios and, in the case of the Class A-11
and Class A-12 Certificates, such investor's own determination as to anticipated
levels of LIBOR. The extent to which any Subclass of Class A Certificates or the
Class M Certificates are purchased at a discount or a premium and the degree  to
which  the  timing  of  payments  on such  Subclass  or  Class  is  sensitive to
prepayments and, in the case of the Class A-11 and Class A-12 Certificates,  the
degree  to which LIBOR  varies from the  level anticipated by  an investor, will
determine the extent to which  the yield to maturity  of such Subclass or  Class
may  vary from the anticipated yield.  An investor should carefully consider the
associated risks, including, in the case of any Class A or Class M  Certificates
purchased  at  a discount,  the  risk that  a  slower than  anticipated  rate of
principal payments on the Mortgage Loans could result in an actual yield to such
investor that is lower than the anticipated yield
 
                                      S-69
<PAGE>
and, in the case of any Class A or Class M Certificates purchased at a  premium,
the  risk that a faster than anticipated rate of principal payments could result
in an actual yield to such investor that is lower than the anticipated yield.
 
    An investor should consider the risk that rapid rates of prepayments on  the
Mortgage Loans, and therefore of amounts distributable in reduction of principal
balance of the Class A or Class M Certificates, may coincide with periods of low
prevailing  interest rates. During such periods, the effective interest rates on
securities in which an  investor may choose to  reinvest amounts distributed  in
reduction  of  the principal  balance  of such  investor's  Class A  or  Class M
Certificate may  be lower  than the  applicable Pass-Through  Rate.  Conversely,
slower  rates of  prepayments on  the Mortgage  Loans, and  therefore of amounts
distributable in  reduction of  principal balance  of  the Class  A or  Class  M
Certificates,  may  coincide with  periods  of high  prevailing  interest rates.
During such  periods, the  amount  of principal  distributions available  to  an
investor  for  reinvestment  at  such  high  prevailing  interest  rates  may be
relatively small.
 
    Investors in the Class A-11 Certificates should understand that at levels of
LIBOR greater than 9.35%, the Pass-Through Rate of such Subclass will remain  at
its  maximum rate of approximately 10.00% per annum. Investors in the Class A-11
Certificates should also consider the risk that lower than anticipated levels of
LIBOR could  result in  actual yields  to  such investors  that are  lower  than
anticipated  yields. Conversely, investors in the Class A-12 Certificates should
consider the risk that higher than  anticipated levels of LIBOR could result  in
actual  yields to such  investors that are  significantly lower than anticipated
yields. Investors  in the  Class  A-12 Certificates  should understand  that  at
levels  of LIBOR  greater than  9.35%, the Pass-Through  Rate of  the Class A-12
Certificates will be 0% per annum. See
"--Sensitivity of the Class A-12 Certificates" below. Moreover, investors in the
Class A-11 and  Class A-12  Certificates should  understand that  the timing  of
changes  in the level  of LIBOR may  affect the actual  yields to such investors
even if the average level is consistent with such investors' expectations.  Each
investor  must  make  an  independent  decision  as  to  the  appropriate  LIBOR
assumptions to be used in  deciding whether to purchase  a Class A-11 and  Class
A-12 Certificate.
 
    As indicated under "Federal Income Tax Considerations" herein, the Class A-R
Certificateholder's REMIC taxable income and the tax liability thereon will, and
the  Class A-LR Certificateholder's  REMIC taxable income  and the tax liability
thereon may, exceed cash distributions  to such holders during certain  periods.
There  can be no assurance as to the amount by which such taxable income or such
tax liability will  exceed cash distributions  in respect of  the Class A-R  and
Class  A-LR Certificates  during any such  period and no  representation is made
with respect thereto under any  principal prepayment scenario or otherwise.  DUE
TO  THE SPECIAL TAX TREATMENT OF RESIDUAL INTERESTS, THE AFTER-TAX RETURN OF THE
CLASS A-R AND CLASS A-LR CERTIFICATES  MAY BE SIGNIFICANTLY LOWER THAN WOULD  BE
THE  CASE  IF THE  CLASS  A-R AND  CLASS A-LR  CERTIFICATES  WERE TAXED  AS DEBT
INSTRUMENTS.
 
    As referred to herein, the  weighted average life of  a Subclass of Class  A
Certificates  and the Class M Certificates refers  to the average amount of time
that will elapse from the date of issuance of such Subclass or Class until  each
dollar  in  reduction of  the principal  balance  of such  Subclass or  Class is
distributed to the investor. The weighted  average life of each Subclass of  the
Class  A Certificates and the Class M  Certificates will be influenced by, among
other things, the rate and timing  of principal payments on the Mortgage  Loans,
which may be in the form of scheduled amortization or prepayments.
 
    The  weighted average lives (and,  to the extent purchased  at a discount or
premium, the yield to maturity) of the Class A-16 and Class A-17 Certificates to
the extent of their Companion Components will be highly sensitive to the rate of
principal payments (including prepayments) on the Mortgage Loans.  Specifically,
if  prepayments result in  a Class A  Principal Distribution Amount  equal to or
less than the sum  of the PAC  Principal Amounts on  any Distribution Date,  the
Class  A-16  and  Class  A-17  Certificates  will  receive  no  distributions in
reduction of the Component Principal  Balances of their Companion Components  on
such  Distribution Date. Further, on each  Distribution Date up to and including
the Distribution Date on which the Component Principal Balances of the Companion
Components are reduced to  zero, any Excess Principal  Payments will be  applied
first to the Companion Components and
 
                                      S-70
<PAGE>
then to the outstanding Subclasses of PAC Certificates and PAC Components in the
proportions   and  priorities  set   forth  above  under   "Description  of  the
Certificates--Principal (Including  Prepayments)" without  regard to  their  PAC
Principal  Amounts. See  "Description of  the Certificates--Principal (Including
Prepayments)--Principal Payment  Characteristics of  the PAC  Certificates,  PAC
Components and the Companion Components" herein.
 
    Prepayments on mortgage loans are commonly measured relative to a prepayment
standard  or model. The  model used in this  Prospectus Supplement, the Standard
Prepayment Assumption ("SPA"),  represents an  assumed rate  of prepayment  each
month  relative  to the  then outstanding  principal  balance of  a pool  of new
mortgage loans. A prepayment assumption of 100% SPA assumes constant  prepayment
rates  of  0.2% per  annum of  the  then outstanding  principal balance  of such
mortgage loans in  the first  month of  the life of  the mortgage  loans and  an
additional  0.2% per annum  in each month thereafter  until the thirtieth month.
Beginning in the thirtieth month and in each month thereafter during the life of
the mortgage loans, 100% SPA assumes a constant prepayment rate of 6% per  annum
each  month. As used in the table below, "0% SPA" assumes prepayment rates equal
to  0%  of  SPA,  i.e.,  no  prepayments.  Correspondingly,  "75%  SPA"  assumes
prepayment rates equal to 75% of SPA, and so forth. SPA DOES NOT PURPORT TO BE A
HISTORICAL   DESCRIPTION  OF  PREPAYMENT  EXPERIENCE  OR  A  PREDICTION  OF  THE
ANTICIPATED RATE OF  PREPAYMENT OF  ANY POOL  OF MORTGAGE  LOANS, INCLUDING  THE
MORTGAGE LOANS.
 
    The  tables  set  forth  below  have  been  prepared  on  the  basis  of the
characteristics of the Mortgage  Loans that are expected  to be included in  the
Trust  Estate, as described above under "Description of the Mortgage Loans." The
tables assume, among other things, that (i) the scheduled payment in each  month
for each Mortgage Loan has been based on its outstanding balance as of the first
day of the month preceding the month of such payment, its Mortgage Interest Rate
and its remaining term to stated maturity, so that such scheduled payments would
amortize  the  remaining balance  by its  stated  maturity date,  (ii) scheduled
monthly payments of principal and interest on the Mortgage Loans will be  timely
received on the first day of each month (with no defaults), commencing September
1,  1992, (iii) the Seller  does not repurchase any  Mortgage Loan, as described
under "The Trust Estates--Mortgage  Loans" in the  Prospectus, and the  Servicer
does  not exercise its option to purchase the Mortgage Loans and thereby cause a
termination of  the Trust  Estate, (iv)  principal prepayments  on the  Mortgage
Loans  will be received on the last day of each month commencing August 31, 1992
at the respective constant percentages of SPA set forth in the tables and  there
are no Prepayment Interest Shortfalls and (v) each Mortgage Loan has an original
term to maturity of 15 years. IT IS HIGHLY UNLIKELY THAT THE MORTGAGE LOANS WILL
PREPAY AT ANY CONSTANT RATE OR THAT ALL OF THE MORTGAGE LOANS WILL PREPAY AT THE
SAME  RATE. In addition, there may be differences between the characteristics of
the mortgage loans  ultimately included  in the  Trust Estate  and the  Mortgage
Loans which are expected to be included, as described herein. Any difference may
have an effect upon the actual percentages of initial Class A Subclass Principal
Balance  of the Subclasses of Class A Certificates and initial principal balance
of the Class M  Certificates outstanding, the actual  weighted average lives  of
the Subclasses of Class A Certificates and the Class M Certificates and the date
on  which the  Class A  Subclass Principal  Balance of  any Subclass  of Class A
Certificates and the principal balance of  the Class M Certificates are  reduced
to zero.
 
    Based  upon  the foregoing  assumptions, the  following tables  indicate the
weighted average life of each Subclass and Class of Offered Certificates and set
forth the percentages of the initial Class A Subclass Principal Balance of  each
such  Subclass, and,  in the case  of the  Class M Certificates,  of the initial
principal balance of the  Class M Certificates that  would be outstanding  after
each of the dates shown at various constant percentages of SPA.
 
                                      S-71
<PAGE>
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                     CLASS A-1                            CLASS A-2
                                CERTIFICATES AT THE                  CERTIFICATES AT THE
                               FOLLOWING PERCENTAGES                FOLLOWING PERCENTAGES
                                      OF SPA                               OF SPA
     DISTRIBUTION       -----------------------------------  -----------------------------------
         DATE            0%    75%   150%  270%  375%  500%   0%    75%   150%  270%  375%  500%
<S>                     <C>    <C>   <C>   <C>   <C>   <C>   <C>    <C>   <C>   <C>   <C>   <C>
- ----------------------  -----------------------------------  -----------------------------------
Initial...............
                          100  100   100   100   100   100
                                                               100  100   100   100   100   100
August 1993...........
                           82   75    69    68    68    68
                                                                87   82    77    76    76    76
August 1994...........
                           62   40    19    16    16    16
                                                                72   56    40    38    38    38
August 1995...........
                           41    0     0     0     0     0
                                                                56   25     0     0     0     0
August 1996...........
                           17    0     0     0     0     0
                                                                39    0     0     0     0     0
August 1997...........
                            0    0     0     0     0     0
                                                                20    0     0     0     0     0
August 1998...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 1999...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2000...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2001...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2002...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2003...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2004...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2005...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2006...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
August 2007...........
                            0    0     0     0     0     0
                                                                 0    0     0     0     0     0
Weighted Average
  Life (years)(1).....   2.53  1.70  1.38  1.35  1.35  1.35   3.26  2.15  1.71  1.67  1.67  1.65
 
<CAPTION>
                                      CLASS A-3
                                 CERTIFICATES AT THE
                                FOLLOWING PERCENTAGES
                                       OF SPA
     DISTRIBUTION       -------------------------------------
         DATE            0%     75%   150%   270%  375%  500%
<S>                     <C>    <C>    <C>    <C>   <C>   <C>
- ----------------------  -------------------------------------
Initial...............
 
                          100    100    100  100   100   100
August 1993...........
 
                          100    100    100  100   100   100
August 1994...........
 
                          100    100    100  100   100   100
August 1995...........
 
                          100     98      0    0     0     0
August 1996...........
 
                          100      0      0    0     0     0
August 1997...........
 
                           75      0      0    0     0     0
August 1998...........
 
                            0      0      0    0     0     0
August 1999...........
 
                            0      0      0    0     0     0
August 2000...........
 
                            0      0      0    0     0     0
August 2001...........
 
                            0      0      0    0     0     0
August 2002...........
 
                            0      0      0    0     0     0
August 2003...........
 
                            0      0      0    0     0     0
August 2004...........
 
                            0      0      0    0     0     0
August 2005...........
 
                            0      0      0    0     0     0
August 2006...........
 
                            0      0      0    0     0     0
August 2007...........
 
                            0      0      0    0     0     0
Weighted Average
  Life (years)(1).....   5.35   3.44   2.65  2.58  2.58  2.51
</TABLE>
 
- ------------------
(1) The  weighted average  life of an  Offered Certificate is  determined by (i)
    multiplying the  amount  of  each distribution  in  reduction  of  principal
    balance  by  the number  of  years from  the date  of  the issuance  of such
    Certificate to the related  Distribution Date, (ii)  adding the results  and
    (iii)  dividing  the  sum by  the  aggregate distributions  in  reduction of
    principal balance referred to in clause (i).
 
                                      S-72
<PAGE>
 
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                       CLASS A-4                                 CLASS A-5
                                  CERTIFICATES AT THE                       CERTIFICATES AT THE
                                 FOLLOWING PERCENTAGES                     FOLLOWING PERCENTAGES
                                         OF SPA                                    OF SPA
     DISTRIBUTION       ----------------------------------------  ----------------------------------------
         DATE            0%     75%   150%   270%   375%   500%    0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  ----------------------------------------  ----------------------------------------
Initial...............
                          100    100    100    100    100    100
                                                                    100    100    100    100    100    100
August 1993...........
                          100    100    100    100    100    100
                                                                    100    100    100    100    100    100
August 1994...........
                          100    100    100    100    100    100
                                                                    100    100    100    100    100    100
August 1995...........
                          100    100     93     87     87     51
                                                                    100    100    100    100    100    100
August 1996...........
                          100     92     27     19     17      0
                                                                    100    100    100    100    100      0
August 1997...........
                          100     44      0      0      0      0
                                                                    100    100     31      4      0      0
August 1998...........
                           98      0      0      0      0      0
                                                                    100    100     23      0      0      0
August 1999...........
                           60      0      0      0      0      0
                                                                    100    100      0      0      0      0
August 2000...........
                           20      0      0      0      0      0
                                                                    100    100      0      0      0      0
August 2001...........
                            0      0      0      0      0      0
                                                                    100     30      0      0      0      0
August 2002...........
                            0      0      0      0      0      0
                                                                    100      0      0      0      0      0
August 2003...........
                            0      0      0      0      0      0
                                                                     61      0      0      0      0      0
August 2004...........
                            0      0      0      0      0      0
                                                                      0      0      0      0      0      0
August 2005...........
                            0      0      0      0      0      0
                                                                      0      0      0      0      0      0
August 2006...........
                            0      0      0      0      0      0
                                                                      0      0      0      0      0      0
August 2007...........
                            0      0      0      0      0      0
                                                                      0      0      0      0      0      0
Weighted Average
  Life (years)(1).....   7.28   4.90   3.68   3.57   3.56   3.05  11.10   8.87   5.18   4.64   4.48   3.66
 
<CAPTION>
                                       CLASS A-6
                                  CERTIFICATES AT THE
                                 FOLLOWING PERCENTAGES
                                         OF SPA
     DISTRIBUTION       ----------------------------------------
         DATE            0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  ----------------------------------------
Initial...............
 
                          100    100    100    100    100    100
August 1993...........
 
                          100    100    100    100    100    100
August 1994...........
 
                          100    100    100    100    100    100
August 1995...........
 
                          100    100    100    100    100    100
August 1996...........
 
                          100    100    100    100    100     86
August 1997...........
 
                          100    100     92     92     82     24
August 1998...........
 
                          100     97     46     46     36      0
August 1999...........
 
                          100     56     11     11      2      0
August 2000...........
 
                          100     17      0      0      0      0
August 2001...........
 
                           78      0      0      0      0      0
August 2002...........
 
                           35      0      0      0      0      0
August 2003...........
 
                            0      0      0      0      0      0
August 2004...........
 
                            0      0      0      0      0      0
August 2005...........
 
                            0      0      0      0      0      0
August 2006...........
 
                            0      0      0      0      0      0
August 2007...........
 
                            0      0      0      0      0      0
Weighted Average
  Life (years)(1).....   9.67   7.20   6.02   6.02   5.76   4.62
</TABLE>
 
- ------------------
(1) The weighted average  life of an  Offered Certificate is  determined by  (i)
    multiplying  the  amount  of  each distribution  in  reduction  of principal
    balance by  the number  of  years from  the date  of  the issuance  of  such
    Certificate  to the related  Distribution Date, (ii)  adding the results and
    (iii) dividing  the  sum by  the  aggregate distributions  in  reduction  of
    principal balance referred to in clause (i).
 
                                      S-73
<PAGE>
 
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                     CLASS A-7                        CLASS A-8 AND CLASS A-9
                                CERTIFICATES AT THE                     CERTIFICATES AT THE
                               FOLLOWING PERCENTAGES                   FOLLOWING PERCENTAGES
                                       OF SPA                                 OF SPA
     DISTRIBUTION       ------------------------------------  ---------------------------------------
         DATE            0%     75%   150%  270%  375%  500%   0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>   <C>   <C>   <C>   <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  ------------------------------------  ---------------------------------------
Initial...............
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1993...........
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1994...........
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1995...........
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1996...........
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1997...........
                          100    100  100   100   100   100
                                                                100    100    100    100    100  100
August 1998...........
                          100    100  100   100   100    47
                                                                100    100    100    100    100  100
August 1999...........
                          100    100  100   100   100     0
                                                                100    100    100    100    100   74
August 2000...........
                          100    100   47    47    20     0
                                                                100    100    100    100    100   43
August 2001...........
                          100    100    0     0     0     0
                                                                100    100     87     87     75   26
August 2002...........
                          100      0    0     0     0     0
                                                                100     95     58     58     50   15
August 2003...........
                          100      0    0     0     0     0
                                                                100     37     37     37     32    9
August 2004...........
                            0      0    0     0     0     0
                                                                 86     21     21     21     19    5
August 2005...........
                            0      0    0     0     0     0
                                                                  9      9      9      9     10    2
August 2006...........
                            0      0    0     0     0     0
                                                                  1      1      1      1      4    1
August 2007...........
                            0      0    0     0     0     0
                                                                  0      0      0      0      0    0
Weighted Average
  Life (years)(1).....  11.67   9.63  8.02  8.02  7.68  6.03  12.42  11.10  10.67  10.67  10.46  8.32
 
<CAPTION>
                                          CLASS A-10
                                      CERTIFICATES AT THE
                                     FOLLOWING PERCENTAGES
                                            OF SPA
     DISTRIBUTION       -----------------------------------------------
         DATE            0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  -----------------------------------------------
Initial...............
 
                          100    100    100    100    100    100
August 1993...........
 
                           91     87     84     83     83     83
August 1994...........
 
                           80     69     58     57     57     57
August 1995...........
 
                           69     48     30     30     30     30
August 1996...........
 
                           57     30     30     30     30     30
August 1997...........
 
                           44     30     30     30     30     30
August 1998...........
 
                           30     30     30     30     30     23
August 1999...........
 
                           30     30     30     30     30     12
August 2000...........
 
                           30     30     23     23     19      7
August 2001...........
 
                           30     30     15     15     13      4
August 2002...........
 
                           30     16     10     10      8      3
August 2003...........
 
                           30      6      6      6      5      1
August 2004...........
 
                           14      3      3      3      3      1
August 2005...........
 
                            2      2      2      2      2      0
August 2006...........
 
                            0      0      0      0      1      0
August 2007...........
 
                            0      0      0      0      0      0
Weighted Average
  Life (years)(1).....   5.94   4.67   4.07   4.04   3.95   3.36
</TABLE>
 
- ------------------
(1) The  weighted average  life of an  Offered Certificate is  determined by (i)
    multiplying the  amount  of  each distribution  in  reduction  of  principal
    balance  by  the number  of  years from  the date  of  the issuance  of such
    Certificate to the related  Distribution Date, (ii)  adding the results  and
    (iii)  dividing  the  sum by  the  aggregate distributions  in  reduction of
    principal balance referred to in clause (i).
 
                                      S-74
<PAGE>
 
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                               CLASS A-11 AND CLASS A-12                       CLASS A-13
                                  CERTIFICATES AT THE                      CERTIFICATES AT THE
                                 FOLLOWING PERCENTAGES                    FOLLOWING PERCENTAGES
                                        OF SPA                                   OF SPA
     DISTRIBUTION       ---------------------------------------  ---------------------------------------
         DATE            0%     75%   150%   270%   375%   500%   0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>    <C>    <C>    <C>   <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  ---------------------------------------  ---------------------------------------
Initial...............
                          100    100    100    100    100  100
                                                                   100    100    100    100    100  100
August 1993...........
                          100    100    100    100    100  100
                                                                   100    100    100     88     88   88
August 1994...........
                          100    100    100    100    100  100
                                                                   100    100    100     62     62    0
August 1995...........
                          100    100     86     84     84   70
                                                                   100    100    100     34      0    0
August 1996...........
                          100     86     61     58     57   33
                                                                   100    100    100     15      0    0
August 1997...........
                           97     67     39     36     32    9
                                                                   100    100    100      4      0    0
August 1998...........
                           88     50     21     18     14    0
                                                                   100    100    100      0      0    0
August 1999...........
                           74     34      4      4      1    0
                                                                   100    100     99      0      0    0
August 2000...........
                           58     19      0      0      0    0
                                                                   100    100     74      0      0    0
August 2001...........
                           42      4      0      0      0    0
                                                                   100    100     43      0      0    0
August 2002...........
                           26      0      0      0      0    0
                                                                   100    100     10      0      0    0
August 2003...........
                            7      0      0      0      0    0
                                                                   100     79      0      0      0    0
August 2004...........
                            0      0      0      0      0    0
                                                                   100     24      0      0      0    0
August 2005...........
                            0      0      0      0      0    0
                                                                    60      0      0      0      0    0
August 2006...........
                            0      0      0      0      0    0
                                                                     0      0      0      0      0    0
August 2007...........
                            0      0      0      0      0    0
                                                                     0      0      0      0      0    0
Weighted Average
  Life (years)(1).....   8.45   6.11   4.65   4.53   4.41  3.67  13.13  11.56   8.77   2.56   1.96  1.54
 
<CAPTION>
                                       CLASS A-14
                                  CERTIFICATES AT THE
                                 FOLLOWING PERCENTAGES
                                         OF SPA
     DISTRIBUTION       ----------------------------------------
         DATE            0%     75%   150%   270%   375%   500%
<S>                     <C>    <C>    <C>    <C>    <C>    <C>
- ----------------------  ----------------------------------------
Initial...............
 
                          100    100    100    100    100    100
August 1993...........
 
                          100    100    100    100    100    100
August 1994...........
 
                          100    100    100    100    100     85
August 1995...........
 
                          100    100    100    100     36      0
August 1996...........
 
                          100    100    100    100      0      0
August 1997...........
 
                          100    100    100    100      0      0
August 1998...........
 
                          100    100    100     99      0      0
August 1999...........
 
                          100    100    100     78      0      0
August 2000...........
 
                          100    100    100     52      0      0
August 2001...........
 
                          100    100    100     26      0      0
August 2002...........
 
                          100    100    100      0      0      0
August 2003...........
 
                          100    100     30      0      0      0
August 2004...........
 
                          100    100      0      0      0      0
August 2005...........
 
                          100      0      0      0      0      0
August 2006...........
 
                            0      0      0      0      0      0
August 2007...........
 
                            0      0      0      0      0      0
Weighted Average
  Life (years)(1).....  13.77  12.74  10.83   8.09   2.97   2.12
</TABLE>
 
- ------------------
(1) The weighted average  life of an  Offered Certificate is  determined by  (i)
    multiplying  the  amount  of  each distribution  in  reduction  of principal
    balance by  the number  of  years from  the date  of  the issuance  of  such
    Certificate  to the related  Distribution Date, (ii)  adding the results and
    (iii) dividing  the  sum by  the  aggregate distributions  in  reduction  of
    principal balance referred to in clause (i).
 
                                      S-75
<PAGE>
 
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                      CLASS A-15                             CLASS A-16
                                 CERTIFICATES AT THE                     CERTIFICATES AT THE
                                FOLLOWING PERCENTAGES                   FOLLOWING PERCENTAGES
                                        OF SPA                                 OF SPA
     DISTRIBUTION       --------------------------------------  -------------------------------------
         DATE            0%     75%   150%   270%   375%  500%   0%     75%   150%   270%  375%  500%
<S>                     <C>    <C>    <C>    <C>    <C>   <C>   <C>    <C>    <C>    <C>   <C>   <C>
- ----------------------  --------------------------------------  -------------------------------------
Initial...............
                          100    100    100    100  100   100
                                                                  100    100    100  100   100   100
August 1993...........
                          100    100    100    100  100   100
                                                                   96     94     92   87    76    62
August 1994...........
                          100    100    100    100  100   100
                                                                   91     85     80   64    29    29
August 1995...........
                          100    100    100    100  100     0
                                                                   85     75     75   49    25    23
August 1996...........
                          100    100    100    100    0     0
                                                                   80     75     75   43    23    23
August 1997...........
                          100    100    100    100    0     0
                                                                   75     75     75   40    23    23
August 1998...........
                          100    100    100    100    0     0
                                                                   75     75     75   40    23    23
August 1999...........
                          100    100    100    100    0     0
                                                                   75     75     75   38    23    17
August 2000...........
                          100    100    100    100    0     0
                                                                   75     75     75   37    23    10
August 2001...........
                          100    100    100    100    0     0
                                                                   75     75     72   32    17     6
August 2002...........
                          100    100    100    100    0     0
                                                                   75     74     66   23    11     4
August 2003...........
                          100    100    100     75    0     0
                                                                   75     61     61   16     7     2
August 2004...........
                          100    100     53     53    0     0
                                                                   72     57     51   11     4     1
August 2005...........
                          100     98     33     33    0     0
                                                                   55     55     32    6     2     1
August 2006...........
                           59     17     17     17    0     0
                                                                   52     31     14    3     1     0
August 2007...........
                            0      0      0      0    0     0
                                                                    0      0      0    0     0     0
Weighted Average
  Life (years)(1).....  14.10  13.47  12.55  12.28  3.55  2.35  11.09  10.38   9.75  5.42  3.42  2.72
 
<CAPTION>
                                      CLASS A-17
                                 CERTIFICATES AT THE
                                FOLLOWING PERCENTAGES
                                        OF SPA
     DISTRIBUTION       --------------------------------------
         DATE            0%     75%   150%   270%   375%  500%
<S>                     <C>    <C>    <C>    <C>    <C>   <C>
- ----------------------  --------------------------------------
Initial...............
 
                          100    100    100    100  100   100
August 1993...........
 
                          100    100    100     95   84    70
August 1994...........
 
                          100    100    100     85   50    49
August 1995...........
 
                          100    100    100     74   49    49
August 1996...........
 
                          100    100    100     68   49    33
August 1997...........
 
                          100    100     90     52   32    12
August 1998...........
 
                          100     99     73     35   16     4
August 1999...........
 
                          100     85     58     22    5     3
August 2000...........
 
                          100     71     54     16    4     2
August 2001...........
 
                           92     58     54     14    3     1
August 2002...........
 
                           77     54     53     11    2     1
August 2003...........
 
                           61     52     52      8    1     0
August 2004...........
 
                           54     51     46      6    1     0
August 2005...........
 
                           51     51     30      4    0     0
August 2006...........
 
                           51     30     14      2    0     0
August 2007...........
 
                            0      0      0      0    0     0
Weighted Average
  Life (years)(1).....  12.40  11.06   9.80   5.42  3.52  2.76
</TABLE>
 
- ------------------
(1) The  weighted average  life of an  Offered Certificate is  determined by (i)
    multiplying the  amount  of  each distribution  in  reduction  of  principal
    balance  by  the number  of  years from  the date  of  the issuance  of such
    Certificate to the related  Distribution Date, (ii)  adding the results  and
    (iii)  dividing  the  sum by  the  aggregate distributions  in  reduction of
    principal balance referred to in clause (i).
 
                                      S-76
<PAGE>
 
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
 
<TABLE>
<CAPTION>
                                 CLASS A-R AND A-LR                         CLASS M
                                CERTIFICATES AT THE                   CERTIFICATES AT THE
                               FOLLOWING PERCENTAGES                 FOLLOWING PERCENTAGES
                                       OF SPA                                OF SPA
     DISTRIBUTION       ------------------------------------  ------------------------------------
         DATE            0%     75%   150%  270%  375%  500%   0%     75%   150%  270%  375%  500%
<S>                     <C>    <C>    <C>   <C>   <C>   <C>   <C>    <C>    <C>   <C>   <C>   <C>
- ----------------------  ------------------------------------  ------------------------------------
Initial...............
                          100    100  100   100   100   100
                                                                100    100  100   100   100   100
August 1993...........
                           97     95   94    92    90    88
                                                                 97     97   97    97    97    97
August 1994...........
                           93     89   84    78    73    66
                                                                 93     93   93    93    93    93
August 1995...........
                           89     81   73    62    53    43
                                                                 89     89   89    89    89    89
August 1996...........
                           84     73   63    48    38    27
                                                                 84     84   84    84    84    84
August 1997...........
                           79     65   53    37    27    17
                                                                 79     79   79    79    79    79
August 1998...........
                           74     58   45    29    19    10
                                                                 74     73   72    70    68    66
August 1999...........
                           68     51   37    22    13     6
                                                                 68     66   64    60    57    53
August 2000...........
                           62     44   31    16     9     3
                                                                 62     58   54    49    44    39
August 2001...........
                           55     37   25    12     6     2
                                                                 55     50   45    38    32    26
August 2002...........
                           47     31   19     9     4     1
                                                                 47     41   35    27    21    16
August 2003...........
                           39     24   15     6     3     1
                                                                 39     32   26    19    14     9
August 2004...........
                           30     18   10     4     2     0
                                                                 30     24   19    12     8     5
August 2005...........
                           20     12    6     2     1     0
                                                                 20     15   11     7     4     2
August 2006...........
                           10      5    3     1     0     0
                                                                 10      7    5     3     2     1
August 2007...........
                            0      0    0     0     0     0
                                                                  0      0    0     0     0     0
Weighted Average
  Life (years)(1).....   8.98   7.35  6.12  4.72  3.88  3.18   8.98   8.59  8.25  7.78  7.44  7.09
</TABLE>
 
- ------------------
(1) The weighted average  life of an  Offered Certificate is  determined by  (i)
    multiplying  the  amount  of  each distribution  in  reduction  of principal
    balance by  the number  of  years from  the date  of  the issuance  of  such
    Certificate  to the related  Distribution Date, (ii)  adding the results and
    (iii) dividing  the  sum by  the  aggregate distributions  in  reduction  of
    principal balance referred to in clause (i).
 
                                      S-77
<PAGE>
    Interest  on Mortgage Loans prepaid  in full is accrued  only to the date of
such prepayment in full. Any interest  shortfall with respect to prepayments  in
full  will be offset only  to the extent of the  aggregate of the Servicing Fees
relating to mortgagor payments  or other recoveries  distributed on the  related
Distribution  Date. Any excess of such shortfall above the Servicing Fees in any
month will  result in  a pro  rata reduction  of interest  distributable to  the
holders  of each Subclass  of Class A  Certificates, the holders  of the Class M
Certificates and  the holders  of each  subclass of  the Class  B  Certificates.
Interest  shortfalls  resulting  from  the  timing  of  the  receipt  of partial
principal prepayments on the Mortgage Loans or from net liquidation proceeds  in
respect  of Liquidated Loans  will not be  offset by Servicing  Fees but will be
allocated first to the Class B Certificates until the Class B Principal  Balance
has  been reduced to zero, second to the  Class M Certificates until the Class M
Principal Balance has  been reduced  to zero and  finally to  the Subclasses  of
Class A Certificates. See "Description of the Certificates--Interest" herein and
"Prepayment and Yield Considerations" in the Prospectus.
 
    Interest  accrued on the Class A and Class M Certificates will be reduced by
the amount  of  any interest  portions  of  Realized Losses  allocated  to  such
Certificates  as  described  under "Description  of  the Certificates--Interest"
herein. The yield on  the Class A  Certificates (other than  the Class A-11  and
Class  A-12 Certificates)  and the  Class M Certificates  will be  less than the
yield otherwise produced by their  respective Pass-Through Rates and the  prices
at which the Class A and Class M Certificates are purchased because the interest
which accrues on the Mortgage Loans during each month will not be passed through
to  Certificateholders until the 25th day of the month following the end of such
month (or if such 25th day is not a business day, the following business day).
 
SENSITIVITY OF THE CLASS A-10 CERTIFICATES
 
    THE YIELD TO INVESTORS ON THE  CLASS A-10 CERTIFICATES WILL BE SENSITIVE  TO
BOTH  THE TIMING  OF RECEIPT  OF PREPAYMENTS AND  THE OVERALL  RATE OF PRINCIPAL
PREPAYMENT ON THE MORTGAGE  LOANS, WHICH RATE  MAY FLUCTUATE SIGNIFICANTLY  FROM
TIME  TO TIME. INVESTORS  SHOULD FULLY CONSIDER  THE ASSOCIATED RISKS, INCLUDING
THE RISK THAT A RAPID RATE  OF PRINCIPAL PAYMENTS (INCLUDING PREPAYMENTS)  COULD
RESULT  IN THE  FAILURE OF  INVESTORS IN  THE CLASS  A-10 CERTIFICATES  TO FULLY
RECOVER THEIR INITIAL INVESTMENTS.
 
    The following table indicates the sensitivity to various rates of prepayment
on the Mortgage  Loans of the  pre-tax yields  to maturity on  a corporate  bond
equivalent  ("CBE") basis of the Class  A-10 Certificates. Such calculations are
based on distributions made in accordance with "Description of the Certificates"
above, on the  assumptions described in  clauses (i) through  (v) of the  second
full  paragraph on page S-71 and on  the further assumptions that (i) each Class
A-10 Certificate will be purchased on August 28, 1992 at a purchase price  equal
to  6000% of the initial principal balance thereof plus accrued interest thereon
from August 1, 1992  to (but not  including) August 28,  1992, (ii) the  initial
Class  A Subclass  Principal Balance  of each  Subclass of  Class A Certificates
(other than the  Class A-18  Certificates) will  be as  set forth  on the  cover
hereof  and (iii) distributions to holders of  Class A Certificates will be made
on the 25th day of each month.
 
           SENSITIVITY OF THE CLASS A-10 CERTIFICATES TO PREPAYMENTS
 
<TABLE>
<CAPTION>
                                                 PERCENTAGES OF SPA
                                     -------------------------------------------
                                      75%    150%   270%   375%   500%    561%
                                     ------  -----  -----  -----  -----  -------
<S>                                  <C>     <C>    <C>    <C>    <C>    <C>
Pre-Tax Yield (CBE)................  11.82%  7.87%  7.62%  7.15%  2.81%   (0.05 )%
</TABLE>
 
    The pre-tax yields set forth in  the preceding table were calculated by  (i)
determining the monthly discount rates which, when applied to the assumed stream
of  cash  flows to  be  paid on  the Class  A-10  Certificates, would  cause the
discounted present  value of  such assumed  stream  of cash  flows to  equal  an
assumed  purchase price for  each Class A-10  Certificate equal to  6000% of the
initial principal balance thereof plus accrued interest and (ii) converting such
monthly rates to corporate bond equivalent rates. Such calculation does not take
into account  the interest  rates at  which investors  may be  able to  reinvest
 
                                      S-78
<PAGE>
funds  received  by them  as distributions  on the  Class A-10  Certificates and
consequently does not purport to reflect  the return on any investment in  Class
A-10 Certificates when such reinvestment rates are considered.
 
    NOTWITHSTANDING  THE  ASSUMED PREPAYMENT  RATES  REFLECTED IN  THE PRECEDING
TABLE, IT IS HIGHLY UNLIKELY THAT THE  MORTGAGE LOANS WILL PREPAY AT A  CONSTANT
RATE  UNTIL MATURITY OR THAT  ALL OF THE MORTGAGE LOANS  WILL PREPAY AT THE SAME
TIME. The Mortgage Loans initially included in the Trust Estate may differ  from
those  currently expected to be included in the Trust Estate, and thereafter may
be changed as a result of permitted substitutions. As a result of these factors,
the pre-tax yields  on the  Class A-10 Certificates  are likely  to differ  from
those  shown in  such table,  even if all  of the  Mortgage Loans  prepay at the
indicated percentages of SPA.
 
SENSITIVITY OF THE CLASS A-12 CERTIFICATES
 
    THE YIELD  TO  INVESTORS IN  THE  CLASS  A-12 CERTIFICATES  WILL  BE  HIGHLY
SENSITIVE  TO  THE  LEVEL OF  LIBOR  AND SENSITIVE  TO  THE RATE  AND  TIMING OF
PRINCIPAL PAYMENTS (INCLUDING PREPAYMENTS) OF THE MORTGAGE LOANS, WHICH RATE MAY
FLUCTUATE SIGNIFICANTLY FROM TIME TO TIME. A HIGH LEVEL OF LIBOR OR A HIGH  RATE
OF PREPAYMENTS WILL HAVE A MATERIAL NEGATIVE EFFECT ON THE YIELD TO INVESTORS IN
THE  CLASS  A-12 CERTIFICATES.  INVESTORS SHOULD  FULLY CONSIDER  THE ASSOCIATED
RISKS, INCLUDING THE RISK THAT INVESTORS IN THE CLASS A-12 CERTIFICATES MAY  NOT
FULLY RECOVER THEIR INTITIAL INVESTMENTS.
 
    Since  there can be no assurance that the level of LIBOR will correlate with
the levels of  prevailing mortgage  interest rates,  it is  possible that  lower
prevailing  mortgage  rates,  which  might  be  expected  to  result  in  faster
prepayments, could occur concurrently with an increased level of LIBOR. However,
if, as  generally  expected,  higher  mortgage  rates  and,  accordingly,  lower
prepayment  rates, were to occur concurrently  with an increased level of LIBOR,
the Pass-Through Rate  of the Class  A-12 Certificates would  be reduced at  the
same  time that the rate of distributions  in reduction of the principal balance
to such Subclass may be reduced.  In such circumstances, investors in the  Class
A-12  Certificates could have  a significantly lower  yielding instrument with a
longer weighted average life than anticipated.
 
    To illustrate  the  significance  of  changes in  the  level  of  LIBOR  and
prepayments  on the Class  A-12 Certificates, the  following table indicates the
pre-tax yields to  maturity (on  a corporate  bond equivalent  basis) under  the
assumptions  specified  in the  following  paragraph at  the  different constant
percentages of SPA and the constant levels of LIBOR indicated. It is not  likely
that  the Mortgage Loans will prepay at  a CONSTANT level of SPA until maturity,
that all of the Mortgage Loans will prepay at the same rate or that the level of
LIBOR will remain  constant. As discussed  above, the timing  of changes in  the
rate  of prepayments may significantly  affect the total distributions received,
the date of receipt of such distributions and the actual yield to maturity to an
investor in a  Class A-12  Certificate, even if  the average  rate of  principal
prepayments  is  consistent  with such  investor's  expectations.  Moreover, the
timing of changes in the level of LIBOR may affect the actual yield to  maturity
to  an  investor  in a  Class  A-12 Certificate  even  if the  average  level is
consistent with such investor's expectation.
 
    The following table has  been prepared on the  basis of the assumptions  set
forth  in clauses  (i) through  (v) of  the second  full paragraph  on page S-71
hereof, and the additional assumptions that (i) the aggregate purchase price for
the Class A-12 Certificates  is 3150% of the  initial principal balance  thereof
plus  three days of accrued interest, (ii) such purchase price is paid on August
28, 1992 and (iii)  on the Rate Determination  Date occurring in September  1992
and  each Rate Determination  Date thereafter, LIBOR is  at the level specified.
The Mortgage Loans will  not have all of  the characteristics assumed above  and
there  can be  no assurance that  the Mortgage Loans  will prepay at  any of the
constant rates shown  in the table  or at  any other particular  rate, that  the
pre-tax  yield to maturity on the Class A-12 Certificates will correspond to any
of the amounts  shown herein, that  the level  of LIBOR will  correspond to  the
levels  shown herein  or that  the aggregate  purchase price  of the  Class A-12
Certificates will be as assumed. The table does not constitute a  representation
as  to the correlation of any level of LIBOR with any rate of prepayments on the
Mortgage Loans.  Each investor  must  make an  independent  decision as  to  the
appropriate  prepayment assumptions  to be  used and  the appropriate  levels of
LIBOR to  be  assumed in  deciding  whether or  not  to purchase  a  Class  A-12
Certificate.
 
                                      S-79
<PAGE>
    The  pre-tax yields set forth in the  following table were calculated by (i)
determining the monthly discount rates which, when applied to the assumed stream
of cash  flows to  be  paid on  the Class  A-12  Certificates, would  cause  the
discounted  present  value of  such assumed  stream  of cash  flows to  equal an
assumed aggregate purchase price of such Class A-12 Certificates of 3150% of the
initial principal balance thereof plus three  days of accrued interest and  (ii)
converting   such  monthly  rates  to  corporate  bond  equivalent  rates.  Such
calculation does not take into account the interest rates at which investors may
be able to reinvest funds  received by them as  distributions on the Class  A-12
Certificates  and consequently  does not  purport to  reflect the  return on any
investment  in  Class  A-12  Certificates  when  such  reinvestment  rates   are
considered.
 
      SENSITIVITY OF THE CLASS A-12 CERTIFICATES TO PREPAYMENTS AND LIBOR
                                (PRE-TAX YIELDS)
 
<TABLE>
<CAPTION>
                                                   PERCENTAGES OF SPA
                                  ----------------------------------------------------
        LEVELS OF LIBOR             0%       75%     150%     270%     375%     500%
- --------------------------------  -------  -------  -------  -------  -------  -------
<S>                               <C>      <C>      <C>      <C>      <C>      <C>
2.375%..........................    46.08%   42.05%   36.36%   35.61%   35.07%   29.38%
3.375%..........................    38.14%   33.53%   27.24%   26.44%   25.79%   19.50%
4.375%..........................    30.03%   24.74%   17.78%   16.92%   16.15%    9.17%
5.375%..........................    21.59%   15.52%    7.78%    6.87%    5.95%  (1.82)%
6.375%..........................    12.54%    5.57%  (3.08)%  (4.04)%  (5.15)% (13.82)%
7.375%..........................     2.30%  (5.75)% (15.46)% (16.46)% (17.81)% (27.52)%
8.375%..........................  (10.72)% (20.05)% (30.97)% (31.98)% (33.63)% (44.50)%
9.350% and above................  (34.45)% (44.20)% (55.44)% (56.28)% (58.16)% (69.36)%
</TABLE>
 
                        POOLING AND SERVICING AGREEMENT
 
GENERAL
 
    The  Series 1992-26  Certificates will be  issued pursuant to  a Pooling and
Servicing Agreement to be dated as of the date of initial issuance of the Series
1992-26 Certificates (the "Pooling and  Servicing Agreement") among the  Seller,
the  Servicer and the Trustee. Reference is made to the Prospectus for important
additional information regarding  the terms  and conditions of  the Pooling  and
Servicing Agreement and the Series 1992-26 Certificates. See "Description of the
Certificates,"  "Servicing of the Mortgage Loans" and "The Pooling and Servicing
Agreement" in the Prospectus. Distributions  (other than the final  distribution
in  retirement of the Class  A Certificates of each Subclass  and of the Class M
Certificates) will be made by check mailed to the address of the person entitled
thereto as it appears on the Certificate Register. However, with respect to  any
holder  of  an  Offered  Certificate  (other  than  a  Class  A-10  Certificate)
evidencing at least  a $5,000,000 initial  principal balance, or  any holder  of
Class  A-10 Certificate evidencing at least a $10,000 initial principal balance,
distributions will  be  made  on  the Distribution  Date  by  wire  transfer  in
immediately  available funds,  provided that the  Servicer, or  the paying agent
acting on behalf  of the Servicer,  shall have been  furnished with  appropriate
wiring  instructions  not less  than seven  business days  prior to  the related
Distribution Date. The final distribution in respect of each Class A and Class M
Certificate will be made only upon presentation and surrender of such Class A or
Class M Certificate at the office  or agency appointed by the Trustee  specified
in  the notice  of final  distribution with respect  to the  related Subclass or
Class.
 
    Unless Definitive Certificates are issued  as described above, the  Servicer
and  the Trustee will treat DTC as the Holder of the Book-Entry Certificates for
all purposes, including  making distributions  thereon and  taking actions  with
respect  thereto. DTC will make book-entry transfers among its participants with
respect to the Book-Entry  Certificates; it will  also receive distributions  on
the  Book-Entry Certificates from the Trustee  and transmit them to participants
for distribution to Beneficial Owners or their nominees.
 
                                      S-80
<PAGE>
VOTING
 
    With respect  to  any provisions  of  the Pooling  and  Servicing  Agreement
providing  for the  action, consent  or approval  of the  holders of  all Series
1992-26 Certificates evidencing specified Voting Interests in the Trust  Estate,
the  holders of the  Class A Certificates  will collectively be  entitled to the
then applicable Class A Percentage, and the holders of the Class M  Certificates
will collectively be entitled to the then applicable percentage of the aggregate
Voting  Interest  represented by  all  Series 1992-26  Certificates  obtained by
dividing the then-outstanding Class M Principal Balance by the sum of the  then-
outstanding  Class A  Principal Balance, Class  M Principal Balance  and Class B
Principal Balance and the holders of the Class B Certificates will  collectively
be  entitled to the balance of the  aggregate Voting Interest represented by all
Series 1992-26  Certificates. The  aggregate  Voting Interests  of the  Class  A
Certificates  other than the Class A-18 Certificates, on any date will be 97% of
the Class A Percentage on such date. The aggregate Voting Interest of the  Class
A-18 Certificates on any date will be 3% of the Class A Percentage on such date.
The  aggregate Voting Interests  of each Subclass of  Class A Certificates other
than the Class A-18 Certificates on any date will be equal to the product of (a)
97% of the  Class A Percentage  on such date  and (b) the  fraction obtained  by
dividing the Class A Subclass Principal Balance of such Subclass on such date by
the  aggregate Class  A Subclass Principal  Balance of the  Class A Certificates
other than  the Class  A-18  Certificates on  such  date. The  aggregate  Voting
Interests of the Class M Certificates on any date will be 100% of the percentage
described   above   for   the  Class   M   Certificates  on   such   date.  Each
Certificateholder of a Class  or Subclass will have  a Voting Interest equal  to
the  product  of  the  Voting  Interest  to  which  such  Class  or  Subclass is
collectively entitled  and the  Percentage Interest  in such  Class or  Subclass
represented by such holder's Certificates. With respect to any provisions of the
Pooling  and Servicing  Agreement providing for  action, consent  or approval of
each Class or  Subclass of Certificates  or specified Classes  or Subclasses  of
Certificates,  each Certificateholder of a Subclass  will have a Voting Interest
in such Subclass equal  to such holder's Percentage  Interest in such  Subclass.
Unless  Definitive Certificates are issued as described above, Beneficial Owners
of Book-Entry  Certificates  may  exercise  their  voting  rights  only  through
Participants.
 
TRUSTEE
 
    The Trustee for the Series 1992-26 Certificates will be First Trust National
Association,  a national banking association. The  Corporate Trust Office of the
Trustee is located at 180 East Fifth Street, St. Paul, Minnesota 55101. See "The
Pooling and Servicing Agreement--The Trustee" in the Prospectus.
 
SERVICING COMPENSATION AND PAYMENT OF EXPENSES
 
    The Servicing Fee paid to the Servicer with respect to the servicing of each
Mortgage Loan  included  in  the  Trust Estate  underlying  the  Series  1992-26
Certificates  and administrative services provided by it will be 0.20% per annum
of the  outstanding principal  balance  of each  such  Mortgage Loan.  No  Fixed
Retained  Yield (as defined in the Prospectus)  will be retained with respect to
any of the Mortgage Loans. See "Servicing of the Mortgage Loans--Fixed  Retained
Yield,  Servicing Compensation  and Payment of  Expenses" in  the Prospectus for
information regarding other possible compensation to the Servicer. The  Servicer
will  pay all routine expenses incurred  in connection with its responsibilities
under the  Pooling  and  Servicing  Agreement,  subject  to  certain  rights  of
reimbursement  as  described in  the Prospectus.  The  servicing fees  and other
expenses of the Upper-Tier REMIC and  the Lower-Tier REMIC will be allocated  to
holders  of the Class A-R Certificate  and Class A-LR Certificate, respectively,
who are  individuals,  estates, or  trusts  (whether such  Certificate  is  held
directly  or through certain  pass-through entities) as  additional gross income
without a corresponding  distribution of  cash, and  any such  investor (or  its
owners,  in the case of a pass-through entity)  may be limited in its ability to
deduct such expenses for regular tax purposes and may not be able to deduct such
expenses to  any  extent for  alternative  minimum tax  purposes.  See  "Certain
Federal  Income  Tax  Consequences--Federal Income  Tax  Consequences  for REMIC
Certificates--Limitations on Deduction of Certain Expenses" in the Prospectus.
 
OPTIONAL TERMINATION
 
    At its option, the Servicer may purchase from the Trust Estate all remaining
Mortgage Loans,  and  thereby effect  early  retirement of  the  Series  1992-26
Certificates, on any Distribution Date when the Pool
 
                                      S-81
<PAGE>
Scheduled  Principal  Balance is  less than  10% of  the Cut-Off  Date Aggregate
Principal Balance. Any  such purchase  will be made  only in  connection with  a
"qualified  liquidation" of the Upper-Tier REMIC and the Lower-Tier REMIC within
the meaning  of Section  860F(a)(4)(A) of  the Code.  The purchase  price  will,
generally,  be equal to the greater of  (i) the unpaid principal balance of each
Mortgage Loan plus the fair market value  of other property in the Trust  Estate
and  (ii) the fair market value of the Trust Estate's assets plus, in each case,
accrued  interest.  See  "The  Pooling  and  Servicing   Agreement--Termination;
Purchase of Mortgage Loans" in the Prospectus.
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
    For  federal  income tax  purposes,  the Trust  Estate  will consist  of two
segregated asset  groupings, which  will each  qualify as  a REMIC  for  federal
income  tax  purposes. One  REMIC (the  "Lower-Tier  REMIC") will  issue certain
uncertificated interests (each, a "Lower-Tier REMIC Regular Interest"), each  of
which  will be designated as a regular interest in the Lower-Tier REMIC, and the
Class A-LR Certificate, which will be designated as the residual interest in the
Lower-Tier REMIC. The assets of the  Lower-Tier REMIC will include the  Mortgage
Loans,  together with the amounts held by  the Servicer in a separate account in
which collections  on the  Mortgage Loans  will be  deposited (the  "Certificate
Account"),   the  hazard  insurance  policies  and  primary  mortgage  insurance
policies, if any, relating to the Mortgage Loans and any property which  secured
a Mortgage Loan which is acquired by foreclosure or deed in lieu of foreclosure.
 
    The  second REMIC (the "Upper-Tier REMIC")  will issue all Subclasses of the
Class A Certificates other than the Class A-LR Certificate. The Class A-1, Class
A-2, Class A-3, Class  A-4, Class A-5,  Class A-6, Class  A-7, Class A-8,  Class
A-9,  Class A-10, Class  A-11, Class A-12,  Class A-13, Class  A-14, Class A-15,
Class  A-16  and  Class   A-17  Certificates  and   the  Class  M   Certificates
(collectively,   the  "Regular  Certificates")  together  with  the  Class  A-18
Certificates and each subclass of the  Class B Certificates, will be  designated
as regular interests in the Upper-Tier REMIC, and the Class A-R Certificate will
be  designated as  the residual  interest in  the Upper-Tier  REMIC. The regular
interests and the  residual interest  in the  Upper-Tier REMIC  are referred  to
herein  collectively as the  "Upper-Tier Certificates." The  Class A-R and Class
A-LR Certificates are  "Residual Certificates" for  purposes of the  Prospectus.
The  assets of the  Upper-Tier REMIC will  include the uncertificated Lower-Tier
REMIC Regular Interests  and a separate  account in which  distributions on  the
uncertificated  Lower-Tier  REMIC  Regular  Interests  will  be  deposited.  The
aggregate amount  distributed to  the holders  of the  Upper-Tier  Certificates,
payable from such separate account, will be equal to the aggregate distributions
in  respect of the Mortgage Loans on the uncertificated Lower-Tier REMIC Regular
Interests.
 
    The Offered Certificates will be treated as "qualifying real property loans"
for mutual savings banks and  domestic building and loan associations,  "regular
or  residual interests in a REMIC"  for domestic building and loan associations,
and "real  estate assets"  for  real estate  investment  trusts, to  the  extent
described in the Prospectus.
 
REGULAR CERTIFICATES
 
    The  Regular Certificates generally will be  treated as debt instruments for
federal income  tax  purposes.  Holders  of the  Regular  Certificates  will  be
required  to report income  on such Certificates in  accordance with the accrual
method of accounting. The Class A-5,  Class A-6 and Class A-8 Certificates  will
be  issued with original issue  discount for federal income  tax purposes, in an
amount equal to the excess of the initial principal balances thereof (plus three
days of interest  at the  Pass-Through Rates  thereon) over  their issue  prices
(including  accrued interest). It is also  anticipated that the Class A-1, Class
A-2, Class A-3,  Class A-13,  Class A-14,  Class A-16,  Class A-17  and Class  M
Certificates  will be  issued at a  premium and  that the Class  A-4, Class A-7,
Class A-9,  Class A-11  and Class  A-15  Certificates will  not be  issued  with
original  issue discount for federal income tax purposes. Although not free from
doubt, it is anticipated that the Class A-10 and Class A-12 Certificates will be
issued with original  issue discount in  an amount  equal to the  excess of  all
distributions  of  principal  and  interest  thereon  over  their  issue  prices
(including accrued interest), and the Seller intends to report income in respect
of such  Subclasses of  Certificates  in this  manner.  Under this  method,  any
"negative" amounts of original issue
 
                                      S-82
<PAGE>
discount  attributable to rapid  prepayments would not  be deductible currently,
but most likely  would be offset  against future positive  accruals of  original
issue, if any. Finally, the holder of a Class A-10 or Class A-12 Certificate may
be  entitled to  a loss  deduction to  the extent  it becomes  certain that such
holder will not recover a portion of its basis in such Certificate, assuming  no
further  prepayments. The Class A-18 Certificates (not offered hereby) also will
be treated  as  issued with  original  issue  discount for  federal  income  tax
purposes.
 
    The  Prepayment Assumption (as defined in the Prospectus) that is to be used
in determining the rate  of accrual of original  issue discount and whether  the
original  issue discount  is considered DE  MINIMIS, and  that may be  used by a
holder of a Regular  Certificate to amortize premium,  will be calculated  using
270%  SPA. No representation is made as to the actual rate at which the Mortgage
Loans will prepay.
 
RESIDUAL CERTIFICATES
 
    The holders of the  Class A-R and Class  A-LR Certificates must include  the
taxable  income  or  loss of  the  Upper-Tier  REMIC and  the  Lower-Tier REMIC,
respectively, in determining  their federal  taxable income. The  Class A-R  and
Class  A-LR Certificates will remain outstanding for federal income tax purposes
until there  are no  Certificates of  any other  Class outstanding.  PROSPECTIVE
INVESTORS  ARE CAUTIONED  THAT THE  CLASS A-R  CERTIFICATEHOLDER'S REMIC TAXABLE
INCOME  AND   THE   TAX   LIABILITY   THEREON   WILL,   AND   THE   CLASS   A-LR
CERTIFICATEHOLDER'S  REMIC  TAXABLE INCOME  AND THE  TAX LIABILITY  THEREON MAY,
EXCEED CASH DISTRIBUTIONS TO SUCH HOLDERS DURING CERTAIN PERIODS, IN WHICH EVENT
THE HOLDERS THEREOF  MUST HAVE SUFFICIENT  ALTERNATIVE SOURCES OF  FUNDS TO  PAY
SUCH  TAX LIABILITY.  Furthermore, it is  anticipated that all  or a substantial
portion of  the taxable  income of  the Upper-Tier  REMIC and  Lower-Tier  REMIC
includible  by  the  holders  of  the Class  A-R  and  Class  A-LR Certificates,
respectively, will be treated as "excess inclusion" income, resulting in (i) the
inability of such holder to use net operating losses to offset such income  from
the  respective REMIC, (ii) the treatment  of such income as "unrelated business
taxable income" to certain holders who  are otherwise tax-exempt, and (iii)  the
treatment  of such income as subject to  30% withholding tax to certain non-U.S.
investors, with no exemption or treaty reduction.
 
    Under proposed  Treasury  regulations  (the  "Proposed  REMIC  Regulations")
released  by the Internal Revenue Service on  September 27, 1991, since the fair
market value of the Class A-R and Class A-LR Certificates will not exceed 2%  of
the   fair  market  value   of  the  Upper-Tier   REMIC  and  Lower-Tier  REMIC,
respectively,  the  Class  A-R  and  Class  A-LR  Certificates  will  not   have
"significant  value," and  thrift institutions will  not be  permitted to offset
their net operating losses  against such excess  inclusion income. In  addition,
under  the Proposed REMIC  Regulations, the Class A-R  Certificate will, and the
Class A-LR Certificate may, be considered "noneconomic residual interests," with
the result that transfers  thereof would be disregarded  for federal income  tax
purposes if any significant purpose of the transfer was to impede the assessment
or  collection of tax. Accordingly, the  transferee affidavit used for transfers
of the Class  A-R and  Class A-LR Certificates  will require  the transferee  to
state,  among other things, that it has no intention to impede the assessment or
collection of any federal,  state or local income  taxes legally required to  be
paid  with respect to the  Class A-R or Class A-LR  Certificate and that it will
not transfer the Class  A-R or Class  A-LR Certificate to  any person or  entity
that  it has  reason to believe  has the  intention to impede  the assessment or
collection of such  taxes. Finally, the  Class A-R and  Class A-LR  Certificates
generally may not be transferred to persons who are not U.S. Persons (as defined
herein).  See "Description of the  Certificates--Restrictions on Transfer of the
Class A-R, Class  A-LR and  Class M  Certificates" herein  and "Certain  Federal
Income   Tax   Consequences--Federal   Income   Tax   Consequences   for   REMIC
Certificates--Taxation of the  Residual Certificates--Limitations  on Offset  or
Exemption  of  REMIC  Income"  and "--Tax-Related  Restrictions  on  Transfer of
Residual Certificates--Noneconomic Residual Interests" in the Prospectus.
 
    Under proposed Treasury regulations relating to original issue discount, the
Lower-Tier REMIC Regular Interests would be treated as a single debt  instrument
for  original issue discount  purposes because they  will be issued  in a single
transaction   to   a   single   holder   (the   Upper-Tier   REMIC).    Although
 
                                      S-83
<PAGE>
there  can be  no assurance that  final regulations will  apply this aggregation
rule to  the  Lower-Tier  REMIC  Regular  Interests,  the  Servicer  intends  to
calculate  the  taxable  income  (or  net  loss)  of  the  Upper-Tier  REMIC and
Lower-Tier  REMIC   (and  to   report  to   the  Class   A-R  and   Class   A-LR
Certificateholders)  by  treating the  Lower-Tier REMIC  Regular Interests  as a
single debt instrument. A failure of  the Lower-Tier REMIC Regular Interests  to
qualify  as a single debt instrument  for original issue discount purposes could
have a material adverse impact on the timing of taxable income to the Class A-LR
Certificateholder.
 
    An individual,  trust or  estate that  holds  the Class  A-R or  Class  A-LR
Certificate  (whether such  Certificate is  held directly  or indirectly through
certain pass-through  entities)  also  may have  additional  gross  income  with
respect to, but may be subject to limitations on the deductibility of, Servicing
Fees  on the Mortgage Loans and other administrative expenses properly allocable
to the Upper-Tier REMIC or the Lower-Tier REMIC, respectively, in computing such
holder's regular tax  liability, and  may not  be able  to deduct  such fees  or
expenses  to  any  extent in  computing  such holder's  alternative  minimum tax
liability. In addition,  some portion  of a purchaser's  basis, if  any, in  the
Class  A-R or Class A-LR  Certificate may not be  recovered until termination of
the respective REMIC. Furthermore,  the federal income  tax consequences of  any
consideration  paid to a transferee on a transfer of the Class A-R or Class A-LR
Certificate are unclear; any such transferee receiving such consideration should
consult its tax advisors.
 
    Legislation has been proposed that would  generally treat all partners in  a
"large   partnership"  as   Disqualified  Organizations   (as  defined   in  the
Prospectus),  thus  subjecting  such  a   partnership  to  tax  annually  as   a
Pass-Through  Entity  (as  defined  in  the Prospectus)  on  all  of  its excess
inclusion income  at the  highest  corporate rate.  The legislation  would  also
disallow  70%  of  any large  partnership's  miscellaneous  itemized deductions,
including the deductions  for Servicing  Fees on  the Mortgage  Loans and  other
administrative  expenses  properly  allocable to  the  Class A-R  or  Class A-LR
Certificate, as the case may be, although the remaining deductions would not  be
subject   to  the  applicable  limitations  at   the  partner  level.  A  "large
partnership" generally would include a partnership having 250 or more  partners.
This proposed legislation, which was to be effective for taxable years ending on
or  after December 31, 1992  was included in a Bill  that was passed by Congress
but vetoed  by  the President  on  March 20,  1992.  Such legislation  has  been
reintroduced  and is  pending in Congress.  No prediction can  be made regarding
whether such  legislation  will be  enacted.  See "Certain  Federal  Income  Tax
Consequences--  Federal Income Tax Consequences for REMIC Certificates--Taxation
of Residual  Certificates--Tax-Related  Restrictions  on  Transfer  of  Residual
Certificates"  and  "--Limitations  on  Deduction of  Certain  Expenses"  in the
Prospectus.
 
    DUE TO  THE  SPECIAL TAX  TREATMENT  OF RESIDUAL  INTERESTS,  THE  EFFECTIVE
AFTER-TAX   RETURN  OF  THE  CLASS  A-R  AND  CLASS  A-LR  CERTIFICATES  MAY  BE
SIGNIFICANTLY LOWER THAN  WOULD BE  THE CASE  IF THE  CLASS A-R  AND CLASS  A-LR
CERTIFICATES WERE TAXED AS DEBT INSTRUMENTS.
 
                              ERISA CONSIDERATIONS
 
    Neither  the Class  A-R Certificate  nor the  Class A-LR  Certificate may be
purchased by or  transferred to  any person which  is an  employee benefit  plan
within  the meaning of  Section 3(3) of,  and which is  subject to the fiduciary
duty rules  of Title  1, Sections  401-414 of,  the Employee  Retirement  Income
Security  Act of 1974, as amended ("ERISA"),  or Code Section 4975 or any person
utilizing  the  assets  of  such  employee  benefit  plan  (an  "ERISA   Plan").
Accordingly,   the  following  discussion  does   not  purport  to  discuss  the
considerations under ERISA or  Code Section 4975 with  respect to the  purchase,
acquisition or resale of the Class A-R or Class A-LR Certificate.
 
    In  addition, under  current law  the purchase  and holding  of the  Class M
Certificates by  or  on  behalf of  an  ERISA  Plan may  result  in  "prohibited
transactions" within the meaning of ERISA and Code Section 4975. Transfer of the
Class  M Certificates  will not  be made  unless the  transferee (i)  executes a
representation letter in form and substance satisfactory to the Trustee  stating
that it is not, and is not acting on behalf of, any such ERISA Plan or using the
assets  of  any such  ERISA Plan  to effect  such purchase  or (ii)  provides an
opinion of counsel in  form and substance satisfactory  to the Trustee that  the
purchase  or holding of the  Class M Certificates by or  on behalf of such ERISA
Plan will not result in the assets of the
 
                                      S-84
<PAGE>
Trust Estate being  deemed to  be "plan assets"  and subject  to the  prohibited
transaction  provisions of ERISA and the Code and will not subject the Servicer,
the Seller or the Trustee to any  obligation in addition to those undertaken  in
the  Pooling and  Servicing Agreement. The  Class M Certificates  will contain a
legend describing such restrictions  on transfer and  the Pooling and  Servicing
Agreement  will provide that any attempted or purported transfer in violation of
these transfer restrictions will be null and void and will vest no rights in any
purported transferee. Accordingly, the following discussion does not purport  to
discuss  the considerations under ERISA or Code Section 4975 with respect to the
purchase, acquisition  or  resale  of the  Class  A-R,  Class A-LR  or  Class  M
Certificates.
 
    As  described in the Prospectus under  "ERISA Considerations," ERISA and the
Code impose certain duties and restrictions  on ERISA Plans and certain  persons
who  perform services for ERISA Plans.  For example, unless exempted, investment
by an  ERISA  Plan in  the  Offered  Certificates may  constitute  a  prohibited
transaction  under ERISA or the Code. There are certain exemptions issued by the
United States  Department of  Labor (the  "DOL") that  may be  applicable to  an
investment  by  an  ERISA  Plan  in  the  Offered  Certificates,  including  the
individual administrative exemption described  below and Prohibited  Transaction
Class  Exemption 83-1 ("PTE  83-1"). For a further  discussion of the individual
administrative exemption and  PTE 83-1,  including the  necessary conditions  to
their  applicability, and other  important factors to be  considered by an ERISA
Plan  contemplating   investing  in   the  Offered   Certificates,  see   "ERISA
Considerations" in the Prospectus.
 
    On   May  24,  1990,  the  DOL  issued  to  the  Underwriter  an  individual
administrative exemption, Prohibited Transaction  Exemption 90-28, 55 Fed.  Reg.
21456  (the "Exemption"),  from certain of  the prohibited  transaction rules of
ERISA with  respect to  the initial  purchase, the  holding and  the  subsequent
resale  by an ERISA  Plan of certificates  in pass-through trusts  that meet the
conditions and requirements of the Exemption.  The Exemption might apply to  the
acquisition,  holding and  resale of  the Offered  Certificates, other  than the
Class A-R, Class A-LR or Class M  Certificates, by an ERISA Plan, provided  that
specified conditions are met.
 
    Among  the conditions which would have to  be satisfied for the Exemption to
apply to the  acquisition by an  ERISA Plan of  the Offered Certificates,  other
than  the Class A-R, Class A-LR and  Class M Certificates, is the condition that
the ERISA Plan investing in the Offered Certificates be an "accredited investor"
as defined in  Rule 501(a)(1)  of Regulation D  of the  Securities and  Exchange
Commission under the Securities Act.
 
    Before  purchasing an Offered  Certificate, other than  the Class A-R, Class
A-LR or Class M Certificates, a fiduciary  of an ERISA Plan should make its  own
determination  as to  the availability of  the exemptive relief  provided in the
Exemption or the  availability of  any other  prohibited transaction  exemptions
(including  PTE 83-1), and whether the conditions  of any such exemption will be
applicable to the Offered Certificates, other than the Class A-R, Class A-LR and
Class M Certificates.  Any fiduciary  of an  ERISA Plan  considering whether  to
purchase  an Offered Certificate, other than the Class A-R, Class A-LR and Class
M Certificates, should  also carefully review  with its own  legal advisors  the
applicability  of the  fiduciary duty  and prohibited  transaction provisions of
ERISA and  the  Code to  such  investment.  See "ERISA  Considerations"  in  the
Prospectus.
 
                                LEGAL INVESTMENT
 
    The  Offered  Certificates  constitute  "mortgage  related  securities"  for
purposes  of  the  Secondary  Mortgage  Market  Enhancement  Act  of  1984  (the
"Enhancement  Act") so long as  they are rated in one  of the two highest rating
categories  by   at  least   one   nationally  recognized   statistical   rating
organization.  As  such,  the  Offered Certificates  are  legal  investments for
certain entities  to  the  extent  provided in  the  Enhancement  Act.  However,
institutions subject to the jurisdiction of the Office of the Comptroller of the
Currency,  the Board  of Governors  of the  Federal Reserve  System, the Federal
Deposit Insurance Corporation,  the Office of  Thrift Supervision, the  National
Credit  Union Administration  or state  banking or  insurance authorities should
review applicable rules, supervisory policies  and guidelines of these  agencies
before  purchasing any of the Offered Certificates, to determine whether certain
Subclasses of
 
                                      S-85
<PAGE>
the Class A Certificates  or the Class M  Certificates are suitable  investments
under  one or more of  these rules, policies and  guidelines and whether certain
restrictions may  apply  to investments  in  other  Subclasses of  the  Class  A
Certificates  or the Class M Certificates. It  should also be noted that certain
states recently have enacted, or have proposed enacting, legislation limiting to
varying extents  the  ability  of  certain  entities  (in  particular  insurance
companies)  to invest in  mortgage related securities.  Investors should consult
with their own legal advisors in determining whether and to what extent  Offered
Certificates  constitute  legal  investments  for  such  investors.  See  "Legal
Investment" in the Prospectus.
 
                                SECONDARY MARKET
 
    There will not  be any market  for the Offered  Certificates offered  hereby
prior  to the issuance thereof. The Underwriter intends to act as a market maker
in the Offered  Certificates, subject  to applicable provisions  of federal  and
state  securities  laws  and  other regulatory  requirements,  but  is  under no
obligation to do so. There  can be no assurance that  a secondary market in  the
Offered  Certificates will develop  or, if such  a market does  develop, that it
will provide holders of Offered Certificates with liquidity of investment at any
particular time or for the life of the Offered Certificates.
 
                                  UNDERWRITING
 
    Subject to the terms and conditions  of the underwriting agreement dated  as
of  July  29, 1992  (the "Underwriting  Agreement") among  the Seller,  PHMC and
Kidder, Peabody  & Co.  Incorporated, as  underwriter (the  "Underwriter"),  the
Offered  Certificates offered hereby are being  purchased from the Seller by the
Underwriter upon issuance. The Underwriter is  committed to purchase all of  the
Offered  Certificates if any Offered Certificates are purchased. The Underwriter
has advised the Seller that it proposes to offer the Offered Certificates,  from
time  to  time,  for sale  in  negotiated  transactions or  otherwise  at prices
determined at the  time of sale.  Proceeds to the  Seller from the  sale of  the
Offered Certificates will be approximately 102.6640625% of the initial aggregate
principal balance of the Offered Certificates, plus accrued interest thereon and
on the aggregate initial principal balance of the Class A-18 Certificates at the
rate  of 7.50% per annum  from August 1, 1992 to  (but not including) August 28,
1992, before deducting expenses payable by the Seller. The Underwriter, which is
not an affiliate of the Seller, has advised the Seller that the Underwriter  has
not  allocated the  purchase price  paid to the  Seller among  the Subclasses or
Classes  of  Offered  Certificates.  The   Underwriter  and  any  dealers   that
participate with the Underwriter in the distribution of the Offered Certificates
may  be deemed to be underwriters, and  any discounts or commissions received by
them and any profit on the resale of Offered Certificates by them may be  deemed
to  be underwriting discounts or commissions,  under the Securities Act of 1933,
as amended (the "Securities Act").
 
    The Underwriting Agreement provides that the Seller and PHMC will  indemnify
the  Underwriter against certain  civil liabilities under  the Securities Act or
contribute to payments which the Underwriter may be required to make in  respect
thereof.
 
                                 LEGAL MATTERS
 
    Certain  legal matters in  connection with the  Offered Certificates offered
hereby will be passed upon for the Seller by Cadwalader, Wickersham & Taft,  New
York, New York, and for the Underwriter by Brown & Wood, New York, New York.
 
                                USE OF PROCEEDS
 
    The  net proceeds to be  received from the sale  of the Offered Certificates
offered hereby will be applied  by the Seller to the  purchase from PHMC of  the
Mortgage  Loans represented by  the Series 1992-26  Certificates. It is expected
that PHMC will  use the  proceeds from  the sale of  the Mortgage  Loans to  the
Seller  for its  general business  purposes, including,  without limitation, the
origination or acquisition of new mortgage loans and the repayment of borrowings
incurred to  finance  the  origination  or acquisition  of  the  Mortgage  Loans
underlying the Series 1992-26 Certificates.
 
                                      S-86
<PAGE>
                                    RATINGS
 
    It  is a  condition to the  issuance of  the Class A  Certificates that each
Subclass will have  been rated  "Aaa" by  Moody's and "AAA"  by Fitch.  It is  a
condition  to the issuance of the Class M Certificates that they shall have been
rated "Aa2"  by  Moody's  and  "AA"  by  Fitch.  A  security  rating  is  not  a
recommendation to buy, sell or hold securities and may be subject to revision or
withdrawal  at any  time by  the assigning  rating agency.  Each security rating
should be evaluated independently of any other security rating.
 
    The ratings of  Moody's on  mortgage pass-through  certificates address  the
likelihood  of the receipt  by certificateholders of  all distributions to which
such certificateholders  are  entitled.  Moody's  rating  opinions  address  the
structural,   legal,  issuer   and  tax-related  aspects   associated  with  the
certificates, including  the nature  of the  underlying mortgage  loans and  the
credit  quality  of the  credit  support provider,  if  any. Moody's  ratings on
pass-through certificates do not represent any assessment of the likelihood that
principal prepayments may differ from those originally anticipated.
 
    The ratings  of  Fitch on  mortgage  pass-through certificates  address  the
likelihood  of the receipt  by certificateholders of  all distributions to which
such certificateholders  are  entitled.  Fitch's  rating  opinions  address  the
structural  and legal  aspects associated  with the  certificates, including the
nature of  the  underlying  mortgage  loans.  Fitch's  ratings  on  pass-through
certificates  do  not represent  any  assessment of  the  likelihood or  rate of
principal prepayments.
 
    The ratings of Moody's and Fitch do  not address the possibility that, as  a
result  of principal  prepayments, Certificateholders  may receive  a lower than
anticipated yield  or  that  the  holders  of the  Class  A-10  and  Class  A-12
Certificates may fail to fully recover their initial investments.
 
    The  Seller has not  requested a rating  on the Offered  Certificates of any
Subclass or Class by any rating agency other than Moody's and Fitch and has  not
provided  any information with respect to the Mortgage Loans to any other rating
agency. There can be no assurance that  any rating assigned by any other  rating
agency  to the Offered Certificates will be as high as those assigned by Moody's
and Fitch.
 
                                      S-87
<PAGE>
                              INDEX OF SIGNIFICANT
                       PROSPECTUS SUPPLEMENT DEFINITIONS
 
<TABLE>
<CAPTION>
TERM                                                                       PAGE
- -------------------------------------------------------------------------  -----
<S>                                                                        <C>
Adjustment Amount........................................................  S-55
Adjusted Class A Principal Distribution Amount...........................  S-33
Adjusted Pool Amount.....................................................  S-25
Bankruptcy Coverage Termination Date.....................................  S-56
Bankruptcy Loss..........................................................  S-30
Bankruptcy Loss Amount...................................................  S-56
Beneficial Owner.........................................................  S-20
Book-Entry Certificates..................................................   S-6
Book-Entry Nominee.......................................................  S-52
CBE......................................................................  S-78
Cede.....................................................................  S-20
Certificate Account......................................................  S-82
Class A Certificates.....................................................  Cover
Class A Distribution Amount..............................................  S-23
Class A Optimal Amount...................................................  S-51
Class A Optimal Principal Amount.........................................  S-29
Class A Percentage.......................................................  S-30
Class A Prepayment Percentage............................................  S-30
Class A Principal Balance................................................  S-25
Class A Principal Distribution Amount....................................  S-29
Class A Subclass Interest Accrual Amount.................................  S-24
Class A Subclass Interest Shortfall Amount...............................  S-27
Class A Subclass Principal Balance.......................................  S-25
Class A-18 Notional Amount...............................................  S-26
Class A-LR Notional Amount...............................................  S-26
Class B Certificates.....................................................  Cover
Class B Principal Balance................................................  S-25
Class B Subclass Interest Accrual Amount.................................  S-25
Class B Subclass Principal Balance.......................................  S-25
Class M Certificates.....................................................  Cover
Class M Distribution Amount..............................................  S-23
Class M Interest Accrual Amount..........................................  S-25
Class M Interest Shortfall Amount........................................  S-27
Class M Optimal Principal Amount.........................................  S-31
Class M Percentage.......................................................  S-32
Class M Prepayment Percentage............................................  S-32
Class M Principal Balance................................................  S-25
Class M Principal Distribution Amount....................................  S-31
Code.....................................................................  S-19
Companion Components.....................................................   S-6
Component................................................................  S-32
Component Principal Balance..............................................  S-32
Cooperatives.............................................................  S-57
Co-op Shares.............................................................  S-57
Cross-Over Date..........................................................  S-54
Current Class B-1 Subordination Level....................................  S-32
Current Class B-2 Subordination Level....................................  S-32
Current Class M Subordination Level......................................  S-32
Cut-Off Date Aggregate Principal Balance.................................  S-57
</TABLE>
 
                                      S-88
<PAGE>
<TABLE>
<CAPTION>
TERM                                                                       PAGE
- -------------------------------------------------------------------------  -----
<S>                                                                        <C>
Debt Service Reduction...................................................  S-30
Deficient Valuation......................................................  S-30
Definitive Certificates..................................................  S-20
Depository Agreement.....................................................  S-52
Determination Date.......................................................  S-22
Distribution Date........................................................  S-22
DTC......................................................................   S-6
Enhancement Act..........................................................  S-85
Excess Bankruptcy Losses.................................................  S-56
Excess Fraud Losses......................................................  S-56
Excess Principal Payments................................................  S-50
Excess Special Hazard Losses.............................................  S-55
Fitch....................................................................   S-4
Fixed 15-year Non-Relocation Program Loans...............................  S-64
Fixed Program Loans......................................................  S-64
Fraud Coverage Termination Date..........................................  S-56
Fraud Loss...............................................................  S-30
Fraud Loss Amount........................................................  S-56
Indirect Participants....................................................  S-20
LIBOR....................................................................  S-24
LIBOR Based Interest Accrual Period......................................  S-24
Liquidated Loan..........................................................  S-29
Liquidated Loan Loss.....................................................  S-29
Lower-Tier REMIC.........................................................  S-82
Moody's..................................................................   S-4
Mortgage Loans...........................................................   S-2
Mortgaged Properties.....................................................  S-57
Mortgages................................................................  S-57
Net Foreclosure Profits..................................................  S-51
Net Mortgage Interest Rate...............................................  S-26
Non-Supported Interest Shortfall.........................................  S-26
Offered Certificates.....................................................  Cover
Original Class B-1 Subordination Level...................................  S-32
Original Class B-2 Subordination Level...................................  S-32
Original Class M Subordination Level.....................................  S-32
PAC Certificates.........................................................   S-5
PAC Components...........................................................   S-6
PAC Principal Amount.....................................................  S-35
PAC I Certificates.......................................................  Cover
PAC I Components.........................................................  S-33
PAC II Certificates......................................................  Cover
PAC II Components........................................................  S-33
Participants.............................................................  S-20
Percentage Interest......................................................  S-23
PHMC.....................................................................   S-2
Pool Distribution Amount.................................................  S-22
Pool Distribution Amount Allocation......................................  S-23
Pool Scheduled Principal Balance.........................................  S-30
Pooling and Servicing Agreement..........................................  S-80
Prepayment Interest Shortfalls...........................................  S-26
Program Loans............................................................  S-64
</TABLE>
 
                                      S-89
<PAGE>
<TABLE>
<CAPTION>
TERM                                                                       PAGE
- -------------------------------------------------------------------------  -----
<S>                                                                        <C>
Realized Losses..........................................................  S-30
Record Date..............................................................  S-22
Regular Certificates.....................................................  S-82
Regular Interest Accrual Period..........................................  S-23
Relocation Mortgage Loans................................................  S-57
REMIC....................................................................   S-2
Reserve Fund.............................................................  S-51
Reserve Fund Available Advance Amount....................................  S-51
Reserve Fund Depository..................................................  S-52
Reserve Fund Required Amount.............................................  S-52
Reserve Fund Trigger Date................................................  S-51
Residual Certificate.....................................................  S-82
Rules....................................................................  S-20
Scheduled Principal Balance..............................................  S-29
Seller...................................................................   S-2
Series 1992-26 Certificates..............................................  Cover
Servicer.................................................................   S-2
SPA......................................................................  S-71
Special Hazard Loss......................................................  S-30
Special Hazard Loss Amount...............................................  S-55
Special Hazard Termination Date..........................................  S-55
Subclass.................................................................  Cover
Subordinated Certificates................................................  Cover
Subordinated Percentage..................................................  S-31
Subordinated Prepayment Percentage.......................................  S-31
Trust Estate.............................................................   S-2
Upper-Tier REMIC.........................................................   S-2
</TABLE>
 
                                      S-90
<PAGE>
THE PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY, INC.
                                     SELLER
                       MORTGAGE PASS-THROUGH CERTIFICATES
                              (ISSUABLE IN SERIES)
                             ---------------------
 
    The  Prudential  Home Mortgage  Securities  Company, Inc.  (the  "Seller" or
"PHMSC") may sell from time to time under this Prospectus and related Prospectus
Supplements Mortgage Pass-Through Certificates (the "Certificates"), issuable in
series (each, a "Series") consisting of one or more classes (each, a "Class") of
Certificates.
 
    The Certificates of a Series  will represent beneficial ownership  interests
in  a separate  trust formed  by the Seller.  Unless otherwise  specified in the
applicable Prospectus  Supplement, the  property of  each such  trust (for  each
Series,  the "Trust Estate") will be  comprised primarily of fixed or adjustable
interest rate, conventional, monthly pay, fully-amortizing first mortgage  loans
(the  "Mortgage Loans"), secured by  one- to four-family residential properties.
Unless otherwise specified in the applicable prospectus supplement, the Mortgage
Loans will have been acquired by  the Seller from its affiliate, The  Prudential
Home  Mortgage Company, Inc. ("PHMC"), and will have been underwritten to PHMC's
underwriting standards. Unless otherwise specified in the applicable  prospectus
supplement,  all of  the Mortgage Loans  will be  serviced by PHMC  (PHMC in its
capacity as servicer being referred to hereafter as the "Servicer").
 
    The Certificates of  a Series will  consist of  (i) one or  more Classes  of
Certificates  representing fractional  undivided interests in  all the principal
payments and the interest  payments, to the extent  of the related Net  Mortgage
Interest  Rate (as  defined herein),  on the  related Mortgage  Loans ("Standard
Certificates"), (ii) one or more Classes of Certificates representing fractional
undivided interests  in all  or  specified portions  of the  principal  payments
and/or  interest payments,  to the extent  of the related  Net Mortgage Interest
Rate, on the related Mortgage Loans  ("Stripped Certificates"), or (iii) two  or
more Classes of Certificates ("Multi-Class Certificates"), each of which will be
assigned  a principal balance  (a "Stated Amount"),  and each of  which may bear
interest on the Stated Amount at a fixed rate (which may be zero) specified  in,
or  a  variable  rate  determined as  specified  in,  the  applicable Prospectus
Supplement (the "Interest Rate"). Any Class of Certificates may be divided  into
two or more subclasses (each, a "Subclass").
 
    Each  Series of Certificates may include one or more Classes of Certificates
(the "Subordinated Certificates") that are subordinate in right of distributions
to such rights of one or more of  the other Classes of such Series (the  "Senior
Certificates").  If  specified  in  the  applicable  Prospectus  Supplement, the
relative interests of the Senior Certificates and the Subordinated  Certificates
of  a Series in the Trust Estate may  be subject to adjustment from time to time
on the basis of distributions received  in respect thereof. Any Class of  Senior
Certificates  or Subordinated Certificates  may, as described  above, be divided
into two or more Subclasses. If  specified in the Prospectus Supplement,  credit
support  may also be  provided for any Series  of Certificates in  the form of a
guarantee, letter of  credit, mortgage pool  insurance policy or  other form  of
credit enhancement as described herein or therein.
 
    Except  for  the  Seller's  limited obligation  in  connection  with certain
breaches of its  representations and warranties  and certain other  undertakings
and  PHMC's obligations as  Servicer, neither the Seller,  the Servicer, nor any
affiliate of the Seller or the Servicer, will have any obligations with  respect
to  the Certificates. In the event of  delinquencies in payments on the Mortgage
Loans, the Servicer will be obligated to make advances which it determines  will
be recoverable from future payments and collections on the Mortgage Loans.
 
    An election will be made to treat each Trust Estate (or a segregated pool of
assets  therein) underlying a Series of  Multi-Class Certificates or a Series of
Certificates in which the relative interests in the Trust Estate of the  Classes
of  Senior Certificates and Subordinated  Certificates are subject to adjustment
as a "real estate  mortgage investment conduit" (a  "REMIC") for federal  income
tax  purposes. Such an election may also be made with respect to any other Trust
Estate. See "Certain Federal Income Tax Consequences."
 
    There will have  been no public  market for the  Certificates of any  Series
prior to the offering thereof. No assurance can be given that such a market will
develop,   or   that  if   such  a   market  does   develop,  it   will  provide
Certificateholders with liquidity of investment or will continue for the life of
the Certificates.
                           --------------------------
 
   THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
      PASSED UPON  THE  ACCURACY  OR ADEQUACY  OF  THIS  PROSPECTUS.  ANY
       REPRESENTATION   TO   THE   CONTRARY   IS   A   CRIMINAL  OFFENSE.
                            ------------------------
 
    The Certificates may be sold from time to time by the Seller through dealers
or  agents,  through  underwriting  syndicates  led  by  one  or  more  managing
underwriters  or through  one or  more underwriters  acting alone.  See "Plan of
Distribution." Affiliates of the Seller may from  time to time act as agents  or
underwriters  in connection with  the sale of  the Certificates. The  terms of a
particular offering will be set forth  in the Prospectus Supplement relating  to
such offering.
 
    THIS  PROSPECTUS MAY NOT BE USED  TO CONSUMMATE SALES OF CERTIFICATES UNLESS
ACCOMPANIED BY  THE  PROSPECTUS SUPPLEMENT  RELATING  TO THE  OFFERING  OF  SUCH
CERTIFICATES.
                           --------------------------
 
                  The date of this Prospectus is May 19, 1992
<PAGE>
                                    REPORTS
 
    The  Servicer, or the  Paying Agent appointed by  the Servicer, will furnish
the Certificateholders of each Series, in connection with each distribution  and
annually,  statements  containing  information  with  respect  to  principal and
interest payments and the related Trust  Estate, as described herein and in  the
applicable  Prospectus Supplement for  such Series. No  information contained in
such reports will have been examined  or reported upon by an independent  public
accountant.    See    "Servicing    of    the    Mortgage    Loans--Reports   to
Certificateholders." The Servicer will also furnish periodic statements  setting
forth  certain specified information to the Trustee identified in the Prospectus
Supplement. See "Servicing of  the Mortgage Loans--Reports  to the Trustee."  In
addition,  annually  the Servicer  will furnish  the Trustee  for each  Series a
statement from a  firm of  independent public  accountants with  respect to  the
examination  of certain  documents and  records relating  to the  mortgage loans
serviced by the Servicer under the  related Pooling and Servicing Agreement  and
other   similar   servicing   agreements.  See   "Servicing   of   the  Mortgage
Loans--Evidence as to Compliance." Copies  of the monthly and annual  statements
provided  by the Servicer to the Trustee will be furnished to Certificateholders
of each Series upon  request addressed to the  Servicer c/o The Prudential  Home
Mortgage  Company,  Inc., 7470  New Technology  Way, Frederick,  Maryland 21701,
Attention: Legal Department.
 
                             ADDITIONAL INFORMATION
 
    This Prospectus contains, and the  Prospectus Supplement for each Series  of
Certificates  will contain,  a summary  of the  material terms  of the documents
referred to herein and therein, but neither contains nor will contain all of the
information set forth in the Registration Statement of which this Prospectus  is
a  part.  For  further  information,  reference  is  made  to  such Registration
Statement and  the  exhibits  thereto  which  the  Seller  has  filed  with  the
Securities  and Exchange Commission (the  "Commission"), Washington, D.C., under
the Securities  Act  of 1933,  as  amended (the  "Securities  Act").  Statements
contained in this Prospectus and any Prospectus Supplement as to the contents of
any  contract or other document referred to are summaries and, in each instance,
reference is made  to the copy  of the contract  or other document  filed as  an
exhibit  to the Registration  Statement, each such  statement being qualified in
all respects by  such reference.  Copies of  the Registration  Statement may  be
obtained  from the Public Reference Section  of the Commission, Washington, D.C.
20549 upon payment of the prescribed charges, or may be examined free of  charge
at the Commission's offices, 450 Fifth Street N.W., Washington, D.C. 20549 or at
the  regional offices of the Commission located at Room 1400, 75 Park Place, New
York, New  York 10007  and Room  3190, Kluczynski  Federal Building,  230  South
Dearborn  Street, Chicago, Illinois 60604.  Copies of any documents incorporated
herein by reference  will be provided  to each  person to whom  a Prospectus  is
delivered  upon written or oral request directed to The Prudential Home Mortgage
Securities Company, Inc.,  7470 New Technology  Way, Frederick, Maryland  21701,
telephone number 301-846-8199.
 
                                       2
<PAGE>
                               TABLE OF CONTENTS
 
                                   PROSPECTUS
 
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
Reports....................................................................................................           2
Additional Information.....................................................................................           2
Summary of Prospectus......................................................................................           7
Title of Securities........................................................................................           7
Seller.....................................................................................................           7
Servicer...................................................................................................           7
The Trust Estates..........................................................................................           7
Description of the Certificates............................................................................           7
    A. Standard Certificates...............................................................................           8
    B. Stripped Certificates...............................................................................           8
    C. Shifting Interest Certificates......................................................................           8
    D. Multi-Class Certificates............................................................................           8
Cut-Off Date...............................................................................................           8
Distribution Dates.........................................................................................           8
Record Dates...............................................................................................           9
Interest...................................................................................................           9
Principal (Including Prepayments)..........................................................................           9
Distributions in Reduction of Stated Amount................................................................           9
Credit Enhancement.........................................................................................           9
Periodic Advances..........................................................................................          10
Optional Purchase of Mortgage Loans........................................................................          11
ERISA Limitations..........................................................................................          11
Tax Status.................................................................................................          11
Rating.....................................................................................................          11
The Trust Estates..........................................................................................          12
General....................................................................................................          12
Mortgage Loans.............................................................................................          12
    INSURANCE POLICIES.....................................................................................          15
    ACQUISITION OF THE MORTGAGE
      LOANS FROM PHMC......................................................................................          16
    ASSIGNMENT OF MORTGAGE LOANS
      TO THE TRUSTEE.......................................................................................          16
    REPRESENTATIONS AND WARRANTIES.........................................................................          18
    OPTIONAL REPURCHASES...................................................................................          21
Description of The Certificates............................................................................          21
General....................................................................................................          21
Percentage Certificates....................................................................................          23
Multi-Class Certificates...................................................................................          23
Distributions to Percentage
 Certificateholders........................................................................................          24
    CERTIFICATES OTHER THAN SHIFTING
      INTEREST CERTIFICATES................................................................................          24
    CALCULATION OF DISTRIBUTABLE AMOUNTS...................................................................          24
    DETERMINATION OF AMOUNTS TO
      BE DISTRIBUTED.......................................................................................          26
    SHIFTING INTEREST CERTIFICATES.........................................................................          28
</TABLE>
 
                                       3
<PAGE>
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
Example of Distribution to
 Percentage Certificateholders.............................................................................          30
Distributions to Multi-Class Certificateholders............................................................          31
    VALUATION OF MORTGAGE LOANS............................................................................          32
    SPECIAL DISTRIBUTIONS..................................................................................          33
    LAST SCHEDULED DISTRIBUTION DATE.......................................................................          33
Credit Support.............................................................................................          34
Subordination..............................................................................................          34
    CERTIFICATES OTHER THAN SHIFTING INTEREST CERTIFICATES.................................................          34
    SHIFTING INTEREST CERTIFICATES.........................................................................          36
Other Credit Enhancement...................................................................................          38
    LIMITED GUARANTEE......................................................................................          38
    LETTER OF CREDIT.......................................................................................          38
    POOL INSURANCE POLICIES................................................................................          38
    SPECIAL HAZARD INSURANCE POLICIES......................................................................          38
    MORTGAGOR BANKRUPTCY BOND..............................................................................          38
Prepayment and Yield Considerations........................................................................          39
Pass-Through Rates and Interest Rates......................................................................          39
Scheduled Delays in Distributions..........................................................................          39
Effect of Principal Prepayments............................................................................          39
Weighted Average Life of Certificates......................................................................          40
The Seller.................................................................................................          41
PHMC.......................................................................................................          42
General....................................................................................................          42
Mortgage Loan Production Sources...........................................................................          43
Mortgage Loan Underwriting.................................................................................          44
Mortgage Origination Processing............................................................................          48
Servicing..................................................................................................          48
Use of Proceeds............................................................................................          48
Servicing of the Mortgage Loans............................................................................          48
The Servicer...............................................................................................          48
Payments on Mortgage Loans.................................................................................          48
Periodic Advances and Limitations Thereon..................................................................          51
Adjustment to Servicing Fee in Connection with Prepaid Mortgage Loans......................................          51
Reports to Certificateholders..............................................................................          52
Reports to the Trustee.....................................................................................          53
Collection and Other Servicing Procedures..................................................................          54
Enforcement of Due-on-Sale Clauses;
 Realization Upon Defaulted Mortgage Loans.................................................................          54
Fixed Retained Yield, Servicing Compensation and Payment of Expenses.......................................          55
Evidence as to Compliance..................................................................................          56
Certain Matters Regarding the Servicer.....................................................................          57
The Pooling and Servicing Agreement........................................................................          58
Events of Default..........................................................................................          58
Rights Upon Event of Default...............................................................................          58
Amendment..................................................................................................          59
Termination; Purchase of Mortgage Loans....................................................................          60
The Trustee................................................................................................          60
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
Certain Legal Aspects of the Mortgage Loans................................................................          61
General....................................................................................................          61
Foreclosure................................................................................................          61
Foreclosure on Shares of Cooperatives......................................................................          62
Rights of Redemption.......................................................................................          63
Anti-Deficiency Legislation and Other Limitations on Lenders...............................................          63
Soldiers' and Sailors' Civil Relief Act and Similar Laws...................................................          64
Environmental Considerations...............................................................................          64
"Due-on-Sale" Clause.......................................................................................          65
Applicability of Usury Laws................................................................................          66
Enforceability of Certain Provisions.......................................................................          66
Certain Federal Income Tax Consequences....................................................................          67
Federal Income Tax Consequences for REMIC Certificates.....................................................          67
  General..................................................................................................          67
  Status of REMIC Certificates.............................................................................          67
  Qualification as a REMIC.................................................................................          68
  Taxation of Regular Certificates.........................................................................          69
    GENERAL................................................................................................          69
    ORIGINAL ISSUE DISCOUNT................................................................................          70
    VARIABLE RATE REGULAR CERTIFICATES.....................................................................          72
    MARKET DISCOUNT........................................................................................          72
    PREMIUM................................................................................................          73
    SALE OR EXCHANGE OF REGULAR CERTIFICATES...............................................................          73
Taxation of Residual Certificates..........................................................................          74
    TAXATION OF REMIC INCOME...............................................................................          74
    BASIS AND LOSSES.......................................................................................          75
    TREATMENT OF CERTAIN ITEMS OF REMIC INCOME AND EXPENSE.................................................          76
      ORIGINAL ISSUE DISCOUNT..............................................................................          76
      MARKET DISCOUNT......................................................................................          76
      PREMIUM..............................................................................................          76
      LIMITATIONS OF OFFSET OR EXEMPTION OF REMIC INCOME...................................................          76
    TAX-RELATED RESTRICTIONS ON TRANSFER OF RESIDUAL CERTIFICATES..........................................          78
    DISQUALIFIED ORGANIZATIONS.............................................................................          78
    NONECONOMIC RESIDUAL INTERESTS.........................................................................          79
    FOREIGN INVESTORS......................................................................................          79
      SALE OR EXCHANGE OF A RESIDUAL CERTIFICATE...........................................................          80
    TAXES THAT MAY BE IMPOSED ON THE REMIC POOL............................................................          80
      PROHIBITED TRANSACTIONS..............................................................................          80
      CONTRIBUTIONS TO THE REMIC POOL AFTER THE STARTUP DAY................................................          80
      NET INCOME FROM FORECLOSURE PROPERTY.................................................................          81
      LIQUIDATION OF THE REMIC POOL........................................................................          81
      ADMINISTRATIVE MATTERS...............................................................................          81
Limitations on Deduction of Certain Expenses...............................................................          81
Taxation of Certain Foreign Investors......................................................................          82
    REGULAR CERTIFICATES...................................................................................          82
    RESIDUAL CERTIFICATES..................................................................................          82
Backup Withholding.........................................................................................          83
Reporting Requirements.....................................................................................          83
</TABLE>
 
                                       5
<PAGE>
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
Federal Income Tax Consequences for Certificates as to Which No REMIC Election Is Made.....................          83
Standard Certificates......................................................................................          83
    GENERAL................................................................................................          83
    TAX STATUS.............................................................................................          84
    PREMIUM AND DISCOUNT...................................................................................          85
      PREMIUM..............................................................................................          85
      ORIGINAL ISSUE DISCOUNT..............................................................................          85
      MARKET DISCOUNT......................................................................................          85
      RECHARACTERIZATION OF SERVICING FEES.................................................................          86
    SALE OR EXCHANGE OF STANDARD CERTIFICATES..............................................................          86
Stripped Certificates......................................................................................          87
    GENERAL................................................................................................          87
    STATUS OF STRIPPED CERTIFICATES........................................................................          88
    TAXATION OF STRIPPED CERTIFICATES......................................................................          88
    ORIGINAL ISSUE DISCOUNT................................................................................          88
      SALE OR EXCHANGE OF STRIPPED CERTIFICATES............................................................          89
      PURCHASE OF MORE THAN ONE CLASS OF STRIPPED CERTIFICATES.............................................          89
      POSSIBLE ALTERNATIVE CHARACTERIZATIONS...............................................................          89
Reporting Requirements and Backup Withholding..............................................................          90
Taxation of Certain Foreign Investors......................................................................          90
ERISA Considerations.......................................................................................          90
General....................................................................................................          90
Certain Requirements Under ERISA...........................................................................          91
    GENERAL................................................................................................          91
    PARTIES IN INTEREST/DISQUALIFIED PERSONS...............................................................          91
    DELEGATION OF FIDUCIARY DUTY...........................................................................          91
Administrative Exemptions..................................................................................          92
    INDIVIDUAL ADMINISTRATIVE EXEMPTIONS...................................................................          92
Exempt Plans...............................................................................................          94
Unrelated Business Taxable Income--Residual Certificates...................................................          94
Legal Investment...........................................................................................          94
Plan of Distribution.......................................................................................          95
Legal Matters..............................................................................................          97
Rating.....................................................................................................          97
Index of Significant Definitions...........................................................................          98
</TABLE>
 
                                       6
<PAGE>
                             SUMMARY OF PROSPECTUS
 
    THE  FOLLOWING IS  QUALIFIED IN  ITS ENTIRETY  BY REFERENCE  TO THE DETAILED
INFORMATION APPEARING  ELSEWHERE IN  THIS PROSPECTUS,  AND BY  REFERENCE TO  THE
INFORMATION  WITH  RESPECT  TO  EACH SERIES  OF  CERTIFICATES  CONTAINED  IN THE
APPLICABLE  PROSPECTUS  SUPPLEMENT.  CERTAIN  CAPITALIZED  TERMS  USED  AND  NOT
OTHERWISE  DEFINED  HEREIN  SHALL  HAVE THE  MEANINGS  GIVEN  ELSEWHERE  IN THIS
PROSPECTUS.
 
<TABLE>
<S>                                 <C>
Title of Securities...............  Mortgage Pass-Through Certificates (Issuable in Series).
Seller............................  The Prudential  Home Mortgage  Securities Company,  Inc.
                                    (the "Seller"), a direct, wholly-owned subsidiary of The
                                    Prudential  Home Mortgage Company,  Inc. ("PHMC"), which
                                    is a  direct,  wholly-owned  subsidiary  of  Residential
                                    Services  Corporation of America.  See "The Seller." The
                                    Seller  and   PHMC  are   each  indirect,   wholly-owned
                                    subsidiaries  of  The  Prudential  Insurance  Company of
                                    America ("Prudential Insurance").
Servicer..........................  PHMC (in such  capacity, the  "Servicer"). The  Servicer
                                    will  service the  Mortgage Loans  comprising each Trust
                                    Estate and administer  each Trust Estate  pursuant to  a
                                    Pooling  and Servicing  Agreement (each,  a "Pooling and
                                    Servicing Agreement").  See "Servicing  of the  Mortgage
                                    Loans."
The Trust Estates.................  Each  Trust Estate will consist  of the related Mortgage
                                    Loans (other than the  Fixed Retained Yield (as  defined
                                    herein),  if any) and certain other related property, as
                                    specified  in  the  applicable  Prospectus   Supplement.
                                    Unless  otherwise specified in the applicable Prospectus
                                    Supplement, the  Mortgage  Loans will  be  conventional,
                                    fixed  interest  rate,  monthly  pay,  fully-amortizing,
                                    level payment,  one-  to four-family  residential  first
                                    mortgage  loans.  If  so  specified  in  the  applicable
                                    Prospectus Supplement, a Trust Estate may include  fully
                                    amortizing,  adjustable  rate  Mortgage  Loans, Mortgage
                                    Loans secured  by condominium  units, townhouses,  units
                                    located  within  planned  unit  developments,  long-term
                                    leases with  respect to  any  of the  foregoing,  shares
                                    issued   by  cooperative  housing  corporations,  and/or
                                    Mortgage   Loans   which   are   subject   to   interest
                                    differential  subsidy agreements or buydown schedules or
                                    which provide for balloon payments of principal.
 
                                    The Mortgage Loans will have been acquired by the Seller
                                    from  its  affiliate  PHMC  or  another  affiliate.  The
                                    Mortgage Loans will have been originated by PHMC or will
                                    have  been  acquired by  PHMC  from other  mortgage loan
                                    originators, in each case for its own account or for the
                                    account of an affiliate. All of the Mortgage Loans  will
                                    have  been  underwritten to  PHMC's standards.  See "The
                                    Trust Estates."
 
                                    The particular characteristics of each Trust Estate will
                                    be set forth in the applicable Prospectus Supplement.
Description of the Certificates...  Each Series  will  consist of  one  or more  Classes  of
                                    Certificates  which  may be  (i)  Standard Certificates,
                                    (ii) Stripped Certificates,
</TABLE>
 
                                       7
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    or  (iii)  Multi-Class  Certificates.  Unless  otherwise
                                    specified  in the applicable  Prospectus Supplement, the
                                    Certificates will  be offered  only in  fully-registered
                                    form.
  A.  Standard Certificates.......  Standard  Certificates of a Series  will each evidence a
                                    fractional undivided beneficial interest in the  related
                                    Trust  Estate and will entitle the holder thereof to its
                                    proportionate share of a percentage of the principal and
                                    interest payments (to the  extent of the applicable  Net
                                    Mortgage Interest Rate) on the related Mortgage Loans.
  B.  Stripped Certificates.......  Stripped  Certificates will  each evidence  a fractional
                                    undivided  beneficial  interest  in  the  related  Trust
                                    Estate  and  will  entitle  the  holder  thereof  to its
                                    proportionate share of a specified portion (which may be
                                    zero) of principal payments  and/or a specified  portion
                                    (which  may be zero) of interest payments (to the extent
                                    of the  applicable Net  Mortgage Interest  Rate) on  the
                                    related Mortgage Loans.
  C.  Shifting Interest
  Certificates....................  Shifting  Interest Certificates of a Series are Standard
                                    or Stripped Certificates,  credit enhancement for  which
                                    is  supplied by the adjustment from  time to time of the
                                    relative interests  in the  Trust Estate  of the  Senior
                                    Certificates  and the Subordinated  Certificates of such
                                    Series.  See  "Description  of  the   Certificates--Dis-
                                    tributions  to  Percentage  Certificateholders--Shifting
                                    Interest Certificates" and "Credit
                                    Support--Subordination--Shifting Interest Certificates."
  D.  Multi-Class Certificates....  Each Series of Multi-Class Certificates will consist  of
                                    Certificates,  each  of  which  evidences  a  beneficial
                                    interest in the  related Trust Estate  and entitles  the
                                    holder  thereof to interest  payments on the outstanding
                                    Stated Amount  thereof at  a fixed  rate (which  may  be
                                    zero)  specified in,  or a  variable rate  determined as
                                    specified in, the applicable Prospectus Supplement,  and
                                    distributions   in  reduction  of   such  Stated  Amount
                                    determined in the manner and applied in the priority set
                                    forth  in  the  applicable  Prospectus  Supplement.  The
                                    aggregate  Stated  Amount  of  a  Series  of Multi-Class
                                    Certificates may be  less than  the aggregate  principal
                                    balance of the related Mortgage Loans.
Cut-Off Date......................  The   date  specified   in  the   applicable  Prospectus
                                    Supplement.
Distribution Dates................  Distributions  on  Standard  Certificates  and  Stripped
                                    Certificates  will be made on the  25th day (or, if such
                                    day is not  a business day,  the business day  following
                                    the  25th day) of each  month, commencing with the month
                                    following the month in which the applicable Cut-Off Date
                                    occurs (each, a  "Distribution Date"). Distributions  on
                                    Multi-Class   Certificates   will   be   made   monthly,
                                    quarterly, or semi-annually, on  the dates specified  in
                                    the applicable Prospectus Supplement.
</TABLE>
 
                                       8
<PAGE>
 
<TABLE>
<S>                                 <C>
Record Dates......................  Distributions  will be made on each Distribution Date to
                                    Certificateholders of record at the close of business on
                                    (unless a different date is specified in the  applicable
                                    Prospectus  Supplement)  the  last business  day  of the
                                    month preceding  the month  in which  such  Distribution
                                    Date occurs (each, a "Record Date").
Interest..........................  With  respect to a Series  of Certificates consisting of
                                    Standard Certificates or Stripped Certificates, interest
                                    on  the  related  Mortgage   Loans  at  the   applicable
                                    pass-through  rate  for  each  Class  and  Subclass (the
                                    "Pass-Through Rate"),  as set  forth in  the  applicable
                                    Prospectus Supplement, will be passed through monthly to
                                    holders thereof, in accordance with the particular terms
                                    of   each  such  Certificate.   Holders  of  Multi-Class
                                    Certificates will receive  distributions of interest  on
                                    the Stated Amount of such Certificate, without regard to
                                    the   Net  Mortgage  Interest  Rate  on  the  underlying
                                    Mortgage Loans. The Net Mortgage Interest Rate for  each
                                    Mortgage  Loan in a given period will equal the mortgage
                                    interest rate for such Mortgage Loan in such period,  as
                                    specified  in the  related mortgage  note (the "Mortgage
                                    Interest Rate"), less  the retained yield,  if any  (the
                                    "Fixed Retained Yield"), and less an amount reserved for
                                    servicing  the Mortgage  Loan and  administration of the
                                    related Trust  Estate and  related expenses  (the  "Ser-
                                    vicing Fee").
Principal (Including
  Prepayments)....................  With  respect to  a Series  of Standard  Certificates or
                                    Stripped Certificates, unless otherwise specified in the
                                    applicable  Prospectus  Supplement,  principal  payments
                                    (including  prepayments in full received on each related
                                    Mortgage Loan during  the month preceding  the month  in
                                    which a Distribution Date occurs and partial prepayments
                                    received by the Servicer prior to the Determination Date
                                    preceding such Distribution Date) will be passed through
                                    to holders on such Distribution Date.
Distributions in Reduction of
  Stated Amount...................  With  respect to  a Series  of Multi-Class Certificates,
                                    distributions in reduction of Stated Amount will be made
                                    on each Distribution Date to  the holders of each  Class
                                    then  entitled to  receive such  distributions until the
                                    aggregate amount of such distributions have reduced  the
                                    Stated  Amount  of each  such  Class of  Certificates to
                                    zero. Distributions in reduction  of Stated Amount  will
                                    be  allocated among the Classes  of such Certificates in
                                    the  manner  specified  in  the  applicable   Prospectus
                                    Supplement. See "Description of the
                                    Certificates--Distributions to Multi-Class Cer-
                                    tificateholders."
Credit Enhancement................  A Series of Certificates may include one or more Classes
                                    of  Senior  Certificates  and  one  or  more  Classes of
                                    Subordinated Certificates. The rights of the holders  of
                                    Subordinated   Certificates  of  a   Series  to  receive
                                    distributions with respect to the related Mortgage Loans
                                    will be subordinated  to such rights  of the holders  of
                                    the Senior Certificates of the same Series to the extent
                                    (the  "Subordinated Amount") specified in the applicable
                                    Prospectus
</TABLE>
 
                                       9
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    Supplement. This  subordination is  intended to  enhance
                                    the  likelihood  of  the timely  receipt  by  the Senior
                                    Certificateholders  of  their  proportionate  share   of
                                    scheduled monthly principal and interest payments on the
                                    related  Mortgage  Loans  and  to  protect  them against
                                    losses.  This  protection  will   be  effected  by   the
                                    preferential  right of the  Senior Certificateholders to
                                    receive current  distributions on  the related  Mortgage
                                    Loans  and (if so specified in the applicable Prospectus
                                    Supplement) by the establishment of a reserve fund  (the
                                    "Subordination  Reserve  Fund")  with  respect  to  each
                                    Series  of  Certificates  that   includes  a  Class   of
                                    Subordinated  Certificates.  Any  Subordination  Reserve
                                    Fund may be  funded initially with  the Initial  Deposit
                                    (as  defined  herein)  in  an  amount  specified  in the
                                    applicable Prospectus Supplement, and may be funded from
                                    time  to  time  from  payments  on  the  Mortgage  Loans
                                    otherwise distributable to the Subordinated
                                    Certificateholders  in  the  manner  and  to  the extent
                                    specified in the  applicable Prospectus Supplement.  The
                                    maintenance   of  any  Subordination   Reserve  Fund  is
                                    intended  to   provide   liquidity,   but   in   certain
                                    circumstances  the Subordination  Reserve Fund  could be
                                    depleted   and,   if   other   amounts   available   for
                                    distribution are insufficient, shortfalls in
                                    distributions  to  the  Senior  Certificateholders could
                                    result. Until  the  Subordinated Amount  is  reduced  to
                                    zero,  Senior  Certificateholders  will  be  entitled to
                                    receive the amount of any such shortfall, together  with
                                    interest  at  the applicable  Pass-Through Rate,  on the
                                    next  Distribution   Date  (as   defined  herein).   The
                                    Subordinated   Amount  is  intended  to  protect  Senior
                                    Certificateholders against  losses, however,  if  losses
                                    realized  on the  Mortgage Loans  in a  Trust Estate are
                                    exceptionally high Senior  Certificateholders will  bear
                                    their  proportionate share of any losses realized on the
                                    related Mortgage  Loans  in  excess  of  the  applicable
                                    Subordinated Amount.
                                    If so specified in the applicable Prospectus Supplement,
                                    the   protection   afforded   to   holders   of   Senior
                                    Certificates of a Series by the subordination of certain
                                    rights of holders of  Subordinated Certificates of  such
                                    Series  to distributions  on the  related Mortgage Loans
                                    may be effected  by a method  other than that  described
                                    above,  such as, in the  event that the applicable Trust
                                    Estate (or a segregated  pool of assets therein)  elects
                                    to  be treated as a REMIC, the reallocation from time to
                                    time, on the basis of distributions previously received,
                                    of the  respective percentage  interests of  the  Senior
                                    Certificates  and the  Subordinated Certificates  in the
                                    related  Trust   Estate.   See   "Description   of   the
                                    Certificates--Distributions to Percentage
                                    Certificateholders-- Shifting Interest Certificates."
                                    The  Certificates  of any  Series,  or any  one  or more
                                    Classes thereof, may  be entitled to  the benefits of  a
                                    guarantee,  letter  of credit,  mortgage  pool insurance
                                    policy or other form of credit enhancement as  specified
                                    in    the   applicable    Prospectus   Supplement.   See
                                    "Description of the Certificates" and "Credit Support."
</TABLE>
 
                                       10
<PAGE>
 
<TABLE>
<S>                                 <C>
Periodic Advances.................  In  the  event  of  delinquencies  in  payments  on  the
                                    Mortgage  Loans, the Servicer will make advances of cash
                                    ("Periodic Advances")  to  the Certificate  Account  (as
                                    defined   herein)  to  the   extent  that  the  Servicer
                                    determines such Periodic  Advances would be  recoverable
                                    from  future  payments and  collections on  the Mortgage
                                    Loans. Any such Periodic  Advances will be  reimbursable
                                    to  the Servicer as described herein and in the applica-
                                    ble  Prospectus  Supplement.   See  "Servicing  of   the
                                    Mortgage   Loans--Periodic   Advances   and  Limitations
                                    Thereon."
Optional Purchase of Mortgage
  Loans...........................  The Seller may, at its option, repurchase any  defaulted
                                    Mortgage   Loan.   See   "The   Trust  Estates--Mortgage
                                    Loans--Optional Repurchases."  If  so specified  in  the
                                    Prospectus Supplement with respect to a Series, all, but
                                    not  less than all, of the Mortgage Loans in the related
                                    Trust  Estate  and  any  property  acquired  in  respect
                                    thereof  at the time, may be  purchased by the person or
                                    persons specified in such  Prospectus Supplement in  the
                                    manner  and at  the price  specified in  such Prospectus
                                    Supplement. In the  event that  an election  is made  to
                                    treat  the related Trust Estate (or a segregated pool of
                                    assets therein) as  a REMIC, any  such purchase will  be
                                    effected  only pursuant to a "qualified liquidation," as
                                    defined under Section 860F(a)(4)(A) of the Internal Rev-
                                    enue Code of 1986, as amended (the "Code"). Exercise  of
                                    the  right of purchase will  effect the early retirement
                                    of the Certificates of that Series. See "Prepayment  and
                                    Yield Considerations."
ERISA Limitations.................  A  fiduciary of any employee benefit plan subject to the
                                    fiduciary  responsibility  provisions  of  the  Employee
                                    Retirement  Income  Security  Act  of  1974,  as amended
                                    ("ERISA"), including the "prohibited transaction"  rules
                                    thereunder,  and to the  corresponding provisions of the
                                    Code,  should  carefully  review  with  its  own   legal
                                    advisors whether the purchase or holding of Certificates
                                    could give rise to a transaction prohibited or otherwise
                                    impermissible  under  ERISA  or  the  Code.  See  "ERISA
                                    Considerations."
Tax Status........................  The treatment of the Certificates for federal income tax
                                    purposes will  be  determined  (i) by  whether  a  REMIC
                                    election   is  made   with  respect   to  a   Series  of
                                    Certificates and,  if  a  REMIC  election  is  made,  by
                                    whether   the  Certificates  are  Regular  Interests  or
                                    Residual Interests  and  (ii)  by whether,  if  a  REMIC
                                    election  is not  made, the Certificates  of such Series
                                    are Standard Certificates or Stripped Certificates.  See
                                    "Certain Federal Income Tax Consequences."
Rating............................  It  is  a  condition  to the  issuance  of  the Stripped
                                    Certificates and  the  Multi-Class Certificates  of  any
                                    Series  that they  be rated  in one  of the  two highest
                                    rating categories by at least one nationally  recognized
                                    statistical  rating  organization  (a  "Rating Agency").
                                    Standard Certificates  may  or may  not  be rated  by  a
                                    Rating Agency.
</TABLE>
 
                                       11
<PAGE>
                               THE TRUST ESTATES
 
GENERAL
 
    The  Trust Estate for  each Series of Certificates  will consist of Mortgage
Loans evidenced by promissory notes (the "Mortgage Notes") secured by mortgages,
deeds of trust or  other instruments creating first  liens (the "Mortgages")  on
some  or all of the  following types of property  (as so secured, the "Mortgaged
Properties"), to the extent set  forth in the applicable Prospectus  Supplement:
(i)  one- to four-family detached residences, (ii) townhouses, (iii) condominium
units, (iv) units within  planned unit developments,  (v) long-term leases  with
respect  to any of the  foregoing, and (vi) shares  issued by private non-profit
housing corporations  ("cooperatives") and  the  related proprietary  leases  or
occupancy agreements granting exclusive rights to occupy specified units in such
cooperatives'  buildings.  In addition,  a Trust  Estate  will also  include (i)
amounts held from  time to  time in the  related Certificate  Account, (ii)  the
Seller's  interest in  any primary  mortgage insurance,  hazard insurance, title
insurance or other  insurance policies relating  to a Mortgage  Loan, (iii)  any
property  which initially secured a Mortgage Loan and which has been acquired by
foreclosure or trustee's sale or deed in lieu of foreclosure or trustee's  sale,
(iv)  if applicable, and  to the extent  set forth in  the applicable Prospectus
Supplement, any Subordination Reserve Fund and/or any other reserve fund, (v) if
applicable, and to the extent set forth in the applicable Prospectus Supplement,
contractual obligations of any person to make payments in respect of any form of
credit enhancement or any interest subsidy agreement, and (vi) such other assets
as may be specified  in the applicable  Prospectus Supplement. Unless  otherwise
specified  in the  applicable Prospectus Supplement,  the Trust  Estate will not
include,  however,  the  portion  of  interest  on  the  Mortgage  Loans   which
constitutes  the Fixed  Retained Yield, if  any. See "Servicing  of the Mortgage
Loans--Fixed Retained Yield; Servicing Compensation and Payment of Expenses."
 
MORTGAGE LOANS
 
    The Mortgage Loans will have been acquired by the Seller from its  affiliate
PHMC  or another affiliate. The Mortgage Loans will have been originated by PHMC
for its  own account  or for  the  account of  an affiliate  or will  have  been
acquired  by PHMC for  its own account or  for the account  of an affiliate from
other mortgage loan originators. Each Mortgage Loan will have been  underwritten
to   PHMC's  standards.  See  "PHMC--  Mortgage  Loan  Production  Sources"  and
"--Mortgage Loan Underwriting." The Prospectus  Supplement for each Series  will
set  forth the  respective number  and principal  amounts of  Mortgage Loans (i)
originated by PHMC for its own account or for the account of its affiliates  and
(ii)  purchased by PHMC for its own account or for the account of its affiliates
from other  mortgage  loan originators  through  PHMC's mortgage  loan  purchase
programs.
 
    Each  of the  Mortgage Loans will  be secured  by a Mortgage  on a Mortgaged
Property located in any of the 50 states or the District of Columbia. Generally,
the land underlying a Mortgaged Property will consist of five acres or less  but
may  consist of greater acreage in PHMC's  discretion. The Mortgage Loans may be
secured by leases on real property  under circumstances that PHMC determines  in
its  discretion  are commonly  acceptable  to institutional  mortgage investors.
Generally, a  Mortgage Loan  will be  secured  by a  lease only  if the  use  of
leasehold  estates as security for mortgage loans  is customary in the area, the
lease is not subject to any prior  lien that could result in termination of  the
lease  and the term  of the lease ends  at least five  years beyond the maturity
date of the related Mortgage Loan. The Prospectus Supplement will set forth  the
geographic  distribution of  Mortgaged Properties  and the  number and aggregate
unpaid principal  balances  of  the  Mortgage Loans  by  category  of  Mortgaged
Property.
 
    The  Prospectus Supplement for each Series will  also set forth the range of
original terms  to maturity  of the  Mortgage  Loans in  the Trust  Estate,  the
weighted  average remaining term to stated maturity  at the Cut-Off Date of such
Mortgage Loans, the earliest and latest  months of origination of such  Mortgage
Loans,  the range  of Mortgage  Interest Rates  and Net  Mortgage Interest Rates
borne by such Mortgage Loans, if  such Mortgage Loans have varying Net  Mortgage
Interest Rates, the weighted average Net Mortgage Interest
 
                                       12
<PAGE>
Rate  at the  Cut-Off Date  of such Mortgage  Loans, the  range of Loan-to-Value
Ratios at  the  time of  origination  of such  Mortgage  Loans and  the  highest
outstanding principal balance at origination of any such Mortgage Loan.
 
    Unless  otherwise specified in the  applicable Prospectus Supplement, all of
the Mortgage Loans in a Trust Estate will have monthly payments due on the first
of each month (each, a "Due Date") and will be fully-amortizing Mortgage  Loans,
each  with a fixed rate of interest and  level monthly payments over the term of
the Mortgage Loan. If  so specified in the  applicable Prospectus Supplement,  a
Trust  Estate may include fully amortizing,  adjustable rate Mortgage Loans with
Mortgage Interest Rates adjusted  periodically, in the  manner specified in  the
related  Prospectus  Supplement. Unless  otherwise  specified in  the applicable
Prospectus Supplement, no adjustable interest rate Mortgage Loan will be subject
to a  possibility  of negative  amortization.  If specified  in  the  applicable
Prospectus Supplement, fixed rates on certain Mortgage Loans may be converted to
adjustable rates and adjustable rates on certain Mortgage Loans may be converted
to  fixed rates, in each case after  origination of such Mortgage Loans and upon
the satisfaction  of other  conditions specified  in the  applicable  Prospectus
Supplement.  Unless otherwise specified in the applicable Prospectus Supplement,
in either  such event,  the Pooling  and Servicing  Agreement will  require  the
Servicer  to repurchase each such converted Mortgage Loan at the price set forth
in  the  applicable  Prospectus  Supplement.  If  specified  in  the  applicable
Prospectus  Supplement, a  Trust Estate  may contain  convertible Mortgage Loans
which have converted prior to  the formation of the  Trust Estate and which  are
subject to no further conversions.
 
    Unless  otherwise  specified  in the  applicable  Prospectus  Supplement, no
Mortgage Loan will have  had at origination a  Loan-to-Value Ratio in excess  of
90%.  The Loan-to-Value Ratio  is the ratio,  expressed as a  percentage, of the
principal amount of the Mortgage  Loan at origination to  the lesser of (i)  the
appraised  value  of  the  related  Mortgaged  Property,  as  established  by an
appraisal obtained by the originator generally no more than four months prior to
origination, or  (ii) the  sale price  for  such property.  For the  purpose  of
calculating  the Loan-to-Value Ratio of any Mortgage  Loan that is the result of
the refinancing (including a refinancing for  "equity take out" purposes) of  an
existing mortgage loan, the appraised value of the related Mortgaged Property is
generally  determined by reference  to an appraisal  obtained in connection with
the origination  of the  replacement  loan. Unless  otherwise specified  in  the
related  Prospectus Supplement,  with respect  to a  Mortgage Loan  secured by a
second home,  an  owner-occupied  cooperative,  a high  rise  condominium  or  a
non-owner  occupied property, the  Loan-to-Value Ratio will  not exceed 80%, and
with respect to a Mortgage Loan which is made to refinance, for equity take  out
purposes,  an  existing  mortgage loan  on  a non-owner  occupied  property, the
Loan-to-Value Ratio  will generally  not  exceed 75%.  Mortgage Loans  having  a
Loan-to-Value  Ratio in excess  of 80% will  not be covered  by primary mortgage
insurance,  except  to  the  extent  specified  in  the  applicable   Prospectus
Supplement. See "PHMC--Mortgage Loan Underwriting."
 
    No  assurance  can be  given that  values of  the Mortgaged  Properties have
remained or will remain at  the levels which existed  on the dates of  appraisal
(or,  where applicable, recertification of value) of the related Mortgage Loans.
If residential real estate  values generally or  in particular geographic  areas
decline  such  that  the outstanding  balances  of  the Mortgage  Loans  and any
secondary financing on  the Mortgaged  Properties in a  particular Trust  Estate
become  equal to or greater than the values of the related Mortgaged Properties,
the actual rates of delinquencies, foreclosures and losses could be higher  than
those  now generally experienced in the  mortgage lending industry and those now
experienced  in  PHMC's  servicing  portfolio.  In  addition,  adverse  economic
conditions generally, in particular geographic areas or industries, or affecting
particular  segments of the  borrowing community (such  as mortgagors relying on
commission income and self-employed mortgagors)  and other factors which may  or
may  not  affect real  property  values, including  the  purposes for  which the
Mortgage Loans were made  and the uses of  the Mortgaged Properties, may  affect
the timely payment by mortgagors of scheduled payments of principal and interest
on  the  Mortgage Loans  and, accordingly,  the  actual rates  of delinquencies,
foreclosures and losses with  respect to any  Trust Estate. See  "PHMC--Mortgage
Loan Underwriting" and "Description of the Certificates--
 
                                       13
<PAGE>
Weighted  Average Life of  Certificates" herein. To the  extent that such losses
are not  covered by  the methods  of credit  support or  the insurance  policies
described  herein, they  will be  borne by  holders of  the Certificates  of the
Series evidencing interests in such Trust Estate.
 
    Unless otherwise  provided  in  the applicable  Prospectus  Supplement,  all
Mortgage  Loans will  be covered by  an appropriate standard  form American Land
Title Association ("ALTA")  title insurance policy,  or a substantially  similar
policy  or  form  of  insurance  acceptable  to  the  Federal  National Mortgage
Association ("FNMA") or the Federal Home Loan Mortgage Corporation ("FHLMC").
 
    If so specified in the applicable Prospectus Supplement, a Trust Estate  may
contain   Mortgage  Loans  subject  to  temporary  interest  subsidy  agreements
("Subsidy Loans") pursuant  to which the  monthly payments made  by the  related
mortgagors  will be  less than the  scheduled monthly payments  on such Mortgage
Loans with the present  value of the resulting  difference in payment  ("Subsidy
Payments")  being provided  by the  employer of  the mortgagor,  generally on an
annual  basis.  Unless   otherwise  specified  in   the  applicable   Prospectus
Supplement,  Subsidy Payments  will be placed  in a  custodial account ("Subsidy
Account") by  the  Servicer. Despite  the  existence  of a  subsidy  program,  a
mortgagor  remains  primarily  liable for  making  all scheduled  payments  on a
Subsidy Loan and for all other obligations provided for in the related  Mortgage
Note and Mortgage Loan.
 
    Subsidy  Loans are offered by employers generally through either a graduated
or fixed  subsidy loan  program, or  a  combination thereof.  The terms  of  the
subsidy  agreements relating  to Subsidy Loans  generally range from  one to ten
years. The subsidy agreements relating to  Subsidy Loans made under a  graduated
program  generally will  provide for subsidy  payments that  result in effective
subsidized interest rates  between three percentage  points and five  percentage
points  below  the Mortgage  Interest Rates  specified  in the  related Mortgage
Notes. Generally, under a graduated program, the subsidized rate for a  Mortgage
Loan  will increase approximately one percentage  point per year until it equals
the full Mortgage Interest Rate. For example, if the initial subsidized interest
rate is five percentage points below the Mortgage Interest Rate in year one, the
subsidized rate  will increase  to  four percentage  points below  the  Mortgage
Interest Rate in year two, and likewise until year six, when the subsidized rate
will  equal the Mortgage Interest Rate. Where the subsidy agreements relating to
Subsidy Loans are in effect for longer than five years, the subsidized  interest
rates  generally increase  at smaller percentage  increments for  each year. The
subsidy agreements  relating  to  Subsidy  Loans  made  under  a  fixed  program
generally  will  provide  for  subsidized interest  rates  at  fixed percentages
(generally one percentage  point to  two percentage points)  below the  Mortgage
Interest  Rates for  specified periods,  generally not  in excess  of ten years.
Subsidy Loans are also offered pursuant to combination fixed/graduated programs.
The subsidy agreements relating to such Subsidy Loans generally will provide for
an initial  fixed subsidy  of up  to five  percentage points  below the  related
Mortgage  Interest Rate for up  to five years, and  then a periodic reduction in
the subsidy for up to  five years, at an equal  fixed percentage per year  until
the subsidized rate equals the Mortgage Interest Rate.
 
    Generally,  employers may terminate subsidy programs in the event of (i) the
mortgagor's death, retirement,  resignation or termination  of employment,  (ii)
the  full prepayment  of the Subsidy  Loan by  the mortgagor, (iii)  the sale or
transfer by the mortgagor of the related Mortgaged Property as a result of which
the mortgagee  is  entitled to  accelerate  the  Subsidy Loan  pursuant  to  the
"due-on-sale"  clause contained  in the  Mortgage, or  (iv) the  commencement of
foreclosure proceedings or the acceptance of  a deed in lieu of foreclosure.  In
addition,  some  subsidy programs  provide that  if  prevailing market  rates of
interest on mortgage loans similar to a Subsidy Loan are less than the  Mortgage
Interest  Rate of such Subsidy Loan, the employer may request that the mortgagor
refinance such Subsidy Loan and may  terminate the related subsidy agreement  if
the  mortgagor fails to refinance such Subsidy  Loan. In the event the mortgagor
refinances such Subsidy Loan,  the new loan  will not be  included in the  Trust
Estate. See "Prepayment and Yield Considerations" herein. In the event a subsidy
agreement  is terminated,  the amount remaining  in the Subsidy  Account will be
returned to the employer, and the mortgagor  will be obligated to make the  full
 
                                       14
<PAGE>
amount  of all  remaining scheduled  payments, if  any. The  mortgagor's reduced
monthly housing expense as a consequence  of payments under a subsidy  agreement
is  used by  PHMC in  determining certain  expense-to-income ratios  utilized in
underwriting a Subsidy Loan. See "PHMC--Mortgage Loan Underwriting."
 
    If so specified in the applicable Prospectus Supplement, a Trust Estate  may
contain  Mortgage Loans subject  to temporary buy-down  plans ("Buy-Down Loans")
pursuant to which the  monthly payments made by  the mortgagor during the  early
years  of the Mortgage Loan will be  less than the scheduled monthly payments on
the Mortgage Loan. The resulting difference  in payment will be compensated  for
from  an amount contributed by  the seller of the  related Mortgaged Property or
another source, including the  originator of the Mortgage  Loan (generally on  a
present  value basis) and, if so specified in the related Prospectus Supplement,
placed in a  custodial account  (the "Buy-Down Fund")  by the  Servicer. If  the
mortgagor  on a  Buy-Down Loan  prepays such Mortgage  Loan in  its entirety, or
defaults on such Mortgage Loan and the Mortgaged Property is sold in liquidation
thereof, during the period  when the mortgagor is  not obligated, on account  of
the  buy-down plan, to pay the full  monthly payment otherwise due on such loan,
the unpaid  principal balance  of such  Buy-Down  Loan will  be reduced  by  the
amounts  remaining in the Buy-Down Fund with  respect to such Buy-Down Loan, and
such amounts will be deposited in  the Certificate Account (as defined  herein),
net  of any  amounts paid  with respect  to such  Buy-Down Loan  by any insurer,
guarantor or other person pursuant to a credit enhancement arrangement described
in the applicable Prospectus Supplement.
 
    If so specified in the applicable Prospectus Supplement, a Trust Estate  may
include  Mortgage Loans which are amortized over 30 years but which have shorter
terms to maturity (each  such Mortgage Loan, a  "Balloon Loan") that causes  the
outstanding principal balance of the related Mortgage Loan to be due and payable
at  the  end  of  a  certain specified  period  (the  "Balloon  Period"). Unless
otherwise specified in  the applicable  Prospectus Supplement,  the borrower  of
such  Balloon Loan  will be  obligated to  pay the  entire outstanding principal
balance of the Balloon  Loan at the  end of the related  Balloon Period. In  the
event  PHMC refinances a mortgagor's Balloon Loan at maturity, the new loan will
not be included in the Trust  Estate. See "Prepayment and Yield  Considerations"
herein.  A Trust Estate  may also include  other types of  Mortgage Loans to the
extent set forth in the applicable Prospectus Supplement.
 
  INSURANCE POLICIES
 
    The Pooling and Servicing Agreement will require the Servicer to cause to be
maintained for each Mortgage Loan a standard hazard insurance policy issued by a
generally acceptable insurer insuring the improvements on the Mortgaged Property
underlying such Mortgage Loan  against loss by fire,  with extended coverage  (a
"Standard  Hazard Insurance Policy").  The Pooling and  Servicing Agreement will
require that such  Standard Hazard  Insurance Policy be  in an  amount at  least
equal  to the lesser of  100% of the insurable value  of the improvements on the
Mortgaged Property or  the principal  balance of such  Mortgage Loan;  provided,
however, that such insurance may not be less than the minimum amount required to
fully  compensate  for any  damage  or loss  on  a replacement  cost  basis. The
Servicer will also maintain  on property acquired upon  foreclosure, or deed  in
lieu of foreclosure, of any Mortgage Loan, a Standard Hazard Insurance Policy in
an amount that is at least equal to the lesser of 100% of the insurable value of
the  improvements which are a part of  such property or the principal balance of
such Mortgage Loan  plus accrued  interest and  liquidation expenses;  provided,
however, that such insurance may not be less than the minimum amount required to
fully compensate for any damage or loss on a replacement cost basis. Any amounts
collected  under any  such policies  (other than  amounts to  be applied  to the
restoration or repair of the Mortgaged  Property or released to the borrower  in
accordance   with  normal  servicing  procedures)   will  be  deposited  in  the
Certificate Account.
 
    The Standard Hazard Insurance Policies covering the Mortgage Loans generally
will cover  physical damage  to,  or destruction  of,  the improvements  on  the
Mortgaged Property caused by fire, lightning, explosion, smoke, windstorm, hail,
riot,  strike  and civil  commotion, subject  to  the conditions  and exclusions
particularized in each  policy. Because the  Standard Hazard Insurance  Policies
relating to such Mortgage
 
                                       15
<PAGE>
Loans  will  be  underwritten by  different  insurers and  will  cover Mortgaged
Properties located in various states,  such policies will not contain  identical
terms  and conditions.  The most  significant terms  thereof, however, generally
will be  determined  by state  law  and generally  will  be similar.  Most  such
policies  typically  will  not  cover any  physical  damage  resulting  from the
following: war, revolution, governmental actions, floods and other water-related
causes, earth movement (including earthquakes, landslides and mudflows), nuclear
reaction, wet  or  dry  rot,  vermin,  rodents,  insects  or  domestic  animals,
hazardous   wastes  or  hazardous  substances,  theft  and,  in  certain  cases,
vandalism. The foregoing list is merely indicative of certain kinds of uninsured
risks and is not all-inclusive.
 
    The Servicer may maintain a blanket policy insuring against hazard losses on
all of the  Mortgaged Properties in  lieu of maintaining  the required  Standard
Hazard  Insurance Policies. The  Servicer will be  liable for the  amount of any
deductible under a blanket policy  if such amount would  have been covered by  a
required Standard Hazard Insurance Policy, had it been maintained.
 
    In  general, if the improvements  on a Mortgaged Property  are located in an
area identified  in the  Federal Register  by the  Federal Emergency  Management
Agency  as having special flood hazards (and  such flood insurance has been made
available) the  Pooling and  Servicing Agreement  will require  the Servicer  to
cause  to be maintained a flood insurance policy meeting the requirements of the
current guidelines  of the  Federal Insurance  Administration with  a  generally
acceptable  insurance carrier.  Generally, the  Pooling and  Servicing Agreement
will require that such flood insurance be  in an amount not less than the  least
of  (i) the outstanding  principal balance of  the Mortgage Loan,  (ii) the full
insurable value of the  improvements, or (iii) the  maximum amount of  insurance
which  is available under the Flood Disaster Protection Act of 1973, as amended.
PHMC does not provide financing for flood zone properties located in communities
not participating  in  the National  Flood  Insurance Program  or  if  available
insurance coverage is, in its judgment, unrealistically low.
 
    Any  losses incurred with  respect to Mortgage Loans  due to uninsured risks
(including earthquakes,  mudflows,  floods  and hazardous  wastes  or  hazardous
substances) or insufficient hazard insurance proceeds could affect distributions
to the Certificateholders.
 
  ACQUISITION OF THE MORTGAGE LOANS FROM PHMC
 
    The  Seller will  have acquired  the Mortgage  Loans included  in each Trust
Estate from PHMC. In connection with the conveyance of the Mortgage Loans to the
Seller, PHMC will (i) agree to deliver to the Seller all of the documents  which
the   Seller  is  required  to  deliver   to  the  Trustee;  (ii)  make  certain
representations and warranties to the Seller which will be the basis of  certain
of  the Seller's representations and warranties  to the Trustee; and (iii) agree
to repurchase or substitute for any Mortgage Loan for which any document is  not
delivered  or is  found to  be defective  in any  material respect,  or which is
discovered at any  time not to  be in conformance  with the representations  and
warranties  PHMC has made to the Seller, if PHMC cannot deliver such document or
cure such defect or breach within  60 days after notice thereof. Such  agreement
will  inure to  the benefit of  the Trustee and  is intended to  help ensure the
Seller's performance of its limited  obligation to repurchase or substitute  for
Mortgage  Loans. See "The Trust  Estates--Mortgage Loans--Assignment of Mortgage
Loans to the Trustee," and "--Representations and Warranties."
 
  ASSIGNMENT OF MORTGAGE LOANS TO THE TRUSTEE
 
    At the time of issuance of  each Series of Certificates, the Mortgage  Loans
in  the  related  Trust Estate  will,  pursuant  to the  applicable  Pooling and
Servicing Agreement, be assigned to the Trustee, together with all principal and
interest received on or with respect to such Mortgage Loans after the applicable
Cut-Off Date other than principal and interest due and payable on or before such
Cut-Off Date  and interest  attributable to  the Fixed  Retained Yield  on  such
Mortgage  Loans, if  any. See "Servicing  of the  Mortgage Loans--Fixed Retained
Yield, Servicing Compensation and Payment of Expenses." The Trustee or its agent
will,  concurrently  with   such  assignment,  authenticate   and  deliver   the
Certificates  evidencing such Series to the  Seller in exchange for the Mortgage
Loans. Each  Mortgage Loan  will be  identified in  a schedule  appearing as  an
 
                                       16
<PAGE>
exhibit  to the applicable  Pooling and Servicing  Agreement. Each such schedule
will include, among other things, the  unpaid principal balance as of the  close
of  business on the applicable Cut-Off Date,  the maturity date and the Mortgage
Interest Rate for each Mortgage Loan in the related Trust Estate.
 
    In addition,  with respect  to each  Mortgage Loan  in a  Trust Estate,  the
mortgage or other promissory note, any assumption, modification or conversion to
fixed  interest rate agreement, a mortgage assignment in recordable form and the
recorded Mortgage (or other  documents as are required  under applicable law  to
create  a perfected security interest in the  Mortgaged Property in favor of the
Trustee) will  be delivered  to  the Trustee  (or  to a  designated  custodian);
provided  that, in instances where recorded documents cannot be delivered due to
delays in connection with recording, copies thereof, certified by the Seller  to
be  true  and complete  copies  of such  documents  sent for  recording,  may be
delivered and the original  recorded documents will  be delivered promptly  upon
receipt. As to each Mortgage Loan for which there is primary mortgage insurance,
the  certificate of primary mortgage insurance will be delivered to the Trustee.
The assignment of  each Mortgage  will be  recorded promptly  after the  initial
issuance  of Certificates for the related  Trust Estate, except in states where,
in the  opinion of  counsel acceptable  to the  Trustee, such  recording is  not
required  to protect  the Trustee's  interest in  the Mortgage  Loan against the
claim of  any subsequent  transferee or  any  successor to  or creditor  of  the
Seller, PHMC or the originator of such Mortgage Loan.
 
    The   Trustee  will  hold  such  documents  in  trust  for  the  benefit  of
Certificateholders of the related Series  and will review such documents  within
45  days of the date  of the applicable Pooling  and Servicing Agreement. If any
document is not delivered or is found  to be defective in any material  respect,
or  if the  Seller is  in breach  of any  of its  representations and warranties
contained in such Pooling  and Servicing Agreement,  and such breach  materially
and  adversely affects  the interests  of the  Certificateholders in  a Mortgage
Loan, and the Seller cannot deliver such document or cure such defect or  breach
within  60 days after written notice thereof, the Seller will, within 60 days of
such notice, either repurchase the related  Mortgage Loan from the Trustee at  a
price  equal  to the  then unpaid  principal balance  thereof, plus  accrued and
unpaid interest  at  the applicable  Mortgage  Interest Rate  (minus  any  Fixed
Retained Yield) through the last day of the month in which such repurchase takes
place,  or (in the  case of a  Series for which  a REMIC election  will be made,
unless the  maximum  period  as  may  be provided  by  the  Code  or  applicable
regulations  of the  Department of  the Treasury  ("Treasury Regulations") shall
have elapsed  since  the  execution  of the  applicable  Pooling  and  Servicing
Agreement)  substitute  for  such  Mortgage  Loan  a  new  mortgage  loan having
characteristics such that the representations and warranties of the Seller  made
pursuant   to  the  applicable  Pooling  and  Servicing  Agreement  (except  for
representations and warranties as to the correctness of the applicable  schedule
of  mortgage loans) would  not have been incorrect  had such substitute Mortgage
Loan originally been  a Mortgage  Loan. In the  case of  a repurchased  Mortgage
Loan,  the  purchase  price will  be  deposited  by the  Seller  in  the related
Certificate Account. In  the case of  a substitute Mortgage  Loan, the  mortgage
file  relating thereto will be  delivered to the Trustee  (or the custodian) and
the Seller will deposit in the Certificate Account an amount equal to the excess
of (i) the unpaid  principal balance of the  Mortgage Loan which is  substituted
for,  over (ii)  the unpaid principal  balance of the  substitute Mortgage Loan,
together with interest on such excess at  the Net Mortgage Interest Rate to  the
next  scheduled Due  Date of  the Mortgage Loan  which is  being substituted for
(adjusted, in the case of a Series for  which a REMIC election will be made,  as
set  forth in the applicable Pooling and Servicing Agreement, to ensure that the
Trustee will not recognize gain). In no event will any substitute Mortgage  Loan
have  an unpaid principal  balance greater than  the Scheduled Principal Balance
(as defined herein)  of the  Mortgage Loan for  which it  is substituted  (after
giving   effect  to  the  scheduled  principal  payment  due  in  the  month  of
substitution on the Mortgage  Loan substituted for), or  a term greater than,  a
Mortgage Interest Rate less than, a Mortgage Interest Rate more than one percent
per  annum greater than or  a Loan-to-Value greater than,  the Mortgage Loan for
which it is substituted. If  substitution is to be  made for an adjustable  rate
Mortgage  Loan,  the  substitute Mortgage  Loan  will have  an  unpaid principal
balance no greater than the Scheduled Principal Balance of the Mortgage Loan for
which it is substituted (after giving effect to the scheduled principal  payment
due  in  the month  of substitution  on  the Mortgage  Loan substituted  for), a
Loan-to-Value Ratio  less than  or equal  to, and  a Mortgage  Interest Rate  at
 
                                       17
<PAGE>
least  equal to, that of the Mortgage Loan for which it is substituted, and will
bear interest based on the same index, margin and frequency of adjustment as the
substituted  Mortgage  Loan.  Unless  otherwise  specified  in  the   applicable
Prospectus  Supplement, the repurchase obligation  and the mortgage substitution
referred  to  above  will  constitute   the  sole  remedies  available  to   the
Certificateholders or the Trustee with respect to missing or defective documents
or  breach of the  Seller's representations and  warranties. Notwithstanding the
above, if an election is made to treat the Trust Estate (or a segregated pool of
assets therein)  with  respect to  a  Series of  Certificates  as a  REMIC  (see
"Certain Federal Income Tax Consequences"), substitutions will be made only upon
receipt  by the Trustee of an opinion  of counsel or other evidence satisfactory
to the Trustee to  the effect that  such substitution will  not cause the  Trust
Estate  (or segregated pool of  assets) to be subject  to the tax on "prohibited
transactions" imposed  by  Code Section  860F(a),  otherwise subject  the  Trust
Estate (or segregated pool of assets) to tax, cause any replacement mortgage not
to  constitute a  "qualified replacement  mortgage" within  the meaning  of Code
Section 860G(a)(4), or cause the Trust Estate (or segregated pool of assets)  to
fail to qualify as a REMIC. See "The Trust Estates--Mortgage Loans" with respect
to  certain obligations of  PHMC in connection  with defective documentation and
breaches of representations and warranties as to the Mortgage Loans.
 
    The Trustee will be authorized to appoint a custodian to maintain possession
of the documents relating  to the Mortgage  Loans and to  conduct the review  of
such  documents  described  above.  The  custodian  will  keep  and  review such
documents as the Trustee's agent under a custodial agreement.
 
  REPRESENTATIONS AND WARRANTIES
 
    Unless otherwise provided in the applicable Pooling and Servicing  Agreement
for  a Series, the Seller will represent and warrant to the Trustee, among other
things, that as of the date of execution of the Pooling and Servicing Agreement,
with respect to the Mortgage Loans, or each Mortgage Loan, as the case may be:
 
        (i)   the  information set  forth  in  the schedule  of  Mortgage  Loans
    appearing  as an exhibit to such  Pooling and Servicing Agreement is correct
    in all  material  respects  at  the date  or  dates  respecting  which  such
    information is furnished as specified therein;
 
        (ii)  immediately prior to  the transfer and  assignment contemplated by
    the Pooling and Servicing Agreement, the Seller is the sole owner and holder
    of the Mortgage Loan, free and clear of any and all liens, pledges,  charges
    or security interests of any nature and has full right and authority to sell
    and assign the same;
 
        (iii)  the Mortgage is a valid, subsisting and enforceable first lien on
    the related Mortgaged Property, and the Mortgaged Property is free and clear
    of all encumbrances  and liens having  priority over the  first lien of  the
    Mortgage  except for liens for real estate taxes and special assessments not
    yet due and payable and liens or  interests arising under or as a result  of
    any  federal,  state  or  local law,  regulation  or  ordinance  relating to
    hazardous wastes or hazardous substances; and, if the Mortgaged Property  is
    a  condominium unit, any  lien for common charges  permitted by statute; and
    any security agreement, chattel mortgage or equivalent document related  to,
    and  delivered to the Trustee with, any Mortgage establishes in the Seller a
    valid first lien on the property  described therein and the Seller has  full
    right to sell and assign the same to the Trustee;
 
        (iv)  neither the  Seller nor  any prior holder  of the  Mortgage or the
    related Mortgage Note  has modified  the Mortgage in  any material  respect;
    satisfied,  cancelled or subordinated  the Mortgage or  the related Mortgage
    Note in whole or in part; or released the Mortgaged Property in whole or  in
    part  from the lien of the Mortgage;  or executed any instrument of release,
    cancellation, modification or satisfaction, except in each case as reflected
    in a  document delivered  by the  Seller to  the Trustee  together with  the
    related Mortgage;
 
        (v)  all taxes, governmental assessments, insurance premiums, and water,
    sewer and municipal charges previously due  and owing have been paid, or  an
    escrow  of funds in  an amount sufficient  to pay for  every such item which
    remains unpaid has been established to the extent permitted by law; and  the
 
                                       18
<PAGE>
    Seller  has not advanced funds  or received any advance  of funds by a party
    other than the  mortgagor, directly  or indirectly (except  pursuant to  any
    Buy-Down  Loan or Subsidy  Loan arrangement), for the  payment of any amount
    required by the Mortgage, except for interest accruing from the date of  the
    related Mortgage Note or date of disbursement of the Mortgage Loan proceeds,
    whichever is later, to the date which precedes by 30 days the first Due Date
    under the related Mortgage Note;
 
        (vi)  to  the best  of the  Seller's knowledge,  there is  no proceeding
    pending or threatened for the total or partial condemnation of the Mortgaged
    Property and the Mortgaged Property is undamaged by water, fire,  earthquake
    or  earth movement, windstorm, flood, tornado or similar casualty (excluding
    casualty from the presence of  hazardous wastes or hazardous substances,  as
    to  which the Seller makes no representation), so as to affect adversely the
    value of the Mortgaged Property as security for the Mortgage Loan or the use
    for which the premises were intended;
 
        (vii) the Mortgaged  Property is free  and clear of  all mechanics'  and
    materialmen's  liens or liens in the nature thereof; provided, however, that
    this warranty shall  be deemed  not to  have been made  at the  time of  the
    initial  issuance  of  the  Certificates if  a  title  policy  affording, in
    substance, the same protection afforded by this warranty is furnished to the
    Trustee by the Seller;
 
        (viii) except for Mortgage Loans secured by shares in cooperatives,  the
    Mortgaged  Property consists  of a  fee simple  or leasehold  estate in real
    property, all of  the improvements  which are  included for  the purpose  of
    determining  the appraised value of the Mortgaged Property lie wholly within
    the boundaries  and  building restriction  lines  of such  property  and  no
    improvements  on adjoining  properties encroach upon  the Mortgaged Property
    (unless insured against under the applicable title insurance policy) and, to
    the  best  of  the  Seller's  knowledge,  the  Mortgaged  Property  and  all
    improvements  thereon comply with all  requirements of any applicable zoning
    and subdivision laws and ordinances;
 
        (ix) the Mortgage  Loan meets, or  is exempt from,  applicable state  or
    federal  laws, regulations and  other requirements pertaining  to usury, and
    the Mortgage Loan is not usurious;
 
        (x) to the best of the Seller's knowledge, all inspections, licenses and
    certificates required to  be made  or issued  with respect  to all  occupied
    portions  of  the  Mortgaged  Property  and, with  respect  to  the  use and
    occupancy of  the  same, including,  but  not limited  to,  certificates  of
    occupancy  and fire  underwriting certificates,  have been  made or obtained
    from the appropriate authorities;
 
        (xi) all payments  required to be  made up to  the Due Date  immediately
    preceding  the Cut-Off Date  for such Mortgage  Loan under the  terms of the
    related Mortgage Note have been made;
 
        (xii) the  Mortgage  Note, the  related  Mortgage and  other  agreements
    executed  in connection therewith are genuine,  and each is the legal, valid
    and binding obligation of the maker thereof, enforceable in accordance  with
    its  terms  except  as  such  enforcement  may  be  limited  by  bankruptcy,
    insolvency, reorganization or other  similar laws affecting the  enforcement
    of  creditors' rights generally and by general equity principles (regardless
    of whether such enforcement  is considered in a  proceeding in equity or  at
    law);  and,  to the  best  of the  Seller's  knowledge, all  parties  to the
    Mortgage Note and the  Mortgage had legal capacity  to execute the  Mortgage
    Note  and the Mortgage and each Mortgage Note and Mortgage has been duly and
    properly executed by the mortgagor;
 
        (xiii) any and all requirements of any federal, state or local law  with
    respect  to  the  origination  of  the  Mortgage  Loans  including,  without
    limitation, truth-in-lending,  real estate  settlement procedures,  consumer
    credit protection, equal credit opportunity or disclosure laws applicable to
    the Mortgage Loans have been complied with;
 
        (xiv)  the proceeds  of the  Mortgage Loans  have been  fully disbursed,
    there is  no requirement  for future  advances thereunder  and any  and  all
    requirements as to completion of any on-site or off-site improvements and as
    to  disbursements  of any  escrow funds  therefor  have been  complied with,
    except for escrow funds for exterior items which could not be completed  due
    to weather; and all costs, fees
 
                                       19
<PAGE>
    and expenses incurred in making, closing or recording the Mortgage Loan have
    been  paid, except recording fees with  respect to Mortgages not recorded as
    of the date of the Pooling and Servicing Agreement;
 
        (xv) the Mortgage Loan  (except any Mortgage  Loan secured by  Mortgaged
    Property  located in  Iowa, as to  which an  opinion of counsel  of the type
    customarily rendered in  such State in  lieu of title  insurance is  instead
    received)  is covered by  an ALTA mortgagee title  insurance policy or other
    generally acceptable  form of  policy  or insurance  acceptable to  FNMA  or
    FHLMC,  issued by a title  insurer acceptable to FNMA  or FHLMC insuring the
    originator, its successors and assigns, as to the first priority lien of the
    Mortgage in the original principal amount  of the Mortgage Loan and  subject
    only  to (A) the lien of current real property taxes and assessments not yet
    due and payable, (B) covenants, conditions and restrictions,  rights-of-way,
    easements  and other matters of public record as of the date of recording of
    such Mortgage acceptable  to mortgage  lending institutions in  the area  in
    which  the Mortgaged Property is located  or specifically referred to in the
    appraisal performed  in  connection  with the  origination  of  the  related
    Mortgage  Loan, (C)  liens created pursuant  to any federal,  state or local
    law, regulation or ordinance  affording liens for the  costs of clean-up  of
    hazardous   substances  or  hazardous  wastes  or  for  other  environmental
    protection purposes and (D) such other matters to which like properties  are
    commonly  subject which do not individually, or in the aggregate, materially
    interfere with the benefits of the  security intended to be provided by  the
    Mortgage;  the Seller is the sole  insured of such mortgagee title insurance
    policy, the  assignment to  the Trustee  of the  Seller's interest  in  such
    mortgagee  title  insurance  policy  does  not  require  any  consent  of or
    notification to  the insurer  which  has not  been  obtained or  made,  such
    mortgagee  title insurance policy is in full force and effect and will be in
    full force and effect and inure to the benefit of the Trustee and no  claims
    have  been made  under such mortgagee  title insurance policy,  and no prior
    holder of the related  Mortgage, including the Seller,  has done, by act  or
    omission,  anything which would impair the  coverage of such mortgagee title
    insurance policy;
 
        (xvi) the Mortgaged Property securing  each Mortgage Loan is insured  by
    an insurer acceptable to FNMA or FHLMC against loss by fire and such hazards
    as  are covered under a standard extended coverage endorsement, in an amount
    which is not  less than the  lesser of 100%  of the insurable  value of  the
    Mortgaged  Property and  the outstanding  principal balance  of the Mortgage
    Loan, but  in no  event less  than  the minimum  amount necessary  to  fully
    compensate  for  any damage  or loss  on  a replacement  cost basis;  if the
    Mortgaged Property is a condominium unit, it is included under the  coverage
    afforded  by a blanket  policy for the  project; if upon  origination of the
    Mortgage Loan, the improvements  on the Mortgaged Property  were in an  area
    identified  in  the Federal  Register  by the  Federal  Emergency Management
    Agency as having special flood hazards, a flood insurance policy meeting the
    requirements  of   the  current   guidelines   of  the   Federal   Insurance
    Administration  is in effect with  a generally acceptable insurance carrier,
    in an  amount representing  coverage not  less  than the  least of  (A)  the
    outstanding  principal balance of the Mortgage  Loan, (B) the full insurable
    value and (C) the maximum amount of insurance which was available under  the
    Flood  Disaster  Protection Act  of 1973;  and  each Mortgage  obligates the
    mortgagor thereunder to maintain all such insurance at the mortgagor's  cost
    and expense;
 
        (xvii)  to  the best  of the  Seller's knowledge,  there is  no default,
    breach, violation or event  of acceleration existing  under any Mortgage  or
    the  related Mortgage Note and  no event which, with  the passage of time or
    with notice and the expiration of any grace or cure period, would constitute
    a default, breach, violation  or event of acceleration;  and the Seller  has
    not  waived  any default,  breach, violation  or  event of  acceleration; no
    foreclosure action is threatened or has  been commenced with respect to  the
    Mortgage Loan;
 
        (xviii)  no  Mortgage  Note  or  Mortgage is  subject  to  any  right of
    rescission, set-off,  counterclaim  or  defense, including  the  defense  of
    usury,  nor will the operation  of any of the terms  of the Mortgage Note or
    Mortgage, or  the exercise  of any  right thereunder,  render such  Mortgage
    unenforceable, in whole or
 
                                       20
<PAGE>
    in  part, or subject it to any right of rescission, set-off, counterclaim or
    defense, including the defense  of usury, and no  such right of  rescission,
    set-off, counterclaim or defense has been asserted with respect thereto;
 
        (xix)  each Mortgage Note  is payable in  monthly payments, resulting in
    complete amortization of the Mortgage Loan over a term of not more than  360
    months;
 
        (xx) each Mortgage contains customary and enforceable provisions such as
    to  render the rights  and remedies of  the holder thereof  adequate for the
    realization against the Mortgaged Property of the benefits of the  security,
    including  realization by  judicial foreclosure  (subject to  any limitation
    arising from  any bankruptcy,  insolvency or  other law  for the  relief  of
    debtors),  and there  is no  homestead or  other exemption  available to the
    mortgagor which would interfere with such right of foreclosure;
 
        (xxi) to the best of the Seller's knowledge, no mortgagor is a debtor in
    any state or federal bankruptcy or insolvency proceeding;
 
        (xxii) each  Mortgaged Property  is  located in  the United  States  and
    consists of a one- to four-unit single family residential property which may
    include a detached home, townhouse, condominium unit, unit in a planned unit
    development or a leasehold interest with respect to any of the foregoing or,
    in  the case of Mortgage Loans secured  by shares of cooperatives, leases or
    occupancy agreements;
 
        (xxiii) no payment required under any Mortgage Loan is more than 30 days
    past due and no Mortgage Loan had more than one delinquency in the preceding
    13 months; and
 
        (xxiv) with respect to  each Buy-Down Loan, the  funds deposited in  the
    Buy-Down Fund, if any, will be sufficient, together with interest thereon at
    the  rate  customarily  received by  the  Seller on  such  funds, compounded
    monthly, and adding  the amounts required  to be paid  by the mortgagor,  to
    make  the scheduled payments stated in the Mortgage Note for the term of the
    buy-down agreement.
 
    No representations or warranties are made by the Seller as to the absence or
effect of  hazardous wastes  or hazardous  substances on  any of  the  Mortgaged
Properties  or on  the lien of  any Mortgage or  with respect to  the absence or
effect of  fraud in  the  origination of  any Mortgage  Loan,  and any  loss  or
liability  resulting  from  the presence  or  effect of  such  hazardous wastes,
hazardous substances or fraud  will be borne  solely by Certificateholders.  See
"Certain  Legal  Aspects  of the  Mortgage  Loans--Environmental Considerations"
below.
 
    See "The Trust  Estates--Mortgage Loans"  for a description  of the  limited
remedies  available in connection with breaches of the foregoing representations
and warranties.
 
  OPTIONAL REPURCHASES
 
    The Seller may, at its option, repurchase any defaulted Mortgage Loan if, in
the Seller's judgment,  the related default  is not  likely to be  cured by  the
borrower,  at a price equal to the unpaid principal balance thereof plus accrued
interest thereon and under the conditions set forth in the applicable Prospectus
Supplement.
 
                        DESCRIPTION OF THE CERTIFICATES
 
GENERAL
 
    Each Series  of  Certificates will  be  issued  pursuant to  a  Pooling  and
Servicing  Agreement (the "Pooling and Servicing Agreement") between the Seller,
the Servicer, and  the Trustee  named in the  applicable Prospectus  Supplement.
Each  Pooling and Servicing Agreement will  contain substantially the same terms
and conditions, except  for revisions  of defined terms  and certain  provisions
regarding  distributions to Certificateholders, credit support and other similar
matters. Illustrative forms of Pooling  and Servicing Agreement have been  filed
as  exhibits to the Registration  Statement of which this  Prospectus is a part.
The following summaries describe certain  provisions common to the  Certificates
and to each Pooling and
 
                                       21
<PAGE>
Servicing Agreement. The summaries do not purport to be complete and are subject
to,  and are qualified in their entirety  by reference to, all of the provisions
of the Pooling and Servicing Agreement  for each Series of Certificates and  the
applicable  Prospectus Supplement. Wherever particular sections or defined terms
of the Pooling and Servicing Agreement are referred to, such sections or defined
terms are thereby incorporated herein by reference from the forms of Pooling and
Servicing Agreement filed as exhibits to the Registration Statement.
 
    Each Series  of  Certificates  will represent  ownership  interests  in  the
related  Trust Estate. An election  may be made to treat  the Trust Estate (or a
segregated pool of assets therein) with respect to a Series of Certificates as a
REMIC. If such  an election is  made, such Series  will consist of  one or  more
Classes  of  Certificates that  will  represent "regular  interests"  within the
meaning of Code Section 860G(a)(1) (such Class or Classes collectively  referred
to as the "Regular Certificates") and one Class or Subclass of Certificates with
respect to each REMIC that will be designated as "residual interests" within the
meaning  of Code  Section 860G(a)(2) (the  "Residual Certificates") representing
the right to receive distributions as specified in the Prospectus Supplement for
such Series. See "Certain Federal Income Tax Consequences" herein.
 
    The Seller may sell certain Classes  or Subclasses of the Certificates of  a
Series, including one or more Classes of Subordinated Certificates, in privately
negotiated  transactions  exempt  from registration  under  the  Securities Act.
Alternatively, if  so specified  in  a Prospectus  Supplement relating  to  such
Subordinated  Certificates,  the Seller  may offer  one or  more Classes  of the
Subordinated Certificates  of a  Series by  means of  this Prospectus  and  such
Prospectus Supplement.
 
    Unless  otherwise  specified in  the  applicable Prospectus  Supplement with
respect to a Series of Certificates, each Certificate offered hereby and by  the
applicable  Prospectus Supplement will  be issued in  fully registered form. The
Certificates of  a  Series  offered  hereby  and  by  means  of  the  applicable
Prospectus  Supplements will be  transferable and exchangeable  at the office or
agency maintained by the Trustee or such other entity for such purpose set forth
in the related  Prospectus Supplement. No  service charge will  be made for  any
transfer  or exchange of Certificates, but the  Trustee or such other entity may
require payment  of a  sum sufficient  to cover  any tax  or other  governmental
charge  in  connection with  such transfer  or  exchange. In  the event  that an
election is made  to treat  the Trust  Estate (or  a segregated  pool of  assets
therein)  as a REMIC, no  legal or beneficial interest in  all or any portion of
the "residual interest" thereof  may be transferred without  the receipt by  the
transferor  of an affidavit signed by the transferee stating that the transferee
is not a disqualified organization within the meaning of Code Section 860E(e) or
an agent (including  a broker, nominee,  or middleman) thereof  or a  Book-Entry
Nominee    (as   defined    herein).   See    "Certain   Federal    Income   Tax
Consequences--Federal Income Tax Consequences for REMIC Certificates--  Taxation
of  Residual  Certificates--Tax-Related  Restrictions  on  Transfer  of Residual
Certificates." In the  event that an  election is  not made to  treat the  Trust
Estate  (or a  segregated pool  of assets therein)  as a  REMIC, no Subordinated
Certificate may  be transferred  unless an  appropriate ruling  of the  Internal
Revenue  Service  or opinion  of  counsel is  obtained  to the  effect  that the
transfer will not result in the  arrangement contemplated under the Pooling  and
Servicing  Agreement being  treated as an  association taxable  as a corporation
under the Code.
 
    Unless  otherwise  specified  in   the  applicable  Prospectus   Supplement,
distributions  to  Certificateholders  of  all  Series  (other  than  the  final
distribution in retirement of the Certificates) will be made by check mailed  to
the  address of  the person  entitled thereto as  it appears  on the certificate
register, except that, with  respect to any holder  of a Certificate  evidencing
not  less  than  a certain  minimum  denomination  set forth  in  the applicable
Prospectus  Supplement,  distributions  will  be   made  by  wire  transfer   in
immediately  available funds,  provided that the  Servicer, or  the Paying Agent
acting on behalf  of the Servicer,  shall have been  furnished with  appropriate
wiring  instructions  not less  than three  business days  prior to  the related
Distribution Date. The final distribution in retirement of Certificates will  be
made  only upon presentation and surrender of  the Certificates at the office or
agency maintained by the Trustee or other entity for such purpose, as  specified
in the final distribution notice to Certificateholders.
 
                                       22
<PAGE>
    A  Series of Certificates  will consist of  one or more  Classes of Standard
Certificates  or  Stripped  Certificates  (referred  to  hereinafter   sometimes
collectively as "Percentage Certificates") or two or more Classes of Multi-Class
Certificates (each as described below).
 
PERCENTAGE CERTIFICATES
 
    Each  Series of Percentage  Certificates may include one  or more Classes of
Standard Certificates  or  Stripped Certificates,  any  Class of  which  may  be
divided  into two  or more Subclasses.  The Standard Certificates  of each Class
will evidence  fractional  undivided  interests  in all  of  the  principal  and
interest  (to the  extent of  the Net  Mortgage Interest  Rate) payments  on the
Mortgage Loans comprising the Trust Estate  related to such Series. Each  holder
of  a  Standard  Certificate  of  a  Class  will  be  entitled  to  receive  its
Certificate's percentage interest of the portion of the Pool Distribution Amount
(as defined below)  allocated to  such Class.  The percentage  interest of  each
Standard  Certificate will be  equal to the percentage  obtained by dividing the
aggregate unpaid principal  balance of  the Mortgage Loans  represented by  such
Standard  Certificate as of  the Cut-Off Date by  the aggregate unpaid principal
balance of the Mortgage  Loans represented by all  the Standard Certificates  of
the same Class as of the Cut-Off Date.
 
    The  Stripped Certificates of each  Class will evidence fractional undivided
interests in specified portions of the principal and/or interest payments on the
Mortgage Loans comprising the Trust Estate  related to such Series. The  holders
of the Stripped Certificates of each Class will be entitled to receive a portion
(which  may be zero) as specified in the applicable Prospectus Supplement of the
principal distributions comprising the Pool  Distribution Amount, and a  portion
(which  may be zero) as specified in the applicable Prospectus Supplement of the
interest  distributions  comprising  the   Pool  Distribution  Amount  on   each
Distribution Date.
 
    In  the case of  Classes of Stripped  Certificates representing interests in
interest distributions on the Mortgage Loans and not in principal  distributions
on  the  Mortgage  Loans,  such Certificates  will  be  denominated  in notional
amounts. The aggregate original notional amount for a Class of such Certificates
will be equal to the aggregate unpaid principal balance (or a specified  portion
thereof)  of  the  Mortgage  Loans  as of  the  Cut-Off  Date  specified  in the
applicable Prospectus  Supplement. The  notional amount  of each  such  Stripped
Certificate  will  be used  to  calculate the  holder's  pro rata  share  of the
interest distributions on the Mortgage Loans allocated to that Class and for the
determination of  certain other  rights of  holders of  such Class  of  Stripped
Certificates  and will not represent an interest  in, or entitle any such holder
to any distribution with respect to, any principal distributions on the Mortgage
Loans. Each such Certificate's  pro rata share of  the interest distribution  on
the  Mortgage Loans on each Distribution  Date will be calculated by multiplying
the interest distributions  on the Mortgage  Loans allocated to  its Class by  a
fraction,  the  numerator  of which  is  the  original notional  amount  of such
Stripped Certificate  and the  denominator of  which is  the aggregate  original
notional amount of all the Stripped Certificates of its Class.
 
    The  interest of a Class of Percentage Certificates representing an interest
in a Trust Estate (or a segregated pool of assets therein) with respect to which
an election to be  treated as a REMIC  has been made may  be fixed as  described
above  or may  vary over  time as  a result  of prepayments  received and losses
realized on the underlying Mortgage  Loans. A Series of Percentage  Certificates
comprised  of Classes whose percentage interests in the Trust Estate may vary is
referred  to  herein   as  a   Series  of   "Shifting  Interest   Certificates."
Distributions  on,  and  subordination arrangements  with  respect  to, Shifting
Interest Certificates are discussed below under the headings "Description of the
Certificates--Distributions to Percentage Certificateholders--Shifting  Interest
Certificates" and "Credit Support--Subordination--Shifting Interest
Certificates."
 
MULTI-CLASS CERTIFICATES
 
    Each  Series may  include two or  more Classes  of Multi-Class Certificates.
Each Multi-Class Certificate will be assigned a Stated Amount. The Stated Amount
may be based on an  amount of principal of the  underlying Mortgage Loans or  on
the  value of  an amount  of future  cash flows  from the  related Trust Estate,
without distinction as to principal and interest received on the Mortgage Loans.
The initial Stated Amount of
 
                                       23
<PAGE>
each Class within a Series of Multi-Class Certificates will be specified in  the
applicable  Prospectus  Supplement.  Interest  on  the  Classes  of  Multi-Class
Certificates will be paid  at rates specified in  or determined as specified  in
the  applicable Prospectus Supplement,  and will accrue  in the manner specified
therein. Each Series of Multi-Class Certificates may include one or more Classes
of Certificates on which interest accrues but is not payable until such time  as
specified   in   the  applicable   Prospectus  Supplement   ("Compound  Interest
Certificates"), and interest  accrued on  any such Class  will be  added to  the
Stated Amount thereof in the manner described therein.
 
DISTRIBUTIONS TO PERCENTAGE CERTIFICATEHOLDERS
 
  CERTIFICATES OTHER THAN SHIFTING INTEREST CERTIFICATES
 
    Except as otherwise specified in the applicable Prospectus Supplement, on or
about  the  17th day  of each  month in  which a  Distribution Date  occurs (the
"Determination Date"), the Servicer will  determine the amount of the  principal
and interest payments on the Mortgage Loans which will be distributed to holders
of  each  Class  and  Subclass  of  Percentage  Certificates  on  the succeeding
Distribution Date. Such amounts will be  distributed, pro rata, to holders of  a
Class  or  Subclass of  Percentage  Certificates (other  than  Shifting Interest
Certificates) except, in  the case of  Subordinated Certificateholders, for  any
amounts required to be paid to the holders of the related Senior Certificates or
deposited in the related Subordination Reserve Fund, if any. If the Certificates
of  a Class include two  or more Subclasses, the  allocation of distributions of
principal and interest among such Subclasses will be as specified in the related
Prospectus Supplement.
 
    CALCULATION OF  DISTRIBUTABLE  AMOUNTS.   On  each Determination  Date,  the
Servicer   will  calculate   the  "Distributable   Amount"  for   the  following
Distribution Date for each Class of Certificates. Unless otherwise specified  in
the  applicable Prospectus Supplement,  the Distributable Amount  for a Class of
Senior Certificates (a "Senior Class") of  a Series on a Distribution Date  (the
"Senior Class Distributable Amount") will be an amount equal to the sum of:
 
         (i)  the aggregate  undivided interest,  expressed as  a percentage and
    specified  in  the  applicable  Prospectus  Supplement,  evidenced  by   all
    Certificates of such Senior Class (the "Senior Class Principal Portion") of:
 
           (a)  all scheduled payments of principal on each outstanding Mortgage
       Loan  that  became  due  on  the  Due  Date  immediately  preceding  such
       Distribution  Date in accordance  with the amortization  schedules of the
       related Mortgage  Loans  (as adjusted  to  give effect  to  any  previous
       prepayments),  whether or not such payments were actually received by the
       Servicer (the aggregate of  such scheduled payments due  on any such  Due
       Date  being referred to herein as "Scheduled Principal"), and all partial
       principal  prepayments  received  by  the   Servicer  on  or  after   the
       Determination  Date  in  the  month  preceding  the  month  in  which the
       Distribution Date occurs (or after the  Cut-Off Date, in the case of  the
       first Distribution Date) and prior to the Determination Date occurring in
       the month in which the Distribution Date occurs ("Curtailments");
 
           (b) all principal prepayments in full received by the Servicer during
       the month preceding the month in which such Distribution Date occurs; and
 
           (c)  the  unpaid principal  balance,  less any  amounts  with respect
       thereto constituting Late  Payments (as herein  defined) attributable  to
       principal,  and  less  any unreimbursed  Periodic  Advances  with respect
       thereto, of each  Mortgage Loan which  was repurchased by  the Seller  or
       purchased by the Servicer, as the case may be (as described in "The Trust
       Estates--Mortgage  Loans--Assignment of  Mortgage Loans  to the Trustee",
       "--Optional   Repurchases,"    and    "The    Pooling    and    Servicing
       Agreement--Termination;  Purchase of Certificates"), and of each Mortgage
       Loan in respect of which property was acquired, liquidated or foreclosed,
       and with respect to which  Liquidation Proceeds (as defined herein)  were
       received, during the month preceding the month in which such Distribution
       Date  occurs,  determined as  of  the date  each  such Mortgage  Loan was
       repurchased or purchased, as the case may be, or as of the date each such
       related property was acquired, liquidated or foreclosed, as the case  may
       be; and
 
                                       24
<PAGE>
        (ii)  interest  at  the  applicable Pass-Through  Rate  from  the second
    preceding Due Date to the  Due Date immediately preceding such  Distribution
    Date  on  the  Senior Class  Principal  Portion of  the  aggregate principal
    balance of  the  Mortgage Loans  as  of  the Cut-Off  Date,  less  scheduled
    amortization of principal thereon and any principal prepayments with respect
    thereto  through  the second  preceding Due  Date (the  "Scheduled Principal
    Balance"), whether  or  not  such  interest was  actually  received  by  the
    Servicer;  provided that interest attributable to the accrual of interest on
    any prepaid  Mortgage  Loan at  the  Net  Mortgage Interest  Rate  for  such
    Mortgage  Loan from the date of its  prepayment in full through the last day
    of the month in which such prepayment in full occurred ("Prepayment Interest
    Shortfall") is included only to the extent that funds for such purposes  are
    available out of the aggregate Servicing Fees; and
 
        (iii)  the sum of (a) the portion  that was included in the Senior Class
    Distributable Amount on  a prior  Distribution Date  of the  amount of  each
    scheduled  payment of principal and interest on  a Mortgage Loan not paid by
    the mortgagor  when  due, net  of  any unreimbursed  Periodic  Advance  with
    respect  thereto that was included in the Distributable Amount of each Class
    on a prior Distribution Date but  was not included in the Pool  Distribution
    Amount  until  the  current  Distribution Date  (such  net  amount,  a "Late
    Payment"), less the  aggregate amount, if  any, received by  the holders  of
    such  Senior  Certificates  on any  prior  Distribution Date  or  Dates with
    respect to such  Late Payment  from amounts otherwise  distributable to  the
    holders  of  Subordinated  Certificates  and  from  any  credit  enhancement
    available for the benefit of the Senior Certificateholders, and (b) interest
    on the amount set forth  in clause (a) above  at the Pass-Through Rate  from
    the  Distribution Date on which such Late  Payment was first included in the
    Distributable  Amount   for  such   Senior  Certificates   to  the   current
    Distribution  Date (the "Late Payment  Period"); provided that the foregoing
    amount will  be included  in  the Senior  Class  Distributable Amount  on  a
    Distribution  Date only to  the extent such  amount is included  in the Pool
    Distribution Amount with respect to such Distribution Date.
 
    Unless otherwise  specified in  the  applicable Prospectus  Supplement,  the
Distributable  Amount for a Class of Subordinated  Certificates of a Series on a
Distribution Date (the  "Subordinated Class  Distributable Amount")  will be  an
amount equal to the sum of:
 
         (i)  the aggregate  undivided interest,  expressed as  a percentage and
    specified  in  the  applicable  Prospectus  Supplement,  evidenced  by   all
    Subordinated Certificates (the "Subordinated Class Principal Portion") of:
 
           (a) all Scheduled Principal and all Curtailments;
 
           (b) all principal prepayments in full received by the Servicer during
       the month preceding the month in which such Distribution Date occurs; and
 
           (c)  the  unpaid principal  balance,  less any  amounts  with respect
       thereto constituting Late  Payments attributable to  principal, and  less
       any unreimbursed Periodic Advances with respect thereto, of each Mortgage
       Loan  which was repurchased  by the Seller or  purchased by the Servicer,
       and of each  Mortgage Loan  in respect  of which  property was  acquired,
       liquidated  or foreclosed, and with respect to which Liquidation Proceeds
       were received,  during  the  month  preceding the  month  in  which  such
       Distribution  Date occurs, determined  as of the  date each such Mortgage
       Loan was repurchased or purchased, as the case may be, or as of the  date
       each such related property was acquired, liquidated or foreclosed, as the
       case may be; and
 
        (ii)  interest  at  the  applicable Pass-Through  Rate  from  the second
    preceding Due Date to the  Due Date immediately preceding such  Distribution
    Date  on the Subordinated Class Principal Portion of the Scheduled Principal
    Balance of the Mortgage  Loans as of the  Determination Date preceding  such
    Distribution  Date, whether or not such  interest was actually received with
    respect to the Mortgage Loans;  provided that Prepayment Interest  Shortfall
    is  included only to the  extent that funds for  such purposes are available
    from the aggregate Servicing Fees; and
 
                                       25
<PAGE>
        (iii) the  sum  of  (a) each  Late  Payment  that was  included  in  the
    Subordinated  Class Distributable Amount  on a prior  Distribution Date plus
    the aggregate amount, if any,  received by the Senior Certificateholders  on
    any  prior Distribution Date or Dates with respect to such Late Payment from
    amounts  otherwise   available   for  distribution   to   the   Subordinated
    Certificateholders  on such  prior Distribution Date  or Dates,  or from the
    Subordination Reserve Fund and not attributable to the Initial Deposit,  and
    (b) interest on the amount set forth in clause (a) above at the Pass-Through
    Rate during the Late Payment Period; provided that the foregoing amount will
    be   included  in  the  Subordinated  Class  Distributable  Amount  on  such
    Distribution Date only  to the extent  such amount is  included in the  Pool
    Distribution Amount with respect to such Distribution Date.
 
    DETERMINATION  OF AMOUNTS TO BE DISTRIBUTED.   Unless otherwise specified in
the applicable  Prospectus  Supplement,  funds  available  for  distribution  to
Certificateholders  of a Series of Percentage  Certificates with respect to each
Distribution Date for such Series (the  "Pool Distribution Amount") will be  the
sum  of all  previously undistributed payments  or other receipts  on account of
principal (including principal prepayments and Liquidation Proceeds, if any) and
interest on or in respect of the related Mortgage Loans received by the Servicer
after the Cut-Off Date (except for amounts due on or prior to the Cut-Off Date),
or received by the Servicer  on or prior to the  Cut-Off Date but due after  the
Cut-Off  Date, in either case received on  or prior to the Determination Date in
the month in  which such Distribution  Date occurs, plus  all Periodic  Advances
made by the Servicer with respect to payments due to be received on the Mortgage
Loans  on  the Due  Date  preceding such  Distribution  Date, but  excluding the
following:
 
        (a)  amounts  received  as  late  payments  of  principal  or   interest
    respecting  which the Servicer previously has  made one or more unreimbursed
    Periodic Advances;
 
        (b) unreimbursed Periodic Advances  with respect to liquidated  Mortgage
    Loans;
 
        (c)  those portions of each payment of interest on a particular Mortgage
    Loan which represent  (i) the  Fixed Retained Yield,  if any,  and (ii)  the
    applicable Servicing Fee, as adjusted in respect of principal prepayments in
    full  as  described  in  "Servicing  of  the  Mortgage  Loans--Adjustment to
    Servicing Fee in Connection with Prepaid Mortgage Loans" below;
 
        (d)  all  amounts  representing  scheduled  payments  of  principal  and
    interest  due  after the  Due  Date occurring  in  the month  in  which such
    Distribution Date occurs;
 
        (e) all  principal  prepayments  in full  and  all  proceeds  (including
    Liquidation Proceeds) of any Mortgage Loans, or property acquired in respect
    thereof,  liquidated, foreclosed,  purchased or repurchased  pursuant to the
    applicable Pooling and  Servicing Agreement,  received on or  after the  Due
    Date  occurring in the month in which  such Distribution Date occurs and all
    Curtailments received by  the Servicer  on or after  the Determination  Date
    occurring  in  the month  in which  such Distribution  Date occurs,  and all
    related payments of interest on such amounts;
 
        (f)  that portion  of Liquidation Proceeds  which represents any  unpaid
    Servicing  Fee  to  which the  Servicer  is  entitled and  any  unpaid Fixed
    Retained Yield;
 
        (g) if an election has been made to treat the applicable Trust Estate as
    a REMIC, any Net Foreclosure Profits with respect to such Distribution Date.
    "Net Foreclosure Profits" with  respect to a Distribution  Date will be  the
    excess  of  (i)  the portion  of  aggregate net  Liquidation  Proceeds which
    represents the amount by  which aggregate profits  on Liquidated Loans  with
    respect  to  which  net  Liquidation Proceeds  exceed  the  unpaid principal
    balance thereof plus accrued interest thereon at the Mortgage Interest  Rate
    over  (ii) aggregate  realized losses  on Liquidated  Loans with  respect to
    which net Liquidation Proceeds  are less than  the unpaid principal  balance
    thereof plus accrued interest at the Mortgage Interest Rate.
 
                                       26
<PAGE>
        (h)  all  amounts  representing  certain  expenses  reimbursable  to the
    Servicer and other amounts  permitted to be withdrawn  by the Servicer  from
    the Certificate Account, in each case pursuant to the applicable Pooling and
    Servicing Agreement;
 
        (i)  all amounts in the nature of late fees, assumption fees, prepayment
    fees  and similar fees which the Servicer  is entitled to retain pursuant to
    the applicable Pooling and Servicing Agreement; and
 
        (j)   reinvestment  earnings on  payments  received in  respect  of  the
    Mortgage Loans.
 
    The Servicer will calculate the portion of the Distributable Amount for each
Class  of the Series that  is available to be paid  out of the Pool Distribution
Amount on such  date. The portion  so available  on a Distribution  Date to  the
Senior   Certificateholders   and   to   the   Subordinated   Certificateholders
(respectively, the "Senior Class Pro Rata Share" and the "Subordinated Class Pro
Rata Share")  will  be  the  amount  equal  to  the  product  of  (a)  the  Pool
Distribution  Amount for such date and (b)  a fraction the numerator of which is
the Distributable Amount  for such  Class on such  date and  the denominator  of
which is the sum of the Distributable Amounts for such Series on such date.
 
    On  each Distribution  Date for a  Series of  Percentage Certificates (other
than Shifting Interest Certificates), the holders of the Senior Certificates  of
such  Series will be entitled to receive the Senior Class Pro Rata Share of such
Class on such Distribution Date. In  addition, to the extent credit  enhancement
is  available on such  Distribution Date, the  Senior Certificateholders will be
entitled to receive the  amount by which the  Senior Class Distributable  Amount
plus   any  Senior  Class  Carryover  Shortfall   (as  defined  below)  on  such
Distribution Date exceeds the Senior Class  Pro Rata Share on such  Distribution
Date  (such excess  being referred to  herein as the  "Senior Class Shortfall").
Such credit  support  includes:  (a)  amounts  otherwise  distributable  to  the
Subordinated  Certificateholders on such Distribution Date and amounts available
for such  purpose in  the Subordination  Reserve Fund  as described  below;  (b)
amounts   held  in   the  Certificate   Account  for   future  distributions  to
Certificateholders;  and  (c)  amounts  available  under  any  form  of   credit
enhancement  (other  than subordination)  which is  specified in  the applicable
Prospectus Supplement.  See "Credit  Support"  below. The  manner in  which  any
available  credit support will  be allocated among Subclasses  of a Senior Class
will be set forth in the  applicable Prospectus Supplement. With respect to  any
Distribution  Date, the "Senior Class Carryover  Shortfall" means the excess, if
any, of (a) the amount the Senior Certificateholders were entitled to receive on
the prior  Distribution  Date  less the  amount  the  Senior  Certificateholders
received  on such prior Distribution Date, together with interest thereon at the
Pass-Through Rate of such Senior Class from such prior Distribution Date through
the current Distribution Date, over (b)  the portion of the amount specified  in
clause (a) constituting Late Payments, together with interest on such portion at
the  applicable Pass-Through Rate from such  prior Distribution Date through the
current Distribution Date, to the extent such Late Payments and interest thereon
are included  in  the Pool  Distribution  Amount  with respect  to  the  current
Distribution Date.
 
    With  respect to  a Series of  Percentage Certificates  (other than Shifting
Interest Certificates) including a Class of Subordinated Certificates, once  the
Subordinated  Amount is  reduced to zero,  any remaining  Senior Class Shortfall
with respect to a  Class of Senior  Certificates will cease  to be payable  from
amounts  otherwise distributable to the  Subordinated Certificateholders and the
amounts in  the related  Subordination Reserve  Fund, if  any, except  that  the
portion  of such Senior Class Shortfall which  is attributable to the accrual of
interest on the Senior  Class Carryover Shortfall  (the "Senior Class  Shortfall
Accruals")  shall continue to bear interest at the applicable Pass-Through Rate,
and the Senior Certificateholders shall continue to have a preferential right to
be paid such amounts from distributions otherwise available to the  Subordinated
Certificateholders   until  such  amount  (including  interest  thereon  at  the
applicable   Pass-Through    Rate)    is    paid   in    full.    See    "Credit
Support--Subordination" below.
 
    The  Subordinated  Certificateholders will  be  entitled to  receive  on any
Distribution Date an amount equal to the Subordinated Class Pro Rata Share less:
(a)   any    amounts    required   to    be    distributed   to    the    Senior
 
                                       27
<PAGE>
Certificateholders   pursuant  to  the  subordination   of  the  rights  of  the
Subordinated  Certificateholders  as  described  below;  and  (b)  any   amounts
necessary to fund the Subordination Reserve Fund as described below. See "Credit
Support--Subordination" below.
 
  SHIFTING INTEREST CERTIFICATES
 
    On  each Distribution Date  for a series  of Shifting Interest Certificates,
the Servicer will distribute on behalf of the Trustee or cause the Paying  Agent
to  distribute, as the case may be, to  the holders of record on the Record Date
of a Class of Senior Certificates, to the extent of the Pool Distribution Amount
with respect to  such Distribution Date  (as determined by  the Servicer on  the
related Determination Date in the same manner as described above with respect to
Percentage  Certificates other than Shifting Interest Certificates) and prior to
any distribution being made on the related Subordinated Certificates, an  amount
equal  to the  Senior Class Distribution  Amount. The  Senior Class Distribution
Amount will  (except  as  otherwise  set  forth  in  the  applicable  Prospectus
Supplement)  be calculated for  any Distribution Date  as the lesser  of (x) the
Pool Distribution Amount for such Distribution Date and (y) the sum of:
 
         (i) one month's interest  at the applicable  Pass-Through Rate on  such
    Class's  outstanding principal balance (less, if specified in the applicable
    Prospectus Supplement,  (a) the  amount by  which the  aggregate  Prepayment
    Interest Shortfall with respect to the preceding month exceeds the aggregate
    Servicing  Fees, in each case allocated to such Class on the basis set forth
    in the related Prospectus Supplement and/or (b) one month's interest at  the
    applicable  Net Mortgage Interest Rate on such Class's percentage, specified
    in the applicable Prospectus Supplement, of the Scheduled Principal  Balance
    of  each Special Hazard  Mortgage Loan (as defined  below) covered by clause
    (iv) below);
 
        (ii) if distribution of  the amount of  interest calculated pursuant  to
    clause (i) above on any prior Distribution Date was not made in full on such
    prior  Distribution Date, an amount equal  to (a) the difference between (x)
    the amount of interest which the  holders of such Class would have  received
    on  the prior Distribution Date if there had been sufficient funds available
    in  the  Certificate  Account  and  (y)  the  amount  of  interest  actually
    distributed  to such  holders on such  prior Distribution  Date (the "Unpaid
    Interest  Shortfall")  less   (b)  the  aggregate   amount  distributed   on
    Distribution  Dates subsequent to such  prior Distribution Date with respect
    to the Unpaid Interest Shortfall;
 
        (iii) such Class's percentage, calculated as provided in the  applicable
    Prospectus  Supplement, of  (a) all scheduled  payments of  principal due on
    each outstanding Mortgage Loan,  on the Due Date  occurring in the month  in
    which  the Distribution Date  occurs, (b) all  partial principal prepayments
    received by  the  Servicer in  reduction  of  the unpaid  principal  of  any
    Mortgage  Loan on or after the Determination Date in the month preceding the
    month in which the Distribution Date  occurs (or after the Cut-Off Date,  in
    the case of the first Distribution Date) and prior to the Determination Date
    occurring in the month in which the Distribution Date occurs, and (c) except
    for  Special  Hazard  Mortgage  Loans  covered  by  clause  (iv)  below, the
    Scheduled Principal  Balance  of  each  Mortgage  Loan  which,  during  such
    preceding month, (i) was the subject of a principal prepayment in full, (ii)
    became a liquidated Mortgage Loan, or (iii) was repurchased by the Seller or
    purchased  by the person  or persons specified  in the applicable Prospectus
    Supplement pursuant to the Pooling and Servicing Agreement; and
 
        (iv) such Class's specified percentage  of the net Liquidation  Proceeds
    from  any Mortgage  Loan that became  a Special Hazard  Mortgage Loan during
    such preceding month (but  only if the Special  Hazard Termination Date  (as
    defined below) has occurred);
 
provided  that, if such Distribution Date falls  on or after the Cross-Over Date
(i.e., the date on which the amount of principal payments on the Mortgage  Loans
to  which the holders of the  related Subordinated Certificates are entitled has
been reduced to zero as a result of the allocation of losses to the Subordinated
Certificates), then the Senior Class Distribution Amount will instead equal  the
lesser of (x) the Pool Distribution Amount and (y) the sum of the items referred
to above plus the amount by which such Class's
 
                                       28
<PAGE>
outstanding  principal balance  as of  such Distribution  Date exceeds  the Pool
Scheduled Principal Balance  as of  such Distribution Date.  The Pool  Scheduled
Principal  Balance as of any Distribution Date is the aggregate of the Scheduled
Principal Balances of all Mortgage Loans in a Trust Estate that were outstanding
on the first day of the month prior to the month in which such Distribution Date
falls. The  Pool Scheduled  Principal Balance  is determined  after taking  into
account  all Curtailments applied by the Servicer on such first day of the month
prior to the  month in  which such Distribution  Date falls.  Under its  current
servicing  practices,  Curtailments received  in any  month  are applied  by the
Servicer in reduction of  the unpaid principal balance  of the related  Mortgage
Loan as of the first day of such month.
 
    If  so provided in the applicable Prospectus Supplement, one or more Classes
of Senior  Certificates  will also  be  entitled to  receive,  as its  or  their
specified  percentage(s) referred  to in clauses  (y)(iii)(b) and (y)(iii)(c)(i)
above, all partial principal prepayments  and all principal prepayments in  full
on the Mortgage Loans in the related Trust Estate under the circumstances or for
the period of time specified therein, which will have the effect of accelerating
the  amortization  of the  Senior Certificates  while increasing  the respective
interest evidenced by the Subordinated Certificates in the related Trust Estate.
Increasing the respective interest of the Subordinated Certificates relative  to
that  of the Senior Certificates is intended to preserve the availability of the
subordination provided by the Subordinated Certificates.
 
    If the Special Hazard Termination Date would occur on any Distribution  Date
under  the circumstances  referred to in  "Credit Support--Subordination" below,
the Senior Class Distribution  Amount for each Class  of Senior Certificates  of
such  Series calculated  as set  forth in the  two preceding  paragraphs will be
modified to the extent described in such section.
 
    Amounts distributed to a Class of Senior Certificates on a Distribution Date
will be deemed to be applied first  to the payment of current interest, if  any,
due  on such Class (i.e., the amount calculated pursuant to clause (y)(i) of the
third preceding  paragraph),  second  to  the payment  of  any  Unpaid  Interest
Shortfall  (i.e.,  the  amount calculated  pursuant  to clause  (y)(ii)  of such
paragraph) and third  to the payment  of principal,  if any, due  on such  Class
(i.e.,  the aggregate of the amounts calculated pursuant to clauses (y)(iii) and
(y)(iv) of such paragraph).
 
    As indicated above, in  the event that the  Pool Distribution Amount on  any
Distribution  Date is  not sufficient to  make the full  distribution of current
interest to the holders of a  Class of Senior Certificates entitled to  payments
of  interest, the  difference between the  amount of current  interest which the
holders of such Class would have received on such Distribution Date if there had
been sufficient  funds available  and the  amount actually  distributed will  be
added  to the amount of interest which the holders of such Class are entitled to
receive on  the  next  Distribution  Date. Unless  otherwise  specified  in  the
applicable  Prospectus Supplement, the amount of  any such interest shortfall so
carried forward will not bear interest.
 
    If the Pool Distribution Amount is insufficient on any Distribution Date  to
make  the full distribution of principal due  on a Class of Senior Certificates,
the percentage  of  principal  payments  to which  the  holders  of  the  Senior
Certificates  would be entitled on  the immediately succeeding Distribution Date
will be increased. This increase will have the effect of reducing, as a relative
matter, the respective interest of the holders of the Subordinated  Certificates
in  future payments  of principal  on the  related Mortgage  Loans. If  the Pool
Distribution Amount is not sufficient to make full distribution described  above
to  the holders of all  Classes of Senior Certificates  on any Distribution Date
(assuming that  more than  one Class  or Subclass  of Senior  Certificates of  a
Series has been issued), unless otherwise specified in the applicable Prospectus
Supplement,  the holders of each such Class  or Subclass will share in the funds
actually available in proportion to the respective amounts that each such  Class
or Subclass would have received had the Pool Distribution Amount been sufficient
to  make the full distribution of interest  and principal due to each such Class
or Subclass.
 
    Unless otherwise  provided in  the related  Prospectus Supplement,  on  each
Distribution  Date the holders of the  related Subordinated Certificates will be
entitled  to   receive  (in   the  amounts   specified  therein   if  there   is
 
                                       29
<PAGE>
more  than one Class  of Subordinated Certificates), out  of funds available for
distribution in  the  related Certificate  Account  on such  date,  all  amounts
remaining  after  deduction of  the amounts  required to  be distributed  to the
holders of all Classes of Senior Certificates of the same Series.
 
EXAMPLE OF DISTRIBUTION TO PERCENTAGE CERTIFICATEHOLDERS
 
    The following  chart  sets  forth  an example  of  the  application  of  the
foregoing  provisions  to the  first two  months of  the related  Trust Estate's
existence, assuming the Certificates are issued in the month of January, with  a
Distribution Date on the 25th of each month and a Determination Date on the 17th
of each month:
 
<TABLE>
<S>                               <C>
January 1(A)....................  Cut-Off Date.
January 2-January 31(B).........  The  Servicer receives  any principal  prepayments in full
                                  (including prepayments  due to  liquidation) and  interest
                                  thereon to date of prepayment.
January 31(C)...................  Record Date.
February 1-February 17(D).......  The  Servicer receives scheduled payments of principal and
                                  interest due on February 1.
February 17(E)..................  Determination Date.
February 25(F)..................  Distribution Date.
</TABLE>
 
- ------------------------
(A) The initial unpaid principal balance of the Mortgage Loans in a Trust Estate
    would be the aggregate unpaid principal balance of the Mortgage Loans at the
    close of business on January 1, after deducting principal payments due on or
    before such date. Those  principal payments due on  or before January 1  and
    the  related interest payments,  would not be  part of the  Trust Estate and
    would be remitted by the Servicer to the Seller when received.
 
(B) Principal prepayments in full received during this period would be  credited
    to  the Certificate  Account for  distribution to  Certificateholders on the
    February 25 Distribution Date.  When a Mortgage Loan  is prepaid in full  or
    liquidated or an insurance claim with respect to a Mortgage Loan is settled,
    interest  on the  amount prepaid,  liquidated or  received in  settlement is
    collected only from the last scheduled  Due Date to the date of  prepayment,
    liquidation  or settlement. In addition, when  a Mortgage Loan is prepaid in
    part and  such payment  is applied  as  of a  date other  than a  Due  Date,
    interest  is charged on such payment only to the date applied. To the extent
    funds are available from the aggregate Servicing Fees relating to  mortgagor
    payments  or  other  recoveries  distributed  to  Certificateholders  on the
    related Distribution Date, the Servicer would make an additional payment  to
    Certificateholders with respect to any Mortgage Loan that prepaid in full in
    January  equal to the  amount of interest  on such Mortgage  Loan at the Net
    Mortgage Interest  Rate  for  such  Mortgage Loan  from  the  date  of  such
    prepayment in full through January 31.
 
(C) Distributions in the month of February will be made to Certificateholders of
    record at the close of business on this date.
 
(D)  Scheduled monthly  payments on  the Mortgage Loans  due on  February 1, and
    partial principal prepayments received by  the Servicer in reduction of  the
    unpaid  principal balance of any Mortgage Loan prior to February 17, will be
    deposited in the Certificate Account as received by the Servicer and will be
    distributed to  Certificateholders on  the  February 25  Distribution  Date.
    Principal  prepayments  in  full,  liquidation  proceeds  and  proceeds with
    respect to the repurchase or purchase of any of the Mortgage Loans, in  each
    case received during this period, and partial principal prepayments received
    on  or after February 17,  will be deposited in  the Certificate Account but
    will  not  be   distributed  to  Certificateholders   on  the  February   25
    Distribution Date. Instead, such amounts will be credited to the Certificate
    Account  for distribution to Certificateholders on the March 25 Distribution
    Date.
 
(E) As of the close of business on February 17, the Servicer will determine  the
    amounts of Periodic Advances and the amounts of principal and interest which
    will be distributed to the Certificateholders,
 
                                         (FOOTNOTES CONTINUED ON FOLLOWING PAGE)
 
                                       30
<PAGE>
    Succeeding  monthly periods  follow the pattern  of (B)  through (F), except
that the period in (B) begins on the first of the month.
 
DISTRIBUTIONS TO MULTI-CLASS CERTIFICATEHOLDERS
 
    The following description of distributions to Multi-Class Certificateholders
is one  example of  how such  distributions may  be determined.  The  Prospectus
Supplement   for  a  Series  may  provide   for  a  different  manner  in  which
distributions to  Multi-Class Certificateholders  will  be determined  for  such
Series  so long as such Multi-Class Certificates  are rated upon issuance in one
of the two highest rating categories by at least one Rating Agency.
 
    Except as  otherwise  set forth  in  the applicable  Prospectus  Supplement,
distributions of interest and distributions in reduction of the Stated Amount of
Multi-Class  Certificates will  be made  from the  Pool Distribution  Amount (as
determined by the Servicer on the related Determination Date in the same  manner
as  described above with  respect to Series of  Percentage Certificates) on each
Distribution Date for such Series to the holders of each Class then entitled  to
receive such distributions until the aggregate amount of such distributions have
reduced  the  Stated  Amount  of  each  such  Class  of  Certificates  to  zero.
Distributions in reduction of Stated Amount will be allocated among the  Classes
of  such  Certificates  in the  manner  specified in  the  applicable Prospectus
Supplement. Unless otherwise specified in the applicable Prospectus  Supplement,
all  distributions in reduction of  the Stated Amount of  a Class of Multi-Class
Certificates will be made pro rata among the Certificates of such Class.
 
    Unless otherwise specified in the Prospectus Supplement relating to a Series
of Certificates, the aggregate amount that  will be distributed in reduction  of
Stated  Amount to holders of Multi-Class  Certificates of a Series then entitled
thereto on any Distribution Date for such Series will equal, to the extent funds
are available, the sum  of (i) the  Multi-Class Certificate Distribution  Amount
(as  defined herein)  and (ii)  if and  to the  extent specified  in the related
Prospectus Supplement, the applicable percentage of the Spread specified in such
Prospectus Supplement.
 
    Unless otherwise  specified in  the  applicable Prospectus  Supplement,  the
"Multi-Class  Certificate Distribution  Amount" with  respect to  a Distribution
Date for a Series of Multi-Class Certificates will equal the amount, if any,  by
which  the Stated Amount  of the Multi-Class Certificates  of such Series (after
taking into account the amount of interest  to be added to the Stated Amount  of
any Class of Compound Interest
 
- --------------------------------------------------------------------------------
(FOOTNOTES CONTINUED FROM PRECEDING PAGE)
    including  scheduled payments  due on or  before February 1  which have been
    received on or before February 17, partial principal prepayments received by
    the Servicer in reduction  of the unpaid principal  balance of any  Mortgage
    Loan  prior to  February 17 and  principal prepayments  in full, liquidation
    proceeds, and proceeds with respect to the repurchase or purchase of any  of
    the  Mortgage Loans,  received during  the period  commencing January  2 and
    ending  on  January  31.   With  respect  to   each  Series  of   Percentage
    Certificates,  other than Shifting Interest  Certificates, the Servicer will
    calculate the Distributable Amount  and the Pro Rata  Share for each  Class,
    and  the amount otherwise distributable  to the Subordinated Class, together
    with amounts, if any, in the Subordination Reserve Fund, will be  available,
    to   the  extent  of  the  Subordinated   Amount,  to  increase  the  amount
    distributable to  the  Senior  Class  or Classes  up  to  the  Senior  Class
    Shortfall  in  respect  of such  Classes.  With  respect to  each  Series of
    Shifting Interest Certificates, the Servicer will calculate the Senior Class
    Distribution Amount for each Senior Class and will determine the  percentage
    interests  of each  Senior Class to  be used in  connection with calculating
    Senior Class Distribution Amounts with respect to the March 25  Distribution
    Date.  If applicable,  the Servicer  will calculate  the amounts  payable in
    respect of any other form of credit enhancement.
 
(F) Unless  otherwise so  specified in  the related  Prospectus Supplement,  the
    Servicer  or the Paying Agent  will make distributions to Certificateholders
    on the 25th day of each month, or if such 25th day is not a business day, on
    the next business day.
 
                                       31
<PAGE>
Certificates  on  such  Distribution  Date  and  before  giving  effect  to  any
distributions  in reduction of Stated Amount  on such Distribution Date) exceeds
the Pool Value (as defined herein) of  the Mortgage Loans included in the  Trust
Estate for such Series as of the end of the period (a "Due Period") specified in
the  related Prospectus Supplement. For  purposes of determining the Multi-Class
Certificate Distribution Amount with respect to a Distribution Date for a Series
of Certificates having one or more Classes of Multi-Class Certificates, the Pool
Value of the Mortgage Loans included  in the Trust Estate for such  Certificates
will  be reduced to take into account  all distributions thereon received by the
Trustee during the applicable Due Period.
 
    Unless otherwise specified in the applicable Prospectus Supplement, "Spread"
with respect to  a Distribution Date  for a Series  of Multi-Class  Certificates
will  be the excess of (a) the sum of (i) all payments of principal and interest
received on the related Mortgage Loans (net of the Fixed Retained Yield, if any,
and the applicable Servicing Fee with respect to such Mortgage Loans) in the Due
Period applicable to such Distribution  Date and, in the  case of the first  Due
Period,  any amount deposited  by the Seller  in the Certificate  Account on the
Closing Date, (ii) income  from reinvestment thereof, if  any, and (iii) to  the
extent  specified in  the applicable Prospectus  Supplement, the  amount of cash
withdrawn from any  reserve fund  or available under  any other  form of  credit
enhancement for such Series, over (b) the sum of (i) all interest distributed on
the  Multi-Class Certificates of such Series on such Distribution Date, (ii) the
Multi-Class Certificate Distribution Amount for such Series with respect to such
Distribution Date, (iii) if applicable to such Series, any Special Distributions
(as described  below) in  reduction  of the  Stated  Amount of  the  Multi-Class
Certificates  of such Series made since the preceding Distribution Date for such
Series (or since the Closing Date in the case of the first Distribution Date for
such Series),  including  any accrued  interest  distributed with  such  Special
Distributions,  (iv) all administrative and other expenses relating to the Trust
Estate payable during  the Due  Period preceding such  Distribution Date,  other
than such expenses which are payable by the Servicer, and any amount required to
be  deposited  into any  reserve fund  from funds  allocable to  the Multi-Class
Certificates in the Certificate Account. Reinvestment income on any reserve fund
will not be included in Spread except to the extent that reinvestment income  is
taken into account in calculating the initial amount required to be deposited in
such reserve fund, if any.
 
  VALUATION OF MORTGAGE LOANS
 
    If   specified  in  the  Prospectus  Supplement  relating  to  a  series  of
Multi-Class Certificates, for purposes of  establishing the principal amount  of
Mortgage  Loans that will  be included in  a Trust Estate  for such Series, each
Mortgage Loan to be included  in such Trust Estate  will be assigned an  initial
"Pool   Value."  Unless   otherwise  specified  in   the  applicable  Prospectus
Supplement, the Pool  Value of  each Mortgage  Loan in  the Trust  Estate for  a
Series  is the Stated  Amount of Multi-Class Certificates  of such Series which,
based upon  certain  assumptions  and  regardless of  any  prepayments  on  such
Mortgage  Loans, can  be supported  by the  scheduled payments  of principal and
interest on  such  Mortgage Loans  (net  of the  Fixed  Retained Yield  on  such
Mortgage  Loans,  if  any,  and the  applicable  Servicing  Fee),  together with
reinvestment earnings thereon, if any, at the Assumed Reinvestment Rate for  the
period  specified in the related Prospectus  Supplement and amounts available to
be withdrawn  (if applicable)  from any  reserve fund  for such  Series, all  as
specified in the applicable Prospectus Supplement. In calculating the Pool Value
of  a Mortgage Loan included  in the Trust Estate,  future distributions on such
Mortgage Loan will be  determined based on scheduled  payments on such  Mortgage
Loan.  Any similar  Mortgage Loans  may be  aggregated into  one or  more groups
(each, a "Pool Value Group"), each of  which will be assigned an aggregate  Pool
Value  calculated  as  if  all  such Mortgage  Loans  in  the  Pool  Value Group
constituted a single  mortgage loan  having the  highest mortgage  rate and  the
longest  maturity of any such mortgage loan for such Pool Value Group. There are
a number of alternative means of determining  the Pool Value of a Mortgage  Loan
or  Pool Value Group,  including determinations based  on the discounted present
value of the remaining scheduled payments of principal and interest thereon  and
determinations  based on  the relationship  between the  Mortgage Interest Rates
borne thereby and  the Interest  Rates of  the Multi-Class  Certificates of  the
related  Series. The  Prospectus Supplement  for each  Series will  describe the
method or methods (and related
 
                                       32
<PAGE>
assumptions) used to determine the Pool Values of the Mortgage Loans or the Pool
Value Groups for  such Series. In  any event, on  each Distribution Date,  after
making  the distributions  in reduction  of Stated  Amount on  such Distribution
Date, the aggregate of the  Pool Values of all Mortgage  Loans and all the  Pool
Value  Groups included in the Trust Estate  for a Series of Certificates will be
at least equal to the aggregate Stated Amount of the Multi-Class Certificates of
such Series.
 
    The "Assumed Reinvestment  Rate" for  a Series  of Multi-Class  Certificates
will  be the  highest rate  permitted by  the Rating  Agency or  Rating Agencies
rating such Series of Multi-Class Certificates or  a rate insured by means of  a
surety  bond, guaranteed investment contract or similar arrangement satisfactory
to such Rating Agency or Rating Agencies. If the Assumed Reinvestment Rate is so
insured, the related  Prospectus Supplement  will set  forth the  terms of  such
arrangement.
 
  SPECIAL DISTRIBUTIONS
 
    To the extent specified in the Prospectus Supplement relating to a Series of
Multi-Class  Certificates which have other  than monthly Distribution Dates, any
such  Classes  having  Stated  Amounts  may  receive  special  distributions  in
reduction of Stated Amount, together with accrued interest on the amount of such
reduction  ("Special Distributions") in any month, other than a month in which a
Distribution Date  occurs, if,  as  a result  of  principal prepayments  on  the
Mortgage  Loans  in the  related Trust  Estate  and/or reinvestment  yields then
available, the  Trustee  determines,  based  on  assumptions  specified  in  the
applicable  Pooling and Servicing Agreement, that the amount of cash anticipated
to be available on the next Distribution Date for such Series to be  distributed
to  the holders of such Multi-Class Certificates may be less than the sum of (i)
the interest scheduled to be distributed to such holders and (ii) the amount  to
be distributed in reduction of Stated Amount of such Multi-Class Certificates on
such  Distribution Date. Any such Special Distributions will be made in the same
priority and manner as distributions in reduction of Stated Amount would be made
on the next Distribution Date.
 
    To the extent specified  in the related Prospectus  Supplement, one or  more
Classes  of Certificates of a Series  of Multi-Class Certificates may be subject
to special distributions in reduction of the Stated Amount thereof at the option
of the  holders of  such  Certificates, or  to  mandatory distributions  by  the
Servicer.  Any such distributions with respect to  a Series will be described in
the applicable Prospectus Supplement and will be on such terms and conditions as
described therein and specified in the Pooling and Servicing Agreement for  such
Series.
 
  LAST SCHEDULED DISTRIBUTION DATE
 
    The  "Last  Scheduled  Distribution  Date"  for  each  Class  of Multi-Class
Certificates of a Series  having a Stated Amount,  to the extent Last  Scheduled
Distribution Dates are specified in the applicable Prospectus Supplement, is the
latest  date on which  (based upon the  assumptions set forth  in the applicable
Prospectus Supplement) the Stated Amount of such Class is expected to be reduced
to zero. Since the rate of distributions  in reduction of Stated Amount of  each
such Class of Multi-Class Certificates will depend upon, among other things, the
rate  of payment (including prepayments) of  the principal of the Mortgage Loans
in the Trust Estate for such Series,  the actual last Distribution Date for  any
such   Class  could  occur   significantly  earlier  than   its  Last  Scheduled
Distribution Date.  To the  extent of  any delays  in receipt  of any  payments,
insurance  proceeds or liquidation  proceeds with respect  to the Mortgage Loans
included in any  Trust Estate,  the last Distribution  Date for  any such  Class
could  occur  later  than its  Last  Scheduled  Distribution Date.  The  rate of
payments  on  the  Mortgage  Loans  in  the  Trust  Estate  for  any  Series  of
Certificates  will depend upon  their particular characteristics,  as well as on
the prevailing level  of interest  rates from time  to time  and other  economic
factors, and no assurance can be given as to the actual prepayment experience of
the Mortgage Loans. See "Prepayment and Yield Considerations" below.
 
                                       33
<PAGE>
                                 CREDIT SUPPORT
 
SUBORDINATION
 
  CERTIFICATES OTHER THAN SHIFTING INTEREST CERTIFICATES
 
    If  so  specified  in the  Prospectus  Supplement  relating to  a  Series of
Certificates, other than a Series of Shifting Interest Certificates, the  rights
of  the holders of a Class of Subordinated Certificates to receive distributions
will be  subordinated  to  the rights  of  the  holders of  a  Class  of  Senior
Certificates,  to  the  extent  of the  Subordinated  Amount  specified  in such
Prospectus Supplement.  The Subordinated  Amount will  be reduced  by an  amount
equal  to Aggregate  Losses and  will be  further reduced  in accordance  with a
schedule described in the applicable Prospectus Supplement. Aggregate Losses  as
defined  in the applicable Pooling and  Servicing Agreement for any given period
will equal the aggregate amount of delinquencies, losses and other  deficiencies
("Payment  Deficiencies") in  the amounts  due to  the Senior Certificateholders
paid or borne by the Subordinated Certificateholders (but excluding any payments
of Senior  Class Shortfall  Accruals or  interest thereon)  during such  period,
whether   such  aggregate  amount  results  by   way  of  withdrawals  from  the
Subordination Reserve Fund (including, prior  to the time that the  Subordinated
Amount  is reduced to zero,  any such withdrawal of  amounts attributable to the
Initial Deposit, if any), reductions in  amounts that would otherwise have  been
distributable  to the Subordinated Certificateholders  on any Distribution Date,
or otherwise;  less  the  aggregate  amount  of  previous  Payment  Deficiencies
recovered  by the  related Trust  Estate during  such period  in respect  of the
Mortgage Loans giving  rise to  such previous  Payment Deficiencies,  including,
without  limitation, such  recoveries resulting  from the  receipt of delinquent
principal or  interest payments,  Liquidation  Proceeds and  insurance  proceeds
(net,  in  each case,  of any  applicable  Fixed Retained  Yield and  any unpaid
Servicing Fee to  which the Servicer  is entitled, foreclosure  costs and  other
servicing costs, expenses and advances relating to such Mortgage Loans).
 
    The   protection   afforded  to   the   Senior  Certificateholders   by  the
subordination feature described above will be effected both by the  preferential
right,  to the extent specified in the applicable Prospectus Supplement, of such
Senior Certificateholders  to  receive  current  distributions  on  the  related
Mortgage  Loans that would otherwise have been distributable to the Subordinated
Certificateholders and (unless otherwise specified in the applicable  Prospectus
Supplement) by the establishment and maintenance of a Subordination Reserve Fund
for  such  Series.  Unless  otherwise  specified  in  the  applicable Prospectus
Supplement, the  Subordination Reserve  Fund will  not be  a part  of the  Trust
Estate.  The Subordination Reserve Fund may  be funded initially with an initial
deposit by the  Seller (the "Initial  Deposit") in  an amount set  forth in  the
applicable   Prospectus  Supplement.  Following  the  initial  issuance  of  the
Certificates of a Series and until the balance of the Subordination Reserve Fund
(without taking into account the amount of the Initial Deposit) first equals  or
exceeds  the  Specified  Subordination Reserve  Fund  Balance set  forth  in the
applicable  Prospectus  Supplement,  and  unless  otherwise  specified  in   the
applicable  Prospectus Supplement, the  Servicer will withhold  all amounts that
would otherwise have been  distributable to the Subordinated  Certificateholders
and  deposit such amounts (less any  portions thereof required to be distributed
to Senior Certificateholders  as described below)  in the Subordination  Reserve
Fund. The time necessary for the Subordination Reserve Fund of a Series to reach
the  applicable  Specified Subordination  Reserve Fund  Balance for  such Series
after the initial issuance  of the Certificates, and  the period for which  such
balance  is maintained,  will be  affected by  the delinquency,  foreclosure and
prepayment experience of  the Mortgage  Loans in  the related  Trust Estate  and
cannot  be accurately  predicted. Unless  otherwise specified  in the applicable
Prospectus Supplement,  after  the  amount in  the  Subordination  Reserve  Fund
(without  taking into account  the amount of  the Initial Deposit)  for a Series
first equals  or exceeds  the applicable  Specified Subordination  Reserve  Fund
Balance, the Servicer will withhold from the Subordinated Certificateholders and
will  deposit in  the Subordination Reserve  Fund such portion  of the principal
payments on  the  Mortgage Loans  otherwise  distributable to  the  Subordinated
Certificateholders  as may  be necessary  to maintain  the Subordination Reserve
Fund (without taking  into account  the amount of  the Initial  Deposit) at  the
Specified Subordination Reserve Fund Balance. The Prospectus Supplement for each
Series  will set  forth the amount  of the Specified  Subordination Reserve Fund
Balance applicable  from time  to time  and the  extent, if  any, to  which  the
Specified Subordination Reserve Fund Balance may be reduced.
 
                                       34
<PAGE>
    In  no event  will the  Specified Subordination  Reserve Fund  Balance for a
Series ever be  required to  exceed the Subordinated  Amount. In  the event  the
Subordination Reserve Fund is depleted before the Subordinated Amount is reduced
to  zero, the  Senior Certificateholders  will continue  to have  a preferential
right, to  the extent  specified  in the  applicable Prospectus  Supplement,  to
receive  current  distributions  of  amounts  that  would  otherwise  have  been
distributable to the Subordinated Certificateholders  to the extent of the  then
Subordinated Amount.
 
    After   the   Subordinated   Amount   is  reduced   to   zero,   the  Senior
Certificateholders  of  a  Series  will,  unless  otherwise  specified  in   the
applicable  Prospectus  Supplement,  nonetheless have  a  preferential  right to
receive payment  of  Senior Class  Shortfall  Accruals and  interest  which  has
accrued thereon from amounts that would otherwise have been distributable to the
Subordinated  Certificateholders. The  Senior Certificateholders  will otherwise
bear their proportionate  share of any  losses realized on  the Trust Estate  in
excess of the Subordinated Amount.
 
    Amounts  held from  time to  time in  the Subordination  Reserve Fund  for a
Series will be  held for the  benefit of the  Senior Certificateholders of  such
Series until withdrawn from the Subordination Reserve Fund as described below.
 
    If  on any  Distribution Date  while the  Subordinated Amount  exceeds zero,
there is a Senior Class Shortfall,  the Senior Class Certificateholders will  be
entitled  to  receive from  current payments  on the  Mortgage Loans  that would
otherwise have been distributable to Subordinated Certificateholders the  amount
of  such Senior Class  Shortfall. If such current  payments are insufficient, an
amount equal  to  the  lesser of:  (i)  the  entire amount  on  deposit  in  the
Subordination  Reserve  Fund  available for  such  purpose; or  (ii)  the amount
necessary to  cover  the Senior  Class  Shortfall  will be  withdrawn  from  the
Subordination  Reserve Fund. Amounts representing investment earnings on amounts
held in the Subordination Reserve Fund will not be available to make payments to
the Senior Certificateholders.  If current  payments on the  Mortgage Loans  and
amounts  available in the Subordination Reserve Fund are insufficient to pay the
entire Senior Class Shortfall, then amounts held in the Certificate Account  for
future   distributions  will   be  distributed   as  necessary   to  the  Senior
Certificateholders.
 
    Amounts withdrawn  from the  Subordination  Reserve Fund  for a  Series  and
deposited  in  the Certificate  Account for  such Series  will be  charged first
against amounts in the Subordination Reserve Fund other than the Initial Deposit
for such Series, and thereafter against such Initial Deposit.
 
    Any amounts in the Subordination Reserve Fund for a Series on a Distribution
Date in excess of the Specified Subordination Reserve Fund Balance on such  date
prior  to the time the  Subordinated Amount for such  Series is reduced to zero,
and any amounts remaining in the Subordination Reserve Fund for such Series upon
termination of  the  trust  created  by the  applicable  Pooling  and  Servicing
Agreement, will be paid, unless otherwise specified in the applicable Prospectus
Supplement,  to the Subordinated Certificateholders of such Series in accordance
with their pro rata ownership thereof, or, in the case of a Series with  respect
to  which an election has  been made to treat the  Trust Estate (or a segregated
pool of assets therein) as a REMIC, first to the Residual Certificateholders (to
the extent of  any portion  of the Initial  Deposit, if  any, and  undistributed
reinvestment  earnings  attributable thereto),  and  second to  the Subordinated
Certificateholders of such  Series, in each  case in accordance  with their  pro
rata   ownership  thereof.  Amounts   permitted  to  be   distributed  from  the
Subordination Reserve Fund for a Series will no longer be subject to any  claims
or rights of the Senior Certificateholders of such Series.
 
    Funds  in the Subordination  Reserve Fund for  a Series will  be invested as
provided in the applicable Pooling and  Servicing Agreement in certain types  of
eligible  investments ("Eligible Investments"). If an  election has been made to
treat the Trust Estate (or a segregated  pool of assets therein) as a REMIC,  no
more  than 30% of  the income or gain  of the Subordination  Reserve Fund in any
taxable year may be  derived from the sale  or other disposition of  investments
held  for less than three months in the Subordination Reserve Fund. The earnings
on  such  investments   will  be   withdrawn  and  paid   to  the   Subordinated
Certificateholders   of  such  Series   or  to  the   holders  of  the  Residual
Certificates, in the event that an election has
 
                                       35
<PAGE>
been made to treat  the Trust Estate  (or a segregated  pool of assets  therein)
with  respect to  such Series  as a REMIC,  in accordance  with their respective
interests. Investment income earned on amounts held in the Subordination Reserve
Fund will not be available for distribution to the Senior Certificateholders  or
otherwise subject to any claims or rights of the Senior Certificateholders.
 
    Eligible  Investments for monies deposited in the Subordination Reserve Fund
will be specified in the applicable Pooling and Servicing Agreement and,  unless
otherwise provided in the applicable Prospectus Supplement, will mature no later
than the next Distribution Date.
 
    Holders  of Subordinated  Certificates of a  Series will not  be required to
refund any amounts which have been  properly distributed to them, regardless  of
whether  there are sufficient  funds to distribute  to Senior Certificateholders
the amounts to which they are later entitled.
 
    If  specified  in  the  Prospectus  Supplement  relating  to  a  Series   of
Certificates,  the Subordination Reserve Fund may  be funded in any other manner
acceptable to the  Rating Agency  and consistent with  an election,  if any,  to
treat  the Trust Estate (or a segregated pool of assets therein) for such Series
as a REMIC, as will be more fully described in such Prospectus Supplement.
 
  SHIFTING INTEREST CERTIFICATES
 
    If specified  in the  applicable Prospectus  Supplement, the  rights of  the
holders  of  the  Subordinated Certificates  of  a Series  of  Shifting Interest
Certificates to receive distributions with respect to the Mortgage Loans in  the
related  Trust Estate will be subordinated to  such rights of the holders of the
Senior Certificates of the same Series to the extent described below, except  as
otherwise  set  forth  in  such  Prospectus  Supplement.  This  subordination is
intended to  enhance the  likelihood of  regular receipt  by holders  of  Senior
Certificates  of the full amount of  scheduled monthly payments of principal and
interest due them and to provide limited protection to the holders of the Senior
Certificates against losses due to mortgagor defaults.
 
    The protection afforded to the holders of Senior Certificates of a Series of
Shifting Interest Certificates by the subordination feature described above will
be effected by the preferential right of  such holders to receive, prior to  any
distribution  being made in respect of  the related Subordinated Certificates on
each Distribution Date, current distributions  on the related Mortgage Loans  of
principal  and interest  due them  on each  Distribution Date  out of  the funds
available for distribution on such date in the related Certificate Account  and,
to  the extent described below,  by the right of  such holders to receive future
distributions on the Mortgage  Loans that would otherwise  have been payable  to
the holders of Subordinated Certificates.
 
    Losses  realized on liquidated Mortgage Loans (other than certain liquidated
Mortgage Loans that are Special Hazard  Mortgage Loans as described below)  will
be  allocated to the holders of Subordinated Certificates through a reduction of
the amount of principal payments on the Mortgage Loans to which such holders are
entitled. Prior to the Cross-Over Date,  holders of Senior Certificates of  each
Class  entitled to  a percentage of  principal payments on  the related Mortgage
Loans will be  entitled to  receive, as part  of their  respective Senior  Class
Distribution  Amounts  payable  on each  Distribution  Date in  respect  of each
Mortgage Loan that  became a  liquidated Mortgage  Loan in  the preceding  month
(subject  to the additional limitation  described below applicable to liquidated
Mortgage Loans that are Special Hazard Mortgage Loans), their respective  shares
of  the  Scheduled  Principal Balance  of  each such  liquidated  Mortgage Loan,
together with interest  accrued at  the applicable Net  Mortgage Interest  Rate,
irrespective of whether net Liquidation Proceeds realized thereon are sufficient
to  cover such amount. For  a description of the  full Senior Class Distribution
Amount  payable  to  holders  of   Senior  Certificates  of  each  Series,   see
"Description of the Certificates--Distributions to Percentage
Certificateholders--Shifting Interest Certificates."
 
    On each Distribution Date occurring on or after the Cross-Over Date, holders
of  Senior  Certificates of  each Class  entitled to  a percentage  of principal
payments will  generally  receive, as  part  of their  respective  Senior  Class
Distribution  Amounts,  only  their  respective shares  of  the  net Liquidation
Proceeds actually  realized in  respect of  the applicable  liquidated  Mortgage
Loans after reimbursement to the Servicer of any
 
                                       36
<PAGE>
previously  unreimbursed Periodic  Advances made  in respect  of such liquidated
Mortgage  Loans.  See   "Description  of   the  Certificates--Distributions   to
Percentage Certificateholders--Shifting Interest Certificates."
 
    In  the event that a  Mortgage Loan becomes a  liquidated Mortgage Loan as a
result of a hazard not insured against under a standard hazard insurance  policy
of  the type described herein (a "Special Hazard Mortgage Loan"), the holders of
Senior Certificates of each Class entitled to a percentage of principal payments
on the related Mortgage  Loans will be  entitled to receive  in respect of  each
Mortgage  Loan  which became  a Special  Hazard Mortgage  Loan in  the preceding
month, as part of their respective Senior Class Distribution Amounts payable  on
each  Distribution  Date prior  to the  Special  Hazard Termination  Date, their
respective shares  of the  Scheduled Principal  Balance of  such Mortgage  Loan,
together  with interest  accrued at the  applicable Net  Mortgage Interest Rate,
rather than  their  respective  shares  of  net  Liquidation  Proceeds  actually
realized.  The Special Hazard Termination Date for a Series of Certificates will
be the  earlier to  occur of  (i) the  date on  which cumulative  net losses  in
respect  of Special Hazard Mortgage Loans  exceed the Special Hazard Loss Amount
specified in the applicable Prospectus  Supplement or (ii) the Cross-Over  Date.
Since  the amount of the Special Hazard Loss Amount for a Series of Certificates
is expected to be  less than the  amount of principal  payments on the  Mortgage
Loans  to which the holders of the  Subordinated Certificates of such Series are
initially entitled (such amount being subject to reduction, as described  above,
as  a result of allocation of losses  on other liquidated Mortgage Loans as well
as Special Hazard Mortgage Loans),  the holders of Subordinated Certificates  of
such  Series will bear the risk of losses in the case of Special Hazard Mortgage
Loans to a lesser extent than they will bear losses on other liquidated Mortgage
Loans. Once the Special Hazard Termination Date has occurred, holders of  Senior
Certificates of each Class entitled to payments of principal will be entitled to
receive,  as part  of their respective  Senior Class  Distribution Amounts, only
their respective shares of net  Liquidation Proceeds realized on Special  Hazard
Mortgage  Loans (less the total amount  of delinquent installments in respect of
each such  Special Hazard  Mortgage Loan  that were  previously the  subject  of
distributions  to  the  holders  of  Senior  Certificates  paid  out  of amounts
otherwise distributable to the holders of the Subordinated Certificates of  such
Series).  The outstanding principal balance of each such Class will, however, be
reduced by such Class's specified percentage of the Scheduled Principal  Balance
of   each  such   Special  Hazard  Mortgage   Loan.  See   "Description  of  the
Certificates--Distributions to Percentage Certificateholders--Shifting  Interest
Certificates."
 
    If  the cumulative net losses  on all Mortgage Loans  in a Trust Estate that
have become Special Hazard Mortgage  Loans in the months  prior to the month  in
which a Distribution Date occurs would exceed the Special Hazard Loss Amount for
a  Series of Certificates, that portion  of the Senior Class Distribution Amount
as of  such Distribution  Date for  each Class  of Senior  Certificates of  such
Series  entitled to a percentage of principal  payments on the Mortgage Loans in
the related Trust  Estate attributable  to Mortgage Loans  which became  Special
Hazard Mortgage Loans in the month preceding the month of such Distribution Date
will  be calculated not on the basis of the Scheduled Principal Balances of such
Special Hazard Mortgage Loans but rather will be computed as an amount equal  to
the  sum of (i) the excess of the Special Hazard Loss Amount over the cumulative
net losses on all  Mortgage Loans that became  Special Hazard Mortgage Loans  in
the  months prior to the month of such  Distribution Date and (ii) the excess of
(a) the product of the percentage of  principal payments to which such Class  is
entitled  multiplied by the  aggregate net Liquidation  Proceeds of the Mortgage
Loans which became  Special Hazard  Mortgage Loans  in the  month preceding  the
month  of  such  Distribution  Date  over (b)  the  total  amount  of delinquent
installments in  respect  of  such  Special  Hazard  Mortgage  Loans  that  were
previously  the  subject of  distributions  to such  Class  paid out  of amounts
otherwise distributable to the holders of the related Subordinated Certificates.
 
    Although the subordination  feature described above  is intended to  enhance
the  likelihood of timely  payment of principal  and interest to  the holders of
Senior Certificates,  shortfalls  could  result in  certain  circumstances.  For
example,  a shortfall in the  payment of principal otherwise  due the holders of
Senior Certificates could occur  if losses realized on  the Mortgage Loans in  a
Trust Estate were exceptionally high
 
                                       37
<PAGE>
and   were  concentrated  in  a  particular   month.  See  "Description  of  the
Certificates--Distributions to Percentage Certificateholders--Shifting  Interest
Certificates"  for  a  description  of  the  consequences  of  any  shortfall of
principal or interest.
 
    The holders of Subordinated Certificates will not be required to refund  any
amounts previously properly distributed to them, regardless of whether there are
sufficient  funds on a subsequent Distribution  Date to make a full distribution
to holders of each Class of Senior Certificates of the same Series.
 
OTHER CREDIT ENHANCEMENT
 
    In addition to subordination as  discussed above, credit enhancement may  be
provided  with respect to any  Series of Certificates in  any other manner which
may be described  in the  applicable Prospectus Supplement,  including, but  not
limited  to,  credit enhancement  through an  alternative form  of subordination
and/or one or more of the methods described below.
 
  LIMITED GUARANTEE
 
    If so specified  in the Prospectus  Supplement with respect  to a Series  of
Certificates,  credit  enhancement may  be  provided in  the  form of  a limited
guarantee issued by a guarantor named therein.
 
  LETTER OF CREDIT
 
    Alternative credit support with respect to  a Series of Certificates may  be
provided  by  the  issuance of  a  letter of  credit  by the  bank  or financial
institution specified  in the  applicable Prospectus  Supplement. The  coverage,
amount and frequency of any reduction in coverage provided by a letter of credit
issued  with  respect to  a  Series of  Certificates will  be  set forth  in the
Prospectus Supplement relating to such Series.
 
  POOL INSURANCE POLICIES
 
    If so  specified  in the  Prospectus  Supplement  relating to  a  Series  of
Certificates,  the Seller will  obtain a pool insurance  policy for the Mortgage
Loans in the related Trust Estate. The pool insurance policy will cover any loss
(subject to the  limitations described  in a related  Prospectus Supplement)  by
reason  of default to the  extent a related Mortgage Loan  is not covered by any
primary mortgage insurance policy.  The amount and principal  terms of any  such
coverage will be set forth in the Prospectus Supplement.
 
  SPECIAL HAZARD INSURANCE POLICIES
 
    If  so specified in the applicable Prospectus Supplement, for each Series of
Certificates as to which  a pool insurance policy  is provided, the Seller  will
also  obtain a special hazard  insurance policy for the  related Trust Estate in
the amount set forth in such Prospectus Supplement. The special hazard insurance
policy will, subject to the  limitations described in the applicable  Prospectus
Supplement,  protect against  loss by reason  of damage  to Mortgaged Properties
caused by certain hazards not insured against under the standard form of  hazard
insurance policy for the respective states in which the Mortgaged Properties are
located.  The amount and principal terms of  any such coverage will be set forth
in the Prospectus Supplement.
 
  MORTGAGOR BANKRUPTCY BOND
 
    If so specified  in the applicable  Prospectus Supplement, losses  resulting
from  a bankruptcy  proceeding relating  to a  mortgagor affecting  the Mortgage
Loans in a Trust Estate with respect to a Series of Certificates will be covered
under a mortgagor bankruptcy bond (or any other instrument that will not  result
in  a downgrading of  the rating of the  Certificates of a  Series by the Rating
Agency or Rating Agencies that rated such Series). Any mortgagor bankruptcy bond
or such other  instrument will  provide for coverage  in an  amount meeting  the
criteria  of the Rating Agency or Rating Agencies rating the Certificates of the
related Series,  which  amount will  be  set  forth in  the  related  Prospectus
Supplement.  The amount  and principal  terms of any  such coverage  will be set
forth in the Prospectus Supplement.
 
                                       38
<PAGE>
                      PREPAYMENT AND YIELD CONSIDERATIONS
 
PASS-THROUGH RATES AND INTEREST RATES
 
    Any Class of Certificates of a Series may have a fixed Pass-Through Rate  or
Interest  Rate, or a  Pass-Through Rate or  Interest Rate which  varies based on
changes in an index or based on changes with respect to the underlying  Mortgage
Loans  (such as, for  example, varying on  the basis of  changes in the weighted
average Net Mortgage Interest Rate of the underlying Mortgage Loans).
 
    The Prospectus Supplement  for each Series  will specify the  range and  the
weighted average of the Mortgage Interest Rates and, if applicable, Net Mortgage
Interest  Rates for the Mortgage Loans underlying  such Series as of the Cut-Off
Date. If the Trust  Estate includes adjustable-rate  Mortgage Loans or  includes
Mortgage  Loans with different Net Mortgage Interest Rates, the weighted average
Net Mortgage Interest Rate may  vary from time to time  as set forth below.  See
"The  Trust Estates." The  Prospectus Supplement for a  Series will also specify
the initial weighted average Pass-Through Rate  or Interest Rate for each  Class
of  Certificates of such Series and  will specify whether each such Pass-Through
Rate or Interest Rate is fixed or is variable.
 
    The Net Mortgage Interest  Rate for any adjustable  rate Mortgage Loan  will
change  with  any  changes in  the  index  specified in  the  related Prospectus
Supplement on which such Mortgage  Interest Rate adjustments are based,  subject
to  any applicable periodic or aggregate caps  or floors on the related Mortgage
Interest Rate. The weighted average Net  Mortgage Interest Rate with respect  to
any  Series  may vary  due  to changes  in the  Net  Mortgage Interest  Rates of
adjustable rate Mortgage  Loans, to  the timing  of the  Mortgage Interest  Rate
readjustments  of  such Mortgage  Loans  and to  different  rates of  payment of
principal of fixed or adjustable rate Mortgage Loans bearing different  Mortgage
Interest Rates. See "Prepayment and Yield Considerations."
 
SCHEDULED DELAYS IN DISTRIBUTIONS
 
    At  the date of initial issuance of  the Certificates of each Series offered
hereby, the initial purchasers  of a Class of  Certificates (other than  certain
Classes  of Residual Certificates)  will be required to  pay accrued interest at
the applicable  Pass-Through Rate  or  Interest Rate  for  such Class  from  the
Cut-Off  Date for such Series to, but  not including, the date of issuance. With
respect to Standard Certificates or  Stripped Certificates, the effective  yield
to  Certificateholders  will  be  below  the  yield  otherwise  produced  by the
applicable Pass-Through Rate because the distribution of principal and  interest
which  is due on each Due  Date will not be made until  the 25th day (or if such
25th day is not a business day, the business day immediately following such 25th
day) of  the  month  in  which  such  Due  Date  occurs  (or  until  such  other
Distribution  Date specified  in the  applicable Prospectus  Supplement). To the
extent set forth in the related Prospectus Supplement, Multi-Class  Certificates
may provide for distributions of interest accrued during periods ending prior to
the  related Distribution Date. In any such  event, the nature of such scheduled
delays in  distribution  and  the  impact  on  the  yield  of  such  Multi-Class
Certificates will be set forth in the related Prospectus Supplement.
 
EFFECT OF PRINCIPAL PREPAYMENTS
 
    When  a Mortgage Loan is prepaid in full, the mortgagor pays interest on the
amount prepaid only to  the date of prepayment  and not thereafter.  Liquidation
Proceeds  (as defined  herein) and amounts  received in  settlement of insurance
claims are  also likely  to include  interest only  to the  time of  payment  or
settlement.  When a Mortgage Loan is prepaid  in part, an interest shortfall may
result depending on the timing of the receipt of the partial prepayment and  the
timing  of when those  prepayments are passed  through to Certificateholders. To
partially mitigate this reduction in yield, the Pooling and Servicing  Agreement
relating  to a Series will provide, unless otherwise specified in the applicable
Prospectus Supplement, that with respect to any principal prepayment in full  of
any  Mortgage Loan underlying the Certificates of such Series, the Servicer will
pay into  the  Certificate Account  for  such Series  to  the extent  funds  are
available for such purpose from the aggregate Servicing Fees (or portion thereof
as  specified  in  the  related Prospectus  Supplement)  which  the  Servicer is
entitled  to  receive  relating  to  mortgagor  payments  or  other   recoveries
 
                                       39
<PAGE>
distributed  to Certificateholders on the related Distribution Date, the amount,
if any, of interest at the Net Mortgage Interest Rate for such Mortgage Loan for
the period from the date of such prepayment in full to and including the end  of
the month in which such prepayment in full occurs. Unless otherwise specified in
the applicable Prospectus Supplement, no comparable offset against the Servicing
Fee  will be provided with respect to partial prepayments or liquidations of any
Mortgage Loans and any  interest shortfall arising  from partial prepayments  or
from  liquidations either will be  covered by means of  the subordination of the
rights  of  Subordinated   Certificateholders  or  any   other  credit   support
arrangements.  See "Servicing of the Mortgage Loans--Adjustment to Servicing Fee
in Connection with Prepaid Mortgage Loans."
 
    A lower  rate of  principal prepayments  than anticipated  would  negatively
affect  the total return to  investors in any Certificates  of a Series that are
offered at a discount to their principal  amount and a higher rate of  principal
prepayments  than  anticipated  would  negatively  affect  the  total  return to
investors in the Certificates of a Series that are offered at a premium to their
principal amount.  The  yield  on  Stripped  Certificates  may  be  particularly
sensitive  to prepayment rates, and further information with respect to yield on
such Stripped  Certificates  will  be  included  in  the  applicable  Prospectus
Supplement.
 
WEIGHTED AVERAGE LIFE OF CERTIFICATES
 
    The  Mortgage Loans may  be prepaid in full  or in part  at any time. Unless
otherwise specified in  the applicable Prospectus  Supplement, no Mortgage  Loan
will  provide  for  a  prepayment penalty.  Unless  otherwise  specified  in the
applicable Prospectus Supplement,  all fixed  rate Mortgage  Loans will  contain
due-on-sale clauses permitting the mortgagee to accelerate the maturities of the
Mortgage  Loans upon  conveyance of  the related  Mortgaged Properties,  and all
adjustable-rate Mortgage Loans will permit creditworthy borrowers to assume  the
then-outstanding indebtedness on the Mortgage Loans.
 
    Prepayments on Mortgage Loans are commonly measured relative to a prepayment
standard  or  model.  The  Prospectus Supplement  for  each  Series  of Stripped
Certificates may, and the Prospectus  Supplement for each Series of  Multi-Class
Certificates  will, describe one or more such prepayment standards or models and
contain tables setting forth the projected  yields to maturity on each Class  or
Subclass  of Certificates of a Series  of Stripped Certificates or, with respect
to a Series of Multi-Class Certificates, the weighted average life of each Class
and the percentage of  the original aggregate Stated  Amount of each Class  that
would  be outstanding on  specified Distribution Dates for  such Series based on
the assumptions stated in such Prospectus Supplement, including assumptions that
prepayments on the  Mortgage Loans are  made at rates  corresponding to  various
percentages  of  the  prepayment  standard or  model  specified  in  the related
Prospectus Supplement.
 
    There is no  assurance that prepayment  of the Mortgage  Loans underlying  a
Series  of Certificates will conform to any  level of the prepayment standard or
model specified  in the  related  Prospectus Supplement.  A number  of  factors,
including  homeowner  mobility,  economic  conditions,  changes  in  mortgagors'
housing needs, job transfers, unemployment or, in the case of borrowers  relying
on  commission income  and self-employed borrowers,  significant fluctuations in
income or adverse economic conditions, mortgagors' net equity in the  properties
securing  the  mortgages,  servicing  decisions,  enforceability  of due-on-sale
clauses, mortgage  market  interest rates,  mortgage  recording taxes,  and  the
availability  of mortgage funds,  may affect prepayment  experience. In general,
however, if  prevailing interest  rates fall  significantly below  the  Mortgage
Interest  Rates on the  Mortgage Loans underlying a  Series of Certificates, the
prepayment rates  of  such  Mortgage Loans  are  likely  to be  higher  than  if
prevailing  rates remain at or above the  rates borne by such Mortgage Loans. It
should be noted  that Certificates of  a Series  may evidence an  interest in  a
Trust Estate with different Mortgage Interest Rates. Accordingly, the prepayment
experience  of such Certificates will to some extent be a function of the mix of
interest rates of the Mortgage Loans. In addition, the terms of the Pooling  and
Servicing  Agreement will require the Servicer to enforce any due-on-sale clause
to the extent it has knowledge of  the conveyance or the proposed conveyance  of
the  underlying  Mortgaged  Property; provided,  however,  that  any enforcement
action that the Servicer in  good faith determines may  be restricted by law  or
that would impair or threaten to impair any recovery under any related insurance
policy will not be
 
                                       40
<PAGE>
required  and provided, further, that the  Servicer may permit the assumption of
defaulted Mortgage Loans. See "Servicing  of the Mortgage Loans--Enforcement  of
Due-on-Sale  Clauses; Realization  Upon Defaulted  Mortgage Loans"  and "Certain
Legal Aspects of the Mortgage Loans--'Due-On-Sale' Clauses" for a description of
certain provisions of  each Pooling  and Servicing Agreement  and certain  legal
developments that may affect the prepayment experience on the Mortgage Loans.
 
    At the request of the mortgagor, the Servicer may allow the refinancing of a
Mortgage  Loan  in  any  Trust  Estate  by  accepting  prepayments  thereon  and
permitting a new  loan secured by  a Mortgage  on the same  property. Upon  such
refinancing,  the new loan will not be included in the Trust Estate. A mortgagor
may be legally entitled to require the Servicer to allow such a refinancing. Any
such refinancing  will have  the same  effect as  a prepayment  in full  of  the
related  Mortgage Loan. In  this regard PHMC  may, from time  to time, implement
programs designed  to  encourage refinancing  through  PHMC, including  but  not
limited  to general or  targeted solicitations, or  the offering of pre-approved
applications, reduced  origination fees  or closing  costs, or  other  financial
incentives.  The Servicer may  also encourage refinancing  of defaulted Mortgage
Loans, including  Mortgage Loans  that would  permit creditworthy  borrowers  to
assume the outstanding indebtedness.
 
    The  Seller will  be obligated,  under certain  circumstances, to repurchase
certain of  the Mortgage  Loans. In  addition, if  specified in  the  applicable
Prospectus  Supplement, the Pooling and Servicing Agreement will permit, but not
require, the Seller, and the terms of certain insurance policies relating to the
Mortgage Loans may  permit the  applicable insurer, to  purchase any  delinquent
Mortgage Loan. The proceeds of any such purchase or repurchase will be deposited
in the related Certificate Account and such purchase or repurchase will have the
same effect as a prepayment in full of the related Mortgage Loan. See "The Trust
Estates--Mortgage  Loans--Assignment  of  the  Mortgage  Loans  to  the Trustee"
and"--Optional Repurchases."  In addition,  if so  specified in  the  applicable
Prospectus  Supplement, the Servicer  will have the option  to purchase all, but
not less than all, of the Mortgage  Loans in any Trust Estate under the  limited
conditions   specified  in  such  Prospectus   Supplement.  For  any  Series  of
Certificates for which an election has been made to treat the Trust Estate (or a
segregated pool of assets therein) as  a REMIC, any such purchase or  repurchase
may  be effected only pursuant to a  "qualified liquidation," as defined in Code
Section 860F(a)(4)(A). See  "The Pooling  and Servicing  Agreement--Termination;
Purchase of Mortgage Loans."
 
                                   THE SELLER
 
    The  Prudential  Home Mortgage  Securities Company,  Inc. (the  "Seller"), a
direct, wholly-owned subsidiary  of The Prudential  Home Mortgage Company,  Inc.
("PHMC")  and  an  indirect,  wholly-owned  subsidiary  of  Residential Services
Corporation of America and The Prudential Insurance Company of America, a mutual
insurance  company  organized  under  the  laws  of  the  State  of  New  Jersey
("Prudential  Insurance"), is the  successor in interest  to The Prudential Home
Mortgage Securities  Company,  a  limited  purpose  general  partnership  formed
pursuant  to the Partnership Law  of the State of New  York on December 30, 1987
("PHMSCo."). The Seller was incorporated in the State of Delaware on August  21,
1985  under the name Dryden Guaranty Corporation, but did not actively engage in
business prior  to December  28, 1988.  On  July 18,  1988, the  Certificate  of
Incorporation  of the Seller was amended to, among other things, change the name
of Dryden  Guaranty  Corporation  to The  Prudential  Home  Mortgage  Securities
Company,  Inc. and  to limit the  purposes for  which the Seller  exists and, on
December 28, 1988, the Seller acquired all of the assets and assumed all of  the
liabilities of PHMSCo., including but not limited to all of PHMSCo.'s rights and
obligations  under the  Pooling and Servicing  Agreements relating  to series of
mortgage pass-through certificates previously sold by it.
 
    The limited purposes of the Seller are, in general, to acquire, own and sell
mortgage loans;  to issue,  acquire, own,  hold and  sell mortgage  pass-through
securities  which represent  ownership interests in  mortgage loans, collections
thereon and related properties; and to  engage in any acts which are  incidental
to, or necessary, suitable or convenient to accomplish, the foregoing.
 
                                       41
<PAGE>
    The  Seller  maintains  its principal  office  at 7470  New  Technology Way,
Frederick, Maryland 21701. Its telephone number is (301) 846-8199.
 
    At the time of  the formation of  any Trust Estate, the  Seller will be  the
sole  owner of all the related Mortgage Loans. The Seller will have acquired the
Mortgage Loans included in any Trust Estate from PHMC or another affiliate.  The
Seller's  only obligation with respect to the Certificates of any Series will be
to repurchase or substitute for Mortgage Loans in a Trust Estate in the event of
defective documentation  or  upon the  failure  of certain  representations  and
warranties  made by the Seller. See  "The Trust Estates-- Assignment of Mortgage
Loans to the Trustee."
 
                                      PHMC
 
GENERAL
 
    PHMC is the successor in interest to The Prudential Home Mortgage Company, a
joint venture  which was  formed under  the laws  of the  State of  New York  on
November 7, 1984 ("PHMCo."). Immediately prior to November 1987, the partners of
PHMCo.,  each  of which  owned a  50% interest  in the  joint venture,  were The
Prudential Mortgage  Capital Company,  Inc.,  a New  Jersey corporation  and  an
indirect,  wholly  owned  subsidiary  of Prudential  Insurance  ("PMCC")  and TR
Venture Corporation ("TRVC"), a Delaware corporation indirectly, wholly owned by
Salomon Inc and affiliated with Salomon Brothers Inc. During November 1987, PMCC
transferred a 0.1% interest in PHMCo. to its affiliate, PIC Realty  Corporation,
and,  immediately thereafter, the interest  of TRVC in PHMCo.  was retired. As a
consequence thereof,  PHMCo.  became  indirectly,  wholly  owned  by  Prudential
Insurance, which, in turn, also indirectly, wholly owns the Seller.
 
    PHMC was incorporated in the State of New Jersey on September 18, 1978 under
the  name Newark Rehabilitation,  Inc., but did not  actively engage in business
prior to October 31, 1988. On March 3, 1988, Newark Rehabilitation, Inc. changed
its name to  The Prudential  Home Mortgage Company,  Inc., and,  on October  31,
1988,  PHMC acquired  all of the  assets and  assumed all of  the liabilities of
PHMCo. As used herein and in each Prospectus Supplement, references to PHMC that
relate to activities  occurring prior  to October 31,  1988 are  to PHMCo.  From
October  31,  1988  to  December  19, 1989,  PHMC  was  a  direct,  wholly owned
subsidiary of PMCC. On December  19, 1989, all of the  common stock of PHMC  was
transferred   to,  and  PHMC  became  a  direct,  wholly  owned  subsidiary  of,
Residential Services Corporation of America,  a direct, wholly owned  subsidiary
of Prudential Insurance.
 
    PHMC  is engaged principally in the  business of originating and purchasing,
for its own account and for the account of its affiliates, residential  mortgage
loans  secured by one- to four-family homes located throughout the United States
and made in order to purchase those homes or to refinance prior loans secured by
such homes. PHMC  also processes  loans for other  originators. See  "--Mortgage
Origination Processing" below. The executive offices of PHMC are located at 8000
Maryland  Avenue, Suite 1400, Clayton, Missouri  63105, and its telephone number
is (314) 726-3900.
 
    PHMC is  an affiliate  of  Lender's Service,  Inc., a  Delaware  corporation
("LSI"),  formerly known as Lender's Service Acquisition Corporation, which is a
wholly owned subsidiary of  Residential Services Corporation  of America and  an
indirect  wholly  owned subsidiary  of Prudential  Insurance,  and which  is the
successor in interest to Lender's Service, Inc., a Pennsylvania corporation. LSI
maintains  a  relationship  with  a  nationwide  network  of  appraisers;  these
appraisers  perform work for LSI on an independent-contractor basis. Appraisals,
review appraisals  and recertifications  obtained  in connection  with  mortgage
loans  originated  or  acquired  by  PHMC  may  be  obtained  through  LSI.  See
"--Mortgage Loan Underwriting"  below. LSI  may also  act as  a title  insurance
agent  for various title insurance companies, and  as a vendor of credit reports
for UCB  Services,  a  national  mortgage reporting  company,  with  respect  to
mortgage  loans,  including the  Mortgage Loans.  PHMC is  also an  affiliate of
Prudential Property and  Casualty Insurance  Company, a  wholly owned,  indirect
subsidiary   of  Prudential  Insurance,  which  offers  casualty  insurance  for
residential properties, which may include  the Mortgaged Properties. PHMC is  an
affiliate  of The Prudential Bank  and Trust Company, a  Georgia bank, for which
PHMC   processes    applications   for    home   equity    loans   secured    by
 
                                       42
<PAGE>
residential properties, which may include the Mortgaged Properties. PHMC is also
an affiliate of The Prudential Real Estate Affiliates, Inc., which may, directly
or through real estate brokers, refer loan originations to PHMC. PHMC is also an
affiliate  of The Prudential Savings Bank, a savings and loan association, which
may offer services  to the mortgagors  of the  Mortgage Loans. PHMC  is also  an
affiliate  of  Prudential  Residential  Services  Limited  Partnership  and  The
Prudential Real  Estate Affiliates,  Inc. (collectively,  "PRR"). PRR  primarily
offers  relocation  services to  corporate  employees and  residential brokerage
services to the public. PRR may, directly or through real estate brokers,  refer
loan  originations  to PHMC.  PHMC is  also an  affiliate of  a number  of other
insurance providers (including providers of life, health, disability, automobile
and personal catastrophe insurance) and financial services providers  (including
providers  of annuities,  mutual funds, retirement  accounts, financial planning
services,  credit  cards,  securities   and  commodities  brokerage  and   asset
management),  all of which may offer services  to the mortgagors of the Mortgage
Loans.
 
    PHMC conducts its  mortgage loan processing  through centralized  production
offices  located in Costa Mesa, California, Frederick, Maryland and Minneapolis,
Minnesota. At  these locations,  PHMC receives  applications for  home  mortgage
loans  on toll-free telephone  numbers that can  be called from  anywhere in the
United  States.  In  addition,  PHMC   maintains  marketing  offices  in   major
metropolitan centers in the United States. While the manner in which it conducts
its business does not generally entail face-to-face interactions with borrowers,
PHMC  has varying  degrees of direct  contact with borrowers  under the mortgage
origination and acquisition programs  described below. Since  PHMC takes a  more
active  role in loan  processing in connection with  those programs that involve
the referral of applicants, rather than the purchase of completed loan packages,
borrower contact  tends  to  be  more  frequent  where  PHMC  functions  as  the
originator of the mortgage loans.
 
    On  May 31, 1991, PHMC acquired certain  assets and operations of A Mortgage
Company, formerly America's  Mortgage Company ("AMC"),  located in  Springfield,
Illinois.  AMC's business consisted primarily of the origination and acquisition
of mortgage loans insured  or guaranteed by  the Federal Housing  Administration
and  the  United States  Department of  Veterans  Affairs ("FHA/VA  loans"), the
issuance and sale of securities  guaranteed by the Government National  Mortgage
Association ("GNMA"), which securities were backed by pools of FHA/VA loans, and
the  servicing of such mortgage loans.  These activities are now being conducted
by PHMC  from the  Springfield,  Illinois location.  The description  of  PHMC's
activities  elsewhere in this  Prospectus relate to  conventional rather than to
FHA/VA loans, since the Mortgage  Loans to be included  in the Trust Estate  for
any Series of Certificates will be comprised exclusively of conventional loans.
 
MORTGAGE LOAN PRODUCTION SOURCES
 
    Unless  otherwise specified in the  applicable Prospectus Supplement, PHMC's
primary sources  of mortgage  loans  are (i)  selected corporate  clients,  (ii)
mortgage  brokers and similar  entities, and (iii)  other originators. The first
two categories involve  the origination of  mortgage loans by  PHMC through  the
referral  of applicants  to PHMC by  the respective sources;  the third category
involves the acquisition by PHMC of qualifying mortgage loans presented to  PHMC
by  such third parties.  The relative contribution  of each of  these sources to
PHMC's business, measured by the volume  of loans generated, tends to  fluctuate
over time.
 
    Mortgage  loans generated  through contacts  with corporate  clients or with
mortgage brokers and similar entities typically  involve the referral of a  loan
applicant  to  PHMC;  the  gathering  of  credit-related  and  property-specific
information by PHMC; and  the decision by  PHMC, based on  its analysis of  such
information,  as to the suitability of its making the loan. It is characteristic
of PHMC's practice with respect to loans generated as a result of referrals from
these two sources  that PHMC,  itself, orders appraisals  (most frequently,  the
original  appraisals, but in some cases,  review appraisals) and credit reports.
The level of involvement  by PHMC in  other aspects of  the processing of  these
loans varies considerably; whereas, PHMC typically assists the borrower referred
by corporate clients through the application stage, PHMC
 
                                       43
<PAGE>
tends  to  have  limited contact  with  those borrowers  whose  applications are
processed on PHMC's behalf by certain  mortgage brokers or similar entities,  as
discussed below. Taken as a whole, however, PHMC's processing role in connection
with  loans generated either as a result  of referrals from corporate clients or
from mortgage brokers and  similar entities generally  exceeds the more  limited
processing  role  associated with  loans acquired  from PHMC's  third production
source, other  originators.  It is  PHMC's  practice  to review  the  loan  file
submitted  to  it by  the other  originator;  order a  new credit  report; under
certain limited circumstances, order  a review appraisal; and,  on the basis  of
its  analysis of both  the data that  it has received  and the data  that it has
gathered, determine  whether  to  accept  or reject  the  loan.  For  each  loan
purchased  by PHMC, the seller, or the other originator that previously sold the
loan to PHMC's seller, will have taken the borrower's loan application, obtained
the initial  credit reports,  ordered the  original appraisal  and provided  all
necessary  documentation  and disclosure  relating  to compliance  with federal,
state or local law applicable to mortgage loan origination and servicing.
 
    A majority of PHMC's corporate clients are companies that sponsor relocation
programs for their employees and in connection with which PHMC provides mortgage
financing. Eligibility  for  a relocation  loan  is  based, in  general,  on  an
employer's   providing  financial  assistance  to  the  relocating  employee  in
connection with a job-required  move. Although all  Subsidy Loans are  generated
through  such  corporate-sponsored  programs,  the  assistance  extended  by the
employer need  not  necessarily  take the  form  of  a loan  subsidy.  (Not  all
relocation  loans are  generated by  PHMC through  referrals from  its corporate
clients: some  relocation loans  are generated  as a  result of  referrals  from
mortgage  brokers  and similar  entities;  others are  generated  through PHMC's
acquisition of  mortgage  loans  from  other  originators.)  Also  among  PHMC's
corporate  clients are various professional associations. These associations, as
well as the other corporate clients,  promote the availability of a broad  range
of  PHMC mortgage  products to their  members or  employees, including refinance
loans, second-home loans and investment-property loans.
 
    Mortgage brokers, realtors (including  affiliates of Prudential  Insurance),
mortgage  bankers, commercial bankers, developers,  and builders also refer loan
applicants to PHMC.  Although the extent  to which mortgage  brokers or  similar
entities  will assist borrowers in  the application process varies considerably,
PHMC's role in the processing of  loans originated under this program  typically
involves the ordering of credit reports, as well as the ordering of the property
appraisal.  PHMC  may,  however,  permit certain  mortgage  brokers  and similar
entities to make  an initial determination  as to compliance  of mortgage  loans
with  PHMC's underwriting  guidelines. Under such  circumstances, the applicable
third parties take the loan  applications, obtain the borrowers' credit  reports
and  order  the property  appraisals from  qualified  appraisers. In  advance of
reaching a financing decision  with respect to such  loans, PHMC will  typically
order both review appraisals and additional credit reports.
 
    In  order  to qualify  for participation  in  PHMC's mortgage  loan purchase
programs, lending institutions must (i) meet and maintain certain net worth  and
other   financial   standards,  (ii)   demonstrate  experience   in  originating
residential  mortgage  loans,  (iii)  meet  and  maintain  certain   operational
standards,  (iv) evaluate each loan offered  to PHMC for consistency with PHMC's
underwriting guidelines and  (v) utilize the  services of qualified  appraisers.
The   contractual  arrangements  with  eligible   originators  may  involve  the
commitment by PHMC  to accept delivery  of a certain  dollar amount of  mortgage
loans over a period of time; this commitment may be satisfied either by delivery
of  mortgage loans  one at  a time or  in multiples  as aggregated  by the other
originator. In all instances, however, acceptance by PHMC is contingent upon the
loans being found  to satisfy PHMC's  program standards. PHMC  may also  acquire
portfolios of seasoned loans in negotiated transactions.
 
MORTGAGE LOAN UNDERWRITING
 
    In  determining  whether to  lend to  a particular  mortgage borrower  or to
purchase a mortgage loan, PHMC makes an assessment of the applicant's ability to
repay the loan, as well as an assessment  of the value of the property to  which
the  financing relates. The underwriting  standards that guide the determination
represent a balancing of several factors  that may affect the ultimate  recovery
of the loan amount, including,
 
                                       44
<PAGE>
among  others, the  amount of  the loan,  the ratio  of the  loan amount  to the
property value (i.e., the lower of the appraised value of the mortgaged property
and the purchase  price), the  borrower's means  of support  and the  borrower's
credit  history. PHMC's  guidelines for underwriting  may vary  according to the
nature of the borrower or the type of loan, since differing characteristics  may
be perceived as presenting different levels of risk.
 
    PHMC's  underwriting of  a mortgage  loan may be  based on  data obtained by
parties other than  PHMC that  are involved at  various stages  in the  mortgage
origination or acquisition process. This typically occurs under circumstances in
which  loans are subject to more than  one approval process, as when third-party
lenders, certain mortgage brokers or similar entities that have been approved by
PHMC to process loans on its behalf, or independent contractors hired by PHMC to
perform underwriting  services  on  its behalf  ("contract  underwriters")  make
initial  determinations as  to the consistency  of loans  with PHMC underwriting
guidelines.  In  such   instances,  certain  information   may,  but  need   not
necessarily, be resolicited by PHMC in connection with its approval process. For
example, in connection with a mortgage loan that is presented to PHMC by another
originator  for purchase, PHMC will typically  order a second credit report, but
it will only order  a review appraisal under  certain limited circumstances,  in
advance  of reaching a  purchase decision. However,  in connection with mortgage
loans that are processed on PHMC's behalf by certain mortgage brokers or similar
entities, PHMC will customarily order both  a second credit report and a  review
appraisal.  When contract underwriters  are used, PHMC  will generally not order
any supplemental  documentation but  will review  the information  collected  by
these  providers,  who  are trained  by  PHMC personnel  in  PHMC's underwriting
practices and  are  required to  review  all  loans in  accordance  with  PHMC's
underwriting  guidelines. In  all cases, PHMC  makes the  final determination to
approve or deny the funding or purchase of a particular mortgage loan.
 
    The loan application elicits pertinent information about the applicant, with
particular emphasis on  the applicant's financial  health (assets,  liabilities,
income  and expenses), the property being financed and the type of loan desired.
A self-employed  applicant may  be required  to submit  his or  her most  recent
signed  federal  income tax  returns. With  respect  to every  applicant, credit
reports  are  obtained  from  commercial  reporting  services,  summarizing  the
applicant's  credit history with merchants  and lenders. Significant unfavorable
credit information reported by the applicant  or a credit reporting agency  must
be  explained by the applicant. The type of credit report that PHMC obtains, and
that  it  authorizes   parties  referring   loans  to   it  to   obtain,  is   a
computer-generated  report that  electronically merges  the information gathered
from  the  data  bases  of   two  major  consumer  credit  repositories   (these
repositories produce what are commonly referred to as "in-file" credit reports).
In  connection  with  its underwriting  procedure,  PHMC will,  with  the single
exception of the use of contract  underwriters, itself order a credit report  of
the  type described, whether  or not a  report has previously  been ordered with
respect to an applicant for whom another party has processed or approved of  the
loan. Certain of the credit reports that PHMC obtains may be purchased through a
credit reporting service with which LSI has a contractual relationship.
 
    Verifications  of employment,  income, assets  or mortgages  may be  used to
supplement  the  loan  application   and  the  credit   report  in  reaching   a
determination  as  to  the  applicant's  ability  to  meet  his  or  her monthly
obligations on the proposed mortgage loan, as well as his or her other  mortgage
payments  (if  any),  living  expenses  and  financial  obligations.  A mortgage
verification involves  obtaining information  regarding the  borrower's  payment
history  with  respect to  any existing  mortgage the  applicant may  have. This
verification is  accomplished by  either having  the present  lender complete  a
verification  of mortgage form, evaluating the  information on the credit report
concerning  the  applicant's   payment  history  for   the  existing   mortgage,
communicating,  either  verbally or  in  writing, with  the  applicant's present
lender or analyzing cancelled checks provided by the applicant. Verifications of
income, assets or  mortgages may  be waived  under certain  programs offered  by
PHMC, but PHMC's practice is to obtain verification of employment for every loan
applicant.   Waivers  limit  the   amount  of  documentation   required  for  an
underwriting decision and have the effect of increasing the relative  importance
of  the credit report  and the appraisal.  Such waivers or reduced-documentation
options are, in general, available for owner-occupied properties where the ratio
of
 
                                       45
<PAGE>
the loan amount to the property value does not exceed 80%. The interest rate may
be higher with respect to a loan which has been processed according to a reduced
documentation program  than  a  loan  which has  been  processed  under  a  full
documentation  program. Documentation requirements  vary based upon  a number of
factors, including the purpose of the loan, the amount of the loan and the ratio
of  the   loan   amount  to   the   property  value.   The   least   restrictive
reduced-documentation  programs apply to the applicant for a relocation loan and
to the borrower whose  loan amount does not  exceed $600,000 and whose  Loan-to-
Value  Ratio  is not  in  excess of  75%.  PHMC accepts  alternative  methods of
verification,  in  those   instances  where  verifications   are  part  of   the
underwriting  decision; for example, salaried income may be substantiated either
by means of a form independently prepared and signed by the applicant's employer
or by means of the applicant's most  recent paystub and W-2. In cases where  two
or  more persons have jointly applied for a mortgage loan, the gross incomes and
expenses of  all of  the applicants,  including nonoccupant  co-mortgagors,  are
combined and considered as a unit.
 
    All borrowers applying for relocation loans, as well as borrowers affiliated
with professional associations applying for loans with Loan-to-Value Ratios less
than  or  equal to  80%,  and all  other  borrowers applying  for non-relocation
mortgage loans with respect to which  the Loan-to-Value Ratios are less than  or
equal  to 75%, generally must demonstrate that  the ratio of their total monthly
housing debt to their  monthly gross income  does not exceed  33%, and that  the
ratio  of their total monthly debt to their monthly gross income does not exceed
38%;  borrowers   affiliated  with   professional  associations   applying   for
non-relocation  mortgage loans with  Loan-to-Value Ratios in  excess of 80%, and
all  other   borrowers  applying   for   non-relocation  mortgage   loans   with
Loan-to-Value  Ratios  in excess  of  75%, generally  must  satisfy 28%  and 36%
ratios, respectively. These calculations are based on the amortization  schedule
and the interest rate of the related loan, with each ratio being computed on the
basis  of the proposed monthly mortgage  payment. In the case of adjustable-rate
mortgage loans,  the  interest rate  used  to determine  a  mortgagor's  monthly
payment  for purposes of  the foregoing ratios is  the initial mortgage interest
rate, which is generally lower  than the sum of the  index that would have  been
applicable at origination plus the applicable margin. In evaluating applications
for  Subsidy Loans  and Buy-Down Loans,  the foregoing ratios  are determined by
including in the  applicant's total  monthly housing expense  and total  monthly
debt  the proposed monthly mortgage payment reduced by the amount expected to be
applied on  a monthly  basis under  the related  subsidy agreement  or  buy-down
agreement  or, in certain cases, the mortgage  payment that would result from an
interest rate approximately  2.50% lower  than the Mortgage  Interest Rate.  See
"The  Trust Estates--Mortgage Loans." These ratios may be exceeded if, in PHMC's
judgment,  certain  compensating  factors  are  identified  and  proved  to  its
satisfaction,  including  a  large downpayment,  a  large equity  position  on a
refinance, an  excellent  credit  history, substantial  liquid  net  worth,  the
potential of the borrower for continued employment advancement or income growth,
or  the ability  of the  borrower to  accumulate assets  or to  devote a greater
portion of income to basic needs such as housing expense. Secondary financing is
permitted on mortgage  loans under  certain circumstances. In  those cases,  the
payment  obligations under both primary and  secondary financing are included in
the computation of the debt-to-income  ratios described above, and the  combined
amount   of  primary  and  secondary  loans   will  be  used  to  calculate  the
Loan-to-Value Ratio.  Any secondary  financing permitted  will generally  mature
prior  to  the maturity  date of  the  related mortgage  loan. In  evaluating an
application with respect to a "non-owner-occupied" property, which PHMC  defines
as  a property leased to a third party  by its owner (as distinct from a "second
home," which PHMC defines as an owner-occupied, non-rental property that is  not
the  owner's principal residence), PHMC will permit projected rental income from
such property  to  be  included  in the  applicant's  monthly  gross  income  if
necessary  to satisfy the foregoing ratios. A mortgage loan secured by a two- to
four-family Mortgaged Property is considered to be an owner-occupied property if
the borrower occupies  one of the  units; rental  income on the  other units  is
generally  taken into account in evaluating  the borrower's ability to repay the
mortgage loan.
 
    Property value  is established  in connection  with the  origination of  any
mortgage  loan  (whether  the loan  is  originated for  purchase  or refinancing
purposes) by means  of an  appraisal, which is  typically ordered  by the  party
originating  the  related  mortgage  loan. Consistent  with  this  practice, the
appraisals with respect  to the  loans generated through  corporate contacts  or
through referrals from mortgage brokers or other similar
 
                                       46
<PAGE>
entities  (other than  those certain mortgage  brokers or  similar entities that
process mortgage loans on  PHMC's behalf) are generally  ordered by PHMC,  while
the appraisals with respect to the loans sold to PHMC by third-party lenders are
ordered by those other originators. PHMC may, however, at it discretion, order a
review  appraisal with respect to any loan generated by a third-party lender; in
addition, PHMC typically  orders review  appraisals with respect  to loans  that
certain  mortgage brokers  or similar entities  process on its  behalf. A review
appraisal, like the original appraisal, involves the making of a site visit, the
taking of  photographs, and  the  gathering of  data on  comparable  properties.
Unlike  original  appraisals,  however,  review  appraisals  do  not  include an
inspection of the interior of the house. A review appraisal is generally used to
validate the decision made  based upon the original  appraisal. If the  variance
between  the original  and the review  appraisal is  significant, an explanation
will be sought  and the  underwriting decision  may be  reevaluated. In  certain
instances,  which most frequently  involve the postponement  of the closing with
respect to a mortgage loan on a newly built home due to construction delays, the
recertification of an appraisal  may be required.  A recertification includes  a
physical  inspection  of the  exterior of  the  property and  a statement  by an
appraiser that the present value of the property is no lower than that reflected
on the original appraisal.
 
    There can be no assurance that the values determined by the appraisers as of
the dates  of appraisal  represent the  prices at  which the  related  Mortgaged
Properties  can be sold, either as of  the dates of appraisal or at foreclosure.
The appraisal  of any  Mortgaged Property  reflects the  individual  appraiser's
judgment as to value, based on the market values of comparable homes sold within
the  recent past in comparable nearby locations and on the estimated replacement
cost. The appraisal relates both  to the land and to  the structure; in fact,  a
significant  portion  of the  appraised  value of  a  Mortgaged Property  may be
attributable to the value of the land  rather than to the residence. Because  of
the  unique  locations and  special  features of  certain  Mortgaged Properties,
identifying comparable  properties in  nearby locations  may be  difficult.  The
appraised  values of such Mortgaged Properties will be based to a greater extent
on adjustments made  by the  appraisers to  the appraised  values of  reasonably
similar  properties rather than  on objectively verifiable  sales data. See "The
Trust Estates--Mortgage Loans" herein.
 
    In connection with  all mortgage  loans that it  originates, PHMC  currently
obtains appraisals through LSI. Review appraisals with respect to mortgage loans
that  PHMC acquires, or with respect to  mortgage loans that PHMC originates but
that certain mortgage  brokers or similar  entities process on  its behalf,  are
also  likely  to be  obtained through  LSI.  LSI also  provides its  services to
third-party lenders which sell mortgage loans to PHMC.
 
    Most residential mortgage  lenders have not  originated mortgage loans  with
Loan-to-Value  Ratios in  excess of  80% unless  primary mortgage  insurance was
obtained. PHMC, however, does not require primary mortgage insurance on loans up
to $400,000 that have Loan-to-Value Ratios exceeding 80% but less than or  equal
to  90%.  Only owner-occupied,  primary  residences (excluding  cooperatives and
certain high-rise condominium  dwellings) are  eligible for  this program.  Each
qualifying  loan will be made  at an interest rate that  is higher than the rate
would be if  the Loan-to-Value  Ratio was  80% or  less or  if primary  mortgage
insurance  was  obtained. Loans  that do  not  qualify for  such program  may be
approved if  primary mortgage  insurance is  obtained from  an approved  primary
mortgage  insurance company. In such cases, the  excess over 75% will be covered
by primary mortgage insurance until the unpaid principal balance of the Mortgage
Loan is reduced to an amount that will result in a Loan-to-Value Ratio less than
or equal to 80%.
 
    Where permitted by law, PHMC generally  requires that a borrower include  in
each  monthly payment a  portion of the real  estate taxes, assessments, primary
mortgage insurance  (if applicable),  and hazard  insurance premiums  and  other
similar items with respect to the related mortgage loan. PHMC may, however, on a
case-by-case  basis, in  its discretion  not require  such advance  payments for
certain Mortgage Loans, based on an evaluation of the borrowers' ability to  pay
such taxes and charges as they become due.
 
                                       47
<PAGE>
MORTGAGE ORIGINATION PROCESSING
 
    PHMC,  or  an  affiliate  of PHMC,  may  provide  loan  processing services,
including document preparation, underwriting analysis and closing functions,  to
other  loan originators. It is  possible that PHMC may  purchase loans from such
loan originators,  or  from mortgage  sellers  that purchased  loans  from  such
originators,  that PHMC itself processed. Any  such loans purchased by PHMC will
meet PHMC's underwriting guidelines.
 
SERVICING
 
    Prior to  June  30,  1989,  all residential  mortgage  loans  originated  or
purchased by PHMC for its own account or for the account of Prudential Insurance
were  serviced by its affiliate, PMCC. On June 30, 1989, PHMC assumed all of the
residential mortgage servicing activities then  being performed by PMCC. On  May
31,  1991, PHMC entered into a Subservicing Agreement with AMC pursuant to which
PHMC  will  sub-service  AMC's  current   servicing  portfolio  of  FHA/VA   and
conventional  loans. PHMC is an approved servicer of FNMA, FHLMC and GNMA. As of
December 31,  1991, PHMC  had a  net worth  of approximately  $213 million.  See
"Servicing of the Mortgage Loans--The Servicer" below.
 
                                USE OF PROCEEDS
 
    The  net proceeds from the sale of  each Series of Certificates will be used
by the  Seller  for  the purchase  of  the  Mortgage Loans  represented  by  the
Certificates  of such Series  from PHMC. It  is expected that  PHMC will use the
proceeds from the  sale of  the Mortgage  Loans to  the Seller  for its  general
business purposes, including, without limitation, the origination or acquisition
of  new mortgage loans and  the repayment of borrowings  incurred to finance the
origination or  acquisition  of mortgage  loans,  including the  Mortgage  Loans
underlying the Certificates of such Series.
 
                        SERVICING OF THE MORTGAGE LOANS
 
THE SERVICER
 
    The  Servicer with  respect to  a Series of  Certificates will  be PHMC. See
"PHMC--Servicing" above. The Servicer may subcontract its servicing  obligations
under  any Pooling and  Servicing Agreement. The  Servicer will remain primarily
liable for any such subservicer's performance in accordance with the  applicable
Pooling  and  Servicing  Agreement.  The  Servicer  may  be  released  from  its
obligations  in   certain  circumstances.   See  "Servicing   of  the   Mortgage
Loans--Certain Matters Regarding the Servicer."
 
    Each Prospectus Supplement relating to a Series of Certificates will contain
information  concerning recent delinquency, foreclosure and loan loss experience
on the  mortgage  loans  included  in  PHMC's  servicing  portfolio  which  were
originated  or acquired by  PHMC for its own  account or for  the account of its
affiliates ("Program Loans"), and, if  available, on those Program Loans  having
payment  terms generally similar to  those of the Mortgage  Loans in the related
Trust Estate. PHMC's total servicing portfolio  of Program Loans as of any  date
may  include  loans  having  a  variety  of  payment  characteristics, including
adjustable rate mortgage loans and loans subject to subsidy agreements, and  the
overall  delinquency, foreclosure and loan loss  experience of the Program Loans
taken as a whole  may differ from  that of the Mortgage  Loans contained in  any
given Trust Estate and from that of mortgage servicers generally.
 
PAYMENTS ON MORTGAGE LOANS
 
    The Servicer will, as to each Series of Certificates, establish and maintain
a  separate  trust  account  or  accounts  in  the  name  of  the  Trustee  (the
"Certificate Account"), which must be  maintained with a depository  institution
(the  "Depository") either (i) whose long-term debt obligations (or, in the case
of a depository institution  which is part of  a holding company structure,  the
long  term debt obligations  of which) are,  at the time  of any deposit therein
rated  at  least  "AA"  (or  the  equivalent)  by  each  nationally   recognized
statistical  rating organization that rated  the related Series of Certificates,
or (ii) that  is otherwise acceptable  to the Rating  Agency or Rating  Agencies
rating  the Certificates of such Series and,  if a REMIC election has been made,
that would not cause the  related Trust Estate (or  a segregated pool of  assets
therein) to fail to qualify
 
                                       48
<PAGE>
as a REMIC. To the extent that the portion of funds deposited in the Certificate
Account  at any time exceeds the limit  of insurance coverage established by the
Federal Deposit Insurance Corporation (the "FDIC"), such excess will be  subject
to  loss in the event of the  failure of the Depository. Such insurance coverage
will be based on the number of  holders of Certificates, rather than the  number
of  underlying mortgagors. Holders of the  Subordinated Certificates of a Series
of Shifting Interest Certificates will  bear any such loss  up to the amount  of
principal  payments  on the  related Mortgage  Loans to  which such  holders are
entitled.
 
    The Servicer will  deposit in  the Certificate  Account for  each Series  of
Certificates  any  amounts  representing  scheduled  payments  of  principal and
interest on  the  Mortgage Loans  due  after  the applicable  Cut-Off  Date  but
received  on or prior thereto, and, on a daily basis, except as specified in the
applicable  Pooling  and  Servicing   Agreement,  the  following  payments   and
collections received or made by it with respect to the Mortgage Loans subsequent
to the applicable Cut-Off Date (other than payments due on or before the Cut-Off
Date):
 
         (i)  all payments on  account of principal,  including prepayments, and
    interest;
 
        (ii) all  amounts  received  by  the Servicer  in  connection  with  the
    liquidation  of  defaulted Mortgage  Loans or  property acquired  in respect
    thereof, whether through foreclosure  sale or otherwise, including  payments
    in  connection  with defaulted  Mortgage Loans  received from  the mortgagor
    other than amounts  required to  be paid to  the mortgagor  pursuant to  the
    terms  of  the  applicable  Mortgage  Loan  or  otherwise  pursuant  to  law
    ("Liquidation Proceeds") less, to the extent permitted under the  applicable
    Pooling  and Servicing  Agreement, the  amount of  any expenses  incurred in
    connection with the liquidation of such Mortgage Loans;
 
        (iii) all proceeds received by the  Servicer under any title, hazard  or
    other  insurance policy covering any such Mortgage Loan, other than proceeds
    to be applied to the  restoration or repair of  the property subject to  the
    related  Mortgage  or  released  to the  mortgagor  in  accordance  with the
    applicable Pooling and Servicing Agreement;
 
        (iv) all  amounts required  to  be deposited  therein from  any  related
    Reserve  Fund,  and  amounts  available  under  any  other  form  of  credit
    enhancement applicable to such Series;
 
        (v) all Periodic Advances made by the Servicer;
 
        (vi) all amounts withdrawn from Buy-Down Funds or Subsidy Funds, if any,
    with respect to  such Mortgage Loans,  in accordance with  the terms of  the
    respective agreements applicable thereto;
 
       (vii)  all proceeds  of any such  Mortgage Loans or  property acquired in
    respect thereof  purchased  or  repurchased  pursuant  to  the  Pooling  and
    Servicing Agreement; and
 
       (viii) all other amounts required to be deposited therein pursuant to the
    applicable Pooling and Servicing Agreement.
 
    Notwithstanding  the  foregoing,  the  Servicer  will  be  entitled,  at its
election, either (a)  to withhold and  pay itself the  applicable Servicing  Fee
and/or  to withhold and  pay to the  owner thereof the  Fixed Retained Yield, if
any, from any payment or other recovery  on account of interest as received  and
prior  to deposit in the  Certificate Account or (b)  to withdraw the applicable
Servicing Fee and/or  the Fixed  Retained Yield,  if any,  from the  Certificate
Account  after  the  entire  payment or  recovery  has  been  deposited therein;
provided, however, that with respect to each Trust Estate (or a segregated  pool
of  assets therein)  as to which  a REMIC  election has been  made, the Servicer
will, in each instance, withhold and pay to the owner thereof the Fixed Retained
Yield prior to  deposit of the  related payment or  recovery in the  Certificate
Account.
 
    Periodic  Advances,  amounts withdrawn  from  any Buy-Down  Fund  or Subsidy
Account, amounts withdrawn from  any reserve fund,  and amounts available  under
any other form of credit enhancement, will
 
                                       49
<PAGE>
be  deposited  in  the  Certificate  Account not  later  than  the  business day
preceding the  Distribution  Date on  which  such  amounts are  required  to  be
distributed.  All other amounts will be deposited in the Certificate Account not
later than the business day next following the day of receipt and posting by the
Servicer.
 
    If the Servicer deposits in the Certificate Account for a Series any  amount
not  required to be deposited  therein, it may at  any time withdraw such amount
from such Certificate Account. Funds on  deposit in the Certificate Account  may
be  invested in certain Eligible Investments  maturing in general not later than
the business day  preceding the  next Distribution Date.  In the  event that  an
election has been made to treat the Trust Estate (or a segregated pool of assets
therein)  with respect to a Series as a REMIC, no such Eligible Investments will
be sold or  disposed of  at a  gain prior to  maturity unless  the Servicer  has
received  an opinion of counsel  or other evidence satisfactory  to it that such
sale or  disposition will  not cause  the Trust  Estate (or  segregated pool  of
assets)  to be subject to  the tax on "prohibited  transactions" imposed by Code
Section 860F(a)(1), otherwise subject  the Trust Estate  (or segregated pool  of
assets) to tax, or cause the Trust Estate (or segregated pool of assets) to fail
to  qualify  as  a  REMIC.  Except  as  otherwise  specified  in  the applicable
Prospectus Supplement, all  income and  gain realized from  any such  investment
will be for the account of the Servicer as additional servicing compensation and
all  losses from any such investment will  be deposited by the Servicer into the
Certificate Account immediately as realized.
 
    The Servicer is permitted, from time  to time, to make withdrawals from  the
Certificate  Account for the following purposes,  to the extent permitted in the
applicable Pooling and Servicing Agreement:
 
         (i) to reimburse itself for Periodic Advances;
 
        (ii) to  reimburse  itself  for liquidation  expenses  and  for  amounts
    expended by it in connection with the restoration of damaged property;
 
        (iii) to pay to itself the applicable Servicing Fee and/or pay the owner
    thereof any Fixed Retained Yield, in the event the Servicer is not required,
    and  has elected not, to  withhold such amounts out  of any payment or other
    recovery with respect to a particular Mortgage Loan prior to the deposit  of
    such payment or recovery in the Certificate Account;
 
        (iv)  to reimburse itself for certain  expenses (including taxes paid on
    behalf of the Trust Estate) incurred  by and recoverable by or  reimbursable
    to it;
 
        (v)  to pay to the Seller with respect to each Mortgage Loan or property
    acquired in respect  thereof that has  been repurchased by  the Seller,  all
    amounts  received thereon and not distributed as of the date as of which the
    purchase price of such Mortgage Loan was determined;
 
        (vi) to pay itself  any interest earned on  or investment income  earned
    with  respect  to funds  in the  Certificate Account  (all such  interest or
    income to be withdrawn not later than the next Distribution Date);
 
       (vii) to pay itself from net Liquidation Proceeds allocable to  interest,
    the amount of any unpaid Servicing Fees and any unpaid assumption fees, late
    payment charges or other mortgagor charges on the related Mortgage Loan;
 
       (viii)  to withdraw from the Certificate  Account any amount deposited in
    the Certificate Account that was not required to be deposited therein;
 
        (ix) to make withdrawals from the  Certificate Account in order to  make
    distributions to Certificateholders; and
 
        (x) to clear and terminate the Certificate Account.
 
    The  Servicer  will be  authorized to  appoint a  paying agent  (the "Paying
Agent") to make distributions, as agent for the Servicer, to  Certificateholders
of  a Series. If  the Paying Agent for  a Series is the  Trustee of such Series,
such Paying Agent will  be authorized to make  withdrawals from the  Certificate
Account in order to
 
                                       50
<PAGE>
make  distributions to Certificateholders.  If the Paying Agent  for a Series is
not the Trustee for such Series,  the Servicer will, prior to each  Distribution
Date,  deposit in  immediately available funds  in an account  designated by the
Paying Agent the amount required to be distributed to the Certificateholders  on
such Distribution Date.
 
    The Servicer will cause any Paying Agent which is not the Trustee to execute
and  deliver to the Trustee an instrument in which such Paying Agent agrees with
the Trustee that such Paying Agent will:
 
        (1) hold all amounts deposited with it by the Servicer for  distribution
    to  Certificateholders in trust for  the benefit of Certificateholders until
    such amounts are distributed to Certificateholders or otherwise disposed  of
    as provided in the applicable Pooling and Servicing Agreement;
 
        (2) give the Trustee notice of any default by the Servicer in the making
    of such deposit; and
 
        (3) at any time during the continuance of any such default, upon written
    request  of the Trustee,  forthwith pay to  the Trustee all  amounts held in
    trust by such Paying Agent.
 
PERIODIC ADVANCES AND LIMITATIONS THEREON
 
    With respect  to each  Series,  the Servicer  will  agree to  make  Periodic
Advances in the amounts specified in the applicable Prospectus Supplement. Funds
of  the Servicer  so advanced  are recoverable  by the  Servicer out  of amounts
received on Mortgage Loans  with respect to which  such funds were advanced  and
which  represent late recoveries  of principal and/or  interest respecting which
any such Periodic  Advance was  made, or, if  the Servicer  determines that  any
Periodic  Advance may not be so recoverable, out of any funds in the Certificate
Account. The Servicer  will make Periodic  Advances only if  it determines  that
funds  will  ultimately  be  available  to reimburse  it.  If  specified  in the
applicable Prospectus Supplement, a reserve fund may be established with respect
to any Series  of Certificates in  order to  provide a source  of liquidity  for
Periodic  Advances by the  Servicer. Any such  reserve fund will  be funded by a
deposit made by the Servicer in such an amount specified, and will otherwise  be
as described, in the applicable Prospectus Supplement.
 
ADJUSTMENT TO SERVICING FEE IN CONNECTION WITH PREPAID MORTGAGE LOANS
 
    When a mortgagor prepays all of a Mortgage Loan, the mortgagor pays interest
on the amount prepaid only to the date on which the principal prepayment in full
is  made. Unless otherwise specified in the applicable Prospectus Supplement, in
order to mitigate the adverse effect to Certificateholders of a Series resulting
from the prepayment  in full  of a  Mortgage Loan  the amount  of the  aggregate
Servicing  Fees will be offset by an amount  equal to the accrual of interest on
any fully  prepaid Mortgage  Loan at  the Net  Mortgage Interest  Rate for  such
Mortgage  Loan from the date of its prepayment to but not including the next Due
Date (the "Prepayment  Interest Shortfall").  Such reductions  in the  aggregate
Servicing  Fees will be made by the  Servicer with respect to the Mortgage Loans
under the applicable  Pooling and Servicing  Agreement, but only  to the  extent
that  the aggregate Prepayment Interest Shortfall  does not exceed the aggregate
amount of the Servicing Fee relating  to mortgagor payments or other  recoveries
distributed  on the related Distribution Date.  The amount of the offset against
the  aggregate  Servicing  Fees  will  be  included  in  the  distributions   to
Certificateholders  on  the Distribution  Date  on which  the  related principal
prepayments in full are passed  through to Certificateholders. Unless  otherwise
specified  in  the  applicable  Prospectus  Supplement,  any  interest shortfall
arising from partial  prepayments or  liquidations will  not be  so offset.  See
"Prepayment  and  Yield  Considerations." Payments  of  the  Prepayment Interest
Shortfall will not be obtained  by means of any  subordination of the rights  of
Subordinated Certificateholders or any other credit enhancement arrangement.
 
                                       51
<PAGE>
REPORTS TO CERTIFICATEHOLDERS
 
    Unless  otherwise specified or modified in the related Pooling and Servicing
Agreement for each Series, the Servicer will include, or, in the event a  Paying
Agent  has been  appointed with  respect to such  Series, will  cause the Paying
Agent to include, with each distribution to Certificateholders of record of such
Series a statement setting forth the following information, if applicable:
 
         (i)  to  each  holder  of  a  Certificate  other  than  a   Multi-Class
    Certificate,  the amount of such distribution  allocable to principal of the
    related Mortgage Loans, separately identifying  the aggregate amount of  any
    principal  prepayments  included therein,  the  amount of  such distribution
    allocable to interest on the related Mortgage Loans and the aggregate unpaid
    principal balance of the Mortgage Loans evidenced by each Class after giving
    effect to the principal distributions on such Distribution Date;
 
        (ii) to each holder  of a Multi-Class Certificate  on which an  interest
    distribution and a distribution in reduction of Stated Amount are then being
    made, the amount of such interest distribution and distribution in reduction
    of Stated Amount, and the Stated Amount of each Class after giving effect to
    the  distribution in  reduction of Stated  Amount made  on such Distribution
    Date;
 
        (iii)  to  each  holder  of   a  Multi-Class  Certificate  on  which   a
    distribution  of  interest only  is then  being  made, the  aggregate Stated
    Amount of Certificates outstanding of each Class after giving effect to  the
    distribution  in reduction of  Stated Amount made  on such Distribution Date
    and on any Special Distribution Date  occurring subsequent to the last  such
    report  and after including in the aggregate Stated Amount the Stated Amount
    of the Compound Interest Certificates, if any, outstanding and the amount of
    any accrued interest added  to the Stated Amount  of such Compound  Interest
    Certificates on such Distribution Date;
 
        (iv)  to each  holder of a  Multi-Class Certificate which  is a Compound
    Interest Certificate (but  only if  such holder  shall not  have received  a
    distribution  of interest equal to the  entire amount of interest accrued on
    such Certificate with respect to such Distribution Date):
 
           (a) the information  contained in  the report  delivered pursuant  to
       clause (ii) above;
 
           (b)   the  interest  accrued  on  such  Class  of  Compound  Interest
       Certificates with  respect to  such Distribution  Date and  added to  the
       Stated Amount of such Compound Interest Certificate; and
 
           (c) the Stated Amount of such Class of Compound Interest Certificates
       after  giving  effect to  the addition  thereto  of all  interest accrued
       thereon;
 
        (v)  to  each  holder  of   a  Certificate,  the  amount  of   servicing
    compensation  with  respect  to  the related  Trust  Estate  and  such other
    customary information as the Servicer deems necessary or desirable to enable
    Certificateholders to prepare their tax returns;
 
        (vi) to each holder of a Certificate, the amount by which the  Servicing
    Fee  has been reduced by the aggregate Prepayment Interest Shortfall for the
    related Distribution Date;
 
       (vii) the  aggregate amount  of  any Periodic  Advances by  the  Servicer
    included in the amounts actually distributed to the Certificateholders;
 
       (viii)  to each holder of each  Senior Certificate (other than a Shifting
    Interest Certificate):
 
           (a)  the  amount  of  funds,  if  any,  otherwise  distributable   to
       Subordinated Certificateholders and the amount of any withdrawal from the
       Subordination  Reserve Fund  included in amounts  actually distributed to
       Senior Certificateholders;
 
           (b)  the  Subordinated  Amount  remaining  and  the  balance  in  the
       Subordination Reserve Fund following such distribution; and
 
                                       52
<PAGE>
           (c) the amount of any Senior Class Shortfall with respect to, and the
       amount of any Senior Class Carryover Shortfall outstanding prior to, such
       Distribution Date;
 
        (ix)  to  each  holder of  a  Certificate  entitled to  the  benefits of
    payments under any form of credit enhancement or from any reserve fund other
    than the Subordination Reserve Fund:
 
           (a) the  amounts  so  distributed  under  any  such  form  of  credit
       enhancement  or from any such reserve fund on the applicable Distribution
       Date; and
 
           (b) the amount of  coverage remaining under any  such form of  credit
       enhancement  and the balance in any such fund, after giving effect to any
       payments thereunder and other amounts charged thereto on the Distribution
       Date;
 
        (x) in the case of a Series of Certificates with a variable Pass-Through
    Rate, such Pass-Through Rate;
 
        (xi) the  book value  of any  collateral acquired  by the  Trust  Estate
    through foreclosure or
    otherwise;
 
        (xii)  the unpaid principal balance of any Mortgage Loan as to which the
    Servicer has determined  not to  foreclose because it  believes the  related
    Mortgaged  Property may be contaminated with or affected by hazardous wastes
    or hazardous substances; and
 
       (xiii) the number and  aggregate principal amount  of Mortgage Loans  one
    month, two months and three or more months delinquent.
 
    In  addition,  within a  reasonable period  of  time after  the end  of each
calendar year, the Servicer will furnish either directly, or through the  Paying
Agent,  if any, a report to each  Certificateholder of record at any time during
such calendar year (a) as to the  aggregate of amounts reported pursuant to  (i)
and  (ii) above,  as applicable, for  such calendar  year or, in  the event such
person was a Certificateholder of record during a portion of such calendar year,
for the  applicable portion  of such  year  and (b)  such other  information  as
required  by the Code and applicable  regulations thereunder and as the Servicer
deems necessary or desirable to  enable Certificateholders to prepare their  tax
returns.  (Section 4.02.) In the  event that an election  has been made to treat
the Trust  Estate (or  a segregated  pool of  assets therein)  as a  REMIC,  the
Trustee  will be required  to sign the  Federal income tax  returns of the REMIC
(which will  be prepared  by  the Servicer).  See  "Certain Federal  Income  Tax
Consequences--Federal  Income Tax Consequences for REMIC Certificates-- Taxation
of Residual Certificates--Administrative Matters."
 
REPORTS TO THE TRUSTEE
 
    No later  than  15 days  after  each Distribution  Date  for a  Series,  the
Servicer will provide the Trustee of such Series with a report setting forth the
status  of the related Certificate Account and the related Subordination Reserve
Fund and any other reserve fund as of the close of business on such Distribution
Date, stating that all distributions required  to be made by the Servicer  under
the  applicable  Pooling  and Servicing  Agreement  have  been made  (or  if any
required distribution has not been made  by the Servicer, specifying the  nature
and  status thereof) and showing, for the  period covered by such statement, the
aggregate of deposits to and withdrawals  from the Certificate Account for  each
category  of deposits  and withdrawals  specified in  the Pooling  and Servicing
Agreement. Such statement shall also include information as to (i) the aggregate
unpaid principal balances of all the Mortgage Loans as of the close of  business
on the last day of the month preceding the month in which such Distribution Date
occurs;  and (ii)  the amount  of any Subordination  Reserve Fund  and any other
reserve fund,  as  of  such  Distribution  Date  (after  giving  effect  to  the
distributions on such Distribution Date). Copies of such reports may be obtained
by Certificateholders upon request in writing addressed to the Servicer, c/o The
Prudential  Home  Mortgage Company,  Inc., 7470  New Technology  Way, Frederick,
Maryland 21701. If the Servicer should fail to provide such copies, they may  be
obtained from the Trustee. (Section 3.12).
 
                                       53
<PAGE>
COLLECTION AND OTHER SERVICING PROCEDURES
 
    The Servicer will make reasonable efforts to collect all payments called for
under  the Mortgage Loans  and will, consistent with  the applicable Pooling and
Servicing Agreement and any  applicable agreement governing  any form of  credit
enhancement,  follow such  collection procedures as  it follows  with respect to
mortgage loans  serviced  by it  that  are  comparable to  the  Mortgage  Loans.
Consistent  with the above, the  Servicer may, in its  discretion, (i) waive any
prepayment charge, assumption fee,  late payment charge or  any other charge  in
connection  with  the prepayment  of a  Mortgage  Loan and  (ii) arrange  with a
mortgagor a schedule for  the liquidation of deficiencies  running for not  more
than 180 days after the applicable Due Date.
 
    Under  the  Pooling and  Servicing Agreement,  the  Servicer, to  the extent
permitted by law, will establish and  maintain one or more escrow accounts  (the
"Servicing  Account")  in which  the Servicer  will be  required to  deposit any
payments made by mortgagors in advance for taxes, assessments, primary  mortgage
(if   applicable)  and  hazard  insurance  premiums  and  other  similar  items.
Withdrawals from the Servicing Account may  be made to effect timely payment  of
taxes,  assessments,  mortgage and  hazard  insurance, to  refund  to mortgagors
amounts determined to be overages, to pay interest to mortgagors on balances  in
the Servicing Account, if required, and to clear and terminate such account. The
Servicer  will be responsible for the  administration of each Servicing Account.
The Servicer will be obligated to  advance certain amounts which are not  timely
paid  by the mortgagors, to  the extent that it  determines, in good faith, that
they will be  recoverable out  of insurance proceeds,  liquidation proceeds,  or
otherwise.  Alternatively,  in lieu  of  establishing a  Servicing  Account, the
Servicer may procure a performance bond or other form of insurance coverage,  in
an  amount  acceptable  to  the  Rating  Agency  rating  the  related  Series of
Certificates, covering loss occasioned  by the failure  to escrow such  amounts.
(Section 3.06.)
 
ENFORCEMENT OF DUE-ON-SALE CLAUSES; REALIZATION UPON DEFAULTED MORTGAGE LOANS
 
    With  respect to  each Mortgage  Loan having  a fixed  interest rate, unless
otherwise specified in  the applicable Prospectus  Supplement, each Pooling  and
Servicing  Agreement will provide that, when  any Mortgaged Property is about to
be conveyed by the mortgagor, the Servicer will, to the extent it has  knowledge
of  such prospective conveyance, exercise its  rights to accelerate the maturity
of such Mortgage Loan under the "due-on-sale" clause applicable thereto, if any,
unless it is  not exercisable  under applicable law  or if  such exercise  would
result  in loss  of insurance  coverage with  respect to  such Mortgage  Loan or
would, in the Servicer's judgment, be reasonably likely to result in  litigation
by  the mortgagor. In either  case, the Servicer is  authorized to take or enter
into an assumption and  modification agreement from or  with the person to  whom
such  Mortgaged Property has been or is  about to be conveyed, pursuant to which
such person becomes  liable under the  Mortgage Note and,  unless prohibited  by
applicable  state law, the  mortgagor remains liable  thereon, provided that the
Mortgage Loan will continue to be covered  by any pool insurance policy and  any
related  primary mortgage insurance  policy and the  Mortgage Interest Rate with
respect to such Mortgage Loan and the payment terms shall remain unchanged.  The
Servicer  will also be authorized,  with the prior approval  of the pool insurer
and the  primary mortgage  insurer, if  any,  to enter  into a  substitution  of
liability  agreement with such person, pursuant  to which the original mortgagor
is released  from liability  and such  person is  substituted as  mortgagor  and
becomes liable under the Mortgage Note. (Section 3.08)
 
    The Servicer is obligated under the Pooling and Servicing Agreement for each
Series  to realize upon  defaulted Mortgage Loans in  accordance with its normal
servicing practices, which will conform  generally to those of prudent  mortgage
lending  institutions which service mortgage loans of  the same type in the same
jurisdictions. Notwithstanding the foregoing,  the Servicer is authorized  under
the  Pooling and  Servicing Agreement  to permit  the assumption  of a defaulted
Mortgage Loan rather than to foreclose  or accept a deed-in-lieu of  foreclosure
if,  in the  Servicer's judgment, the  default is  unlikely to be  cured and the
assuming borrower meets PHMC's underwriting  guidelines. In connection with  any
such assumption, the Mortgage Interest Rate and the payment terms of the related
Mortgage  Note  will  not  be changed.  See  also  "The  Trust Estates--Mortgage
Loans--Optional Repurchases,"  above,  with respect  to  the Seller's  right  to
repurchase  defaulted Mortgage  Loans. Further,  the Servicer  may encourage the
refinancing of such defaulted Mortgage
 
                                       54
<PAGE>
Loans, including  Mortgage Loans  that would  permit creditworthy  borrowers  to
assume  the outstanding indebtedness. In the case of foreclosure or of damage to
a Mortgaged Property from  an uninsured cause, the  Servicer is not required  to
expend  its own funds  to foreclose or  restore any damaged  property, unless it
reasonably determines (i) that such foreclosure or restoration will increase the
proceeds to Certificateholders  of such  Series of liquidation  of the  Mortgage
Loan  after reimbursement of  the Servicer for  its expenses and  (ii) that such
expenses will be recoverable  to it through Liquidation  Proceeds. In the  event
that  the Servicer  has expended  its own  funds for  foreclosure or  to restore
damaged property, it will be entitled to charge the Certificate Account for such
Series an amount equal to all costs and expenses incurred by it. (Sections  3.03
and 3.09).
 
    The  Servicer is not obligated to  foreclose on any Mortgaged Property which
it believes  may  be  contaminated  with or  affected  by  hazardous  wastes  or
hazardous   substances.   See   "Certain   Legal   Aspects   of   the   Mortgage
Loans--Environmental Considerations." If  the Servicer does  not foreclose on  a
Mortgaged  Property, the Certificateholders of the related Series may experience
a loss on  the related Mortgage  Loan. The Servicer  will not be  liable to  the
Certificateholders  if it  fails to foreclose  on a Mortgaged  Property which it
believes may be so contaminated or affected, even if such Mortgaged Property is,
in fact, not so contaminated or  affected. Conversely, the Servicer will not  be
liable  to  the  Certificateholders  if,  based  on  its  belief  that  no  such
contamination or effect exists, the Servicer forecloses on a Mortgaged  Property
and  takes  title  to such  Mortgaged  Property, and  thereafter  such Mortgaged
Property is determined to be so contaminated or affected.
 
    The Servicer may  foreclose against property  securing a defaulted  Mortgage
Loan  either by foreclosure, by sale or by strict foreclosure and in the event a
deficiency judgment  is available  against the  mortgagor or  other person  (see
"Certain  Legal Aspects  of the Mortgage  Loans--Anti-Deficiency Legislation and
Other Limitations on Lenders" for a discussion of the availability of deficiency
judgments), may proceed for the deficiency. It is anticipated that in most cases
the Servicer  will  not seek  deficiency  judgments,  and the  Servicer  is  not
required under the Pooling and Servicing Agreement to seek deficiency judgments.
 
    With  respect to a Trust Estate (or  a segregated pool of assets therein) as
to which a REMIC election  has been made, if  the trustee acquires ownership  of
any  Mortgaged Property  as a  result of  a default  or imminent  default of any
Mortgage Loan secured by such Mortgaged  Property, the Trustee will be  required
to  dispose of such property  within two years following  its acquisition by the
Trust Estate. The  Servicer also will  be required to  administer the  Mortgaged
Property  in a  manner which does  not cause  the Mortgaged Property  to fail to
qualify as "foreclosure property" within the meaning of Code Section  860G(a)(8)
or result in the receipt by the Trust Estate of any "net income from foreclosure
property"  within  the  meaning  of Code  Section  860G(c)(2),  respectively. In
general, this would preclude  the holding of the  Mortgaged Property by a  party
acting as a dealer in such property or the receipt of rental income based on the
profits  of  the  lessee  of  such property.  See  "Certain  Federal  Income Tax
Consequences."
 
FIXED RETAINED YIELD, SERVICING COMPENSATION AND PAYMENT OF EXPENSES
 
    Fixed Retained Yield with respect to  any Mortgage Loan is that portion,  if
any,  of interest  at the  Mortgage Interest  Rate that  is not  included in the
related Trust  Estate.  The Prospectus  Supplement  for a  Series  will  specify
whether  there is any Fixed Retained Yield with respect to the Mortgage Loans of
such Series.  If  so,  the  Fixed  Retained  Yield  will  be  established  on  a
loan-by-loan  basis  and will  be specified  in the  schedule of  Mortgage Loans
attached as an exhibit  to the applicable Pooling  and Servicing Agreement.  The
Servicer may deduct the Fixed Retained Yield from mortgagor payments as received
and prior to deposit of such payments in the Certificate Account for such Series
or  may  (unless an  election has  been made  to  treat the  Trust Estate  (or a
segregated pool of assets therein) as a REMIC) withdraw the Fixed Retained Yield
from the Certificate Account after the entire payment has been deposited in  the
Certificate  Account. Notwithstanding the foregoing, with respect to any payment
of interest received by the Servicer  relating to a Mortgage Loan (whether  paid
by  the mortgagor  or received  as Liquidation  Proceeds, insurance  proceeds or
otherwise)
 
                                       55
<PAGE>
which is less than  the full amount  of interest then due  with respect to  such
Mortgage  Loan,  the owner  of the  Fixed  Retained Yield  with respect  to such
Mortgage Loan will receive as its Fixed  Retained Yield only its pro rata  share
of such interest payment.
 
    For  each Series of Certificates,  the Servicer will be  entitled to be paid
the Servicing  Fee  on the  related  Mortgage  Loans until  termination  of  the
applicable  Pooling and Servicing Agreement, subject, unless otherwise specified
in the  applicable  Prospectus  Supplement, to  adjustment  as  described  under
"Adjustment  to Servicing Fee in Connection with Prepaid and Liquidated Mortgage
Loans." The Servicer, at its election, will  pay itself the Servicing Fee for  a
Series  with respect to each Mortgage Loan  by (a) withholding the Servicing Fee
from any scheduled payment of interest prior  to deposit of such payment in  the
Certificate  Account for such  Series or (b) withdrawing  the Servicing Fee from
the Certificate Account after the entire interest payment has been deposited  in
the Certificate Account. The Servicer may also pay itself out of the Liquidation
Proceeds  of  a  Mortgage Loan  or  other  recoveries with  respect  thereto, or
withdraw from the Certificate Account, or if such Liquidation Proceeds or  other
recoveries  are insufficient, from  Net Foreclosure Profits  with respect to the
related Distribution Date the Servicing Fee in respect of such Mortgage Loan  to
the  extent  provided in  the applicable  Pooling  and Servicing  Agreement. The
Servicing Fee with respect to the Mortgage Loans underlying the Certificates  of
a  Series will be specified in  the applicable Prospectus Supplement. Additional
servicing compensation in the form of prepayment charges, assumption fees,  late
payment charges or otherwise will be retained by the Servicer.
 
    The Servicer will pay all expenses incurred in connection with the servicing
of  the  Mortgage  Loans  underlying a  Series,  including,  without limitation,
payment of  the hazard  insurance  policy premiums  and  fees or  other  amounts
payable  pursuant  to  any  applicable agreement  for  the  provision  of credit
enhancement for  such Series,  payment  of the  fees  and disbursements  of  the
Trustee  and any custodian, fees due to the independent accountants and expenses
incurred in  connection with  distributions and  reports to  Certificateholders.
Certain  of these expenses may  be reimbursable to the  Servicer pursuant to the
terms of the applicable Pooling and Servicing Agreement.
 
    As set forth in  the preceding paragraph, the  Servicer will be entitled  to
reimbursement  for  certain  expenses  incurred by  it  in  connection  with the
liquidation of defaulted Mortgage Loans. In the event that claims are either not
made or are not fully paid from  any applicable form of credit enhancement,  the
related Trust Estate will suffer a loss to the extent that Liquidation Proceeds,
after  reimbursement of the Servicing Fee and  the expenses of the Servicer, are
less than the principal  balance of the related  Mortgage Loan. The Servicer  is
also  entitled  to  reimbursement  from  the  Certificate  Account  of  Periodic
Advances, of advances made  by it to pay  taxes, insurance premiums and  similar
items  with respect to any Mortgaged Property, of expenditures incurred by it in
connection with the restoration of any Mortgaged Property and of certain  losses
against which it is indemnified by the Trust Estate. (Section 3.03).
 
EVIDENCE AS TO COMPLIANCE
 
    The  Servicer will deliver  to the Trustee  annually, on or  before the date
specified in  the  Pooling and  Servicing  Agreement, an  Officer's  Certificate
stating that (i) a review of the activities of the Servicer during the preceding
calendar  year and of performance under  the Pooling and Servicing Agreement has
been made under the supervision  of such officer, and (ii)  to the best of  such
officer's  knowledge, based on  such review, the Servicer  has fulfilled all its
obligations under the Pooling and Servicing Agreement throughout such year,  or,
if  there  has  been  a  default in  the  fulfillment  of  any  such obligation,
specifying each such  default known to  such officer and  the nature and  status
thereof.  Such Officer's  Certificate shall be  accompanied by a  statement of a
firm of independent public accountants  to the effect that,  on the basis of  an
examination  of certain  documents and  records relating  to the  mortgage loans
being serviced by the Servicer,  conducted substantially in compliance with  the
Uniform  Single  Audit  Program  for Mortgage  Bankers,  the  servicing  of such
mortgage loans was conducted  in compliance with the  provisions of the  Pooling
and  Servicing  Agreement  and other  similar  agreements, except  for  (i) such
exceptions as such firm believes to be immaterial and (ii) such other exceptions
as are set forth in such statement. (Sections 3.13, 3.14).
 
                                       56
<PAGE>
CERTAIN MATTERS REGARDING THE SERVICER
 
    The Servicer  may not  resign  from its  obligations  and duties  under  the
Pooling  and  Servicing Agreement  for  each Series  (other  than its  duties as
Certificate Registrar for such Series, if it is acting as such), except upon its
determination that  its  duties  thereunder  are  no  longer  permissible  under
applicable  law or are in material conflict by reason of applicable law with any
other activities of a type and nature carried on by it. No such resignation will
become effective until the Trustee for  such Series or a successor servicer  has
assumed  the Servicer's obligations  and duties under  the Pooling and Servicing
Agreement. (Section 6.04).  If the  Servicer resigns  for any  of the  foregoing
reasons  and the  Trustee is  unable or  unwilling to  assume responsibility for
servicing the Mortgage  Loans, it  may appoint another  institution as  mortgage
loan servicer, as described under "Rights Upon Event of Default" below.
 
    The  Pooling  and Servicing  Agreement will  also  provide that  neither the
Servicer, any subservicer, nor any partner, director, officer, employee or agent
of either  of them  (or of  any  partner of  the Servicer),  will be  under  any
liability  to the Trust Estate or the  Certificateholders, for the taking of any
action or for refraining from the taking of any action in good faith pursuant to
the Pooling  and  Servicing Agreement,  or  for errors  in  judgment;  provided,
however, that neither the Servicer, any subservicer, nor any such person will be
protected  against any  liability that would  otherwise be imposed  by reason of
willful misfeasance, bad faith or gross negligence in the performance of his  or
its  duties or  by reason of  reckless disregard  of his or  its obligations and
duties thereunder. The Pooling and Servicing Agreement will further provide that
the Servicer, any subservicer, and  any partner, director, officer, employee  or
agent of either of them (or of any partner of the Servicer) shall be entitled to
indemnification  by the Trust Estate and will be held harmless against any loss,
liability or expense incurred  in connection with any  legal action relating  to
the  Pooling and Servicing  Agreement or the Certificates,  other than any loss,
liability or expense  incurred by reason  of willful misfeasance,  bad faith  or
gross negligence in the performance of his or its duties thereunder or by reason
of  reckless  disregard of  his  or its  obligations  and duties  thereunder. In
addition, the Pooling  and Servicing  Agreement will provide  that the  Servicer
will  not be under  any obligation to  appear in, prosecute  or defend any legal
action that is  not incidental  to its duties  under the  Pooling and  Servicing
Agreement  and that in its  opinion may involve it  in any expense or liability.
The Servicer may, however, in its  discretion, undertake any such action  deemed
by it necessary or desirable with respect to the Pooling and Servicing Agreement
and  the  rights and  duties of  the parties  thereto and  the interests  of the
Certificateholders thereunder. In such  event, the legal  expenses and costs  of
such  action and any  liability resulting therefrom will  be expenses, costs and
liabilities of  the  Trust  Estate and  the  Servicer  will be  entitled  to  be
reimbursed  therefor out of the  Certificate Account, and any  loss to the Trust
Estate arising from such right of reimbursement will be allocated pro rata among
the various Classes of Certificates unless otherwise specified in the applicable
Pooling and Servicing Agreement. (Section 6.03).
 
    Any person into  which the Servicer  may be merged  or consolidated, or  any
person  resulting  from any  merger, conversion  or  consolidation to  which the
Servicer is  a party,  or any  person  succeeding to  the business  through  the
transfer  of substantially all of its assets, or otherwise, of the Servicer will
be the successor of the Servicer  under the Pooling and Servicing Agreement  for
each  Series provided  that such successor  or resulting entity  is qualified to
service mortgage loans for FNMA  or FHLMC and has a  net worth of not less  than
$15,000,000.
 
    The Servicer also has the right to assign its rights and delegate its duties
and  obligations  under the  Pooling and  Servicing  Agreement for  each Series;
provided that  (i) the  purchaser  or transferee  accepting such  assignment  or
delegation  is  qualified  to  service  mortgage loans  for  FNMA  or  FHLMC, is
satisfactory to the Trustee for such  Series, in the exercise of its  reasonable
judgment,  and executes and  delivers to the  Trustee an agreement,  in form and
substance reasonably satisfactory to the  Trustee, which contains an  assumption
by  such  purchaser  or  transferee  of the  due  and  punctual  performance and
observance of each  covenant and condition  to be performed  or observed by  the
Servicer  under the Pooling and  Servicing Agreement from and  after the date of
such  agreement;  and  (ii)  each  applicable  Rating  Agency's  rating  of  any
Certificates  for such  Series in effect  immediately prior  to such assignment,
sale or transfer is not
 
                                       57
<PAGE>
reasonably likely to be qualified, downgraded  or withdrawn as a result of  such
assignment,  sale or transfer and the  Certificates are not reasonably likely to
be placed on credit review status by  any such Rating Agency. The Servicer  will
be  released from its obligations under the Pooling and Servicing Agreement upon
any such assignment and delegation, except that the Servicer will remain  liable
for  all liabilities and obligations  incurred by it prior  to the time that the
conditions contained in clauses (i) and (ii) above are met. (Section 6.02).
 
                      THE POOLING AND SERVICING AGREEMENT
 
EVENTS OF DEFAULT
 
    Events of Default under the Pooling and Servicing Agreement for each  Series
include  (i) any failure by the Servicer to distribute to Certificateholders any
required payment which  continues unremedied  for 10  days after  the giving  of
written  notice of such failure to the  Servicer by the Trustee for such Series,
or to the Servicer and the Trustee by the holders of Certificates of such Series
having  voting  rights  allocated  to  such  Certificates  ("Voting  Interests")
aggregating  not  less  than  25%  of  the  Voting  Interests  allocated  to all
Certificates for such Series; (ii) any  failure by the Servicer duly to  observe
or  perform in any material respect any  other of its covenants or agreements in
the Pooling and Servicing Agreement which  continues unremedied for 60 days  (or
30  days in the case of a failure to maintain any pool insurance policy required
to be maintained  pursuant to  the Pooling  and Servicing  Agreement) after  the
giving  of written notice of such failure to  the Servicer by the Trustee, or to
the Servicer and  Trustee by the  holders of Certificates  aggregating not  less
than   25%  of  the  Voting  Interests;  (iii)  certain  events  in  insolvency,
readjustment  of  debt,  marshalling  of  assets  and  liabilities  or   similar
proceedings  and  certain  action  by the  Servicer  indicating  its insolvency,
reorganization or inability to  pay its obligations and  (iv) both the  Servicer
and  any subservicer appointed  by it to  become ineligible to  service for both
FNMA and FHLMC (unless remedied within 90 days). (Section 7.01).
 
RIGHTS UPON EVENT OF DEFAULT
 
    So long as  an Event  of Default remains  unremedied under  the Pooling  and
Servicing  Agreement for  a Series,  the Trustee for  such Series  or holders of
Certificates of such Series evidencing not less than 25% of the Voting Interests
in the  Trust  Estate for  such  Series may  terminate  all of  the  rights  and
obligations of the Servicer under the Pooling and Servicing Agreement and in and
to  the  Mortgage Loans  (other than  the  Servicer's right  to recovery  of any
Initial Deposit for such Series, the  aggregate Servicing Fees due prior to  the
date  of termination,  and other expenses  and amounts advanced  pursuant to the
terms of the  Pooling and Servicing  Agreement, which rights  the Servicer  will
retain  under all circumstances), whereupon the  Trustee will succeed to all the
responsibilities, duties and liabilities of  the Servicer under the Pooling  and
Servicing  Agreement and will be entitled  to monthly servicing compensation not
to exceed  the  aggregate  Servicing  Fees together  with  the  other  servicing
compensation  in the form of assumption  fees, late payment charges or otherwise
as provided  in the  Pooling and  Servicing  Agreement. In  the event  that  the
Trustee  is unwilling or unable so to act, it may select, pursuant to the public
bid procedure described in  the applicable Pooling  and Servicing Agreement,  or
petition  a  court of  competent  jurisdiction to  appoint,  a housing  and home
finance institution, bank or mortgage servicing institution with a net worth  of
at least $10,000,000 to act as successor to the Servicer under the provisions of
the  Pooling and Servicing  Agreement relating to the  servicing of the Mortgage
Loans; provided however, that until such  a successor Servicer is appointed  and
has  assumed the responsibilities, duties and  liabilities of the Servicer under
the Pooling and Servicing Agreement, the Trustee shall continue as the successor
to the Servicer as described  above. In the event  such public bid procedure  is
utilized,  the successor servicer would be entitled to servicing compensation in
an amount  equal  to the  aggregate  Servicing  Fees, together  with  the  other
servicing  compensation in the form of  assumption fees, late payment charges or
otherwise, as provided in the Pooling and Servicing Agreement, and the  Servicer
would  be entitled to receive the net profits, if any, realized from the sale of
its servicing rights and obligations under the Pooling and Servicing  Agreement.
(Sections 7.01 and 7.05).
 
    During  the  continuance  of any  Event  of  Default under  the  Pooling and
Servicing Agreement for  a Series,  the Trustee for  such Series  will have  the
right  to  take  action  to  enforce its  rights  and  remedies  and  to protect
 
                                       58
<PAGE>
and enforce the rights  and remedies of the  Certificateholders of such  Series,
and holders of Certificates evidencing not less than 25% of the Voting Interests
for  such  Series  may direct  the  time,  method and  place  of  conducting any
proceeding for any remedy  available to the Trustee  or exercising any trust  or
power  conferred upon the  Trustee. However, the  Trustee will not  be under any
obligation to pursue any such remedy or to exercise any of such trusts or powers
unless such Certificateholders have offered  the Trustee reasonable security  or
indemnity  against the cost,  expenses and liabilities which  may be incurred by
the Trustee thereby. Also, the Trustee may decline to follow any such  direction
if  the Trustee  determines that  the action or  proceeding so  directed may not
lawfully be  taken or  would involve  it in  personal liability  or be  unjustly
prejudicial to the non-assenting Certificateholders. (Sections 7.02 and 7.03).
 
    No  Certificateholder of a Series, solely  by virtue of such holder's status
as a Certificateholder,  will have  any right  under the  Pooling and  Servicing
Agreement  for  such Series  to  institute any  proceeding  with respect  to the
Pooling and Servicing Agreement, unless such holder previously has given to  the
Trustee  for such  Series written  notice of default  and unless  the holders of
Certificates evidencing  not less  than 25%  of the  Voting Interests  for  such
Series  have made written request upon  the Trustee to institute such proceeding
in its own name as Trustee thereunder and have offered to the Trustee reasonable
indemnity and the Trustee for 60 days has neglected or refused to institute  any
such proceeding. (Section 10.03).
 
AMENDMENT
 
    Each  Pooling  and Servicing  Agreement may  be amended  by the  Seller, the
Servicer and the Trustee without the  consent of the Certificateholders, (i)  to
cure any ambiguity, (ii) to correct or supplement any provision therein that may
be  inconsistent with any other provision therein, (iii) to modify, eliminate or
add to any of its  provisions to such extent as  shall be necessary to  maintain
the  qualification of the Trust Estate (or  a segregated pool of assets therein)
as a REMIC at  all times that  any Certificates are outstanding  or to avoid  or
minimize  the risk of the imposition of any  tax on the Trust Estate pursuant to
the Code that  would be  a claim  against the  Trust Estate,  provided that  the
Trustee  has received an  opinion of counsel  to the effect  that such action is
necessary or desirable to  maintain such qualification or  to avoid or  minimize
the  risk  of the  imposition  of any  such  tax and  such  action will  not, as
evidenced by such opinion of counsel,  adversely affect in any material  respect
the  interests of any Certificateholder, (iv) to change the timing and/or nature
of deposits into the Certificate Account, provided that such change will not, as
evidenced by an opinion of counsel, adversely affect in any material respect the
interests of  any Certificateholder  and  that such  change will  not  adversely
affect  the then current rating assigned to  any Certificates, as evidenced by a
letter from  each  Rating Agency  to  such effect,  (v)  to add  to,  modify  or
eliminate  any provisions therein restricting transfers of residual Certificates
to certain  disqualified organizations  described below  under "Certain  Federal
Income   Tax   Consequences--Federal   Income   Tax   Consequences   for   REMIC
Certificates--Taxation of  Residual  Certificates--Tax-Related  Restrictions  on
Transfer  of Residual Certificates,"  or (vi) to make  any other provisions with
respect to  matters  or  questions  arising under  such  Pooling  and  Servicing
Agreement  that are not inconsistent with  the provisions thereof, provided that
such action will not, as evidenced by an opinion of counsel, adversely affect in
any material  respect the  interests of  the Certificateholders  of the  related
Series.  The Pooling and Servicing Agreement may  also be amended by the Seller,
the Servicer and  the Trustee with  the consent of  the holders of  Certificates
evidencing  interests aggregating not less than  66 2/3% of the Voting Interests
evidenced by the Certificates  of each Class or  Subclass affected thereby,  for
the purpose of adding any provisions to or changing in any manner or eliminating
any of the provisions of such Pooling and Servicing Agreement or of modifying in
any manner the rights of the Certificateholders; provided, however, that no such
amendment  may (i) reduce in  any manner the amount of,  or delay the timing of,
any payments received on or with respect to Mortgage Loans that are required  to
be  distributed on any Certificates,  without the consent of  the holder of such
Certificate, (ii) adversely affect in any material respect the interests of  the
holders  of a Class  or Subclass of Certificates  of a Series  in a manner other
than that  set  forth  in (i)  above  without  the consent  of  the  holders  of
Certificates aggregating not less than 66 2/3% of the Voting Interests evidenced
by  such  Class  or  Subclass,  or  (iii)  reduce  the  aforesaid  percentage of
Certificates of any  Class or  Subclass, the holders  of which  are required  to
consent to such amendment, without the
 
                                       59
<PAGE>
consent  of the holders of  all Certificates of such  Class or Subclass affected
then outstanding. Notwithstanding the foregoing, the Trustee will not consent to
any such  amendment if  such amendment  would  subject the  Trust Estate  (or  a
segregated  pool  of  assets therein)  to  tax  or cause  the  Trust  Estate (or
segregated pool of assets therein) to fail to qualify as a REMIC.
 
TERMINATION; PURCHASE OF MORTGAGE LOANS
 
    The obligations created by the Pooling and Servicing Agreement for a  Series
of  Certificates will  terminate on  the Distribution  Date following  the final
payment or other liquidation of the  last Mortgage Loan subject thereto and  the
disposition of all property acquired upon foreclosure of any such Mortgage Loan.
In  no  event, however,  will the  trust  created by  the Pooling  and Servicing
Agreement continue beyond the expiration of 21 years from the death of the  last
survivor  of certain persons named in  such Pooling and Servicing Agreement. For
each Series of Certificates, the Trustee will give written notice of termination
of the Pooling and Servicing Agreement to each Certificateholder, and the  final
distribution   will  be  made  only  upon  surrender  and  cancellation  of  the
Certificates at an office or agency appointed by the Seller and specified in the
notice of termination.
 
    If so  provided  in  the  related Prospectus  Supplement,  the  Pooling  and
Servicing  Agreement  for  each  Series of  Certificates  will  permit,  but not
require, the  person  or persons  specified  in such  Prospectus  Supplement  to
purchase  from the Trust Estate for such  Series all remaining Mortgage Loans at
the time subject to the Pooling and Servicing Agreement at a price specified  in
such  Prospectus  Supplement. In  the  event that  the  Servicer has  caused the
related Trust Estate (or a segregated pool of assets therein) to be treated as a
REMIC, any  such  purchase  will  be effected  only  pursuant  to  a  "qualified
liquidation"  as defined  in Code Section  860F(a)(4)(A) and the  receipt by the
Trustee of an opinion of counsel that  such purchase will not (i) result in  the
imposition  of a tax on "prohibited transactions" under Code Section 860F(a)(1),
(ii) otherwise subject the REMIC to tax,  or (iii) cause the Trust Estate (or  a
segregated  pool of assets) to fail to qualify  as a REMIC. The exercise of such
right will effect early retirement of  the Certificates of that Series, but  the
right so to purchase may be exercised only after the aggregate principal balance
of  the Mortgage Loans  for such Series at  the time of purchase  is less than a
specified percentage of the aggregate principal balance at the Cut-Off Date  for
the Series, or after the date set forth in the related Prospectus Supplement.
 
THE TRUSTEE
 
    The  Trustee under each Pooling and Servicing Agreement (the "Trustee") will
be named in the applicable Prospectus  Supplement. The commercial bank or  trust
company serving as Trustee may have normal banking relationships with the Seller
or any of its affiliates.
 
    The  Trustee may  resign at any  time, in  which event the  Servicer will be
obligated to  appoint a  successor trustee.  The Servicer  may also  remove  the
Trustee if the Trustee ceases to be eligible to act as Trustee under the Pooling
and  Servicing Agreement, if the Trustee becomes insolvent or in order to change
the situs of the Trust Estate for state tax reasons. Upon becoming aware of such
circumstances, the  Servicer  will  become  obligated  to  appoint  a  successor
trustee.  The  Trustee  may  also be  removed  at  any time  by  the  holders of
Certificates evidencing not less than 51%  of the Voting Interests in the  Trust
Estate,  except that, any Certificate registered in  the name of the Seller, the
Servicer or any affiliate thereof will not be taken into account in  determining
whether  the requisite Voting  Interest in the Trust  Estate necessary to effect
any such removal has been obtained. Any resignation and removal of the  Trustee,
and  the appointment  of a  successor trustee,  will not  become effective until
acceptance of such appointment  by the successor trustee.  The Trustee, and  any
successor  trustee,  will  have  a  combined capital  and  surplus  of  at least
$50,000,000, or  will  be a  member  of a  bank  holding system,  the  aggregate
combined capital and surplus of which is at least $50,000,000, provided that the
Trustee's and any such successor trustee's separate capital and surplus shall at
all  times be at  least the amount  specified in Section  310(a)(2) of the Trust
Indenture Act of  1939, and  will be subject  to supervision  or examination  by
federal or state authorities.
 
                                       60
<PAGE>
                  CERTAIN LEGAL ASPECTS OF THE MORTGAGE LOANS
 
    The  following  discussion contains  summaries of  certain legal  aspects of
mortgage loans  which are  general in  nature. Because  such legal  aspects  are
governed  by applicable  state law  (which laws  may differ  substantially), the
summaries do not purport to be complete or to reflect the laws of any particular
state, nor to encompass  the laws of  all states in which  the security for  the
Mortgage  Loans is  situated. The summaries  are qualified in  their entirety by
reference to the applicable federal and state laws governing the Mortgage Loans.
 
GENERAL
 
    The Mortgage Loans will, in general, be secured by either first mortgages or
first deeds of  trust, depending upon  the prevailing practice  in the state  in
which  the underlying property  is located. A  mortgage creates a  lien upon the
real property described in  the mortgage. There are  two parties to a  mortgage:
the  mortgagor, who is the borrower; and the  mortgagee, who is the lender. In a
mortgage state instrument,  the mortgagor delivers  to the mortgagee  a note  or
bond  evidencing the loan and the mortgage.  Although a deed of trust is similar
to a mortgage, a deed of trust has three parties: a borrower called the  trustor
(similar  to  a  mortgagor),  a  lender called  the  beneficiary  (similar  to a
mortgagee), and a third-party grantee called the trustee. Under a deed of trust,
the borrower grants the property, irrevocably until the debt is paid, in  trust,
generally  with a power of  sale, to the trustee to  secure payment of the loan.
The trustee's authority  under a  deed of  trust and  the mortgagee's  authority
under  a mortgage are governed by the express provisions of the deed of trust or
mortgage, applicable law, and, in some cases, with respect to the deed of trust,
the directions of the beneficiary.
 
FORECLOSURE
 
    Foreclosure of  a mortgage  is generally  accomplished by  judicial  action.
Generally,  the action is initiated  by the service of  legal pleadings upon all
parties having an interest of record in the real property. Delays in  completion
of  the  foreclosure  occasionally  may  result  from  difficulties  in locating
necessary parties  defendant.  When  the mortgagee's  right  of  foreclosure  is
contested,  the  legal  proceedings  necessary  to  resolve  the  issue  can  be
time-consuming. After the completion of  a judicial foreclosure proceeding,  the
court  may  issue a  judgment of  foreclosure  and appoint  a receiver  or other
officer to conduct the sale of the property. In some states, mortgages may  also
be  foreclosed by  advertisement, pursuant  to a power  of sale  provided in the
mortgage. Foreclosure of a mortgage  by advertisement is essentially similar  to
foreclosure of a deed of trust by non-judicial power of sale.
 
    Foreclosure  of a deed of trust  is generally accomplished by a non-judicial
trustee's sale under a specific provision  in the deed of trust that  authorizes
the  trustee to  sell the  property to  a third  party upon  any default  by the
borrower under the terms of the note  or deed of trust. In certain states,  such
foreclosure  also may be accomplished by  judicial action in the manner provided
for foreclosure of mortgages. In some  states, the trustee must record a  notice
of  default and send  a copy to the  borrower-trustor and to  any person who has
recorded a request  for a copy  of a notice  of default and  notice of sale.  In
addition, the trustee must provide notice in some states to any other individual
having  an  interest  of  record  in the  real  property,  including  any junior
lienholders. If the deed of trust  is not reinstated within any applicable  cure
period,  a notice of sale must be posted  in a public place and, in most states,
published for a specified period of time in one or more newspapers. In addition,
some state laws  require that  a copy of  the notice  of sale be  posted on  the
property and sent to all parties having an interest of record in the property.
 
    In  some states, the borrower-trustor has the right to reinstate the loan at
any time following default until shortly before the trustee's sale. In  general,
the  borrower,  or any  other person  having  a junior  encumbrance on  the real
estate, may,  during a  reinstatement period,  cure the  default by  paying  the
entire  amount in arrears plus the costs  and expenses incurred in enforcing the
obligation. Certain state laws  control the amount  of foreclosure expenses  and
costs, including attorneys' fees, which may be recovered by a lender.
 
                                       61
<PAGE>
    In  case of foreclosure under either a mortgage or a deed of trust, the sale
by the receiver  or other designated  officer, or  by the trustee,  is a  public
sale.  However, because of  the difficulty a  potential buyer at  the sale would
have in determining the exact status of title and because the physical condition
of the property may have deteriorated during the foreclosure proceedings, it  is
uncommon  for a third  party to purchase  the property at  the foreclosure sale.
Rather, it is common for the lender to purchase the property from the trustee or
receiver for an amount equal to the unpaid principal amount of the note, accrued
and unpaid interest and the expenses of foreclosure. Thereafter, subject to  the
right  of  the  borrower in  some  states  to remain  in  possession  during the
redemption period, the lender  will assume the  burdens of ownership,  including
obtaining  hazard insurance and  making such repairs  at its own  expense as are
necessary to render  the property suitable  for sale. The  lender commonly  will
obtain  the services of a real estate broker  and pay the broker a commission in
connection with the sale of the property. Depending upon market conditions,  the
ultimate  proceeds  of the  sale  of the  property  may not  equal  the lender's
investment in the property. Any loss may  be reduced by the receipt of  mortgage
insurance  proceeds, if any, or by judicial  action against the borrower for the
deficiency,  if  such  action  is  permitted  by  law.  See   "--Anti-Deficiency
Legislation and Other Limitations on Lenders" below.
 
FORECLOSURE ON SHARES OF COOPERATIVES
 
    The  cooperative shares owned  by the tenant-stockholder  and pledged to the
lender are, in  almost all  cases, subject to  restrictions on  transfer as  set
forth  in the cooperative's Certificate of Incorporation and By-laws, as well as
in the proprietary  lease or occupancy  agreement, and may  be cancelled by  the
cooperative  for  failure  by  the  tenant-stockholder  to  pay  rent  or  other
obligations or  charges owed  by such  tenant-stockholder, including  mechanics'
liens  against  the  cooperative  apartment building  incurred  by  such tenant-
stockholder. The proprietary lease or occupancy agreement generally permits  the
cooperative  to terminate such lease or agreement  in the event an obligor fails
to  make  payments  or  defaults  in  the  performance  of  covenants   required
thereunder.  Typically, the lender and the  cooperative enter into a recognition
agreement which establishes the  rights and obligations of  both parties in  the
event  of  a default  by  the tenant-stockholder  on  its obligations  under the
proprietary lease or  occupancy agreement. A  default by the  tenant-stockholder
under  the proprietary  lease or occupancy  agreement will  usually constitute a
default  under   the   security   agreement   between   the   lender   and   the
tenant-stockholder.
 
    The  recognition agreement  generally provides that,  in the  event that the
tenant-stockholder has  defaulted  under  the  proprietary  lease  or  occupancy
agreement,  the  cooperative will  take  no action  to  terminate such  lease or
agreement until the lender has been provided an opportunity to cure the default.
The recognition agreement typically  provides that if  the proprietary lease  or
occupancy  agreement is terminated, the  cooperative will recognize the lender's
lien against  proceeds  from  a  sale of  the  cooperative  apartment,  subject,
however,  to the cooperative's right to sums due under such proprietary lease or
occupancy  agreement.  The  total  amount   owed  to  the  cooperative  by   the
tenant-stockholder,  which  the lender  generally cannot  restrict and  does not
monitor, could  reduce  the  value  of  the  collateral  below  the  outstanding
principal  balance  of  the cooperative  loan  and accrued  and  unpaid interest
thereon.
 
    Recognition agreements also provide that in the event of a foreclosure on  a
cooperative  loan,  the  lender  must  obtain the  approval  or  consent  of the
cooperative as  required  by  the  proprietary  lease  before  transferring  the
cooperative  shares or assigning the proprietary lease. Generally, the lender is
not limited  by the  agreement  in any  rights it  may  have to  dispossess  the
tenant-stockholders.
 
    Foreclosure  on  the  cooperative  shares  is  accomplished  by  a  sale  in
accordance with the provisions of Article 9 of the Uniform Commercial Code  (the
"UCC") and the security agreement relating to those shares. Article 9 of the UCC
requires that a sale be conducted in a "commercially reasonable" manner. Whether
a foreclosure sale has been conducted in a "commercially reasonable" manner will
depend  on the facts  in each case. In  determining commercial reasonableness, a
court will look to  the notice given  the debtor and  the method, manner,  time,
place and terms of the foreclosure. Generally, a sale conducted according to the
usual practice of banks selling similar collateral will be considered reasonably
conducted.
 
                                       62
<PAGE>
    Article  9 of the UCC provides that the proceeds of the sale will be applied
first to  pay the  costs  and expenses  of  the sale  and  then to  satisfy  the
indebtedness   secured  by  the  lender's  security  interest.  The  recognition
agreement, however, generally provides that the lender's right to  reimbursement
is subject to the right of the cooperative corporation to receive sums due under
the  proprietary lease or occupancy agreement.  If there are proceeds remaining,
the lender must account to  the tenant-stockholder for the surplus.  Conversely,
if  a  portion of  the indebtedness  remains  unpaid, the  tenant-stockholder is
generally responsible for the  deficiency. See "Anti-Deficiency Legislation  and
Other Limitations on Lenders" below.
 
RIGHTS OF REDEMPTION
 
    In some states, after sale pursuant to a deed of trust and/or foreclosure of
a  mortgage,  the borrower  and certain  foreclosed junior  lienors are  given a
statutory period in which to redeem  the property from the foreclosure sale.  In
most states where the right of redemption is available, statutory redemption may
occur  upon  payment of  the foreclosure  purchase  price, accrued  interest and
taxes. In some states, the right to redeem is an equitable right. The effect  of
a  right  of redemption  is  to delay  the  ability of  the  lender to  sell the
foreclosed property. The  exercise of  a right  of redemption  would defeat  the
title  of any  purchaser at  a foreclosure  sale, or  of any  purchaser from the
lender subsequent  to  judicial foreclosure  or  sale  under a  deed  of  trust.
Consequently,  the  practical effect  of the  redemption right  is to  force the
lender to maintain  the property  and pay the  expenses of  ownership until  the
redemption period has run.
 
ANTI-DEFICIENCY LEGISLATION AND OTHER LIMITATIONS ON LENDERS
 
    Certain  states have imposed statutory  restrictions that limit the remedies
of a beneficiary under a deed of trust or a mortgagee under a mortgage. In  some
states,  statutes limit the  right of the  beneficiary or mortgagee  to obtain a
deficiency judgment against the borrower  following foreclosure or sale under  a
deed  of trust. A deficiency judgment is  a personal judgment against the former
borrower equal in most  cases to the  difference between the  amount due to  the
lender and the net amount realized upon the foreclosure sale.
 
    Some  state statutes may require the beneficiary or mortgagee to exhaust the
security afforded under a deed of trust or mortgage by foreclosure in an attempt
to satisfy the full debt before bringing a personal action against the borrower.
In certain other states, the lender has the option of bringing a personal action
against the  borrower  on  the  debt without  first  exhausting  such  security;
however,  in  some  of these  states,  the  lender, following  judgment  on such
personal action, may be  deemed to have  elected a remedy  and may be  precluded
from  exercising  remedies  with  respect  to  the  security.  Consequently, the
practical effect of the election  requirement, when applicable, is that  lenders
will  usually proceed first against the security rather than bringing a personal
action against the borrower.
 
    Other statutory provisions  may limit  any deficiency  judgment against  the
former  borrower following a  foreclosure sale to the  excess of the outstanding
debt over the fair market  value of the property at  the time of such sale.  The
purpose  of  these statutes  is to  prevent  a beneficiary  or a  mortgagee from
obtaining a large deficiency judgment against the former borrower as a result of
low or no bids at the foreclosure sale.
 
    In some states, exceptions to the anti-deficiency statutes are provided  for
in  certain instances where the value of the lender's security has been impaired
by acts or omissions of the borrower, for example, in the event of waste of  the
property.
 
    Generally,  Article 9 of  the UCC governs  foreclosure on cooperative shares
and the related proprietary lease or occupancy agreement and foreclosure on  the
beneficial  interest in a land trust. Some courts have interpreted Section 9-504
of the UCC to prohibit a  deficiency award unless the creditor establishes  that
the  sale of the  collateral (which, in the  case of a  Mortgage Loan secured by
shares of a cooperative, would be such shares and the related proprietary  lease
or occupancy agreement) was conducted in a commercially reasonable manner.
 
    The  Servicer is not  required under the Pooling  and Servicing Agreement to
pursue deficiency judgments on the Mortgage Loans even if permitted by law.
 
                                       63
<PAGE>
    In addition  to  anti-deficiency  and related  legislation,  numerous  other
federal  and state statutory  provisions, including the  federal bankruptcy laws
and state laws  affording relief to  debtors, may interfere  with or affect  the
ability  of a secured mortgage lender to realize upon its security. For example,
in a  Chapter 13  proceeding under  the federal  Bankruptcy Code,  when a  court
determines  that the value of  a home is less than  the principal balance of the
loan, the court may prevent a lender from foreclosing on the home, and, as  part
of the rehabilitation plan, reduce the amount of the secured indebtedness to the
value of the home as it exists at the time of the proceeding, leaving the lender
as  a general unsecured creditor  for the difference between  that value and the
amount of outstanding indebtedness.  A bankruptcy court may  grant the debtor  a
reasonable  time to cure a  payment default, and in the  case of a mortgage loan
not secured by  the debtor's principal  residence, also may  reduce the  monthly
payments  due under such mortgage loan, change  the rate of interest, reduce the
principal balance of the loan to the then-current appraised value of the related
Mortgaged Property and alter the mortgage loan repayment schedule. Certain court
decisions have applied such relief to  claims secured by the debtor's  principal
residence.  If  a  court  relieves  a  borrower's  obligation  to  repay amounts
otherwise due on a Mortgage Loan, the  Servicer will not be required to  advance
such   amounts,  and  any  loss  in  respect   thereof  will  be  borne  by  the
Certificateholders.
 
    The Internal Revenue Code of 1986, as amended, provides priority to  certain
tax  liens over  the lien of  the mortgage  or deed of  trust. The  laws of some
states provide priority to certain  tax liens over the  lien of the mortgage  or
deed  of trust. Numerous federal and  some state consumer protection laws impose
substantive  requirements  upon   mortgage  lenders  in   connection  with   the
origination, servicing and enforcement of mortgage loans. These laws include the
federal  Truth  in Lending  Act, Real  Estate  Settlement Procedures  Act, Equal
Credit Opportunity Act, Fair Credit Billing Act, Fair Credit Reporting Act,  and
related  statutes  and regulations.  These federal  laws  and state  laws impose
specific statutory liabilities  upon lenders who  originate or service  mortgage
loans and who fail to comply with the provisions of the law. In some cases, this
liability may affect assignees of the mortgage loans.
 
SOLDIERS' AND SAILORS' CIVIL RELIEF ACT AND SIMILAR LAWS
 
    Generally, under the terms of the Soldiers' and Sailors' Civil Relief Act of
1940,  as amended  (the "Relief  Act"), a  borrower who  enters military service
after the origination of such borrower's Mortgage Loan (including a borrower who
is a member of  the National Guard or  is in reserve status  at the time of  the
origination  of the Mortgage Loan and is later called to active duty) may not be
charged interest above an annual rate of 6% during the period of such borrower's
active duty status,  unless a  court orders  otherwise upon  application of  the
lender.  It  is  possible  that  such  action  could  have  an  effect,  for  an
indeterminate period of  time, on the  ability of the  Servicer to collect  full
amounts  of interest  on certain of  the Mortgage  Loans in a  Trust Estate. Any
shortfall in interest collections resulting  from the application of the  Relief
Act  could result in  losses to the  holders of the  Certificates of the related
Series. Further,  the Relief  Act  imposes limitations  which would  impair  the
ability  of the Servicer  to foreclose on  an affected Mortgage  Loan during the
borrower's period of active duty status. Thus, in the event that such a Mortgage
Loan goes  into  default, there  may  be delays  and  losses occasioned  by  the
inability  to realize upon  the Mortgaged Property in  a timely fashion. Certain
states have enacted comparable  legislation which may  interfere with or  affect
the ability of the Servicer to timely collect payments of principal and interest
on,  or to  foreclose on,  Mortgage Loans  of borrowers  in such  states who are
active or reserve members of the armed services.
 
ENVIRONMENTAL CONSIDERATIONS
 
    Under the  federal  Comprehensive Environmental  Response  Compensation  and
Liability  Act, as  amended, and  under state law  in certain  states, a secured
party which takes a deed in lieu of foreclosure, purchases a mortgaged  property
at  a foreclosure  sale or  operates a mortgaged  property may  become liable in
certain circumstances  for the  costs of  remedial action  ("Cleanup Costs")  if
hazardous  wastes or hazardous  substances have been released  or disposed of on
the property. Such Cleanup  Costs may be substantial.  It is possible that  such
Cleanup  Costs  could become  a liability  of  the Trust  Estate and  reduce the
amounts  otherwise  distributable  to  the  Certificateholders  if  a  Mortgaged
Property  securing a Mortgage  Loan became the  property of the  Trust Estate in
certain   circumstances   and   if    such   Cleanup   Costs   were    incurred.
 
                                       64
<PAGE>
Moreover, certain states by statute impose a lien for any Cleanup Costs incurred
by  such state  on the  property that is  the subject  of such  Cleanup Costs (a
"Superlien"). All subsequent  liens on  such property are  subordinated to  such
Superlien  and, in  some states, even  prior recorded liens  are subordinated to
such Superliens. In the latter states, the security interest of the Trustee in a
property that is subject to such a Superlien could be adversely affected.
 
    Traditionally, residential mortgage lenders have not taken steps to evaluate
whether hazardous wastes or hazardous substances are present with respect to any
mortgaged property prior  to the origination  of the mortgage  loan or prior  to
foreclosure or accepting a deed-in-lieu of foreclosure. Accordingly, neither the
Seller  nor  PHMC has  made such  evaluations  prior to  the origination  of the
Mortgage Loans,  nor  does either  require  that  such evaluations  be  made  by
originators  who have sold  the Mortgage Loans  to PHMC. Neither  the Seller nor
PHMC is  required to  undertake any  such evaluations  prior to  foreclosure  or
accepting  a deed-in-lieu of  foreclosure. Neither the  Seller, the Servicer nor
PHMC makes  any representations  or  warranties or  assumes any  liability  with
respect  to the absence or effect of hazardous wastes or hazardous substances on
any Mortgaged Property or any casualty resulting from the presence or effect  of
hazardous  wastes  or  hazardous substances.  See  "The  Trust Estates--Mortgage
Loans--Representations  and   Warranties"  and   "Servicing  of   the   Mortgage
Loans--Enforcement  of Due-on-Sale Clauses;  Realization Upon Defaulted Mortgage
Loans" above.
 
"DUE-ON-SALE" CLAUSES
 
    The forms  of note,  mortgage and  deed of  trust relating  to  conventional
Mortgage Loans may contain a "due-on-sale" clause permitting acceleration of the
maturity  of a loan if  the borrower transfers its  interest in the property. In
recent  years,  court  decisions  and  legislative  actions  placed  substantial
restrictions  on the right  of lenders to  enforce such clauses  in many states.
However, effective  October  15,  1982, Congress  enacted  the  Garn-St  Germain
Depository  Institutions Act of 1982 (the  "Garn Act") which purports to preempt
state laws which prohibit the enforcement of "due-on-sale" clauses by  providing
among  other matters, that  "due-on-sale" clauses in  certain loans (which loans
may include the Mortgage Loans)  made after the effective  date of the Garn  Act
are enforceable, within certain limitations as set forth in the Garn Act and the
regulations  promulgated thereunder. "Due-on-sale" clauses contained in mortgage
loans originated by  federal savings  and loan associations  or federal  savings
banks  are fully  enforceable pursuant  to regulations  of the  Office of Thrift
Supervision ("OTS"), as successor to the Federal Home Loan Bank Board ("FHLBB"),
which preempt  state  law  restrictions  on the  enforcement  of  such  clauses.
Similarly,  "due-on-sale" clauses in  mortgage loans made  by national banks and
federal  credit  unions  are  now  fully  enforceable  pursuant  to   preemptive
regulations  of the  Comptroller of the  Currency and the  National Credit Union
Administration, respectively.
 
    The  Garn  Act  created  a  limited  exemption  from  its  general  rule  of
enforceability  for  "due-on-sale" clauses  in  certain mortgage  loans ("Window
Period Loans") which were originated by non-federal lenders and made or  assumed
in  certain states ("Window Period States")  during the period, prior to October
15, 1982,  in  which that  state  prohibited the  enforcement  of  "due-on-sale"
clauses  by constitutional provision,  statute or statewide  court decision (the
"Window Period"). Though neither the Garn  Act nor the OTS regulations  actually
names  the Window Period States, the  Federal Home Loan Mortgage Corporation has
taken the  position,  in  prescribing mortgage  loan  servicing  standards  with
respect  to mortgage loans which it has purchased, that the Window Period States
were:  Arizona,  Arkansas,  California,   Colorado,  Georgia,  Iowa,   Michigan,
Minnesota,  New Mexico, Utah and Washington. Under the Garn Act, unless a Window
Period State took action by October 15,  1985, the end of the Window Period,  to
further  regulate enforcement of  "due-on-sale" clauses in  Window Period Loans,
"due-on-sale" clauses would become enforceable even in Window Period Loans. Five
of the Window Period States (Arizona, Minnesota, Michigan, New Mexico and  Utah)
have taken actions which restrict the enforceability of "due-on-sale" clauses in
Window  Period Loans beyond October 15, 1985.  The actions taken vary among such
states.
 
    By virtue  of the  Garn Act,  the  Servicer may  generally be  permitted  to
accelerate  any conventional Mortgage Loan which contains a "due-on-sale" clause
upon   transfer    of    an    interest   in    the    property    subject    to
 
                                       65
<PAGE>
the  mortgage or deed of  trust. With respect to any  Mortgage Loan secured by a
residence occupied or to be occupied by the borrower, this ability to accelerate
will not apply to certain  types of transfers, including  (i) the granting of  a
leasehold  interest which has a  term of three years or  less and which does not
contain an option to purchase, (ii) a transfer to a relative resulting from  the
death  of a borrower, or a transfer where the spouse or children become an owner
of the property in each case  where the transferee(s) will occupy the  property,
(iii)  a  transfer resulting  from a  decree of  dissolution of  marriage, legal
separation agreement  or from  an incidental  property settlement  agreement  by
which  the spouse becomes an owner of the  property, (iv) the creation of a lien
or other encumbrance subordinate to the lender's security instrument which  does
not  relate to a transfer of rights  of occupancy in the property (provided that
such lien or encumbrance is not created pursuant to a contract for deed), (v)  a
transfer  by devise, descent or operation of law  on the death of a joint tenant
or tenant by the entirety, and (vi) other transfers as set forth in the Garn Act
and the regulations thereunder. The extent of the effect of the Garn Act on  the
average  lives and delinquency rates of  the Mortgage Loans cannot be predicted.
See "Prepayment and Yield Considerations."
 
APPLICABILITY OF USURY LAWS
 
    Title V of the Depository Institutions Deregulation and Monetary Control Act
of  1980,  enacted  in  March  1980  ("Title  V"),  provides  that  state  usury
limitations shall not apply to certain types of residential first mortgage loans
originated  by certain lenders after March 31, 1980. The OTS as successor to the
FHLBB  is   authorized  to   issue  rules   and  regulations   and  to   publish
interpretations  governing implementation of Title V. The statute authorized any
state to reimpose interest rate limits by  adopting before April 1, 1983, a  law
or  constitutional provision which expressly  rejects application of the federal
law. Fifteen  states have  adopted laws  reimposing or  reserving the  right  to
reimpose  interest  rate limits.  In  addition, even  where  Title V  is  not so
rejected, any state is  authorized to adopt a  provision limiting certain  other
loan charges.
 
    The Seller will represent and warrant in the Pooling and Servicing Agreement
to the Trustee for the benefit of Certificateholders that all Mortgage Loans are
originated  in full compliance with applicable state laws, including usury laws.
See "The Pooling and  Servicing Agreement--Assignment of  Mortgage Loans to  the
Trustee."
 
ENFORCEABILITY OF CERTAIN PROVISIONS
 
    Standard  forms  of  note,  mortgage and  deed  of  trust  generally contain
provisions obligating the  borrower to  pay a late  charge if  payments are  not
timely  made  and  in some  circumstances  may  provide for  prepayment  fees or
penalties if the obligation is paid prior to maturity. In certain states,  there
are  or may be specific limitations upon late charges which a lender may collect
from a borrower for delinquent payments.  Certain states also limit the  amounts
that a lender may collect from a borrower as an additional charge if the loan is
prepaid.  Under the Pooling and Servicing Agreement, late charges and prepayment
fees (to the extent  permitted by law  and not waived by  the Servicer) will  be
retained by the Servicer as additional servicing compensation.
 
    Courts  have imposed  general equitable  principles upon  foreclosure. These
equitable principles are  generally designed  to relieve the  borrower from  the
legal effect of defaults under the loan documents. Examples of judicial remedies
that  may be fashioned  include judicial requirements  that the lender undertake
affirmative and expensive  actions to  determine the causes  for the  borrower's
default and the likelihood that the borrower will be able to reinstate the loan.
In  some cases, courts have substituted their judgment for the lender's judgment
and have required  lenders to  reinstate loans  or recast  payment schedules  to
accommodate  borrowers who are suffering from temporary financial disability. In
some cases, courts have limited the right of lenders to foreclose if the default
under the mortgage instrument is not  monetary, such as the borrower failing  to
adequately  maintain the property or the borrower executing a second mortgage or
deed of trust  affecting the  property. In other  cases, some  courts have  been
faced  with  the  issue  whether  federal  or  state  constitutional  provisions
reflecting due process concerns for adequate notice require that borrowers under
the deeds of  trust receive  notices in addition  to the  statutorily-prescribed
minimum requirements. For
 
                                       66
<PAGE>
the most part, these cases have upheld the notice provisions as being reasonable
or  have found  that the  sale by  a trustee under  a deed  of trust  or under a
mortgage having a  power of  sale does not  involve sufficient  state action  to
afford constitutional protections to the borrower.
 
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    The  following is a  general discussion of  the anticipated material federal
income  tax  consequences  of  the  purchase,  ownership,  and  disposition   of
Certificates,  which may consist of REMIC Certificates, Standard Certificates or
Stripped Certificates, as described below. The discussion below does not purport
to address  all  federal income  tax  consequences  that may  be  applicable  to
particular  categories of  investors, some  of which  may be  subject to special
rules. The authorities on which this  discussion is based are subject to  change
or  differing interpretations, and any such change or interpretation could apply
retroactively. This discussion reflects the enactment  of the Tax Reform Act  of
1986  (the "1986 Act") and  the Technical and Miscellaneous  Revenue Act of 1988
("TAMRA"), as well  as proposed regulations  (the "Proposed REMIC  Regulations")
promulgated  by  the U.S.  Department  of the  Treasury  on September  27, 1991.
Investors should be  aware that the  Proposed REMIC Regulations  are subject  to
change  and  are  not binding  authority  until  adopted as  final  or temporary
regulations. However, to the extent  adopted as currently drafted, the  Proposed
REMIC  Regulations may apply to the  REMIC Certificates retroactively as binding
authority. Investors should consult  their own tax  advisors in determining  the
federal,  state, local, and any other tax  consequences to them of the purchase,
ownership, and disposition of Certificates, particularly with respect to federal
income tax  changes effected  by the  1986  Act, TAMRA  and the  Proposed  REMIC
Regulations.
 
    For  purposes of this discussion, where the applicable Prospectus Supplement
provides for a  Fixed Retained Yield  with respect  to the Mortgage  Loans of  a
Series of Certificates, references to the Mortgage Loans will be deemed to refer
to  that portion of the  Mortgage Loans held by the  Trust Estate which does not
include the Fixed Retained Yield.
 
             FEDERAL INCOME TAX CONSEQUENCES FOR REMIC CERTIFICATES
 
GENERAL
 
    With respect to a particular Series of Certificates, an election may be made
to treat the Trust Estate or one  or more segregated pools of assets therein  as
one  or more REMICs within the meaning of Code Section 860D. A Trust Estate or a
portion or portions thereof as to which one or more REMIC elections will be made
will be  referred  to  as a  "REMIC  Pool."  For purposes  of  this  discussion,
Certificates of a Series as to which one or more REMIC elections are made, which
will  include all Multi-Class Certificates and may include Standard Certificates
or Stripped Certificates or  both, are referred to  as "REMIC Certificates"  and
will  consist of one or more Classes  of "Regular Certificates" and one Class of
"Residual Certificates" in the case of each REMIC Pool. Qualification as a REMIC
requires ongoing compliance with certain conditions. With respect to each Series
of REMIC Certificates, Cadwalader, Wickersham & Taft, counsel to the Seller, has
advised the Seller that  in the firm's  opinion, assuming (i)  the making of  an
appropriate  election, (ii) compliance with the Pooling and Servicing Agreement,
and (iii) compliance with  any changes in the  law, including any amendments  to
the  Code or  applicable Treasury regulations  thereunder, each  REMIC Pool will
qualify as a REMIC. In such case, the Regular Certificates will be considered to
be "regular  interests" in  the REMIC  Pool and  generally will  be treated  for
federal  income tax purposes as if  they were newly originated debt instruments,
and the Residual Certificates will be  considered to be "residual interests"  in
the  REMIC Pool. The Prospectus Supplement  for each Series of Certificates will
indicate whether one or more REMIC  elections with respect to the related  Trust
Estate will be made, in which event references to "REMIC" or "REMIC Pool" herein
shall be deemed to refer to each such REMIC Pool.
 
STATUS OF REMIC CERTIFICATES
 
    REMIC  Certificates held by a mutual savings bank or a domestic building and
loan association will  constitute "qualifying  real property  loans" within  the
meaning of Code Section 593(d)(1) in the same
 
                                       67
<PAGE>
proportion  that  the  assets of  the  REMIC  Pool would  be  so  treated. REMIC
Certificates held by a domestic building and loan association will constitute "a
regular or residual  interest in  a REMIC" within  the meaning  of Code  Section
7701(a)(19)(C)(xi)  in the  same proportion  that the  assets of  the REMIC Pool
would be treated as "loans...secured by an interest in real property" within the
meaning of Code Section 7701(a)(19)(C)(v) or  as other assets described in  Code
Section  7701(a)(19)(C).  REMIC Certificates  held by  a real  estate investment
trust will constitute "real  estate assets" within the  meaning of Code  Section
856(c)(5)(A),  and  interest  on  the  REMIC  Certificates  will  be  considered
"interest on obligations secured by mortgages  on real property or on  interests
in  real property" within the  meaning of Code Section  856(c)(3)(B) in the same
proportion that, for both  purposes, the assets  of the REMIC  Pool would be  so
treated. If at all times 95% or more of the assets of the REMIC Pool qualify for
each  of the foregoing  treatments, the REMIC Certificates  will qualify for the
corresponding status in their entirety.  The Proposed REMIC Regulations  provide
that,  for purposes  of Code  Sections 593(d)(1)  and 856(c)(5)(A),  payments of
principal and  interest  on  the  Mortgage Loans  that  are  reinvested  pending
distribution  to holders of REMIC Certificates qualify for such treatment. Where
two REMIC Pools are  a part of a  tiered structure they will  be treated as  one
REMIC  for purposes of  the tests described above  respecting asset ownership of
more or less than 95%. In addition, if the assets of the REMIC include  Buy-Down
Loans,   it  is  possible  that  the  percentage  of  such  assets  constituting
"qualifying real  property loans"  or "loans...secured  by an  interest in  real
property"  for  purposes  of  Code  Sections  593(d)(1)  and  7701(a)(19)(C)(v),
respectively, may  be  required to  be  reduced by  the  amount of  the  related
Buy-Down  Funds. REMIC Certificates held by  a regulated investment company will
not constitute  "Government  securities"  within the  meaning  of  Code  Section
851(b)(4)(A)(i).  REMIC Certificates held by certain financial institutions will
constitute an  "evidence of  indebtedness" within  the meaning  of Code  Section
582(c)(1).
 
QUALIFICATION AS A REMIC
 
    In  order for the  REMIC Pool to qualify  as a REMIC,  there must be ongoing
compliance on the part of the REMIC Pool with the requirements set forth in  the
Code.  The REMIC Pool  must fulfill an  asset test, which  requires that no more
than a DE MINIMIS portion of  the assets of the REMIC  Pool, as of the close  of
the  third calendar month beginning after  the "Startup Day" (which for purposes
of this discussion is the date of issuance of the REMIC Certificates) and at all
times thereafter, may  consist of  assets other than  "qualified mortgages"  and
"permitted  investments."  The Proposed  REMIC Regulations  provide that  the DE
MINIMIS requirement is met if at all  times the aggregate adjusted basis of  the
nonqualified  assets is less than 1% of  the aggregate adjusted basis of all the
REMIC Pool's  assets.  An  entity  that  fails  to  meet  the  safe  harbor  may
nevertheless  demonstrate that  it holds  no more  than a  DE MINIMIS  amount of
nonqualified assets.
 
    A qualified mortgage  is any obligation  that is principally  secured by  an
interest  in real property and  that is either transferred  to the REMIC Pool on
the Startup Day or is  purchased by the REMIC  Pool within a three-month  period
thereafter  pursuant to  a fixed  price contract in  effect on  the Startup Day.
Qualified mortgages include whole  mortgage loans, such  as the Mortgage  Loans,
and,  generally, certificates  of beneficial  interest in  a grantor  trust that
holds mortgage  loans  and  regular  interests in  another  REMIC.  A  qualified
mortgage  includes a qualified replacement mortgage,  which is any property that
would have been treated as  a qualified mortgage if  it were transferred to  the
REMIC  Pool on the Startup  Day and that is received  either (i) in exchange for
any qualified  mortgage  within  a  three-month period  thereafter  or  (ii)  in
exchange  for a  "defective obligation" within  a two-year  period thereafter. A
"defective obligation" includes (i) a mortgage in default or as to which default
is  reasonably  foreseeable,   (ii)  a   mortgage  as  to   which  a   customary
representation  or warranty made at  the time of transfer  to the REMIC Pool has
been breached, (iii) a mortgage that was fraudulently procured by the mortgagor,
and (iv) a mortgage that  was not in fact  principally secured by real  property
(but  only  if such  mortgage is  disposed of  within 90  days of  discovery). A
Mortgage Loan that is "defective" as described  in clause (iv) that is not  sold
or,  if  within  two years  of  the Startup  Day,  exchanged within  90  days of
discovery, ceases to be a qualified mortgage after such 90-day period.
 
    Permitted investments  include  cash  flow  investments,  qualified  reserve
assets,  and foreclosure  property. A cash  flow investment is  an investment of
amounts   received    on    or    with   respect    to    qualified    mortgages
 
                                       68
<PAGE>
for  a  temporary period,  not  exceeding 13  months,  until the  next scheduled
distribution to holders of interests in the REMIC Pool, and such investment must
earn a  return in  the nature  of interest.  A qualified  reserve asset  is  any
intangible  property held for investment that is part of any reasonably required
reserve maintained by the REMIC Pool to provide for payments of expenses of  the
REMIC  Pool or to provide additional security for payments due on the regular or
residual interests that otherwise  may be delayed or  defaulted upon because  of
default  (including  delinquencies) on  the  qualified mortgages  or  lower than
expected reinvestment returns. It is currently unclear whether reserve funds for
other purposes (such as a reserve fund  in connection with the use of  graduated
payment mortgages) constitute qualified reserve assets. The reserve fund will be
disqualified  if more than 30% of the gross  income from the assets in such fund
for the year is derived from the sale or other disposition of property held  for
less  than three  months, unless  required to prevent  a default  on the regular
interests caused by a default on one or more qualified mortgages. A reserve fund
must be reduced "promptly and appropriately"  as payments on the Mortgage  Loans
are  received. Foreclosure property is real  property acquired by the REMIC Pool
in connection with the default or  imminent default of a qualified mortgage  and
generally held for not more than two years, with possible extensions.
 
    In  addition to the foregoing requirements, the various interests in a REMIC
Pool also must meet certain requirements. All  of the interests in a REMIC  Pool
must be either of the following: (i) one or more classes of regular interests or
(ii)  a single class of  residual interests on which  distributions, if any, are
made pro rata. A regular interest is an interest in a REMIC Pool that is  issued
on  the Startup Day with  fixed terms, is designated  as a regular interest, and
unconditionally entitles the holder to receive a specified principal amount  (or
other  similar amount),  and provides that  interest payments  (or other similar
amounts), if any, at or before maturity either are payable based on a fixed rate
or a qualified variable rate, or  consist of a specified, nonvarying portion  of
the   interest  payments  on  qualified  mortgages.  Under  the  Proposed  REMIC
Regulations, the specified principal amount of a regular interest that  provides
for  interest payments consisting of a specified, nonvarying portion of interest
payments on qualified mortgages may be zero. A residual interest is an  interest
in  a REMIC Pool other than a regular interest that is issued on the Startup Day
and that is designated  as a residual interest.  The Proposed REMIC  Regulations
provide  that an interest in  a REMIC Pool may be  treated as a regular interest
even if payments of principal with respect to such interest are subordinated  to
payments  on other regular interests or the residual interest in the REMIC Pool,
and are  dependent on  the absence  of defaults  or delinquencies  on  qualified
mortgages  or permitted investments,  lower than reasonably  expected returns on
permitted investments,  expenses  incurred  by  the  REMIC  Pool  or  prepayment
interest  shortfalls.  Accordingly, the  Regular Certificates  of a  Series will
constitute  one  or  more  classes  of  regular  interests,  and  the   Residual
Certificates  with  respect to  that Series  will constitute  a single  class of
residual interests on which distributions are made pro rata.
 
    If an entity, such as  the REMIC Pool, fails to  comply with one or more  of
the  ongoing requirements of the Code for  REMIC status during any taxable year,
the Code provides that the entity will not  be treated as a REMIC for such  year
and  thereafter. In  this event,  an entity  with multiple  classes of ownership
interests may be  treated as  a separate  association taxable  as a  corporation
under  Treasury  regulations, and  the Regular  Certificates  may be  treated as
equity interests therein. The Code, however, authorizes the Treasury  Department
to  issue regulations that address situations where  failure to meet one or more
of the requirements for REMIC status occurs inadvertently and in good faith, and
disqualification of  the  REMIC  Pool  would  occur  absent  regulatory  relief.
Investors  should be aware, however, that the Conference Committee Report to the
1986 Act indicates that the relief may be accompanied by sanctions, such as  the
imposition of a corporate tax on all or a portion of the REMIC Pool's income for
the period of time in which the requirements for REMIC status are not satisfied.
 
TAXATION OF REGULAR CERTIFICATES
 
  GENERAL
 
    In  general, interest,  original issue  discount, and  market discount  on a
Regular Certificate  will be  treated as  ordinary  income to  a holder  of  the
Regular Certificate (the "Regular Certificateholder"), and principal payments on
a  Regular Certificate will be  treated as a return of  capital to the extent of
the Regular
 
                                       69
<PAGE>
Certificateholder's basis in the Regular Certificate allocable thereto.  Regular
Certificateholders  must use  the accrual  method of  accounting with  regard to
Regular Certificates, regardless of the  method of accounting otherwise used  by
such Regular Certificateholders.
 
  ORIGINAL ISSUE DISCOUNT
 
    Compound  Interest  Certificates  will  be,  and  other  classes  of Regular
Certificates may be, issued with "original issue discount" within the meaning of
Code Section 1273(a). Holders of any  Class or Subclass of Regular  Certificates
having original issue discount generally must include original issue discount in
ordinary  income for  federal income tax  purposes as it  accrues, in accordance
with a  constant interest  method that  takes into  account the  compounding  of
interest,  in advance of  receipt of the  cash attributable to  such income. The
following discussion is  based in  part on proposed  Treasury regulations  under
Code Sections 1271 through 1273 and 1275 (the "Proposed OID Regulations") and in
part  on the  provisions of the  1986 Act. Regular  Certificateholders should be
aware, however,  that the  Proposed OID  Regulations do  not adequately  address
certain   issues  relevant  to  prepayable   securities,  such  as  the  Regular
Certificates, and are  subject to change  and are not  binding authority  before
being  adopted as final or temporary regulations. However, to the extent adopted
as currently drafted,  the Proposed  OID Regulations  may apply  to the  Regular
Certificates retroactively as binding authority.
 
    Under the Proposed OID Regulations, each Regular Certificate will be treated
as  a single  installment obligation  for purposes  of determining  the original
issue discount includible  in a  Regular Certificateholder's  income. The  total
amount  of original issue discount on a Regular Certificate is the excess of the
"stated redemption price at maturity" of the Regular Certificate over its "issue
price." The  issue price  of  a Regular  Certificate is  the  price at  which  a
substantial  amount of Regular Certificates of that  Class are first sold to the
public. The issue price of a  Regular Certificate also includes the amount  paid
by  an initial Regular Certificateholder for  accrued interest that relates to a
period prior to the issue date of the Regular Certificate. The stated redemption
price at  maturity  of  a  Regular  Certificate  always  includes  the  original
principal  amount  of (in  the  case of  Standard  or Stripped  Certificates) or
initial Stated Amount of (in the  case of Multi-Class Certificates) the  Regular
Certificate,  but generally will not include distributions of stated interest if
such interest distributions constitute  "qualified periodic interest  payments."
Under  the  Proposed  OID  Regulations, a  qualified  periodic  interest payment
generally means interest payable at a single fixed rate or a qualified  variable
rate  (as described below) provided that such interest payments are actually and
unconditionally payable at fixed, periodic intervals of one year or less  during
the  entire  term of  the Regular  Certificate. Distributions  of interest  on a
Compound Interest Certificate, or on other Regular Certificates with respect  to
which  deferred  interest will  accrue,  may not  constitute  qualified periodic
interest payments, in which case the stated redemption price at maturity of such
Regular Certificates includes all distributions of interest as well as principal
thereon. Moreover,  if  the  interval  between the  issue  date  and  the  first
Distribution  Date on a Regular Certificate  is longer than the interval between
subsequent Distribution Dates, the Internal  Revenue Service could contend  that
the initial interval should be divided into a short accrual period followed by a
period  corresponding to the interval between subsequent Distribution Dates, and
that because no  distribution of interest  is made  on the date  that the  short
accrual   period  ends,  the  stated  interest  distributions  on  such  Regular
Certificate do not constitute qualified periodic interest payments. Accordingly,
the Internal  Revenue  Service could  contend  that all  distributions  on  such
Regular  Certificate  should be  includible in  the  stated redemption  price at
maturity, or that some other adjustment  should be made. Furthermore, a  portion
of  the interest distributed  on the first  Distribution Date may  be treated as
nonqualified periodic  interest includible  in the  stated redemption  price  at
maturity to the extent such interest distribution is attributable to a period in
excess  of the number of days between the issue date and such first Distribution
Date. Regular  Certificateholders  should  consult their  own  tax  advisors  to
determine  the issue price and stated redemption  price at maturity of a Regular
Certificate.
 
    Under a DE MINIMIS  rule, original issue discount  on a Regular  Certificate
will be considered to be zero if such original issue discount is less than 0.25%
of the stated redemption price at maturity of the Regular Certificate multiplied
by  the weighted average maturity of  the Regular Certificate. For this purpose,
the
 
                                       70
<PAGE>
weighted average maturity of the Regular  Certificate is computed as the sum  of
the  amounts determined by multiplying the  number of full years (I.E., rounding
down partial years) from the issue date until each distribution in reduction  of
stated  redemption price at maturity is scheduled  to be made by a fraction, the
numerator of which  is the amount  of each distribution  included in the  stated
redemption  price at maturity of the  Regular Certificate and the denominator of
which is the  stated redemption price  at maturity of  the Regular  Certificate.
Although  currently unclear, it appears that  the schedule of such distributions
should be determined in  accordance with the assumed  rate of prepayment of  the
Mortgage  Loans and the  anticipated reinvestment rate, if  any, relating to the
Regular Certificates (the  "Prepayment Assumption").  The Prepayment  Assumption
with  respect  to a  Series of  Regular Certificates  will be  set forth  in the
related Prospectus Supplement.
 
    A Regular Certificateholder generally must  include in gross income for  any
taxable  year the sum of the "daily portions," as defined below, of the original
issue discount on the Regular Certificate  accrued during an accrual period  for
each  day  on which  it holds  the  Regular Certificate,  including the  date of
purchase but excluding the  date of disposition. Although  not free from  doubt,
the  Seller intends to treat the monthly period ending on each Distribution Date
as the accrual period, rather than the monthly period corresponding to the prior
calendar month. With respect to each Regular Certificate, a calculation will  be
made  of the  original issue discount  that accrues during  each successive full
accrual period (or shorter period from the date of original issue) that ends  on
the  related  Distribution  Date  on  the  Regular  Certificate.  The Conference
Committee Report to the  1986 Act states  that the rate  of accrual of  original
issue  discount  is  intended to  be  based  on the  Prepayment  Assumption. The
original issue discount accruing in a  full accrual period would be the  excess,
if  any,  of (i)  the sum  of  (a) the  present value  of  all of  the remaining
distributions to  be made  on the  Regular Certificate  as of  the end  of  that
accrual period, and (b) the distributions made on the Regular Certificate during
the  accrual  period  that  are included  in  the  Regular  Certificate's stated
redemption price at maturity, over (ii) the adjusted issue price of the  Regular
Certificate  at the beginning  of the accrual  period. The present  value of the
remaining distributions  referred to  in the  preceding sentence  is  calculated
based on (i) the yield to maturity of the Regular Certificate at the issue date,
(ii)  events (including actual prepayments) that  have occurred prior to the end
of the accrual period, and (iii) the Prepayment Assumption. For these  purposes,
the  adjusted  issue price  of a  Regular  Certificate at  the beginning  of any
accrual period equals the issue price  of the Regular Certificate, increased  by
the  aggregate amount  of original  issue discount  with respect  to the Regular
Certificate that accrued in all prior accrual periods and reduced by the  amount
of  distributions included in the  Regular Certificate's stated redemption price
at maturity that were made on the Regular Certificate in such prior periods. The
original issue discount  accruing during  any accrual period  (as determined  in
this  paragraph) will  then be divided  by the number  of days in  the period to
determine the  daily portion  of original  issue discount  for each  day in  the
period.  With respect to an  initial accrual period shorter  than a full accrual
period, the  daily  portions  of  original issue  discount  must  be  determined
according  to an  appropriate allocation  under either  an exact  or approximate
method set  forth in  the  Proposed OID  Regulations  or some  other  reasonable
method,  provided  that  such  method  is consistent  with  the  method  used to
determine the yield to maturity of the Regular Certificate.
 
    Under the  method described  above,  the daily  portions of  original  issue
discount  required  to  be included  in  income by  a  Regular Certificateholder
generally will  increase  to  take  into  account  prepayments  on  the  Regular
Certificates  as a result of  prepayments on the Mortgage  Loans that exceed the
Prepayment Assumption, and generally will decrease  (but not below zero for  any
period)  if the  prepayments are slower  than the Prepayment  Assumption. To the
extent specified  in  the  applicable  Prospectus  Supplement,  an  increase  in
prepayments  on  the  Mortgage  Loans  with  respect  to  a  Series  of  Regular
Certificates can result in both a  change in the priority of principal  payments
with  respect to certain Classes of  Regular Certificates and either an increase
or decrease in  the daily portions  of original issue  discount with respect  to
such Regular Certificates.
 
    A  purchaser of a Regular  Certificate at a price  greater than its "revised
issue price," as defined below, will be required to include in gross income  the
daily    portions   of   the   original    issue   discount   on   the   Regular
 
                                       71
<PAGE>
Certificate reduced pro rata by a fraction, the numerator of which is the excess
of its purchase price over such revised issue price and the denominator of which
is the remaining original issue discount.  The revised issue price of a  Regular
Certificate  is  the sum  of its  original  issue price  and the  original issue
discount that would have been previously accrued by an original holder less  any
prior distributions included in the stated redemption price at maturity.
 
  VARIABLE RATE REGULAR CERTIFICATES
 
    Regular  Certificates may  provide for  interest based  on a  variable rate.
Under the  Proposed  OID  Regulations, a  qualified  periodic  interest  payment
includes any one of a series of payments equal to the product of the outstanding
principal  balance of a Regular Certificate and a variable rate tied to a single
objective index of market interest  rates, provided that such interest  payments
are  actually and  unconditionally payable at  fixed, periodic  intervals of one
year or less during the entire term of the Regular Certificate. In the case of a
Regular Certificate, however, that pays interest based on a combination of fixed
or qualifying variable rates  or at a  variable rate that is  subject to one  or
more maximum rate ceilings or certain other adjustments, it is unclear under the
Proposed OID Regulations whether interest payments on such a Regular Certificate
constitute   qualified  periodic  interest  payments,   or  instead  are  either
includible in the stated redemption price at maturity of the Regular Certificate
or treated as contingent interest payments  includible in income as they  become
fixed.  Further, the Proposed REMIC Regulations generally provide that a Regular
Certificate (i)  bearing a  floating rate  tied to  an objective  index (or  the
highest,  lowest or average of two or more objective indices) of market interest
rates (including  a rate  based on  the average  cost of  funds of  one or  more
financial  institutions) or that represents a  weighted average of rates on some
or all of  the Mortgage  Loans that  bear either a  fixed rate  or a  qualifying
variable  rate, including  such a rate  that is subject  to one or  more caps or
floors, or (ii) bearing one  or more such qualifying  variable rates for one  or
more periods, or one or more fixed rates for one or more periods, qualifies as a
regular interest in a REMIC.
 
    The  amount of original issue discount with respect to a Regular Certificate
bearing a variable rate  of interest will accrue  in the manner described  above
under  "Original Issue Discount," with the yield to maturity and future payments
on such Regular Certificate to be determined by assuming that the interest  rate
index  applicable to the first Distribution Date remains constant throughout the
life of the Regular Certificate. Ordinary income reportable for any period  will
be  adjusted based on subsequent changes  in the applicable interest rate index.
Where the issue price  of a Regular Certificate  exceeds the original  principal
amount  or Stated Amount  of the Regular Certificate,  it appears appropriate to
reduce the ordinary income reportable for an accrual period by a portion of such
excess in a manner  similar to the  amortization of premium  on the level  yield
method.  Absent clarification, original  issue discount will  be reported to the
Internal Revenue Service and to holders of variable rate Regular Certificates in
the manner described in this paragraph using the Prepayment Assumption.
 
    In the  case of  Regular Certificates  bearing an  interest rate  that is  a
weighted  average of the net interest  rates on Mortgage Loans having adjustable
rates, the applicable index  used to compute interest  on the Mortgage Loans  in
effect  on the issue date (or possibly the pricing date) will be deemed to be in
effect beginning with the period in which the first weighted average  adjustment
date  occurring after the issue date occurs. If the Pass-Through Rate for one or
more periods is less  than it would  be based upon the  fully indexed rate,  the
excess  of the  interest payments projected  at the assumed  index over interest
projected at such  initial rate may  be treated as  original issue discount.  In
such  case, a  Regular Certificateholder may  have ordinary income  in excess of
interest received at the initial Pass-Through Rate. An adjustment would be  made
in  each period  either increasing or  decreasing the amount  of ordinary income
reportable to reflect the actual  Pass-Through Rate on the Regular  Certificate.
Unless  and until clarified by applicable  Treasury regulations, the Seller does
not intend to report such excess as original issue discount.
 
  MARKET DISCOUNT
 
    A purchaser  of a  Regular Certificate  also may  be subject  to the  market
discount  rules of Code Sections 1276 through 1278. Under these sections and the
principles applied by the Proposed OID
 
                                       72
<PAGE>
Regulations in the context of original issue discount, "market discount" is  the
amount by which the purchaser's original basis in the Regular Certificate (i) is
exceeded  by the  then-current principal amount  of the  Regular Certificate, or
(ii) in the  case of a  Regular Certificate having  original issue discount,  is
exceeded  by the revised issue price of  such Regular Certificate at the time of
purchase, as  described above.  Such  purchaser generally  will be  required  to
recognize  ordinary  income to  the extent  of accrued  market discount  on such
Regular Certificate as distributions includible  in the stated redemption  price
at  maturity  thereof  are  received,  in  an  amount  not  exceeding  any  such
distribution. Such market discount  would accrue in a  manner to be provided  in
Treasury regulations and should take into account the Prepayment Assumption. The
Conference Committee Report to the 1986 Act provides that until such regulations
are  issued, such  market discount  would accrue  either (i)  on the  basis of a
constant interest rate, or (ii) in the ratio of stated interest allocable to the
relevant period to the sum  of the interest for  such period plus the  remaining
interest  as of the end of such period,  or in the case of a Regular Certificate
issued with original  issue discount, in  the ratio of  original issue  discount
accrued  for  the relevant  period to  the  sum of  the original  issue discount
accrued for such period plus the remaining original issue discount as of the end
of such  period. Such  purchaser also  generally  will be  required to  treat  a
portion of any gain on a sale or exchange of the Regular Certificate as ordinary
income  to the extent of the market  discount accrued to the date of disposition
under one of the foregoing methods, less any accrued market discount  previously
reported  as ordinary income as partial distributions in reduction of the stated
redemption price at maturity were received.  Such purchaser will be required  to
defer  deduction of a portion  of the excess of the  interest paid or accrued on
indebtedness incurred  to  purchase or  carry  a Regular  Certificate  over  the
interest distributable thereon. The deferred portion of such interest expense in
any  taxable year generally will  not exceed the accrued  market discount on the
Regular Certificate for  such year. Any  such deferred interest  expense is,  in
general,  allowed as a  deduction not later  than the year  in which the related
market discount income is recognized or the Regular Certificate is disposed  of.
As an alternative to the inclusion of market discount in income on the foregoing
basis,  the Regular  Certificateholder may elect  to include  market discount in
income currently as it  accrues on all market  discount instruments acquired  by
such Regular Certificateholder in that taxable year or thereafter, in which case
the interest deferral rule will not apply.
 
    By  analogy to the Proposed OID Regulations, market discount with respect to
a Regular Certificate will be considered to  be zero if such market discount  is
less  than 0.25% of  the remaining stated  redemption price at  maturity of such
Regular Certificate multiplied by the  weighted average maturity of the  Regular
Certificate  (determined  as  described  above  in  the  fourth  paragraph under
"Original Issue  Discount")  remaining  after the  date  of  purchase.  Treasury
regulations implementing the market discount rules have not yet been issued, and
therefore  investors  should  consult  their  own  tax  advisors  regarding  the
application of these  rules as well  as the  advisability of making  any of  the
elections with respect thereto.
 
  PREMIUM
 
    A  Regular Certificate purchased at a cost greater than its remaining stated
redemption price  at maturity  generally  is considered  to  be purchased  at  a
premium.  If the Regular  Certificateholder holds such  Regular Certificate as a
"capital  asset"  within  the  meaning   of  Code  Section  1221,  the   Regular
Certificateholder  may elect  under Code  Section 171  to amortize  such premium
under the constant interest method. The Conference Committee Report to the  1986
Act  indicates a Congressional intent that the same rules that will apply to the
accrual of  market  discount  on  installment obligations  will  also  apply  to
amortizing  bond premium under Code Section  171 on installment obligations such
as the Regular Certificates, although it is unclear whether the alternatives  to
the  constant  interest  method  described  above  under  "Market  Discount" are
available. Amortizable bond  premium will be  treated as an  offset to  interest
income on a Regular Certificate, rather than as a separate deduction item.
 
  SALE OR EXCHANGE OF REGULAR CERTIFICATES
 
    If a Regular Certificateholder sells or exchanges a Regular Certificate, the
Regular  Certificateholder will recognize gain or  loss equal to the difference,
if any,  between the  amount received  and  its adjusted  basis in  the  Regular
Certificate.  The adjusted basis  of a Regular  Certificate generally will equal
the cost of the
 
                                       73
<PAGE>
Regular Certificate to the seller, increased  by any original issue discount  or
market discount previously included in the seller's gross income with respect to
the Regular Certificate and reduced by amounts included in the stated redemption
price  at maturity of  the Regular Certificate that  were previously received by
the seller and by any amortized premium.
 
    Except as described  above with respect  to market discount,  and except  as
provided  in this  paragraph, any  gain or  loss on  the sale  or exchange  of a
Regular Certificate realized by an investor who holds the Regular Certificate as
a capital asset will be capital gain or loss and will be long-term or short-term
depending on whether  the Regular Certificate  has been held  for the  long-term
capital  gain  holding period  (currently, more  than one  year). Gain  from the
disposition of a Regular Certificate that  might otherwise be capital gain  will
be  treated as ordinary income to the extent  that such gain does not exceed the
excess, if any, of (i) the amount  that would have been includible in the  gross
income  of the holder if his yield on  such Regular Certificate were 110% of the
applicable Federal rate under Code Section  1274(d) as of the date of  purchase,
over  (ii) the amount of income actually  includible in the gross income of such
holder with  respect to  the  Regular Certificate.  In  addition, gain  or  loss
recognized  from the sale  of a Regular  Certificate by certain  banks or thrift
institutions will be treated as ordinary income or loss pursuant to Code Section
582(c). The  preferential  rates  applicable to  long-term  capital  gains  were
eliminated  by the  1986 Act.  However, the  Revenue Reconciliation  Act of 1990
restored a preferential rate applicable to long-term capital gains with  respect
to certain individuals.
 
TAXATION OF RESIDUAL CERTIFICATES
 
  TAXATION OF REMIC INCOME
 
    Generally,  the "daily portions" of REMIC taxable income or net loss will be
includible as ordinary income or loss in determining the federal taxable  income
of  holders of Residual Certificates ("Residual Holders"), and will not be taxed
separately to the REMIC Pool. The daily portions of REMIC taxable income or  net
loss  of a Residual Holder are determined by allocating the REMIC Pool's taxable
income or net loss for each calendar quarter ratably to each day in such quarter
and by allocating such daily portion among the Residual Holders in proportion to
their respective holdings  of Residual Certificates  in the REMIC  Pool on  such
day.  REMIC taxable  income is  generally determined in  the same  manner as the
taxable income of an individual using  the accrual method of accounting,  except
that  (i) the  limitation on  deductibility of  investment interest  expense and
expenses for the production of income do  not apply, (ii) all bad loans will  be
deductible  as business bad debts, and (iii) the limitation on the deductibility
of interest and expenses related to tax-exempt income will apply. REMIC  taxable
income  generally  means  the  REMIC Pool's  gross  income,  including interest,
original issue  discount income,  and market  discount income,  if any,  on  the
Mortgage  Loans, plus income  on reinvestment of cash  flows and reserve assets,
minus deductions, including interest and original issue discount expense on  the
Regular   Certificates,  servicing  fees   on  the  Mortgage   Loans  and  other
administrative expenses of the REMIC Pool, and amortization of premium, if  any,
with respect to the Mortgage Loans. The requirement that Residual Holders report
their  pro rata  share of  taxable income  or net  loss of  the REMIC  Pool will
continue until there  are no  Certificates of any  class of  the related  Series
outstanding.
 
    The  taxable income recognized by a Residual Holder in any taxable year will
be affected by,  among other  factors, the  relationship between  the timing  of
recognition of interest and original issue discount or market discount income or
amortization of premium with respect to the Mortgage Loans, on the one hand, and
the timing of deductions for interest (including original issue discount) on the
Regular  Certificates, on the other  hand. In the event  that an interest in the
Mortgage Loans is acquired by the REMIC Pool  at a discount, and one or more  of
such Mortgage Loans is prepaid, the Residual Holder may recognize taxable income
without being entitled to receive a corresponding amount of cash because (i) the
prepayment may be used in whole or in part to make distributions in reduction of
principal or Stated Amount on the Regular Certificates, and (ii) the discount on
the  Mortgage  Loans which  is  includible in  income  may exceed  the deduction
allowed upon such distributions on those Regular Certificates on account of  any
unaccrued  original issue discount relating  to those Regular Certificates. When
there is more than one Class of Regular
 
                                       74
<PAGE>
Certificates that distribute principal or payments in reduction of Stated Amount
sequentially, this mismatching of income  and deductions is particularly  likely
to  occur in the early years following issuance of the Regular Certificates when
distributions in  reduction of  principal or  Stated Amount  are being  made  in
respect  of  earlier Classes  of Regular  Certificates to  the extent  that such
Classes are not issued with substantial discount. If taxable income attributable
to such a mismatching is realized, in general, losses would be allowed in  later
years  as distributions on  the later Classes of  Regular Certificates are made.
Taxable income may also  be greater in  earlier years than in  later years as  a
result  of the fact that interest  expense deductions, expressed as a percentage
of the outstanding principal  amount of such a  Series of Regular  Certificates,
may  increase over  time as  distributions in  reduction of  principal or Stated
Amount are made on the lower  yielding Classes of Regular Certificates,  whereas
interest  income with  respect to any  given Mortgage Loan  will remain constant
over time as  a percentage  of the outstanding  principal amount  of that  loan.
Consequently, Residual Holders must have sufficient other sources of cash to pay
any federal, state, or local income taxes due as a result of such mismatching or
unrelated  deductions  against  which  to offset  such  income,  subject  to the
discussion  of  "excess  inclusions"  below  under  "Limitations  on  Offset  or
Exemption  of  REMIC  Income." The  timing  of  such mismatching  of  income and
deductions described in this paragraph, if  present with respect to a Series  of
Certificates,  may have a significant adverse  effect upon the Residual Holder's
after-tax rate of return. In addition, a Residual Holder's taxable income during
certain periods may exceed the income reflected by such Residual Holder for such
periods in accordance with  generally accepted accounting principles.  Investors
should  consult  their own  accountants concerning  the accounting  treatment of
their investment in Residual Certificates.
 
  BASIS AND LOSSES
 
    The amount of any net loss of the REMIC Pool that may be taken into  account
by  the  Residual  Holder is  limited  to  the adjusted  basis  of  the Residual
Certificate as  of the  close of  the quarter  (or time  of disposition  of  the
Residual Certificate if earlier), determined without taking into account the net
loss  for the quarter. The  initial adjusted basis of  a purchaser of a Residual
Certificate is  the amount  paid for  such Residual  Certificate. Such  adjusted
basis  will  be increased  by the  amount of  taxable income  of the  REMIC Pool
reportable by the Residual  Holder and will be  decreased (but not below  zero),
first,  by a cash distribution from the REMIC Pool and, second, by the amount of
loss of the  REMIC Pool  reportable by  the Residual  Holder. Any  loss that  is
disallowed  on account of this limitation  may be carried over indefinitely with
respect to the Residual Holder  as to whom such loss  was disallowed and may  be
used  by such Residual  Holder only to  offset any income  generated by the same
REMIC Pool.
 
    A Residual Holder will not be permitted to amortize directly the cost of its
Residual Certificate as  an offset to  its share  of the taxable  income of  the
related  REMIC Pool. However, that taxable income will not include cash received
by the REMIC Pool that  represents a recovery of the  REMIC Pool's basis in  its
assets.  Such  recovery of  basis  by the  REMIC Pool  will  have the  effect of
amortization of the issue  price of the Residual  Certificates over their  life.
However,  in view of the possible acceleration of the income of Residual Holders
described above under "Taxation of REMIC Income," the period of time over  which
such  issue price is effectively amortized may  be longer than the economic life
of the Residual Certificates.
 
    A Residual Certificate may have a negative value if the net present value of
anticipated tax liabilities exceeds the present value of anticipated cash flows.
In such event, it is unclear whether  its issue price would be considered to  be
zero  or such negative amount for purposes of determining the REMIC Pool's basis
in its assets. The  Proposed REMIC Regulations do  not address whether  residual
interests  could have a negative basis and  a negative issue price. However, the
preamble to the Proposed  REMIC Regulations indicates  that, while existing  tax
rules  do  not  accommodate  such  concepts,  the  Internal  Revenue  Service is
considering the tax treatment  of these types  of residual interests,  including
whether  such residual interests may  have a negative basis  or a negative issue
price. The Seller does not intend to  treat a Class of Residual Certificates  as
having  a value of less  than zero for purposes of  determining the basis of the
related REMIC Pool in its assets.
 
                                       75
<PAGE>
    Further, to the extent that the initial adjusted basis of a Residual  Holder
(other  than an original holder) in the Residual Certificate is greater than the
corresponding portion  of the  REMIC Pool's  basis in  the Mortgage  Loans,  the
Residual  Holder will not recover  a portion of such  basis until termination of
the REMIC Pool unless Treasury regulations yet to be issued provide for periodic
adjustments to  the  REMIC  income  otherwise reportable  by  such  holder.  The
Proposed REMIC Regulations do not so provide. See "Treatment of Certain Items of
REMIC Income and Expense--Market Discount" below regarding the basis of Mortgage
Loans  to the REMIC Pool and "Sale  or Exchange of a Residual Certificate" below
regarding possible treatment of a loss upon  termination of the REMIC Pool as  a
capital loss.
 
  TREATMENT OF CERTAIN ITEMS OF REMIC INCOME AND EXPENSE
 
    ORIGINAL  ISSUE  DISCOUNT.    Generally,  the  REMIC  Pool's  deductions for
original issue discount will be determined in the same manner as original  issue
discount  income on Regular  Certificates as described  above under "Taxation of
Regular Certificates--Original  Issue  Discount" and  "--Variable  Rate  Regular
Certificates," without regard to the DE MINIMIS rule described therein.
 
    MARKET DISCOUNT.  The REMIC Pool will have market discount income in respect
of  Mortgage Loans if, in general, the basis  of the REMIC Pool in such Mortgage
Loans is exceeded by their unpaid principal balances. The REMIC Pool's basis  in
such  Mortgage Loans is  generally the fair  market value of  the Mortgage Loans
immediately after the  transfer thereof to  the REMIC Pool.  The Proposed  REMIC
Regulations  provide that  such basis  is equal  in the  aggregate to  the issue
prices of all regular and  residual interests in the  REMIC Pool. In respect  of
Mortgage Loans that have market discount to which Code Section 1276 applies, the
accrued portion of such market discount would be recognized currently as an item
of ordinary income. Market discount income generally should accrue in the manner
described  above  under  "Taxation  of  Regular  Certificates--Market Discount."
However, the rules of Code Section  1276 concerning market discount income  will
not apply in the case of Mortgage Loans originated on or prior to July 18, 1984,
if  any.  With respect  to  such Mortgage  Loans,  market discount  is generally
includible in  REMIC  taxable  income  or ordinary  gross  income  pro  rata  as
principal  payments are  received. The  deduction of  a portion  of the interest
expense on the Regular Certificates allocable  to such discount may be  deferred
until  such discount is included in income, and any gain on the sale or exchange
thereof will  be  treated as  ordinary  income to  the  extent of  the  deferred
interest deductible at that time.
 
    PREMIUM.   Generally, if the  basis of the REMIC  Pool in the Mortgage Loans
exceeds the unpaid principal balances thereof, the REMIC Pool will be considered
to have acquired such Mortgage  Loans at a premium equal  to the amount of  such
excess.  As stated above, the  REMIC Pool's basis in  Mortgage Loans is the fair
market value of the Mortgage Loans, based  on the aggregate of the issue  prices
of  the regular and residual  interests in the REMIC  Pool immediately after the
transfer thereof to  the REMIC  Pool. In a  manner analogous  to the  discussion
above  under "Taxation of Regular Certificates--Premium,"  a person that holds a
Mortgage Loan as a capital  asset under Code Section  1221 may elect under  Code
Section 171 to amortize premium on Mortgage Loans originated after September 27,
1985  under a constant interest method. Amortizable bond premium will be treated
as an offset to interest income on the Mortgage Loans, rather than as a separate
deduction item.  Because substantially  all of  the mortgagors  on the  Mortgage
Loans are expected to be individuals, Code Section 171 will not be available for
premium  on Mortgage Loans originated on or prior to September 27, 1985. Premium
with respect  to such  Mortgage Loans  may be  deductible in  accordance with  a
reasonable  method regularly employed  by the holder  thereof. The allocation of
such premium pro rata among principal payments should be considered a reasonable
method; however, the Internal Revenue Service may argue that such premium should
be allocated in a different manner, such as allocating such premium entirely  to
the final payment of principal.
 
  LIMITATIONS ON OFFSET OR EXEMPTION OF REMIC INCOME
 
    The  Code  provides that,  to  the extent  provided  in regulations,  if the
aggregate value of the Residual Certificates relative to the aggregate value  of
the   Regular  Certificates  and  Residual  Certificates  is  considered  to  be
"significant," as described  below, then a  portion (but not  all) of the  REMIC
taxable income
 
                                       76
<PAGE>
includible  in determining the federal income tax liability of a Residual Holder
will be subject to special treatment.  That portion, referred to as the  "excess
inclusion,"  is equal  to the  excess of REMIC  taxable income  for the calendar
quarter allocable to  a Residual Certificate  over the daily  accruals for  such
quarterly period of (i) 120% of the long-term applicable Federal rate that would
have  applied to the Residual Certificate (if  it were a debt instrument) on the
Startup Day under Code  Section 1274(d), multiplied by  (ii) the adjusted  issue
price  of such Residual  Certificate at the beginning  of such quarterly period.
For this purpose,  the adjusted  issue price of  a Residual  Certificate at  the
beginning  of a quarter is the issue price of the Residual Certificate, plus the
amount of such daily  accruals of REMIC income  described in this paragraph  for
all  prior quarters,  decreased by any  distributions made with  respect to such
Residual Certificate prior to the  beginning of such quarterly period.  Although
the  Conference Committee Report to the 1986 Act indicates that the value of all
Residual Certificates would be considered significant in cases where such  value
is  at least 2% of the aggregate  value of the Regular Certificates and Residual
Certificates, the Proposed REMIC Regulations do  not adopt such a general  rule.
Accordingly, the portion of the REMIC Pool's taxable income that will be treated
as  excess  inclusions will  be determined  by the  preceding formula,  with the
effect that such excess inclusions  will be a larger  portion of such income  as
the relative value of the Residual Certificates diminishes.
 
    The  portion of a  Residual Holder's REMIC taxable  income consisting of the
excess inclusions generally may not be offset by other deductions, including net
operating loss carryforwards, on such Residual Holder's return. Further, if  the
Residual  Holder is  an organization  subject to  the tax  on unrelated business
income imposed by Code Section 511, the Residual Holder's excess inclusions will
be treated as  unrelated business  taxable income  of such  Residual Holder  for
purposes  of Code Section 511.  In addition, REMIC taxable  income is subject to
30% withholding tax with respect to certain persons who are not U.S. Persons (as
defined  below  under   "Tax-Related  Restrictions  on   Transfer  of   Residual
Certificates--Foreign  Investors"),  and  the  portion  thereof  attributable to
excess inclusions is not eligible for  any reduction in the rate of  withholding
tax   (by   treaty   or   otherwise).   See   "Taxation   of   Certain   Foreign
Investors--Residual Certificates" below. Finally, under Treasury regulations yet
to be issued, if a real estate  investment trust owns a Residual Certificate,  a
portion  of dividends  paid by  the real  estate investment  trust could  not be
offset by net operating losses  of its shareholders, would constitute  unrelated
business taxable income for tax-exempt shareholders, and would be ineligible for
reduction  of  withholding to  certain persons  who are  not U.S.  Persons. This
treatment may be  extended under  Treasury regulations  to regulated  investment
companies, common trust funds, and certain cooperatives.
 
    An  exception  to  the  inability  of a  Residual  Holder  to  offset excess
inclusions with unrelated deductions  and net operating  losses applies to  Code
Section  593 institutions ("thrift institutions"). For purposes of applying this
rule, all  members of  an  affiliated group  filing  a consolidated  return  are
treated  as one taxpayer, except that  thrift institutions to which Code Section
593 applies,  together  with their  subsidiaries  formed to  issue  REMICs,  are
treated   as  separate   corporations.  Furthermore,  the   Code  provides  that
regulations may disallow the ability of  a thrift institution to use  deductions
to offset excess inclusions if necessary or appropriate to prevent the avoidance
of tax. The Proposed REMIC Regulations provide that a thrift institution may not
so   offset  its  excess  inclusions   unless  the  Residual  Certificates  have
"significant value," which requires that  (i) the Residual Certificates have  an
issue price that is at least equal to 2% of the aggregate of the issue prices of
all  Residual Certificates  and Regular Certificates  with respect  to the REMIC
Pool,  and  (ii)  the  anticipated   weighted  average  life  of  the   Residual
Certificates  is at least 20% of the  anticipated life (I.E., final maturity) of
the  REMIC  Pool.  The  anticipated  weighted  average  life  of  the   Residual
Certificates  is based on the anticipated principal payments to be recieved with
respect thereto (using the Prepayment  Assumption), except that all  anticipated
distributions  are to be used if the Residual Certificate is not entitled to any
principal payments,  or  is entitled  to  a disproportionately  small  principal
amount  relative  to interest  payments thereon.  The  principal amount  will be
considered  disproportionately  small  if  the  issue  price  of  the   Residual
Certificates  exceeds  125%  of  their  initial  principal  amount.  Finally, an
ordering rule under the Proposed
 
                                       77
<PAGE>
REMIC  Regulations provides that a thrift institution may only offset its excess
inclusion income  with deductions  after  it has  first applied  its  deductions
against  income  that  is  not  excess  inclusion  income.  If  applicable,  the
Prospectus Supplement  with respect  to  a Series  will  set forth  whether  the
Residual  Certificates  are  expected  to have  "significant  value"  within the
meaning of the Proposed REMIC Regulations.
 
  TAX-RELATED RESTRICTIONS ON TRANSFER OF RESIDUAL CERTIFICATES
 
    DISQUALIFIED ORGANIZATIONS.    If any  legal  or beneficial  interest  in  a
Residual  Certificate is transferred to  a Disqualified Organization (as defined
below), a tax  would be imposed  in an amount  equal to the  product of (i)  the
present  value of the  total anticipated excess inclusions  with respect to such
Residual Certificate  for  periods  after  the transfer  and  (ii)  the  highest
marginal  federal income tax rate applicable to corporations. The Proposed REMIC
Regulations provide that the anticipated  excess inclusions are based on  actual
prepayment  experience to the date of  the transfer and projected payments based
on the  Prepayment Assumption.  The  present value  rate equals  the  applicable
federal  rate under Code  Section 1274(d) as of  the date of  the transfer for a
term equal to the remaining term of the  REMIC, and such rate is applied to  the
anticipated excess inclusions from the end of the remaining calendar quarters in
which  they arise  to the date  of the transfer.  Such a tax  generally would be
imposed on the transferor  of the Residual Certificate,  except that where  such
transfer  is through an agent (including  a broker, nominee, or other middleman)
for a Disqualified Organization, the tax would instead be imposed on such agent.
However, a transferor of a Residual Certificate would in no event be liable  for
such  tax  with  respect  to  a transfer  if  the  transferee  furnishes  to the
transferor an affidavit that the  transferee is not a Disqualified  Organization
and,  as  of the  time  of the  transfer, the  transferor  does not  have actual
knowledge that  such affidavit  is false.  The tax  also may  be waived  by  the
Treasury  Department if the  Disqualified Organization promptly  disposes of the
residual interest and the  transferor pays income tax  at the highest  corporate
rate on the excess inclusion for the period the Residual Certificate is actually
held by the Disqualified Organization.
 
    In  addition,  if  a "Pass-Through  Entity"  (as defined  below)  has excess
inclusion income with respect  to a Residual Certificate  during a taxable  year
and  a Disqualified Organization is  the record holder of  an equity interest in
such entity, then a tax  is imposed on such entity  equal to the product of  (i)
the  amount  of excess  inclusions that  are  allocable to  the interest  in the
Pass-Through Entity during the period such interest is held by such Disqualified
Organization, and (ii) the highest  marginal federal corporate income tax  rate.
Such  tax would be deductible from the ordinary gross income of the Pass-Through
Entity for the  taxable year. The  Pass-Through Entity would  not be liable  for
such  tax if it has received an affidavit from such record holder that it is not
a Disqualified  Organization or  stating such  holder's taxpayer  identification
number  and, during the period such person  is the record holder of the Residual
Certificate, the Pass-Through Entity  does not have  actual knowledge that  such
affidavit is false.
 
    For these purposes, (i) "Disqualified Organization" means the United States,
any  state  or  political  subdivision  thereof,  any  foreign  government,  any
international  organization,  any  agency  or  instrumentality  of  any  of  the
foregoing  (provided, that such term does  not include an instrumentality if all
of its activities are subject to tax and a majority of its board of directors is
not selected  by any  such governmental  entity), any  cooperative  organization
furnishing  electric energy or  providing telephone service  to persons in rural
areas as described in  Code Section 1381(a)(2)(C),  and any organization  (other
than  a farmers' cooperative described in Code  Section 521) that is exempt from
taxation under  the Code  unless such  organization  is subject  to the  tax  on
unrelated  business income imposed  by Code Section  511, and (ii) "Pass-Through
Entity" means any  regulated investment company,  real estate investment  trust,
common  trust  fund,  partnership,  trust  or  estate  and  certain corporations
operating on  a  cooperative  basis.  Except as  may  be  provided  in  Treasury
regulations,  any  person holding  an  interest in  a  Pass-Through Entity  as a
nominee for  another  will, with  respect  to such  interest,  be treated  as  a
Pass-Through Entity.
 
    The  Pooling and Servicing  Agreement with respect to  a Series will provide
that  no  legal  or  beneficial  interest  in  a  Residual  Certificate  may  be
transferred  or registered  unless (i) the  proposed transferee  provides to the
Seller and the Trustee an affidavit to the effect that such transferee is not  a
Disqualified Organization, is
 
                                       78
<PAGE>
not   purchasing  such  Residual  Certificates   on  behalf  of  a  Disqualified
Organization (I.E., as a  broker, nominee, or middleman  thereof) and is not  an
entity  that  holds  REMIC  residual securities  as  nominee  to  facilitate the
clearance and  settlement  of  such  securities  through  electronic  book-entry
changes  in  accounts of  participating organizations,  and (ii)  the transferor
provides a statement in  writing to the  Seller and the Trustee  that it has  no
actual  knowledge  that  such  affidavit is  false.  Moreover,  the  Pooling and
Servicing Agreement will  provide that  any attempted or  purported transfer  in
violation  of these transfer restrictions will be null and void and will vest no
rights in any purported transferee. Each Residual Certificate with respect to  a
Series  will bear a legend referring to  such restrictions on transfer, and each
Residual Holder  will be  deemed to  have agreed,  as a  condition of  ownership
thereof,  to  any  amendments to  the  related Pooling  and  Servicing Agreement
required under the  Code or  applicable Treasury regulations  to effectuate  the
foregoing  restrictions. Information  necessary to compute  an applicable excise
tax must be  furnished to  the Internal Revenue  Service and  to the  requesting
party  within 60 days of the request, and the Seller or the Trustee may charge a
fee for computing and providing such information.
 
    NONECONOMIC RESIDUAL  INTERESTS.    The  Proposed  REMIC  Regulations  would
disregard  certain  transfers  of  Residual  Certificates,  in  which  case  the
transferor  would  continue  to  be  treated  as  the  owner  of  the   Residual
Certificates  and thus  would continue  to be  subject to  tax on  its allocable
portion of  the  net  income  of  the  REMIC  Pool.  Under  the  Proposed  REMIC
Regulations,  a transfer of a "noneconomic residual interest" (defined below) to
a Residual Holder (other  than a Residual  Holder who is not  a U.S. Person,  as
defined  below under "Foreign Investors") is  disregarded for all federal income
tax purposes unless  no significant  purpose of the  transfer is  to impede  the
assessment  or collection of  tax. A residual  interest in a  REMIC (including a
residual interest with a positive value at issuance) is a "noneconomic  residual
interest"  unless, at  the time of  the transfer,  (i) the present  value of the
expected future  distributions on  the  residual interest  at least  equals  the
product  of  the present  value  of the  anticipated  excess inclusions  and the
highest corporate income tax rate in effect  for the year in which the  transfer
occurs,  and (ii)  the transferor  reasonably expects  that the  transferee will
receive distributions from the REMIC at or after the time at which taxes  accrue
on  the anticipated  excess inclusions  in an  amount sufficient  to satisfy the
accrued taxes. The anticipated excess inclusions and the present value rate  are
determined   in  the  same  manner  as   set  forth  above  under  "Disqualified
Organizations." The Proposed REMIC Regulations do not explain when a substantial
purpose of  a  transfer  will be  deemed  to  be to  impede  the  assessment  or
collection  of tax.  While complete  assurance as to  how to  meet this standard
cannot be provided,  the Indenture  will require  the transferee  of a  Residual
Certificate  to state as part of the affidavit described above under the heading
"Disqualified Organizations" that such transferee has no intention to impede the
assessment or collection of any federal, state or local income taxes required to
be paid with respect to the  Residual Certificate, and the transferor must  have
no reason to believe that such statement is untrue.
 
    FOREIGN INVESTORS.  The Proposed REMIC Regulations provide that the transfer
of  a  Residual Certificate  that has  "tax avoidance  potential" to  a "foreign
person" will be  disregarded for  all federal  tax purposes.  This rule  appears
intended to apply to a transferee who is not a "U.S. Person" (as defined below),
unless  such transferee's income is effectively  connected with the conduct of a
trade or business within the United States. A Residual Certificate is deemed  to
have tax avoidance potential unless, at the time of the transfer, (i) the future
value  of expected distributions  equals at least 30%  of the anticipated excess
inclusions after the transfer, and  (ii) the transferor reasonably expects  that
the  transferee will receive sufficient distributions  from the REMIC Pool at or
after the  time  at which  the  excess  inclusions accrue  for  the  accumulated
withholding   tax  liability  to  be  paid,   even  if  such  distributions  are
"substantially  deferred."  If  the  non-U.S.  Person  transfers  the   Residual
Certificate  back to  a U.S.  Person, the transfer  will be  disregarded and the
foreign transferor will continue to be treated as the owner unless  arrangements
are  made  so  that  the transfer  does  not  have the  effect  of  allowing the
transferor to avoid tax on accrued excess inclusions.
 
    The Prospectus  Supplement relating  to  the Certificates  of a  Series  may
provide  that a Residual Certificate  may not be purchased  by or transferred to
any person that  is not  a U.S.  Person or  may describe  the circumstances  and
restrictions  pursuant to  which such  a transfer  may be  made. The  term "U.S.
Person"
 
                                       79
<PAGE>
means a citizen or resident of the United States, a corporation, partnership  or
other  entity created or organized in or under  the laws of the United States or
any political subdivision thereof, or an estate or trust that is subject to U.S.
federal income tax regardless of the source of its income.
 
  SALE OR EXCHANGE OF A RESIDUAL CERTIFICATE
 
    Upon the sale  or exchange of  a Residual Certificate,  the Residual  Holder
will  recognize gain or loss equal to the excess, if any, of the amount realized
over the  adjusted  basis  (as  described  above  under  "Taxation  of  Residual
Certificates--Basis  and  Losses")  of  such Residual  Holder  in  such Residual
Certificate at the time of  the sale or exchange.  In addition to reporting  the
taxable  income of the REMIC Pool, a Residual Holder will have taxable income to
the extent that any cash  distribution to him from  the REMIC Pool exceeds  such
adjusted  basis on that Distribution  Date. Such income will  be treated as gain
from the sale or exchange of the  Residual Certificate. It is possible that  the
termination of the REMIC Pool may be treated as a sale or exchange of a Residual
Holder's  Residual Certificate,  in which  case, if  the Residual  Holder has an
adjusted basis in his  Residual Certificate remaining when  his interest in  the
REMIC  Pool terminates, and if  he holds such Residual  Certificate as a capital
asset under Code Section  1221, then he  will recognize a  capital loss at  that
time in the amount of such remaining adjusted basis.
 
    The  Conference Committee  Report to the  1986 Act provides  that, except as
provided in Treasury regulations yet to be  issued, the wash sale rules of  Code
Section  1091  will apply  to dispositions  of  Residual Certificates  where the
seller of  the Residual  Certificate,  during the  period beginning  six  months
before the sale or disposition of the Residual Certificate and ending six months
after  such sale or disposition, acquires  (or enters into any other transaction
that results in the application of  Code Section 1091) any residual interest  in
any  REMIC or  any interest in  a "taxable  mortgage pool" (such  as a non-REMIC
owner trust) that is economically comparable to a Residual Certificate.
 
  TAXES THAT MAY BE IMPOSED ON THE REMIC POOL
 
    PROHIBITED TRANSACTIONS.   Income  from certain  transactions by  the  REMIC
Pool,  called prohibited  transactions, will not  be part of  the calculation of
income or loss includible in the federal income tax returns of Residual Holders,
but rather will be taxed directly to  the REMIC Pool at a 100% rate.  Prohibited
transactions generally include (i) the disposition of a qualified mortgage other
than  for (a) substitution within  two years of the  Startup Day for a defective
(including a defaulted) obligation (or repurchase  in lieu of substitution of  a
defective  (including a defaulted) obligation at  any time) or for any qualified
mortgage within three months  of the Startup Day,  (b) foreclosure, default,  or
imminent  default of a  qualified mortgage, (c) bankruptcy  or insolvency of the
REMIC Pool,  or (d)  a qualified  (complete) liquidation,  (ii) the  receipt  of
income  from assets that are  not the type of  mortgages or investments that the
REMIC Pool is permitted to hold, (iii) the receipt of compensation for services,
or (iv) the receipt of gain from disposition of cash flow investments other than
pursuant to a qualified liquidation. Notwithstanding  (i) and (iv), it is not  a
prohibited  transaction  to sell  REMIC Pool  property to  prevent a  default on
Regular Certificates  as a  result of  a default  on qualified  mortgages or  to
facilitate   a  clean-up  call  (generally,  an  optional  termination  to  save
administrative costs when no more than a small percentage of the Certificates is
outstanding). The Proposed REMIC Regulations indicate that the modification of a
Mortgage Loan generally will not be treated as a disposition if it is occasioned
by a default or  reasonably foreseeable default, an  assumption of the  Mortgage
Loan,  the waiver of a due-on-sale clause, or the conversion of an interest rate
by a mortgagor pursuant to the  terms of a convertible adjustable rate  Mortgage
Loan.
 
    CONTRIBUTIONS  TO THE  REMIC POOL  AFTER THE STARTUP  DAY.   In general, the
REMIC Pool will be subject to a tax at a 100% rate on the value of any  property
contributed to the REMIC Pool after the Startup Day. Exceptions are provided for
cash  contributions to the REMIC Pool (i)  during the three months following the
Startup Day, (ii) made to a qualified  reserve fund by a Residual Holder,  (iii)
in the nature of a guarantee, (iv) made to facilitate a qualified liquidation or
clean-up  call, and (v) as otherwise permitted in Treasury regulations yet to be
issued.
 
                                       80
<PAGE>
    NET INCOME FROM  FORECLOSURE PROPERTY.   The REMIC Pool  will be subject  to
federal income tax at the highest corporate rate on "net income from foreclosure
property,"  determined  by  reference to  the  rules applicable  to  real estate
investment trusts. Generally, property acquired  by deed in lieu of  foreclosure
would  be treated  as "foreclosure  property" for  a period  of two  years, with
possible extensions. Net income from  foreclosure property generally means  gain
from  the sale of  a foreclosure property  that is inventory  property and gross
income  from  foreclosure  property  other  than  qualifying  rents  and   other
qualifying income for a real estate investment trust.
 
  LIQUIDATION OF THE REMIC POOL
 
    If a REMIC Pool and the Trustee adopt a plan of complete liquidation, within
the  meaning of Code Section 860F(a)(4)(A)(i), and sell all of its assets (other
than cash) within a 90-day period beginning  on the date of the adoption of  the
plan  of liquidation, then the REMIC Pool will  recognize no gain or loss on the
sale of  its assets,  provided that  the REMIC  Pool credits  or distributes  in
liquidation  all of the sale proceeds plus its cash (other than amounts retained
to meet claims) to holders of  Regular Certificates and Residual Holders  within
the 90-day period.
 
  ADMINISTRATIVE MATTERS
 
    The  REMIC Pool will  be required to  maintain its books  on a calendar year
basis and to file federal income tax returns for federal income tax purposes  in
a  manner similar to a partnership. The form  for such income tax return is Form
1066, U.S.  Real Estate  Mortgage Investment  Conduit Income  Tax Return.  Under
TAMRA,  the Trustee will be required to  sign the REMIC Pool's returns. Treasury
regulations provide that, except where there is a single Residual Holder for  an
entire  taxable  year, the  REMIC Pool  will  be subject  to the  procedural and
administrative rules  of  the Code  applicable  to partnerships,  including  the
determination by the Internal Revenue Service of any adjustments to, among other
things,  items of REMIC  income, gain, loss,  deduction, or credit  in a unified
administrative proceeding. The Servicer will be obligated to act as "tax matters
person," as  defined in  applicable Treasury  regulations, with  respect to  the
REMIC  Pool, in its capacity as either  Residual Holder or agent of the Residual
Holders. If  the Code  or  applicable Treasury  regulations  do not  permit  the
Servicer  to act as tax matters person in  its capacity as agent of the Residual
Holders, the Residual Holder chosen by the Residual Holders or such other person
specified pursuant  to Treasury  regulations  will be  required  to act  as  tax
matters person.
 
LIMITATIONS ON DEDUCTION OF CERTAIN EXPENSES
 
    An  investor  who is  an individual,  estate,  or trust  will be  subject to
limitation with respect to certain itemized deductions described in Code Section
67, to the extent that such itemized deductions, in the aggregate, do not exceed
2% of  the  investor's adjusted  gross  income.  In addition,  Code  Section  68
provides  that itemized deductions otherwise allowable  for a taxable year of an
individual taxpayer will be reduced  by the lesser of (i)  3% of the excess,  if
any,  of adjusted gross income  over $100,000 ($50,000 in  the case of a married
individual filing a  separate return),  or (ii) 80%  of the  amount of  itemized
deductions  otherwise allowable for such year. In the case of a REMIC Pool, such
deductions may include deductions under Code  Section 212 for the Servicing  Fee
and  all administrative and  other expenses relating  to the REMIC  Pool, or any
similar expenses allocated to the REMIC Pool with respect to a regular  interest
it  holds in  another REMIC. Such  investors who hold  REMIC Certificates either
directly or indirectly through certain pass-through entities may have their  pro
rata  share of such expenses  allocated to them as  additional gross income, but
may be subject to such limitation on deductions. In addition, such expenses  are
not deductible at all for purposes of computing the alternative minimum tax, and
may  cause such investors to be subject to significant additional tax liability.
Temporary Treasury  regulations provide  that the  additional gross  income  and
corresponding  amount of expenses generally are  to be allocated entirely to the
holders of Residual  Certificates in the  case of  a REMIC Pool  that would  not
qualify as a fixed investment trust in the absence of a REMIC election. However,
such  additional gross  income and  limitation on  deductions will  apply to the
allocable portion of such expenses to  holders of Regular Certificates, as  well
as  holders of Residual Certificates, where such Regular Certificates are issued
in a manner that is similar  to pass-through certificates in a fixed  investment
trust.  In general, such allocable portion will be determined based on the ratio
that
 
                                       81
<PAGE>
a REMIC Certificateholder's income,  determined on a daily  basis, bears to  the
income  of all  holders of Regular  Certificates and  Residual Certificates with
respect to a  REMIC Pool. As  a result, individuals,  estates or trusts  holding
REMIC  Certificates  (either directly  or  indirectly through  a  grantor trust,
partnership, S  corporation,  REMIC,  or  certain  other  pass-through  entities
described  in  the foregoing  temporary Treasury  regulations) may  have taxable
income in excess  of the  interest income at  the pass-through  rate on  Regular
Certificates  that are issued  in a single class  or otherwise consistently with
fixed investment trust status or in excess of cash distributions for the related
period on Residual Certificates.
 
TAXATION OF CERTAIN FOREIGN INVESTORS
 
  REGULAR CERTIFICATES
 
    Interest,  including  original  issue  discount,  distributable  to  Regular
Certificateholders  who are non-resident aliens,  foreign corporations, or other
Non-U.S. Persons (as  defined below),  will be  considered "portfolio  interest"
and,  therefore, generally will not be  subject to 30% United States withholding
tax, provided that such  Non-U.S. Person (i) is  not a "10-percent  shareholder"
within  the  meaning  of  Code  Section  871(h)(3)(B)  or  a  controlled foreign
corporation described  in  Code  Section  881(c)(3)(C)  and  (ii)  provides  the
Trustee, or the person who would otherwise be required to withhold tax from such
distributions  under Code Section  1441 or 1442,  with an appropriate statement,
signed under penalties of perjury, identifying the beneficial owner and stating,
among other things, that  the beneficial owner of  the Regular Certificate is  a
Non-U.S.  Person. If  such statement,  or any  other required  statement, is not
provided, 30% withholding will apply unless reduced or eliminated pursuant to an
applicable tax  treaty or  unless the  interest on  the Regular  Certificate  is
effectively  connected with the conduct of a trade or business within the United
States by such Non-U.S. Person. In the latter case, such Non-U.S. Person will be
subject to United States federal income tax at regular rates. Investors who  are
Non-U.S.  Persons should consult  their own tax  advisors regarding the specific
tax consequences to  them of owning  a Regular Certificate.  The term  "Non-U.S.
Person" means any person who is not a U.S. Person.
 
  RESIDUAL CERTIFICATES
 
    The  Conference Committee Report to the 1986 Act indicates that amounts paid
to Residual  Holders  who are  Non-U.S.  Persons  are treated  as  interest  for
purposes  of  the 30%  (or  lower treaty  rate)  United States  withholding tax.
Treasury regulations provide  that amounts distributed  to Residual Holders  may
qualify as "portfolio interest", subject to the conditions described in "Regular
Certificates"  above, but only  to the extent  that (i) the  Mortgage Loans were
issued after July  18, 1984  and (ii)  the Trust  Estate or  segregated pool  of
assets  therein (as to which  a separate REMIC election  will be made), to which
the Residual Certificate relates, consists of obligations issued in  "registered
form"  within the meaning  of Code Section  163(f)(1). Generally, Mortgage Loans
will not be,  but regular interests  in another REMIC  Pool will be,  considered
obligations  issued in registered form. Furthermore,  a Residual Holder will not
be entitled to any exemption from the 30% withholding tax (or lower treaty rate)
to the  extent of  that portion  of  REMIC taxable  income that  constitutes  an
"excess  inclusion."  See  "Taxation  of  Residual  Certificates--Limitations on
Offset or Exemption of  REMIC Income." If the  amounts paid to Residual  Holders
who  are Non-U.S. Persons are effectively connected  with the conduct of a trade
or business within  the United States  by such Non-U.S.  Persons, 30% (or  lower
treaty  rate)  withholding will  not apply.  Instead, the  amounts paid  to such
Non-U.S. Persons will be subject to United States federal income tax at  regular
rates.  If 30%  (or lower treaty  rate) withholding is  applicable, such amounts
generally will be taken into account for purposes of withholding only when  paid
or otherwise distributed (or when the Residual Certificate is disposed of) under
rules  similar to  withholding upon  disposition of  debt instruments  that have
original issue discount. See "Tax-Related  Restrictions on Transfer of  Residual
Certificates--Foreign  Investors"  above  concerning  the  disregard  of certain
transfers having "tax avoidance potential."  Investors who are Non-U.S.  Persons
should consult their own tax advisors regarding the specific tax consequences to
them of owning Residual Certificates.
 
                                       82
<PAGE>
BACKUP WITHHOLDING
 
    Distributions  made on the Regular Certificates,  and proceeds from the sale
of the Regular Certificates to or through  certain brokers, may be subject to  a
"backup" withholding tax under Code Section 3406 of 20% on "reportable payments"
(including  interest distributions, original issue  discount, and, under certain
circumstances, principal  distributions)  unless the  Regular  Certificateholder
complies  with certain reporting and/or  certification procedures, including the
provision of its taxpayer identification number to the Trustee, its agent or the
broker  who   effected  the   sale   of  the   Regular  Certificate,   or   such
Certificateholder  is otherwise an exempt  recipient under applicable provisions
of the  Code.  Any amounts  to  be withheld  from  distribution on  the  Regular
Certificates  would be refunded by the Internal  Revenue Service or allowed as a
credit against the Regular Certificateholder's federal income tax liability.
 
REPORTING REQUIREMENTS
 
    Reports of  accrued  interest  and  original issue  discount  will  be  made
annually to the Internal Revenue Service and to individuals, estates, non-exempt
and  non-charitable trusts, and partnerships who are either holders of record of
Regular Certificates or beneficial owners who own Regular Certificates through a
broker or middleman as nominee. All  brokers, nominees and all other  non-exempt
holders  of record of Regular Certificates (including corporations, non-calendar
year taxpayers,  securities  or  commodities  dealers,  real  estate  investment
trusts,  investment  companies,  common  trust  funds,  thrift  institutions and
charitable trusts)  may request  such information  for any  calendar quarter  by
telephone  or in writing by contacting the person designated in Internal Revenue
Service  Publication  938  with  respect  to  a  particular  Series  of  Regular
Certificates.  Holders through nominees  must request such  information from the
nominee. Treasury regulations provide that information necessary to compute  the
accrual of any market discount on the Regular Certificates must be furnished for
calendar years beginning after 1990.
 
    The  Internal Revenue  Service's Form 1066  has an  accompanying Schedule Q,
Quarterly Notice to  Residual Interest Holders  of REMIC Taxable  Income or  Net
Loss  Allocation. Treasury regulations  require that Schedule  Q be furnished by
the REMIC Pool to  each Residual Holder  by the end of  the month following  the
close  of  each calendar  quarter  (41 days  after the  end  of a  quarter under
proposed Treasury regulations) in which the REMIC Pool is in existence.
 
    Treasury  regulations   require  that,   in   addition  to   the   foregoing
requirements,  information  must  be furnished  quarterly  to  Residual Holders,
furnished annually, if applicable, to holders of Regular Certificates, and filed
annually with the Internal Revenue  Service concerning Code Section 67  expenses
(see  "Limitations on  Deduction of Certain  Expenses" above)  allocable to such
holders. Furthermore,  under such  regulations,  information must  be  furnished
quarterly  to  Residual  Holders,  furnished  annually  to  holders  of  Regular
Certificates, and filed  annually with the  Internal Revenue Service  concerning
the  percentage of  the REMIC  Pool's assets  meeting the  qualified asset tests
described above under "Status of REMIC Certificates."
 
                FEDERAL INCOME TAX CONSEQUENCES FOR CERTIFICATES
                     AS TO WHICH NO REMIC ELECTION IS MADE
 
STANDARD CERTIFICATES
 
  GENERAL
 
    In the  event that  no  election is  made  to treat  a  Trust Estate  (or  a
segregated  pool  of  assets  therein)  with respect  to  a  Series  of Standard
Certificates as a REMIC, the Trust Estate will be classified as a grantor  trust
under  subpart E, Part 1 of  subchapter J of the Code  and not as an association
taxable as a corporation. Where there is no Fixed Retained Yield with respect to
the Mortgage  Loans underlying  the Certificates  of a  Series, and  where  such
Certificates  are not designated  as "Stripped Certificates"  the holder of each
such Certificate in  such Series  will be  treated as the  owner of  a pro  rata
undivided  interest  in the  ordinary income  and corpus  portions of  the Trust
Estate represented  by  his Standard  Certificate  and will  be  considered  the
beneficial owner of a pro rata undivided interest in each of the Mortgage Loans,
subject to the discussion
 
                                       83
<PAGE>
below under "Recharacterization of Servicing Fees." Accordingly, the holder of a
Standard  Certificate of a particular  Series will be required  to report on its
federal income tax  return its  pro rata  share of  the entire  income from  the
Mortgage  Loans represented by  his Standard Certificate,  including interest at
the coupon  rate on  such  Mortgage Loans,  original  issue discount  (if  any),
prepayment  fees,  assumption fees,  and late  payment  charges received  by the
Servicer,  in  accordance  with  such  Standard  Certificateholder's  method  of
accounting.  A Standard Certificateholder  generally will be  able to deduct its
share of the  Servicing Fee  and all administrative  and other  expenses of  the
Trust  Estate in  accordance with its  method of accounting,  provided that such
amounts are reasonable compensation for services rendered to that Trust  Estate.
However,  investors  who are  individuals, estates  or  trusts who  own Standard
Certificates,  either  directly  or  indirectly  through  certain   pass-through
entities,  will  be  subject  to limitation  with  respect  to  certain itemized
deductions described in Code Section 67, including deductions under Code Section
212 for the Servicing Fee and all such administrative and other expenses of  the
Trust  Estate, to  the extent  that such  deductions, in  the aggregate,  do not
exceed two percent  of an investor's  adjusted gross income.  In addition,  Code
Section  68 provides that itemized deductions  otherwise allowable for a taxable
year of an individual taxpayer  will be reduced by the  lesser of (i) 3% of  the
excess, if any, of adjusted gross income over $100,000 ($50,000 in the case of a
married  individual filing  a separate  return), or  (ii) 80%  of the  amount of
itemized deductions  otherwise  allowable  for  such year.  As  a  result,  such
investors  holding  Standard  Certificates,  directly  or  indirectly  through a
pass-through entity,  may  have  aggregate  taxable  income  in  excess  of  the
aggregate  amount of cash received on such Standard Certificates with respect to
interest at  the  pass-through rate  or  as  discount income  on  such  Standard
Certificates.  In addition, such expenses are not deductible at all for purposes
of computing the  alternative minimum tax,  and may cause  such investors to  be
subject  to significant additional tax liability. Moreover, where there is Fixed
Retained Yield  with  respect to  the  Mortgage  Loans underlying  a  Series  of
Standard  Certificates or where  the servicing fees are  in excess of reasonable
servicing compensation, the transaction  will be subject  to the application  of
the  "stripped bond" and "stripped coupon" rules of the Code, as described below
under  "Stripped  Certificates"  and  "Recharacterization  of  Servicing  Fees,"
respectively.
 
  TAX STATUS
 
    Cadwalader, Wickersham & Taft has advised the Seller that:
 
        1.    A Standard  Certificate  owned by  a  "domestic building  and loan
    association"  within  the  meaning  of  Code  Section  7701(a)(19)  will  be
    considered  to represent "loans...secured  by an interest  in real property"
    within the meaning of Code Section 7701(a)(19)(C)(v), provided that the real
    property  securing  the   Mortgage  Loans  represented   by  that   Standard
    Certificate is of the type described in such section of the Code.
 
        2.  A Standard Certificate owned by a financial institution described in
    Code  Section  593(a)  will  be  considered  to  represent  "qualifying real
    property loans" within the meaning of Code Section 593(d)(1), provided  that
    the  real property securing the Mortgage  Loans represented by that Standard
    Certificate is of the type described in such section of the Code.
 
        3.  A Standard Certificate owned by a real estate investment trust  will
    be  considered to represent "real estate  assets" within the meaning of Code
    Section 856(c)(5)(A) to  the extent  that the  assets of  the related  Trust
    Estate  consist of qualified assets, and interest income on such assets will
    be  considered  "interest  on  obligations  secured  by  mortgages  on  real
    property" within the meaning of Code Section 856(c)(3)(B).
 
        4.    A Standard  Certificate owned  by  a REMIC  will be  considered to
    represent an  "obligation (including  any  participation or  certificate  of
    beneficial ownership therein) which is principally secured by an interest in
    real  property"  within the  meaning of  Code  Section 860G(a)(3)(A)  to the
    extent that the  assets of the  related Trust Estate  consist of  "qualified
    mortgages" within the meaning of Code Section 860G(a)(3).
 
                                       84
<PAGE>
    An  issue arises as to whether Buy-Down  Loans may be characterized in their
entirety under the Code provisions cited in the immediately preceding paragraph.
Code Section 593(d)(1)(C) provides that the term "qualifying real property loan"
does not include a loan "to the extent  secured by a deposit in or share of  the
taxpayer."  The application of  this provision to a  Buy-Down Fund is uncertain,
but may require that a  taxpayer's investment in a  Buy-Down Loan be reduced  by
the  Buy-Down Fund. As  to the treatment  of Buy-Down Loans  as "qualifying real
property loans" under Code  Section 593(d)(1) if the  exception of Code  Section
593(d)(1)(C)  is  inapplicable,  as  "loans...secured  by  an  interest  in real
property" under Code  Section 7701(a)(19)(C)(v), as  "real estate assets"  under
Code Section 856(c)(5)(A), and as "obligation[s] . . . principally secured by an
interest  in real property" under Code  Section 860G(a)(3)(A), there is indirect
authority supporting treatment of an investment  in a Buy-Down Loan as  entirely
secured  by real property if the fair market value of the real property securing
the loan exceeds the  principal amount of  the loan at the  time of issuance  or
acquisition,  as  the case  may be.  There  is no  assurance that  the treatment
described above is proper. Accordingly, Standard Certificateholders are urged to
consult their own tax  advisors concerning the effects  of such arrangements  on
the characterization of such Standard Certificateholder's investment for federal
income tax purposes.
 
  PREMIUM AND DISCOUNT
 
    Standard  Certificateholders are advised to  consult with their tax advisors
as to the federal  income tax treatment of  premium and discount arising  either
upon initial acquisition of Standard Certificates or thereafter.
 
    PREMIUM.   The treatment of premium incurred upon the purchase of a Standard
Certificate will  be  determined generally  as  described above  under  "Federal
Income   Tax   Consequences   for  REMIC   Certificates--Taxation   of  Residual
Certificates--Premium."
 
    ORIGINAL ISSUE  DISCOUNT.    The  Internal Revenue  Service  has  stated  in
published  rulings that, in circumstances similar to those described herein, the
original   issue   discount   rules   will   be   applicable   to   a   Standard
Certificateholder's  interest in those Mortgage Loans as to which the conditions
for the  application  of  those  sections  are  met.  Rules  regarding  periodic
inclusion  of  original issue  discount income  are  applicable to  mortgages of
corporations originated after May 27, 1969, mortgages of noncorporate mortgagors
(other than  individuals)  originated  after  July 1,  1982,  and  mortgages  of
individuals  originated after March 2, 1984.  Such original issue discount could
arise by the charging of points by the originator of the mortgages in an  amount
greater than a statutory DE MINIMIS exception, to the extent that the points are
not  currently  deductible  under  applicable Code  provisions  or  are  not for
services provided by the lender. It is generally not anticipated that adjustable
rate Mortgage Loans  will be  treated as  issued with  original issue  discount.
However, the application of the Proposed Regulations to adjustable rate mortgage
loans  with incentive interest rates or annual or lifetime interest rate caps is
unclear and may result in original issue discount if not further clarified.
 
    Original issue discount must generally be reported as ordinary gross  income
as  it accrues  under a  constant interest  method that  takes into  account the
compounding of interest,  in advance of  the cash attributable  to such  income.
However,  Code Section 1272 provides  for a reduction in  the amount of original
issue discount  includible in  the income  of  a holder  of an  obligation  that
acquires  the obligation after its initial issuance  at a price greater than the
sum of  the original  issue  price and  the  previously accrued  original  issue
discount,  less prior payments of principal. Accordingly, if such Mortgage Loans
acquired by a Standard Certificateholder are  purchased at a price equal to  the
then  unpaid principal amount of such Mortgage Loans, no original issue discount
attributable to  the  difference  between  the  issue  price  and  the  original
principal  amount of  such Mortgage Loans  (I.E., points) will  be includible by
such holder.
 
    MARKET DISCOUNT.  Standard  Certificateholders also will  be subject to  the
market discount rules to the extent that the conditions for application of those
sections are met. Market discount on the Mortgage Loans
 
                                       85
<PAGE>
will  be determined  and will  be reported as  ordinary income  generally in the
manner  described  above  under  "Federal  Income  Tax  Consequences  for  REMIC
Certificates--Taxation of Residual Certificates--Market Discount."
 
    RECHARACTERIZATION  OF SERVICING  FEES.  If  the servicing fees  paid to the
Servicer were deemed to exceed reasonable servicing compensation, the amount  of
such  excess  would be  nondeductible under  Code  Section 162  or 212.  In this
regard, there are no authoritative guidelines for federal income tax purposes as
to either the maximum  amount of servicing compensation  that may be  considered
reasonable  in the context  of this or  similar transactions or  whether, in the
case of the Standard Certificate,  the reasonableness of servicing  compensation
should  be determined on a weighted average or loan-by-loan basis. If a loan-by-
loan basis  is  appropriate,  the  likelihood  that  such  amount  would  exceed
reasonable  servicing compensation  as to  some of  the Mortgage  Loans would be
increased. Recently issued  Internal Revenue Service  guidance indicates that  a
servicing  fee in  excess of  reasonable compensation  ("excess servicing") will
cause the Mortgage  Loans to be  treated under the  "stripped bond" rules.  Such
guidance  provides  safe  harbors  for servicing  deemed  to  be  reasonable and
requires taxpayers to demonstrate that the value of servicing fees in excess  of
such amounts is not greater than the value of the services provided.
 
    Accordingly,  if  the  Internal  Revenue  Service's  approach  is  upheld, a
Servicer who receives a servicing fee in excess of such amounts would be  viewed
as  retaining an ownership interest in a portion of the interest payments on the
Mortgage Loans.  Under  the  rules  of Code  Section  1286,  the  separation  of
ownership  of the right  to receive some or  all of the  interest payments on an
obligation from the right to  receive some or all  of the principal payments  on
the  obligation would  result in treatment  of such Mortgage  Loans as "stripped
coupons" and "stripped bonds."  Each stripped bond or  stripped coupon could  be
considered  for this purpose as a  non-interest bearing obligation issued on the
date of issue  of the  Standard Certificates,  and the  original issue  discount
rules   of  the  Code  would  apply   to  the  holder  thereof.  While  Standard
Certificateholders would still be treated as owners of beneficial interests in a
grantor trust for federal income tax purposes, the corpus of such trust could be
viewed as excluding the portion of the Mortgage Loans the ownership of which  is
attributed  to the Servicer, or  as including such portion  as a second class of
equitable interest. Applicable Treasury regulations treat such an arrangement as
a fixed investment trust, since the  multiple classes of trust interests  should
be treated as merely facilitating direct investments in the trust assets and the
existence  of  multiple classes  of ownership  interests  is incidental  to that
purpose. In general, such a  recharacterization should not have any  significant
effect   upon  the   timing  or  amount   of  income  reported   by  a  Standard
Certificateholder, except that the income reported  by a cash method holder  may
be  slightly  accelerated.  See  "Stripped  Certificates"  below  for  a further
description of the federal income tax  treatment of stripped bonds and  stripped
coupons.
 
    In  the alternative, the amount, if any, by which the servicing fees paid to
the Servicer are deemed to exceed reasonable compensation for servicing could be
treated   as   deferred   payments   of   purchase   price   by   the   Standard
Certificateholders  to  the Seller  to purchase  its  undivided interest  in the
Mortgage Loans. In  such event, the  present value of  such additional  payments
might  be included in  the Standard Certificateholder's  basis in such undivided
interests for  purposes  of determining  whether  the Standard  Certificate  was
acquired  at  a discount,  at  par, or  at  a premium.  Under  this alternative,
Standard Certificateholders may  also be  entitled to a  deduction for  unstated
interest with respect to each deferred payment. The Internal Revenue Service may
take  the position that  the specific statutory provisions  of Code Section 1286
described above override the alternative  described in this paragraph.  Standard
Certificateholders  are advised to  consult their tax advisors  as to the proper
treatment of the amounts paid to the  Servicer as set forth herein as  servicing
compensation or under either of the alternatives set forth above.
 
  SALE OR EXCHANGE OF STANDARD CERTIFICATES
 
    Upon   sale   or   exchange   of   a   Standard   Certificate,   a  Standard
Certificateholder will recognize gain  or loss equal  to the difference  between
the amount realized on the sale and its aggregate adjusted basis in the Mortgage
Loans  and other assets represented by the Standard Certificate. In general, the
aggregate
 
                                       86
<PAGE>
adjusted basis will equal the Standard Certificateholder's cost for the Standard
Certificate, increased  by the  amount of  any income  previously reported  with
respect  to the Standard Certificate  and decreased by the  amount of any losses
previously reported with respect to the  Standard Certificate and the amount  of
any  distributions received  thereon. Except as  provided above  with respect to
market discount  on  any  Mortgage  Loans,  and  except  for  certain  financial
institutions  subject to the provisions of Code Section 582(c), any such gain or
loss would be capital  gain or loss  if the Standard Certificate  was held as  a
capital asset. The preferential rates applicable to long-term capital gains were
eliminated  by the  Tax Reform  Act of  1986, but  were restored  by the Revenue
Reconciliation Act of 1990 with respect to certain individuals.
 
STRIPPED CERTIFICATES
 
  GENERAL
 
    Pursuant to Code Section 1286, the  separation of ownership of the right  to
receive some or all of the principal payments on an obligation from ownership of
the  right  to receive  some  or all  of the  interest  payments results  in the
creation of "stripped bonds"  with respect to  principal payments and  "stripped
coupons"  with respect  to interest payments.  For purposes  of this discussion,
Certificates that are subject  to those rules will  be referred to as  "Stripped
Certificates." The Certificates will be subject to those rules if (i) the Seller
or  any  of its  affiliates  retains (for  its own  account  or for  purposes of
resale), in the form of Fixed Retained Yield or otherwise, an ownership interest
in a portion of the  payments on the Mortgage Loans,  (ii) the Seller or any  of
its  affiliates is treated as having an ownership interest in the Mortgage Loans
to the  extent it  is paid  (or  retains) servicing  compensation in  an  amount
greater  than  reasonable consideration  for servicing  the Mortgage  Loans (see
"Standard Certificates--Recharacterization of  the Servicing  Fees" above),  and
(iii)  a Class of Certificates  are issued in two  or more Classes or Subclasses
representing the right to non-pro-rata percentages of the interest and principal
payments on the Mortgage Loans.
 
    In general, a  holder of a  Stripped Certificate will  be considered to  own
"stripped  bonds" with respect to its pro rata  share of all or a portion of the
principal payments on each Mortgage Loan and/or "stripped coupons" with  respect
to  its pro  rata share of  all or  a portion of  the interest  payments on each
Mortgage Loan,  including  the Stripped  Certificate's  allocable share  of  the
servicing  fees paid  to the  Servicer, to the  extent that  such fees represent
reasonable compensation  for  services  rendered.  See  discussion  above  under
"Standard  Certificates--Recharacterization of Servicing Fees." For this purpose
the servicing fees will be allocated to the Stripped Certificates in  proportion
to  the  respective  offering price  of  each  Class (or  Subclass)  of Stripped
Certificates. The holder of a Stripped Certificate generally will be entitled to
a deduction each year in respect of the servicing fees, as described above under
"Standard Certificates-- General," subject to the limitation described therein.
 
    Code Section 1286 treats a stripped  bond or a stripped coupon generally  as
an  obligation  issued at  an  original issue  discount  on the  date  that such
stripped interest is purchased. Although the treatment of Stripped  Certificates
for  federal income tax purposes is not  clear in certain respects at this time,
particularly where  such Stripped  Certificates  are issued  with respect  to  a
Mortgage  Pool  containing variable-rate  Mortgage  Loans, the  Seller  has been
advised by counsel that (i) the Trust Estate will be treated as a grantor  trust
under  subpart E, Part I of  subchapter J of the Code  and not as an association
taxable as a corporation, and (ii)  each Stripped Certificate should be  treated
as  a single installment  obligation for purposes  of calculating original issue
discount and  gain  or loss  on  disposition. This  treatment  is based  on  the
interrelationship of Code Section 1286, Code Sections 1272 through 1275, and the
Proposed  OID  Regulations.  While  under Code  Section  1286  computations with
respect to Stripped  Certificates arguably  should be made  in one  of the  ways
described  below under "Taxation  of Stripped Certificates--Possible Alternative
Characterizations," the Proposed  OID Regulations  state, in  general, that  all
debt  instruments issued in connection with the same transaction must be treated
as a single debt instrument. The  Pooling and Servicing Agreement requires  that
the  Trustee  make  and  report  all  computations  described  below  using this
aggregate approach, unless substantial legal authority requires otherwise.
 
                                       87
<PAGE>
    Furthermore, proposed Treasury regulations issued August 8, 1991 support the
treatment of a Stripped  Certificate as a single  debt instrument issued on  the
date  it is originated for purposes  of calculating any original issue discount.
In addition,  under  these proposed  regulations,  a Stripped  Certificate  that
represents  a right  to payments  of both interest  and principal  may be viewed
either as issued with original issue  discount or market discount (as  described
below),  at a DE MINIMIS original issue  discount, or, presumably, at a premium.
This  treatment  suggests  that  the  interest  component  of  such  a  Stripped
Certificate  would be treated as qualified  periodic interest under the Proposed
OID Regulations. Further, the August 1991 proposed regulations provide that  the
purchaser  of such a  Stripped Certificate will  be required to  account for any
discount as market discount  rather than original issue  discount if either  (i)
the  initial discount  with respect to  the Stripped Certificate  was treated as
zero under the DE MINIMIS rule, or (ii) no more than 100 basis points in  excess
of  reasonable servicing  is stripped off  the related Mortgage  Loans. Any such
market discount would be reportable as described above under "Federal Income Tax
Consequences for  REMIC Certificates--Taxation  of Regular  Certificates--Market
Discount,"  without regard to  the DE MINIMIS rule  therein. Pursuant to Revenue
Procedure 91-49, issued August 8, 1991,  investors using a method of  accounting
inconsistent with the above treatment must change their method of accounting and
request  the  consent  to the  Internal  Revenue  Service to  such  change  on a
statement attached to  their first timely  federal income tax  returned for  the
first tax year ending after August 8, 1991.
 
  STATUS OF STRIPPED CERTIFICATES
 
    No  specific  legal authority  exists  as to  whether  the character  of the
Stripped Certificates, for federal income tax purposes, will be the same as that
of the Mortgage Loans. Although  the issue is not  free from doubt, counsel  has
advised the Seller that Stripped Certificates owned by applicable holders should
be  considered to represent "qualifying real  property loans" within the meaning
of Code  Section 593(d)(1),  "real estate  assets" within  the meaning  of  Code
Section 856(c)(5)(A), "obligation[s] . . . principally secured by an interest in
real   property"  within  the   meaning  of  Code   Section  860G(a)(3)(A),  and
"loans...secured by an  interest in real  property" within the  meaning of  Code
Section  7701(a)(19)(C)(v),  and  interest (including  original  issue discount)
income attributable to Stripped Certificates  should be considered to  represent
"interest  on  obligations secured  by mortgages  on  real property"  within the
meaning of Code Section  856(c)(3)(B), provided that in  each case the  Mortgage
Loans  and  interest on  such  Mortgage Loans  qualify  for such  treatment. The
application of  such  Code  provisions  to  Buy-Down  Loans  is  uncertain.  See
"Standard Certificates--Tax Status" above.
 
  TAXATION OF STRIPPED CERTIFICATES
 
    ORIGINAL  ISSUE DISCOUNT.   Except as described  above under "General," each
Stripped Certificate will be considered to have been issued at an original issue
discount for federal income tax  purposes. Original issue discount with  respect
to  a Stripped Certificate must be included in ordinary income as it accrues, in
accordance  with  a  constant  interest  method  that  takes  into  account  the
compounding  of  interest,  which  may  be prior  to  the  receipt  of  the cash
attributable to such income. Based in  part on the Proposed OID Regulations  and
the  amendments to the original issue discount  sections of the Code made by the
1986 Act,  counsel has  advised the  Seller that  the amount  of original  issue
discount  required  to be  included  in the  income of  a  holder of  a Stripped
Certificate (referred to in this  discussion as a "Stripped  Certificateholder")
in  any taxable year likely will be  computed generally as described above under
"Federal Income  Tax Consequences  for REMIC  Certificates--Taxation of  Regular
Certificates--Original   Issue   Discount"   and  "--   Variable   Rate  Regular
Certificates." However, with  the apparent exception  of a Stripped  Certificate
issued  with  DE  MINIMIS  original  issue  discount  as  described  above under
"General," the issue price of a Stripped Certificate will be the purchase  price
paid  by each holder thereof,  and the stated redemption  price at maturity will
include the  aggregate  amount  of the  payments  to  be made  on  the  Stripped
Certificate  to such Stripped Certificateholder, presumably under the Prepayment
Assumption.
 
    If the Mortgage Loans  prepay at a  rate either faster  or slower than  that
under  the Prepayment Assumption, a  Stripped Certificateholder's recognition of
original issue discount will be either accelerated or
 
                                       88
<PAGE>
decelerated and  the amount  of  such original  issue  discount will  be  either
increased  or decreased  depending on  the relative  interests in  principal and
interest on each Mortgage Loan represented by such Stripped  Certificateholder's
Stripped  Certificate. While the matter is not  free from doubt, the holder of a
Stripped Certificate should  be entitled  in the  year that  it becomes  certain
(assuming  no further prepayments) that the holder will not recover a portion of
its adjusted basis in  such Stripped Certificate to  recognize an ordinary  loss
equal to such portion of unrecoverable basis.
 
    As  an alternative to the method described  above, the fact that some or all
of the interest payments with respect  to the Stripped Certificates will not  be
made  if the Mortgage  Loans are prepaid  could lead to  the interpretation that
such interest payments are "contingent" within  the meaning of the Proposed  OID
Regulations. If the rules of the Proposed OID Regulations relating to contingent
payments  apply, treatment of a Stripped Certificate under such rules depends on
whether the aggregate amount of  principal payments, if any,  to be made on  the
Stripped  Certificate  is less  than or  greater  than its  issue price.  If the
aggregate principal payments are greater than  or equal to the issue price,  the
principal  payments would be treated as a separate installment obligation issued
at a price equal  to the purchase  price for the  Stripped Certificate. In  such
case,  original issue discount would be  calculated and accrued under the method
described above without consideration of  the interest payments with respect  to
the  Stripped Certificate. Such payments of  interest would be includible in the
Stripped Certificateholder's  gross income  in  the taxable  year in  which  the
amounts  become fixed. If the aggregate amount  of principal payments to be made
on the  Stripped Certificate  is less  than  its issue  price, each  payment  of
principal  would be treated as a return of basis. Each payment of interest would
be treated as includible in gross income to the extent of the applicable Federal
rate under  Code  Section 1274(d),  as  applied to  the  adjusted basis  of  the
Stripped Certificate, while amounts received in excess of the applicable Federal
rate,  as applied to  the adjusted basis  of the Stripped  Certificate, would be
characterized as a return of basis  until the total amount of interest  payments
treated  as a return of basis equalled the excess of the purchase price over the
aggregate stated principal payments. Any additional interest payments thereafter
would be treated as ordinary income. While not free from doubt, counsel for  the
Seller  believes that  uncertainty as  to the payment  of interest  arising as a
result of the possibility of prepayment  of the Mortgage Loans should not  cause
the  contingent payment  rules under  the Proposed  OID Regulations  to apply to
interest with respect to the Stripped Certificates.
 
    SALE OR EXCHANGE OF STRIPPED CERTIFICATES.   Sale or exchange of a  Stripped
Certificate  prior to  its maturity  will result  in gain  or loss  equal to the
difference,  if   any,   between   the  amount   received   and   the   Stripped
Certificateholder's  adjusted basis  in such Stripped  Certificate, as described
above under "Federal Income Tax Consequences for REMIC Certificates--Taxation of
Regular Certificates--Sale or Exchange of  Regular Certificates." To the  extent
that  a  subsequent  purchaser's purchase  price  is exceeded  by  the remaining
payments on  the  Stripped  Certificates,  such  subsequent  purchaser  will  be
required  for federal income tax purposes to accrue and report such excess as if
it were original issue discount in the  manner described above. It is not  clear
for  this purpose whether the assumed prepayment rate  that is to be used in the
case  of  a   Stripped  Certificateholder  other   than  an  original   Stripped
Certificateholder should be the Prepayment Assumption or a new rate based on the
circumstances at the date of subsequent purchase.
 
    PURCHASE OF MORE THAN ONE CLASS OF STRIPPED CERTIFICATES.  Where an investor
purchases  more than one Class of Stripped Certificates, it is currently unclear
whether for federal income  tax purposes such  Classes of Stripped  Certificates
should  be treated separately or aggregated  for purposes of the rules described
above.
 
    POSSIBLE  ALTERNATIVE  CHARACTERIZATIONS.    The  characterizations  of  the
Stripped  Certificates discussed above are not the only possible interpretations
of the applicable Code provisions.  For example, the Stripped  Certificateholder
may be treated as the owner of (i) one installment obligation consisting of such
Stripped  Certificate's pro rata share of the payments attributable to principal
on each Mortgage  Loan and a  second installment obligation  consisting of  such
Stripped  Certificate's pro rata share of  the payments attributable to interest
on each Mortgage Loan, (ii) as many stripped bonds or stripped coupons as  there
are  scheduled payments of  principal and/or interest on  each Mortgage Loan, or
(iii) a separate installment obligation for
 
                                       89
<PAGE>
each Mortgage Loan, representing  the Stripped Certificate's  pro rata share  of
payments  of  principal  and/or  interest  to  be  made  with  respect  thereto.
Alternatively, the holder of one or more Classes of Stripped Certificates may be
treated as  the  owner of  a  pro rata  fractional  undivided interest  in  each
Mortgage  Loan  to the  extent  that such  Stripped  Certificate, or  Classes of
Stripped Certificates in the aggregate, represent  the same pro rata portion  of
principal  and  interest on  each such  Mortgage  Loan, and  a stripped  bond or
stripped coupon (as the  case may be), treated  as an installment obligation  or
contingent payment obligation, as to the remainder.
 
    Because of these possible varying characterizations of Stripped Certificates
and   the  resultant   differing  treatment  of   income  recognition,  Stripped
Certificateholders are urged  to consult  their own tax  advisors regarding  the
proper treatment of Stripped Certificates for federal income tax purposes.
 
REPORTING REQUIREMENTS AND BACKUP WITHHOLDING
 
    The  Trustee will furnish,  within a reasonable  time after the  end of each
calendar year, to each Standard Certificateholder or Stripped  Certificateholder
at  any time during such year, such information (prepared on the basis described
above) as  the  Trustee  deems to  be  necessary  or desirable  to  enable  such
Certificateholders to prepare their federal income tax returns. Such information
will  include the amount of original issue discount accrued on Certificates held
by  persons   other  than   Certificateholders  exempted   from  the   reporting
requirements. The amount required to be reported by the Trustee may not be equal
to  the proper  amount of  original issue  discount required  to be  reported as
taxable income by a Certificateholder, other than an original Certificateholder.
The Trustee will  also file such  original issue discount  information with  the
Internal  Revenue Service.  If a Certificateholder  fails to  supply an accurate
taxpayer identification number or  if the Secretary  of the Treasury  determines
that  a  Certificateholder has  not reported  all  interest and  dividend income
required to be shown  on his federal income  tax return, 20% backup  withholding
may  be required in respect of any reportable payments, as described above under
"Federal Income Tax Consequences for REMIC Certificates--Backup Withholding."
 
TAXATION OF CERTAIN FOREIGN INVESTORS
 
    To the extent that a Standard Certificate or Stripped Certificate  evidences
ownership in Mortgage Loans that are issued on or before July 18, 1984, interest
or  original issue discount  paid by the  person required to  withhold tax under
Code Section 1441 or 1442 to nonresident aliens, foreign corporations, or  other
non-U.S.  persons ("foreign  persons") generally will  be subject  to 30% United
States withholding tax, or such lower rate as may be provided for interest by an
applicable tax  treaty.  Accrued  original  issue  discount  recognized  by  the
Standard Certificateholder or Stripped Certificateholder on the sale or exchange
of  such a Certificate  also will be subject  to federal income  tax at the same
rate.
 
    Treasury regulations provide that interest  or original issue discount  paid
by  the  Trustee  or other  withholding  agent  to a  foreign  person evidencing
ownership interest  in  Mortgage  Loans  issued after  July  18,  1984  will  be
"portfolio interest" and will be treated in the manner, and such persons will be
subject  to the same  certification requirements described  above under "Federal
Income Tax  Consequences for  REMIC  Certificates--Taxation of  Certain  Foreign
Investors--Regular Certificates."
 
                              ERISA CONSIDERATIONS
 
GENERAL
 
    The  Employee Retirement Income Security Act  of 1974, as amended ("ERISA"),
imposes certain requirements on those employee benefit plans to which it applies
("Plans") and on those persons who  are fiduciaries with respect to such  Plans.
The  following  is  a  general  discussion  of  such  requirements,  and certain
applicable exceptions to and  administrative exemptions from such  requirements.
For  purposes of this discussion, a person  investing on behalf of an individual
retirement account established under Code Section 408 (an "IRA") is regarded  as
a fiduciary and the IRA as a Plan.
 
                                       90
<PAGE>
    Before purchasing any Certificates, a Plan fiduciary should consult with its
counsel  and determine  whether there  exists any  prohibition to  such purchase
under the requirements of ERISA, whether prohibited transaction exemptions  such
as  PTE 83-1  or any  individual administrative  exemption (as  described below)
applies, including whether the appropriate conditions set forth therein would be
met, or whether  any statutory prohibited  transaction exemption is  applicable,
and further should consult the applicable Prospectus Supplement relating to such
Series of Certificates.
 
CERTAIN REQUIREMENTS UNDER ERISA
 
    GENERAL.   In  accordance with  ERISA's general  fiduciary standards, before
investing in a Certificate a Plan fiduciary should determine whether to do so is
permitted under the governing Plan instruments  and is appropriate for the  Plan
in view of its overall investment policy and the composition and diversification
of  its  portfolio.  A  Plan  fiduciary  should  especially  consider  the ERISA
requirement of investment  prudence and  the sensitivity  of the  return on  the
Certificates  to the rate of principal repayments (including prepayments) on the
Mortgage Loans, as discussed in "Prepayment and Yield Considerations" herein.
 
    PARTIES IN INTEREST/DISQUALIFIED  PERSONS.  Other  provisions of ERISA  (and
corresponding  provisions of  the Code) prohibit  certain transactions involving
the assets of a Plan and persons who have certain specified relationships to the
Plan  (so-called  "parties  in  interest"   within  the  meaning  of  ERISA   or
"disqualified persons" within the meaning of the Code). The Seller, the Servicer
or the Trustee or certain affiliates thereof might be considered or might become
"parties  in interest" or "disqualified persons" with  respect to a Plan. If so,
the acquisition or holding of Certificates by or on behalf of such Plan could be
considered to give  rise to  a "prohibited  transaction" within  the meaning  of
ERISA  and the Code  unless an administrative exemption  described below or some
other exemption is available.
 
    Special caution should be exercised before the assets of a Plan are used  to
purchase a Certificate if, with respect to such assets, the Seller, the Servicer
or  the Trustee  or an affiliate  thereof either: (a)  has investment discretion
with respect to the investment of such assets of such Plan; or (b) has authority
or responsibility to give, or regularly gives, investment advice with respect to
such assets for a fee  and pursuant to an  agreement or understanding that  such
advice  will serve as a  primary basis for investment  decisions with respect to
such assets and  that such  advice will be  based on  the particular  investment
needs of the Plan.
 
    DELEGATION  OF FIDUCIARY DUTY.   Further, if the assets  included in a Trust
Estate were  deemed to  constitute Plan  assets, it  is possible  that a  Plan's
investment in the Certificates might be deemed to constitute a delegation, under
ERISA,  of the duty to manage Plan assets by the fiduciary deciding to invest in
the Certificates,  and certain  transactions involved  in the  operation of  the
Trust  Estate might be deemed to  constitute prohibited transactions under ERISA
and the Code. Neither ERISA nor the Code define the term "plan assets."
 
    The U.S. Department of Labor (the "Department") has issued regulations  (the
"Regulations")  concerning whether  or not  a Plan's  assets would  be deemed to
include an interest  in the  underlying assets  of an  entity (such  as a  Trust
Estate)  for  purposes of  the reporting  and  disclosure and  general fiduciary
responsibility provisions of ERISA,  as well as  for the prohibited  transaction
provisions  of ERISA  and the  Code, if the  Plan acquires  an "equity interest"
(such as a Certificate) in such an entity.
 
    Certain exceptions  are provided  in the  Regulations whereby  an  investing
Plan's assets would be deemed merely to include its interest in the Certificates
instead  of being deemed to include an interest in the assets of a Trust Estate.
However, it  cannot be  predicted in  advance nor  can there  be any  continuing
assurance  whether such exceptions may be met,  because of the factual nature of
certain of the  rules set  forth in  the Regulations.  For example,  one of  the
exceptions  in the  Regulations states that  the underlying assets  of an entity
will not  be considered  "plan assets"  if less  than 25%  of the  value of  all
classes of equity
 
                                       91
<PAGE>
interests  are held  by "benefit  plan investors,"  which are  defined as Plans,
IRAs, and employee benefit plans not subject to ERISA (for example, governmental
plans), but this exception  is tested immediately after  each acquisition of  an
equity  interest in the entity whether upon initial issuance or in the secondary
market.
 
ADMINISTRATIVE EXEMPTIONS
 
    INDIVIDUAL   ADMINISTRATIVE   EXEMPTIONS.       Several   underwriters    of
mortgage-backed  securities  have  applied  for  and  obtained  ERISA prohibited
transaction exemptions (each,  an "Underwriter's Exemption")  which are in  some
respects  broader than  Prohibited Transaction  Class Exemption  83-1 (described
below). Such  exemptions can  only apply  to mortgage-backed  securities  which,
among  other conditions,  are sold  in an  offering with  respect to  which such
underwriter serves as the  sole or a  managing underwriter, or  as a selling  or
placement  agent. If  such an Underwriter's  Exemption might be  applicable to a
Series of Certificates,  the related  Prospectus Supplement will  refer to  such
possibility.
 
    Among  the conditions that must be  satisfied for an Underwriter's Exemption
to apply are the following:
 
        (1) The acquisition of Certificates by a Plan is on terms (including the
    price for the Certificates) that  are at least as  favorable to the Plan  as
    they would be in an arm's length transaction with an unrelated party;
 
        (2)  The rights and interests evidenced  by Certificates acquired by the
    Plan are not  subordinated to the  rights and interests  evidenced by  other
    Certificates of the Trust Estate;
 
        (3)  The Certificates acquired by the Plan have received a rating at the
    time of such  acquisition that is  one of the  three highest generic  rating
    categories  from  either  Standard  &  Poors  Corporation  ("S&P"),  Moody's
    Investors Service, Inc.  ("Moody's"), Duff  & Phelps Rating  Co. ("D&P")  or
    Fitch Investors Service, Inc. ("Fitch");
 
        (4)  The Trustee  must not be  an affiliate  of any other  member of the
    Restricted Group (as defined below);
 
        (5) The sum of all payments made  to and retained by the underwriter  in
    connection  with the distribution  of Certificates represents  not more than
    reasonable compensation for  underwriting the Certificates.  The sum of  all
    payments  made to and retained  by the Seller pursuant  to the assignment of
    the Mortgage Loans  to the Trust  Estate represents not  more than the  fair
    market  value of such  Mortgage Loans. The  sum of all  payments made to and
    retained by the Servicer (and any  other servicer) represents not more  than
    reasonable  compensation for  such person's  services under  the Pooling and
    Servicing Agreement and reimbursement  of such person's reasonable  expenses
    in connection therewith; and
 
        (6)  The Plan investing in the  Certificates is an "accredited investor"
    as defined in Rule 501(a)(1) of Regulation D of the Securities and  Exchange
    Commission under the Securities Act of 1933.
 
    The Trust Estate must also meet the following requirements:
 
            (i)  the assets of the Trust Estate must consist solely of assets of
       the type  that  have been  included  in  other investment  pools  in  the
       marketplace;
 
           (ii) certificates in such other investment pools must have been rated
       in  one of the three highest rating  categories of S&P, Moody's, Fitch or
       D&P for  at  least  one year  prior  to  the Plan's  acquisition  of  the
       Certificates; and
 
           (iii)  certificates  evidencing  interests in  such  other investment
       pools must have been purchased by investors other than Plans for at least
       one year prior to any Plan's acquisition of the Certificates.
 
                                       92
<PAGE>
    If the conditions to  an Underwriter's Exemption are  met, whether or not  a
Plan's  assets would be deemed to include  an ownership interest in the Mortgage
Loans  in  a  mortgage  pool,  the  acquisition,  holding  and  resale  of   the
Certificates by Plans would be exempt from the prohibited transaction provisions
of ERISA and the Code.
 
    Moreover,  an  Underwriter's  Exemption  can  provide  relief  from  certain
self-dealing/conflict of interest  prohibited transactions that  may occur if  a
Plan  fiduciary causes a Plan to acquire Certificates in a Trust Estate in which
the fiduciary (or its affiliate) is an obligor on the Mortgage Loans held in the
Trust Estate provided  that, among  other requirements: (i)  in the  case of  an
acquisition  in connection with  the initial issuance  of Certificates, at least
fifty percent of  each class  of Certificates in  which Plans  have invested  is
acquired  by  persons independent  of the  Restricted Group  and at  least fifty
percent of the  aggregate interest in  the Trust Estate  is acquired by  persons
independent  of the Restricted Group (as defined below); (ii) such fiduciary (or
its affiliate) is an obligor  with respect to five percent  or less of the  fair
market  value of  the Mortgage  Loans contained in  the Trust  Estate; (iii) the
Plan's investment  in Certificates  of  any Class  does not  exceed  twenty-five
percent  of all of the Certificates of that Class outstanding at the time of the
acquisition and (iv) immediately after the acquisition no more than  twenty-five
percent  of  the assets  of the  Plan with  respect  to which  such person  is a
fiduciary are invested in Certificates representing  an interest in one or  more
trusts containing assets sold or served by the same entity.
 
    An  Underwriter's Exemption does not apply to Plans sponsored by the Seller,
the underwriter specified in the applicable Prospectus Supplement, the  Trustee,
the  Servicer, any obligor with respect to  Mortgage Loans included in the Trust
Estate  constituting  more  than  five  percent  of  the  aggregate  unamortized
principal  balance of the assets  in the Trust Estate,  or any affiliate of such
parties (the "Restricted Group").
 
    PTE  83-1.    Prohibited  Transaction  Class  Exemption  83-1  for   Certain
Transactions  Involving  Mortgage Pool  Investment  Trusts ("PTE  83-1") permits
certain transactions  involving the  creation,  maintenance and  termination  of
certain  residential mortgage pools  and the acquisition  and holding of certain
residential mortgage pool pass-through certificates by Plans, whether or not the
Plan's assets would be deemed to include an ownership interest in the  mortgages
in  such mortgage pools, and whether or not such transactions would otherwise be
prohibited under ERISA.
 
    The term "mortgage pool pass-through certificate" is defined in PTE 83-1  as
"a  certificate  representing a  beneficial undivided  fractional interest  in a
mortgage pool and  entitling the holder  of such a  certificate to  pass-through
payment  of principal and interest from the pooled mortgage loans, less any fees
retained by the pool sponsor."  It appears that, for  purposes of PTE 83-1,  the
term  "mortgage pool pass-through certificate" would include Certificates issued
in a single Class or in multiple Classes that evidence the beneficial  ownership
of  both a  specified percentage  of future  interest payments  (after permitted
deductions) and a specified percentage of  future principal payments on a  Trust
Estate.
 
    However,  it appears that PTE  83-1 does or might  not apply to the purchase
and holding of (a) Certificates that evidence the beneficial ownership only of a
specified percentage of future interest payments (after permitted deductions) on
a Trust Estate or only of a specified percentage of future principal payments on
a Trust Estate, (b) Residual Certificates, (c) Certificates evidencing ownership
interests in a Trust Estate which includes Mortgage Loans secured by multifamily
residential properties or shares issued by cooperative housing corporations,  or
(d) Certificates which are subordinated to other Classes of Certificates of such
Series.  Accordingly, unless exemptive relief other than PTE 83-1 applies, Plans
should not purchase any such Certificates.
 
    PTE 83-1 sets forth  "general conditions" and  "specific conditions" to  its
applicability.  Section  II  of  PTE  83-1  sets  forth  the  following  general
conditions to the application of the exemption: (i) the maintenance of a  system
of  insurance or other protection for the  pooled mortgage loans or the property
securing such loans, and for indemnifying certificateholders against  reductions
in  pass-through payments due  to property damage or  defaults in loan payments;
(ii) the  existence of  a pool  trustee  who is  not an  affiliate of  the  pool
sponsor;  and  (iii) a  requirement that  the sum  of all  payments made  to and
retained by the pool sponsor, and
 
                                       93
<PAGE>
all funds  inuring to  the  benefit of  the  pool sponsor  as  a result  of  the
administration  of  the mortgage  pool, must  represent  not more  than adequate
consideration for selling  the mortgage loans  plus reasonable compensation  for
services  provided by the pool  sponsor to the pool.  The system of insurance or
protection referred to  in clause  (i) above  must provide  such protection  and
indemnification  up to an amount not less than the greater of one percent of the
aggregate unpaid  principal  balance  of  the pooled  mortgages  or  the  unpaid
principal  balance of the largest mortgage in  the pool. It should be noted that
in promulgating PTE 83-1 (and a  predecessor exemption), the Department did  not
have  under its consideration interests in pools  of the exact nature as some of
the Certificates described herein.
 
EXEMPT PLANS
 
    Employee benefit plans which are  governmental plans (as defined in  Section
3(32) of ERISA), and certain church plans (as defined in Section 3(33) of ERISA)
are  not subject to ERISA requirements and  assets of such plans may be invested
in Certificates without regard to  the ERISA considerations described above  but
such  plans may  be subject  to the provisions  of other  applicable federal and
state law.
 
UNRELATED BUSINESS TAXABLE INCOME--RESIDUAL CERTIFICATES
 
    The purchase  of  a  Residual  Certificate  by  any  employee  benefit  plan
qualified  under Code Section 401(a) and exempt from taxation under Code Section
501(a), including most  varieties of ERISA  Plans, may give  rise to  "unrelated
business  taxable  income"  as  described in  Code  Sections  511-515  and 860E.
Further,  prior  to  the  purchase  of  Residual  Certificates,  a   prospective
transferee  may be required to  provide an affidavit to  a transferor that it is
not, nor is it purchasing a  Residual Certificate on behalf of, a  "Disqualified
Organization,"  which term as defined above includes certain tax-exempt entities
not subject to Code Section 511 such as certain governmental plans, as discussed
above under the caption "Certain Federal Income Tax Consequences--Federal Income
Tax Consequences for REMIC Certificates--Taxation of Residual
Certificates--Tax-Related Restrictions on Transfer of Residual
Certificates--Disqualified Organizations."
 
    DUE TO THE COMPLEXITY OF THESE RULES AND THE PENALTIES IMPOSED UPON  PERSONS
INVOLVED IN PROHIBITED TRANSACTIONS, IT IS PARTICULARLY IMPORTANT THAT POTENTIAL
INVESTORS  WHO ARE  PLAN FIDUCIARIES  CONSULT WITH  THEIR COUNSEL  REGARDING THE
CONSEQUENCES UNDER ERISA OF THEIR ACQUISITION AND OWNERSHIP OF CERTIFICATES.
 
    THE SALE OF CERTIFICATES TO A PLAN IS IN NO RESPECT A REPRESENTATION BY  THE
SELLER  OR THE  APPLICABLE UNDERWRITER THAT  THIS INVESTMENT  MEETS ALL RELEVANT
LEGAL REQUIREMENTS  WITH  RESPECT  TO  INVESTMENTS BY  PLANS  GENERALLY  OR  ANY
PARTICULAR  PLAN, OR THAT THIS INVESTMENT  IS APPROPRIATE FOR PLANS GENERALLY OR
ANY PARTICULAR PLAN.
 
                                LEGAL INVESTMENT
 
    Except for Standard  Certificates which  are not rated,  as discussed  below
under  "Rating", the  Certificates other than  Residual Certificates  (and if so
specified in the related Prospectus Supplement, the Residual Certificates)  will
constitute  "mortgage related securities" for purposes of the Secondary Mortgage
Market Enhancement Act of 1984 (the "Enhancement Act") and as such will be legal
investments  for  persons,  trusts,  corporations,  partnerships,  associations,
business   trusts  and   business  entities   (including  but   not  limited  to
state-chartered savings banks, commercial  banks, savings and loan  associations
and  insurance  companies, as  well as  trustees  and state  government employee
retirement systems) created pursuant to or existing under the laws of the United
States or of  any state  (including the District  of Columbia  and Puerto  Rico)
whose  authorized investments are subject to state regulation to the same extent
that, under applicable law, obligations issued by or guaranteed as to  principal
and  interest  by the  United States  or any  agency or  instrumentality thereof
constitute legal investments for such entities. Pursuant to the Enhancement Act,
a number of states enacted legislation, on or before the October 3, 1991 cut-off
for such enactments, limiting to varying extents the ability of certain entities
(in particular insurance companies) to
 
                                       94
<PAGE>
invest in mortgage related securities, in  most cases by requiring the  affected
investors  to rely solely upon existing state  law, and not the Enhancement Act.
Accordingly, the investors affected  by such legislation  will be authorized  to
invest in the Certificates only to the extent provided in such legislation.
 
    The Enhancement Act also amended the legal investment authority of federally
chartered   depository  institutions  as  follows:   federal  savings  and  loan
associations and federal  savings banks may  invest in, sell  or otherwise  deal
with  mortgage related  securities without  limitation as  to the  percentage of
their assets represented thereby, federal  credit unions may invest in  mortgage
related  securities, and national banks may purchase mortgage related securities
for their own account without regard to the limitations generally applicable  to
investment  securities set forth  in 12 U.S.C. Section  24 (Seventh), subject in
each case to such regulations as the applicable federal regulatory authority may
prescribe. In  this connection,  federal credit  unions should  review  National
Credit  Union  Administration Letter  to Credit  Unions No.  96, as  modified by
Letter to Credit  Unions No. 108,  which includes guidelines  to assist  federal
credit  unions in making  investment decisions for  mortgage related securities.
The National Credit Union Administration  has adopted rules, effective  December
2,  1991, that prohibit federal credit unions from investing in certain mortgage
related  securities  such  as  the   Residual  Certificates  and  the   Stripped
Certificates, except under limited circumstances.
 
    All  depository institutions  considering an investment  in the Certificates
should review the "Supervisory Policy Statement on Securities Activities"  dated
January  28, 1992 (the "Policy Statement") of the Federal Financial Institutions
Examination Council. The Policy Statement, which  has been adopted by the  Board
of  Governors  of  the Federal  Reserve  System, the  Federal  Deposit Insurance
Corporation,  the  Comptroller  of  the  Currency  and  the  Office  of   Thrift
Supervision,  effective  February 10,  1992, and  by  the National  Credit Union
Administration (with certain modifications), effective June 26, 1992,  prohibits
depository   institutions   from  investing   in  certain   "high-risk  mortgage
securities" (including  securities such  as certain  series and  classes of  the
Certificates),  except  under  limited  circumstances,  and  sets  forth certain
investment practices deemed to be unsuitable for regulated institutions.
 
    Institutions whose  investment  activities  are  subject  to  regulation  by
federal  or state authorities should review policies and guidelines adopted from
time to time by such authorities  before purchasing any of the Certificates,  as
certain  Series or Classes (in particular,  Stripped Certificates) may be deemed
unsuitable investments, or may otherwise  be restricted, under such policies  or
guidelines (in certain instances irrespective of the Enhancement Act).
 
    The  foregoing  does  not  take  into  consideration  the  applicability  of
statutes,  rules,  regulations,  orders,  guidelines  or  agreements   generally
governing  investments made by a particular investor, including, but not limited
to, "prudent investor" provisions, percentage-of-assets limits, provisions which
may  restrict   or   prohibit   investment   in   securities   which   are   not
"interest-bearing"  or  "income-paying," and,  with  regard to  any Certificates
issued in book-entry form, provisions which may restrict or prohibit investments
in securities which are issued in book-entry form.
 
    All investors should consult  with their own  legal advisors in  determining
whether  and to  what extent the  Certificates constitute  legal investments for
such investors.
 
                              PLAN OF DISTRIBUTION
 
    The Certificates are being offered hereby  in Series through one or more  of
the  methods  described below.  The  applicable Prospectus  Supplement  for each
Series will describe the method of  offering being utilized for that Series  and
will  state the public offering or purchase  price of each Class of Certificates
of such Series, or the method by which  such price is to be determined, and  the
net proceeds to the Seller from such sale.
 
                                       95
<PAGE>
    The  Certificates will be offered through the following methods from time to
time and  offerings may  be made  concurrently through  more than  one of  these
methods  or  an offering  of a  particular  Series of  Certificates may  be made
through a combination of two or more of these methods:
 
        1.  By negotiated firm commitment underwriting and public re-offering by
    underwriters specified in the applicable Prospectus Supplement;
 
        2.  By placements by the Seller with investors through dealers; and
 
        3.  By direct placements by the Seller with investors.
 
    If underwriters are used  in a sale of  any Certificates, such  Certificates
will  be acquired by  the underwriters for  their own account  and may be resold
from  time  to  time   in  one  or   more  transactions,  including   negotiated
transactions,  at  a fixed  public offering  price  or at  varying prices  to be
determined at the  time of  sale or  at the  time of  commitment therefor.  Firm
commitment  underwriting  and  public  reoffering by  underwriters  may  be done
through underwriting syndicates or through one  or more firms acting alone.  The
specific managing underwriter or underwriters, if any, with respect to the offer
and  sale of a particular Series of Certificates  will be set forth on the cover
of the Prospectus Supplement  applicable to such Series  and the members of  the
underwriting syndicate, if any, will be named in such Prospectus Supplement. The
Prospectus  Supplement will describe any discounts and commissions to be allowed
or paid  by  the  Seller  to the  underwriters,  any  other  items  constituting
underwriting  compensation and  any discounts and  commissions to  be allowed or
paid to the  dealers. The  obligations of the  underwriters will  be subject  to
certain  conditions precedent.  The underwriters with  respect to a  sale of any
Class of Certificates will be obligated to purchase all such Certificates if any
are purchased. The Seller  and PHMC will  indemnify the applicable  underwriters
against  certain civil  liabilities, including liabilities  under the Securities
Act of 1933, as amended (the "Act").
 
    The Prospectus Supplement with respect to any Series of Certificates offered
other than through underwriters will contain information regarding the nature of
such offering  and any  agreements to  be entered  into between  the Seller  and
dealers and/or the Seller and purchasers of Certificates of such Series.
 
    Purchasers  of Certificates, including dealers,  may, depending on the facts
and circumstances of such purchases, be  deemed to be "underwriters" within  the
meaning   of  the  Act  in  connection  with  reoffers  and  sales  by  them  of
Certificates. Certificateholders  should consult  with their  legal advisors  in
this regard prior to any such reoffer or sale.
 
    If   specified  in  the  Prospectus  Supplement  relating  to  a  Series  of
Certificates, the Seller or  any affiliate thereof may  purchase some or all  of
one  or more  Classes of  Certificates of  such Series  from the  underwriter or
underwriters at a price  specified or described  in such Prospectus  Supplement.
Such purchaser may thereafter from time to time offer and sell, pursuant to this
Prospectus,  some or all of such Certificates so purchased directly, through one
or more  underwriters to  be designated  at the  time of  the offering  of  such
Certificates  or through dealers acting as agent and/or principal. Such offering
may be restricted in  the matter specified in  such Prospectus Supplement.  Such
transactions may be effected at market prices prevailing at the time of sale, at
negotiated prices or at fixed prices. The underwriters and dealers participating
in  such purchaser's offering  of such Certificates  may receive compensation in
the form of underwriting discounts or  commissions from such purchaser and  such
dealers  may receive commissions from the investors purchasing such Certificates
for whom they may act as agent  (which discounts or commissions will not  exceed
those  customary  in  those types  of  transactions involved).  Any  dealer that
participates in the  distribution of such  Certificates may be  deemed to be  an
"underwriter"  within the meaning of the  Act, and any commissions and discounts
received by such dealer  and any profit  on the resale  of such Certificates  by
such  dealer might be deemed to  be underwriting discounts and commissions under
the Act.
 
    One  or  more  affiliates  of   the  Seller  and  the  Servicer,   including
Prudential-Bache Securities Inc. (which conducts its corporate, governmental and
institutional business under the name Prudential-Bache Capital Funding), may act
as  underwriter or dealer with  respect to Certificates of  any Series. Any such
affiliate will be identified in the applicable Prospectus Supplement.
 
                                       96
<PAGE>
                                 LEGAL MATTERS
 
    Certain legal matters  will be  passed upon  for the  Seller by  Cadwalader,
Wickersham  & Taft, New York, New York and for any underwriters by Brown & Wood,
New York, New York.
 
                                     RATING
 
    It is  a condition  to the  issuance of  the Stripped  Certificates and  the
Multi-Class  Certificates of  any Series that  they be  rated in one  of the two
highest categories by at least one  Rating Agency. Standard Certificates may  or
may not be rated by a Rating Agency.
 
    A  securities rating is not a recommendation to buy, sell or hold securities
and may be subject to revision or withdrawal at any time by the assigning Rating
Agency. Each securities rating  should be evaluated  independently of any  other
rating.
 
                                       97
<PAGE>
                        INDEX OF SIGNIFICANT DEFINITIONS
 
<TABLE>
<CAPTION>
TERM                                                                                                            PAGE
- -----------------------------------------------------------------------------------------------------------     -----
<S>                                                                                                          <C>
Aggregate Losses...........................................................................................          34
Assumed Reinvestment Rate..................................................................................          33
Balloon Loan...............................................................................................          15
Balloon Period.............................................................................................          15
Buy-Down Fund..............................................................................................          15
Buy-Down Loans.............................................................................................          15
Certificate Account........................................................................................          48
Certificates...............................................................................................           1
Class......................................................................................................           1
Code.......................................................................................................          11
Compound Interest Certificates.............................................................................          24
Cross-Over Date............................................................................................          28
Curtailments...............................................................................................          24
Cut-Off Date...............................................................................................           8
Depository.................................................................................................          48
Determination Date.........................................................................................          24
Distributable Amount.......................................................................................          24
Distribution Date..........................................................................................           8
Due Date...................................................................................................          13
Due Period.................................................................................................          32
Eligible Investments.......................................................................................          35
ERISA......................................................................................................          11
FDIC.......................................................................................................          49
FHLMC......................................................................................................          14
Fixed Retained Yield.......................................................................................           9
FNMA.......................................................................................................          14
Initial Deposit............................................................................................          34
Interest Rate..............................................................................................           1
Last Scheduled Distribution Date...........................................................................          33
Late Payment...............................................................................................          25
Late Payment Period........................................................................................          25
Liquidation Proceeds.......................................................................................          49
Loan-to-Value Ratio........................................................................................          13
Mortgage Interest Rate.....................................................................................           9
Mortgage Loans.............................................................................................           1
Mortgage Notes.............................................................................................          12
Mortgaged Properties.......................................................................................          12
Mortgages..................................................................................................          12
Multi-Class Certificate Distribution Amount................................................................          31
Multi-Class Certificates...................................................................................           1
Net Foreclosure Profits....................................................................................          26
Net Mortgage Interest Rate.................................................................................           9
OTS........................................................................................................          65
Payment Deficiencies.......................................................................................          34
Pass-Through Rate..........................................................................................           9
Percentage Certificates....................................................................................          23
Periodic Advances..........................................................................................          10
PHMC.......................................................................................................           1
PMCC.......................................................................................................          42
Pool Distribution Amount...................................................................................          26
Pool Scheduled Principal Balance...........................................................................          29
Pool Value.................................................................................................          32
</TABLE>
 
                                       98
<PAGE>
<TABLE>
<CAPTION>
TERM                                                                                                            PAGE
- -----------------------------------------------------------------------------------------------------------     -----
<S>                                                                                                          <C>
Pool Value Group...........................................................................................          32
Pooling and Servicing Agreement............................................................................           7
Prepayment Interest Shortfall..............................................................................          25
Prudential Insurance.......................................................................................           7
Rating Agency..............................................................................................          11
Record Date................................................................................................           9
Registration Statement.....................................................................................           2
Regular Certificateholder..................................................................................          69
Regular Certificates.......................................................................................          22
REMIC......................................................................................................           1
Residual Certificates......................................................................................          22
Scheduled Principal........................................................................................          24
Scheduled Principal Balance................................................................................          25
Seller.....................................................................................................           1
Senior Certificates........................................................................................           1
Senior Class...............................................................................................          24
Senior Class Carryover Shortfall...........................................................................          27
Senior Class Distributable Amount..........................................................................          24
Senior Class Distribution Amount...........................................................................          28
Senior Class Principal Portion.............................................................................          24
Senior Class Pro Rata Share................................................................................          27
Senior Class Shortfall.....................................................................................          27
Senior Class Shortfall Accruals............................................................................          27
Series.....................................................................................................           1
Servicer...................................................................................................           1
Servicing Fee..............................................................................................           9
Shifting Interest Certificate..............................................................................          23
Special Distributions......................................................................................          33
Special Hazard Loss Amount.................................................................................          37
Special Hazard Mortgage Loan...............................................................................          37
Special Hazard Termination Date............................................................................          37
Specified Subordination Reserve Fund Balance...............................................................          34
Spread.....................................................................................................          32
Standard Certificates......................................................................................           1
Standard Hazard Insurance Policy...........................................................................          15
Stated Amount..............................................................................................           1
Stripped Certificates......................................................................................           1
Subclass...................................................................................................           1
Subordinated Amount........................................................................................           9
Subordinated Certificates..................................................................................           1
Subordinated Class Distributable Amount....................................................................          25
Subordinated Class Principal Portion.......................................................................          25
Subordinated Class Pro Rata Share..........................................................................          27
Subordination Reserve Fund.................................................................................          10
Subsidy Account............................................................................................          14
Subsidy Loans..............................................................................................          14
Treasury Regulations.......................................................................................          17
Trust Estate...............................................................................................           1
Trustee....................................................................................................          60
UCC........................................................................................................          62
Unpaid Interest Shortfall..................................................................................          28
Voting Interests...........................................................................................          58
</TABLE>
 
                                       99
<PAGE>
- -------------------------------------------
                                     -------------------------------------------
- -------------------------------------------
                                     -------------------------------------------
 
    NO  DEALER,  SALESMAN  OR  OTHER  PERSON HAS  BEEN  AUTHORIZED  TO  GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN THIS SUPPLEMENT,  THE
PROSPECTUS SUPPLEMENT OR THE PROSPECTUS, AND, IF GIVEN OR MADE, SUCH INFORMATION
OR  REPRESENTATION MUST  NOT BE  RELIED UPON  AS HAVING  BEEN AUTHORIZED  BY THE
SELLER OR BY THE UNDERWRITER. THIS SUPPLEMENT, THE PROSPECTUS SUPPLEMENT AND THE
PROSPECTUS DO NOT CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER  TO
BUY, ANY SECURITIES OTHER THAN THE SECURITIES OFFERED HEREBY NOR AN OFFER TO ANY
PERSON  IN ANY STATE OR OTHER JURISDICTION IN WHICH IT WOULD BE UNLAWFUL TO MAKE
SUCH  OFFER  OR  SOLICITATION  IN  SUCH  JURISDICTION.  THE  DELIVERY  OF   THIS
SUPPLEMENT,  THE PROSPECTUS SUPPLEMENT  AND THE PROSPECTUS AT  ANY TIME DOES NOT
IMPLY THAT INFORMATION  HEREIN IS  CORRECT AS OF  ANY TIME  SUBSEQUENT TO  THEIR
RESPECTIVE DATES.
                             ---------------------
                               TABLE OF CONTENTS
                                   SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                                           PAGE
                                                                           -----
<S>                                                                        <C>
General..................................................................   S1-3
Risk Factors and Special Considerations..................................   S1-3
Description of the Certificates..........................................   S1-6
Description of the Mortgage Loans........................................   S1-8
Origination, Delinquency and Foreclosure Experience......................  S1-15
Restrictions on Transfer of the Class A-18 Certificates..................  S1-19
Historical Prepayments...................................................  S1-19
Sensitivity of the Pre-Tax Yield and Weighted Average Life of the Class
  A-18 Certificates......................................................  S1-20
Certain Federal Income Tax Consequences..................................  S1-21
Underwriting.............................................................  S1-22
Secondary Market.........................................................  S1-22
ERISA Considerations.....................................................  S1-22
Legal Investment.........................................................  S1-23
Legal Matters............................................................  S1-23
Use of Proceeds..........................................................  S1-23
Ratings..................................................................  S1-24
Incorporation of Certain Information by Reference........................  S1-24
                             PROSPECTUS SUPPLEMENT
Table of Contents........................................................    S-3
Summary Information......................................................    S-4
Description of the Certificates..........................................   S-20
Description of the Mortgage Loans........................................   S-57
Origination, Delinquency and Foreclosure
  Experience.............................................................   S-64
Prepayment and Yield Considerations......................................   S-68
Pooling and Servicing Agreement..........................................   S-80
Federal Income Tax Considerations........................................   S-82
ERISA Considerations.....................................................   S-84
Legal Investment.........................................................   S-85
Secondary Market.........................................................   S-86
Underwriting.............................................................   S-86
Legal Matters............................................................   S-86
Use of Proceeds..........................................................   S-86
Ratings..................................................................   S-87
Index of Significant Prospectus Supplement
  Definitions............................................................   S-88
                                   PROSPECTUS
Reports..................................................................      2
Additional Information...................................................      2
Table of Contents........................................................      3
Summary of Prospectus....................................................      7
The Trust Estates........................................................     12
Description of the Certificates..........................................     21
Credit Support...........................................................     34
Prepayment and Yield Considerations......................................     39
The Seller...............................................................     41
PHMC.....................................................................     42
Use of Proceeds..........................................................     48
Servicing of the Mortgage Loans..........................................     48
The Pooling and Servicing Agreement......................................     58
Certain Legal Aspects of the Mortgage Loans..............................     61
Certain Federal Income Tax Consequences..................................     67
ERISA Considerations.....................................................     90
Legal Investment.........................................................     94
Plan of Distribution.....................................................     95
Legal Matters............................................................     97
Rating...................................................................     97
Index of Significant Definitions.........................................     98
</TABLE>
 
                              THE PRUDENTIAL HOME
                              MORTGAGE SECURITIES
                                 COMPANY, INC.
 
                                     SELLER
 
                             MORTGAGE PASS-THROUGH
                          CERTIFICATES, SERIES 1992-26
 
                              -------------------
 
                                   SUPPLEMENT
 
                              -------------------
 
                                VARIABLE RATE(1)
                            CLASS A-18 CERTIFICATES
                      (1)ON THE CLASS A-18 NOTIONAL AMOUNT
 
                            PAINEWEBBER INCORPORATED
 
                                 APRIL 19, 1996
 
- -------------------------------------------
                                     -------------------------------------------
- -------------------------------------------
                                     -------------------------------------------


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission