PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY INC
424B5, 1996-04-04
MORTGAGE BANKERS & LOAN CORRESPONDENTS
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<PAGE>
SUPPLEMENT
(TO PROSPECTUS SUPPLEMENT DATED MAY 21, 1992 AND PROSPECTUS DATED MAY 19, 1992)
 
THE PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY, INC. [LOGO]
 
                                     SELLER
 
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1992-18
         PRINCIPAL AND INTEREST PAYABLE MONTHLY, COMMENCING IN MAY 1996
 
                    VARIABLE RATE(1) CLASS A-11 CERTIFICATES
                     (1) ON THE CLASS A-11 NOTIONAL AMOUNT
                              -------------------
 
    The  Series 1992-18 Mortgage Pass-Through  Certificates (the "Series 1992-18
Certificates") are the Series 1992-18 Certificates described in the accompanying
Prospectus Supplement dated May 21,  1992 (the "Prospectus Supplement") and  the
accompanying  Prospectus  dated  May  19, 1992  (the  "Prospectus").  The Series
1992-18 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 thirteen 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-R  and
Class  A-LR  Certificates.  The  Class  M  Certificates  are  not  divided  into
subclasses. The Class B Certificates consist of three subclasses of Certificates
designated as the  Class B-1,  Class B-2 and  Class B-3  Certificates. Only  the
Class   A-11  Certificates  are   being  offered  hereby.   The  Series  1992-18
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  30 years  (the "Mortgage  Loans"), together  with certain related
property. 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-11 CERTIFICATES  SHOULD CONSIDER THE
FACTORS DISCUSSED UNDER "RISK FACTORS AND SPECIAL CONSIDERATIONS" HEREIN ON PAGE
S1-3.
 
    The credit  enhancement  for the  Series  1992-18 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-11  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-11
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-11 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-11  Certificates will be approximately
1.21% 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 10,  1996,
before  deducting expenses  payable by the  Seller estimated to  be $45,000. See
"Underwriting" herein.
 
    The Class A-11 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-11 Certificates will be made
at the office  of PaineWebber  Incorporated, 1285  Avenue of  the Americas,  New
York, New York 10019, on or about April 10, 1996.
                             ---------------------
 
                            PAINEWEBBER INCORPORATED
                                  -----------
 
                 The date of this Supplement is April 3, 1996.
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
 
    The   Class  A-11  Certificates  may  not  be  appropriate  investments  for
individual investors.  The  Class  A-11  Certificates  are  offered  in  minimum
denominations  of $450,816,000 initial  Class A-11 Notional  Amount as described
herein under "Description of the Certificates." Except as set forth below, it is
intended that the Class A-11 Certificates not be directly or indirectly held  or
beneficially   owned  by  any   person  in  amounts   lower  than  such  minimum
denomination. The  Class A-11  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-11 Certificates"
herein.
 
    There is currently no secondary market  for the Class A-11 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-11  Certificates.  The
Underwriter  intends to act  as a market  maker in the  Class A-11 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-11 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-11 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.
Interest  will accrue monthly on the Class A-11 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 8.50%, on
the  Class  A-11 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-11  Certificates  as  described  in  the Prospectus
Supplement under  "Description  of  the  Certificates--Interest."  The  Class  A
Subclass   Principal  Balance  of   the  Class  A-11   Certificates  as  of  the
Determination Date  in  April 1996  will  be  approximately $100.  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-11 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-11  Certificates and  should be read  only in conjunction  with the Prospectus
Supplement and the Prospectus. Sales of  the Class A-11 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 3,  1996, ALL DEALERS  EFFECTING TRANSACTIONS IN  THE CLASS  A-11
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 1992-18 Certificates were issued on June 29, 1992. The Class A-11
Certificates  were not offered to the public at  the time of the issuance of the
Series 1992-18 Certificates.
 
                    RISK FACTORS AND SPECIAL CONSIDERATIONS
 
YIELD CONSIDERATIONS
 
    The yield  to maturity  of  the Class  A-11  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-11 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 (54.92%), New  York (14.81%), New Jersey (9.66%)  and
Florida  (5.61%). 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-11 Certificates. See
"Description of the Mortgage Loans" herein.
 
    AN INVESTOR THAT PURCHASES CLASS A-11 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-11
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  1992-18 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-11  Certificates   will  be  offered   in  fully  registered,
certificated form in  minimum denominations of  $450,816,000 initial Class  A-11
Notional  Amount; provided,  however, that  the Class  A-11 Certificates  may be
issued in  minimum  denominations of  $11,864,000  initial Class  A-11  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-11 Certificates, such
that such  investor  is  capable  of  evaluating the  merits  and  risks  of  an
investment  in the Class A-11 Certificates, and (ii) has a net worth of at least
$10,000,000; or (b) will hold the Class A-11 Certificates solely as nominee  for
a  person  meeting  the  criteria  set  forth  in  clause  (a).  The  Class A-11
Certificates may  be  issued  in any  amounts  in  excess of  any  such  minimum
denominations.  The  Class  A  Subclass  Principal  Balance  of  the  Class A-11
Certificates as of the  Determination Date in April  1996 will be  approximately
$100.  The Class A Subclass Principal Balance  of the Class A-11 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-11 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-11  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-11
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-11 Certificates will be entitled to a distribution in respect of
interest each month in an amount up to such Subclass' Class A Subclass  Interest
Accrual  Amount. The Class A Subclass Interest Accrual Amount for the Class A-11
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) 8.50% and (ii) the Class A-11 Notional Amount.
 
    The Class A Subclass Interest Accrual Amount for the Class A-11 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 0.25% per annum. See "Pooling and Servicing
Agreement--Servicing  Compensation and  Payment of  Expenses" in  the Prospectus
Supplement.
 
    The "Class A-11 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-11 Notional Amount  with
respect  to the Distribution  Date in March  1996 was approximately $81,354,187.
The Class A-11 Notional Amount with respect to the Distribution Date in May 1996
will be equal to the Class A-11 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-11
Notional Amount was approximately $450,815,692.
 
    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, if any) and  interest on or in respect of the
Mortgage Loans  received by  the Servicer  after the  Cut-Off Date  (except  for
 
                                      S1-6
<PAGE>
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  and (ii) 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;
 
        (b) any unreimbursed Periodic Advances 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 1992-18 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 1992-18 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-11 Certificates
are outstanding, without the consent of  holders of 66 2/3% Percentage  Interest
of the Class A-11 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-11 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 30 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 407  promissory notes, having  an aggregate  Unpaid
Principal  Balance (the  "Aggregate Unpaid Principal  Balance") of approximately
$79,516,277, secured by  first liens  (the "Mortgages") on  one- to  four-family
residential  properties (the  "Mortgaged Properties"). As  of March  15, 1996 no
such Mortgage Loans have prepaid in full. Prepayments in full occurring in March
1996 will reduce the Class A-11 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. No Mortgage Loan was originated pursuant to PHMC's Relocation
Mortgage   Program.  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 $2,780 or more than  $1,452,782, and the average Unpaid Principal
Balance of  the Mortgage  Loans was  approximately $195,372.  The latest  stated
maturity  date of  any of  the Mortgage  Loans was  March 1,  2023; 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, 371  of  the Mortgaged  Properties,  which secure
approximately 92.20% of the Aggregate  Unpaid Principal Balance of the  Mortgage
Loans,  were owner occupied primary residences,  32 of the Mortgaged Properties,
which secure approximately 7.45%  of the Aggregate  Unpaid Principal Balance  of
the  Mortgage Loans,  were non-owner  occupied or second  homes and  four of the
Mortgaged Properties, which secure approximately  0.35% of the Aggregate  Unpaid
Principal   Balance  of  the  Mortgage  Loans,  were  investor  properties.  See
"PHMC--Mortgage Loan Underwriting" in the Prospectus.
 
    As  of  March  15,   1996,  three  of   the  Mortgage  Loans,   representing
approximately  1.58% 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>
8.750%..................................      27      $  6,392,873.57        8.04   %
8.875%..................................      40         7,310,800.42        9.19
9.000%..................................      36         8,480,801.40       10.67
9.125%..................................      50        10,250,114.02       12.89
9.250%..................................      75        14,889,401.95       18.72
9.375%..................................      67        12,536,181.41       15.77
9.500%..................................      51         9,605,163.52       12.08
9.625%..................................      25         4,464,846.48        5.62
9.750%..................................      23         3,753,177.24        4.72
9.875%..................................       7         1,307,592.48        1.64
10.000%.................................       5           450,593.51        0.57
10.875%.................................       1            74,731.05        0.09
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      100.00   %
                                             ---      ---------------     -------
                                             ---      ---------------     -------
</TABLE>
 
As of  March  15, 1996,  the  weighted average  Mortgage  Interest Rate  of  the
Mortgage  Loans was  approximately 9.243% 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  0.25% per annum. As of March 15,
1996, the weighted average Net Mortgage Interest Rate of the Mortgage Loans  was
approximately 8.993% 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>
270.....................................       1      $    233,100.87     0.29   %
282.....................................       1            74,731.05     0.09
304.....................................       1           184,954.62     0.23
307.....................................       2           259,173.07     0.33
308.....................................       6           855,633.81     1.08
309.....................................       1           222,436.75     0.28
310.....................................      20         4,540,985.99     5.71
311.....................................      18         4,486,064.37     5.64
312.....................................      35         7,377,724.68     9.28
313.....................................     156        34,678,728.24    43.62
314.....................................     157        25,170,549.48    31.65
315.....................................       8         1,301,134.33     1.64
324.....................................       1           131,059.79     0.16
                                             ---      ---------------  -------
        Total...........................     407      $ 79,516,277.05   100.00   %
                                             ---      ---------------  -------
                                             ---      ---------------  -------
</TABLE>
 
As  of March 15, 1996, the weighted average remaining term to stated maturity of
the Mortgage Loans was approximately 313 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>
1988....................................       1      $    233,100.87     0.29   %
1989....................................       1            74,731.05     0.09
1991....................................      32         6,389,144.20     8.04
1992....................................     373        72,819,300.93    91.58
                                             ---      ---------------  -------
        Total...........................     407      $ 79,516,277.05   100.00   %
                                             ---      ---------------  -------
                                             ---      ---------------  -------
</TABLE>
 
As of March 15, 1996 the earliest month and year of origination of any  Mortgage
Loan  was  August 1988  and  the latest  month and  year  of origination  of any
Mortgage Loan was May 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...........................      25      $  4,137,800.27        5.20   %
50.1-55.0%..............................       7           922,636.87        1.16
55.1-60.0%..............................      16         2,911,598.58        3.66
60.1-65.0%..............................      19         3,958,480.26        4.98
65.1-70.0%..............................      49        10,402,703.11       13.08
70.1-75.0%..............................     141        25,782,907.16       32.43
75.1-80.0%..............................     122        24,197,900.01       30.43
80.1-85.0%..............................       8         2,394,965.26        3.01
85.1-90.0%..............................      20         4,807,285.53        6.05
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      100.00   %
                                             ---      ---------------     -------
                                             ---      ---------------     -------
</TABLE>
 
As of March 15, 1996 the minimum and maximum Loan-to-Value Ratios at origination
of the  Mortgage Loans  were 24.5%  and 90.0%,  respectively, and  the  weighted
average   Loan-to-Value  Ratio  at   origination  of  the   Mortgage  Loans  was
approximately 73.1%. 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, seven of  the
Mortgage  Loans having  Loan-to-Value Ratios  at origination  in excess  of 80%,
representing approximately 2.74%  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......................     126      $ 35,940,207.81       45.20   %
Asset & Income Verification.............       5           786,491.78        0.99
Asset & Mortgage Verification...........     121        21,683,472.04       27.27
Income & Mortgage Verification..........       1            47,293.62        0.06
Asset Verification......................      65         8,698,856.94       10.94
Income Verification.....................       0                 0.00        0.00
Mortgage Verification...................      35         6,283,107.33        7.90
Preferred Processing....................      54         6,076,847.53        7.64
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      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..........     217      $ 21,613,647.15       27.18   %
$200,001-$250,000.......................      64        14,016,402.53       17.63
$250,001-$300,000.......................      52        13,839,676.72       17.40
$300,001-$350,000.......................      29         9,113,291.23       11.46
$350,001-$400,000.......................      17         6,116,465.32        7.69
$400,001-$450,000.......................      11         4,524,133.28        5.69
$450,001-$500,000.......................       6         2,734,728.72        3.44
$500,001-$550,000.......................       2         1,023,912.56        1.29
$550,001-$600,000.......................       4         2,182,748.74        2.75
$600,001-$650,000.......................       2         1,209,015.96        1.52
$750,001-$800,000.......................       1           718,704.00        0.90
$950,001-$1,000,000.....................       1           970,769.78        1.22
Greater than $1,000,000.................       1         1,452,781.06        1.83
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      100.00   %
                                             ---      ---------------     -------
                                             ---      ---------------     -------
</TABLE>
 
As of March 15, 1996, the average Unpaid Principal Balance of the Mortgage Loans
was  approximately  $195,372.  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 62.3% and  73.4%, 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..................     363      $ 73,188,270.92       92.05   %
Two- to four-family units...............       0                 0.00        0.00
Condominiums............................      40         5,823,074.65        7.32
Townhouses..............................       2           256,438.32        0.32
Planned Unit Developments...............       2           248,493.16        0.31
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      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>
Alabama.................................       1      $     51,768.24        0.07   %
Arizona.................................       5           459,770.79        0.58
California..............................     152        43,663,532.52       54.92
Connecticut.............................       7         1,460,369.93        1.84
Delaware................................       1            59,121.67        0.07
District of Columbia....................       1           268,527.88        0.34
Florida.................................      35         4,463,127.24        5.61
Georgia.................................       5           603,003.43        0.76
Illinois................................       5           526,097.26        0.66
Louisiana...............................       1            70,043.69        0.09
Maine...................................       1            87,029.20        0.11
Maryland................................       6         1,526,622.17        1.92
Massachusetts...........................       5           691,704.39        0.87
Michigan................................       1            50,632.68        0.06
Minnesota...............................       1             2,780.67        0.00
Montana.................................       1           144,442.30        0.18
Nevada..................................       2           134,940.69        0.17
New Jersey..............................      58         7,681,318.63        9.66
New Mexico..............................       6           809,586.61        1.02
New York................................      75        11,776,000.62       14.81
Ohio....................................       1            33,901.79        0.04
Pennsylvania............................      14         1,567,857.11        1.97
Rhode Island............................       3           502,768.85        0.63
South Carolina..........................       1            52,309.12        0.07
Tennessee...............................       1            54,964.61        0.07
Texas...................................      11         1,650,059.78        2.08
Vermont.................................       2           233,518.79        0.29
Virginia................................       2           368,271.56        0.46
Washington..............................       2           479,281.08        0.60
Wisconsin...............................       1            42,923.75        0.05
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      100.00   %
                                             ---      ---------------     -------
                                             ---      ---------------     -------
</TABLE>
 
As  of March 15, 1996, no more  than approximately 2.50% 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.......................     122      $ 20,875,873.47       26.25   %
Other Originators.......................     285        58,640,403.58       73.75
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      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................................     167      $ 24,006,627.09       30.19   %
Rate/term refinance.....................     142        34,840,794.55       43.82
Equity take out.........................      98        20,668,855.41       25.99
                                             ---      ---------------     -------
        Total...........................     407      $ 79,516,277.05      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.......................         6    $    1,158,190.17         1.46      %
60 to 89 days.......................         3           946,024.63         1.19
90 days or more.....................         2           399,305.14         0.50
Loans in Foreclosure................         6         1,742,893.11         2.19
REO Mortgage Loans..................         2           640,410.33         0.81
                                            --
                                                  -----------------          ---
        Total.......................        19    $    4,886,823.38         6.15      %
                                            --
                                            --
                                                  -----------------          ---
                                                  -----------------          ---
</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 23.65%  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 53.52% 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 49.01% 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,  0.76% 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 5.60% 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 0.60%  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, 15  of
the  delinquent  Mortgage  Loans  shown  in  the  preceding  table, representing
approximately 5.13% of the  Aggregate Unpaid Principal  Balance of the  Mortgage
Loans  or approximately $4,082,660, 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 three  months ended March  31, 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 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 Non-relocation
 Program Loans..........................   247,792   $ 42,030,123    262,159   $ 41,589,441    303,943   $ 45,251,942
                                          --------   ------------   --------   ------------   --------   ------------
                                          --------   ------------   --------   ------------   --------   ------------
Period of Delinquency(1)
  30 to 59 days.........................     2,326   $    344,861      2,424   $    350,629      3,658   $    470,877
  60 to 89 days.........................       530         81,444        539         80,843        679         89,665
  90 days or more.......................     1,054        203,444        903        179,493        498         76,452
                                          --------   ------------   --------   ------------   --------   ------------
Total Delinquent Loans..................     3,910   $    629,749      3,866   $    610,965      4,835   $    636,994
                                          --------   ------------   --------   ------------   --------   ------------
                                          --------   ------------   --------   ------------   --------   ------------
Percent of Fixed Non-relocation Program
 Loan Portfolio.........................      1.58%          1.50%      1.47%          1.47%      1.59%          1.41%
</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).........................  $  190,293        $   199,379        $  208,865
Foreclosure Ratio(3)....................        0.45%              0.48%             0.46%
 
<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)......................  $  (61,387)       $  (131,788)       $ (161,810)
Net Gain (Loss) Ratio(5)................       (0.15)%            (0.32)%           (0.36)%
</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-11 CERTIFICATES
 
    Class A-11 Certificates with denominations of less than $450,816,000 initial
Class A-11 Notional  Amount but  not less  than $11,864,000  initial Class  A-11
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-11 Certificates, such  that such investor is  capable of evaluating  the
merits and risks of an investment in the Class A-11 Certificates, and (ii) has a
net  worth of at least $10,000,000; or (b) will hold the Class A-11 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 1992-18  Certificates were  issued on  June 29,  1992. Set  forth
below  are the  approximate annualized  prepayment rates  of the  Mortgage Loans
underlying the Series  1992-18 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>
July 1992.....................................................        0.79%
August 1992...................................................        2.88%
September 1992................................................        8.25%
October 1992..................................................       18.29%
November 1992.................................................       32.29%
December 1992.................................................       14.64%
January 1993..................................................       18.38%
February 1993.................................................       19.40%
March 1993....................................................       22.25%
April 1993....................................................       33.71%
May 1993......................................................       62.67%
June 1993.....................................................       69.22%
July 1993.....................................................       60.23%
August 1993...................................................       60.94%
September 1993................................................       63.29%
October 1993..................................................       73.21%
November 1993.................................................       73.28%
December 1993.................................................       85.49%
January 1994..................................................       83.25%
February 1994.................................................       55.96%
March 1994....................................................       60.81%
April 1994....................................................       61.72%
May 1994......................................................       28.71%
 
<CAPTION>
MONTH                                                           PERCENTAGE OF CPR
- --------------------------------------------------------------  -----------------
<S>                                                             <C>
June 1994.....................................................       46.88%
July 1994.....................................................       20.68%
August 1994...................................................       25.40%
September 1994................................................       12.67%
October 1994..................................................       22.14%
November 1994.................................................        3.28%
December 1994.................................................       11.88%
January 1995..................................................       13.97%
February 1995.................................................        6.75%
March 1995....................................................       12.87%
April 1995....................................................        0.20%
May 1995......................................................        4.97%
June 1995.....................................................        7.39%
July 1995.....................................................       15.11%
August 1995...................................................       29.65%
September 1995................................................       31.49%
October 1995..................................................       23.43%
November 1995.................................................       17.10%
December 1995.................................................       13.56%
January 1996..................................................        6.50%
February 1996.................................................        6.57%
March 1996....................................................       23.31%
</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  1992-18 Certificates with  respect to  July
1992,  reduced by one month for each month thereafter. The prepayment history of
the Mortgage  Loans underlying  the Series  1992-18 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-11
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-11 CERTIFICATE.
 
                                     S1-19
<PAGE>
                 SENSITIVITY OF THE PRE-TAX YIELD AND WEIGHTED
                  AVERAGE LIFE OF THE CLASS A-11 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-11  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-11 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-11 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-11 Certificate is the average amount of time that will elapse from April
10,  1996 until each dollar in reduction  of the principal balance of the Series
1992-18 Certificates is distributed to the holders thereof. The weighted average
life of the Class A-11 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 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-11 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 last paragraph beginning on  page
S-49  of the Prospectus Supplement, and on  the further assumptions that (i) the
Class A-11 Certificates  will be purchased  on April 10,  1996 for an  aggregate
purchase  price equal to approximately $989,427, which includes accrued interest
from April 1, 1996 to (but not including) April 10, 1996, (ii) distributions  to
holders  of Class A-11 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-11  Notional  Amount
applicable  to the Distribution Date occurring in May 1996 will be approximately
$79,455,055 and (vi) the  Class A Subclass Principal  Balance of the Class  A-11
Certificates  as  of  the  Determination  Date occurring  in  May  1996  will be
approximately $100.
 
           SENSITIVITY OF THE PRE-TAX YIELD AND WEIGHTED AVERAGE LIFE
                 OF THE CLASS A-11 CERTIFICATES TO PREPAYMENTS
 
<TABLE>
<CAPTION>
                                                   PERCENTAGES OF CPR
                                        ----------------------------------------
                                         5%     10%    15%    20%    25%    33%
                                        -----  -----  -----  -----  -----  -----
<S>                                     <C>    <C>    <C>    <C>    <C>    <C>
Pre-Tax Yield to Maturity (CBE).......  35.04% 29.06% 22.91% 16.57% 10.03% (0.94)%
Weighted Average Life (years).........  11.23   7.64   5.56   4.26   3.40   2.51
</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-11  Certificates, would  cause the
discounted present  value of  such assumed  stream  of cash  flows to  equal  an
assumed purchase price for the Class A-11 Certificates of approximately $989,427
which   includes   accrued   interest   from  April   1,   1996   to   (but  not
 
                                     S1-20
<PAGE>
including) April 10, 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-11 Certificates and consequently does
not purport  to  reflect  the  return  on  any  investment  in  the  Class  A-11
Certificates when such reinvestment rates are considered.
 
    The  weighted average lives of the Class  A-11 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 1992-18
Certificates by  the  number  of  years  from April  10,  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
1992-18 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-11  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  and  Class A-11  Certificates, the  Class  M
Certificates  and  the  Class B-1,  Class  B-2  and Class  B-3  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-11 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-11  Certificates  generally are  treated  as  debt instruments
originated on the date of original  issuance of the Series 1992-18  Certificates
for  federal income tax purposes. Holders of the Class A-11 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 1992-18
Certificates,  the Seller  believes that the  Class A-11  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-11 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-11
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-11
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 1992-18 Certificates, less distributions made, and losses, if any,
incurred, on the Class A-11 Certificates since the date of original issuance  of
the  Series 1992-18 Certificates. A purchase  price for a Class A-11 Certificate
that is less than or  greater than the adjusted issue  price of such Class  A-11
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-11  Certificates offered
hereby are being purchased from the Seller by the Underwriter on or about  April
10,  1996.  The Underwriter  is  committed to  purchase  all of  the  Class A-11
Certificates offered hereby if  any Class A-11  Certificates are purchased.  The
Underwriter  has advised  the Seller  that it proposes  to offer  the Class A-11
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-11  Certificates are expected to be approximately  1.21%
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 10,  1996.
The  Underwriter and  any dealers that  participate with the  Underwriter in the
distribution of the Class  A-11 Certificates may be  deemed to be  underwriters,
and  any discounts or commissions received by  them and any profit on the resale
of Class A-11 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-11  Certificates
offered  hereby prior to the offering thereof. The Underwriter intends to act as
a market maker in the Class A-11 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-11 Certificates will develop  or, if such a market does develop,
that it  will provide  holders  of Class  A-11  Certificates with  liquidity  of
investment   at  any  particular  time  or  for  the  life  of  the  Class  A-11
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-11 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-11  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-11  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-11 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-11 Certificates, is the
condition that the  ERISA Plan investing  in the Class  A-11 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-11 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-11 Certificates. Any fiduciary
of an ERISA Plan considering whether to purchase a Class A-11 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-11  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-11 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-11 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-11
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-11 Certificates  constitute
legal investments for such investors. See "Legal Investment" in the Prospectus.
 
                                 LEGAL MATTERS
 
    The  validity of  the Class A-11  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-11 Certificates
will be applied by  the Seller to  the purchase from an  affiliate of the  Class
A-11 Certificates.
 
                                     S1-23
<PAGE>
                                    RATINGS
 
    The  Class A-11 Certificates  have been rated  "AAA" by Fitch  and "AAAr" by
S&P. See "Ratings" in the Prospectus Supplement for a further discussion of  the
ratings  of  the  Certificates. S&P  assigns  the  additional rating  of  "r" to
highlight classes of securities that S&P believes may experience high volatility
or high variability in expected returns due to non-credit risks.
 
    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 and  consequently any  adverse effect the  timing of  such
prepayments could have on an investor's anticipated yield.
 
    S&P's  ratings on mortgage pass-through  certificates address the likelihood
of receipt by  certificateholders of  timely payments of  interest and  ultimate
return of principal. S&P's ratings take into consideration the credit quality of
the  mortgage pool including any credit  support providers, structural and legal
aspects associated with the  certificates, and the extent  to which the  payment
stream  of the  mortgage pool  is adequate  to make  payment required  under the
certificates. S&P's ratings on  the certificates do  not, however, constitute  a
statement  regarding the frequency  of prepayments on  the mortgage loans. S&P's
rating does not address the possibility  that investors may suffer a lower  than
anticipated  yield as  a result of  prepayments of the  underlying mortgages. In
addition, it should be noted that in some structures a default on a mortgage  is
treated as a prepayment and may have the same effect on yield as a prepayment.
 
    The  ratings of  Fitch and  S&P 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-11  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-11 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-11 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-11 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>
- -------------------------------------------
                                     -------------------------------------------
- -------------------------------------------
                                     -------------------------------------------
 
    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-11 Certificates..................  S1-19
Historical Prepayments...................................................  S1-19
Sensitivity of the Pre-Tax Yield and Weighted Average Life of the Class
  A-11 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-18
Description of the Mortgage Loans........................................   S-36
Origination, Delinquency and Foreclosure Experience......................   S-43
Prepayment and Yield Considerations......................................   S-47
Pooling and Servicing Agreement..........................................   S-55
Federal Income Tax Considerations........................................   S-56
ERISA Considerations.....................................................   S-59
Legal Investment.........................................................   S-60
Secondary Market.........................................................   S-60
Underwriting.............................................................   S-60
Legal Matters............................................................   S-61
Use of Proceeds..........................................................   S-61
Ratings..................................................................   S-61
Index of Significant Prospectus Supplement
  Definitions............................................................   S-62
                                   PROSPECTUS
Reports..................................................................      2
Additional Information...................................................      2
Additional Detailed 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 1992-18
 
                              -------------------
 
                                   SUPPLEMENT
 
                              -------------------
 
                                 VARIABLE RATE1
                            CLASS A-11 CERTIFICATES
                       1ON THE CLASS A-11 NOTIONAL AMOUNT
 
                            PAINEWEBBER INCORPORATED
 
                                 APRIL 3, 1996
 
- -------------------------------------------
                                     -------------------------------------------
- -------------------------------------------
                                     -------------------------------------------
<PAGE>
             PROSPECTUS SUPPLEMENT TO PROSPECTUS DATED MAY 19, 1992
 
                                  $427,281,000
                                 (APPROXIMATE)
 
          THE PRUDENTIAL HOME MORTGAGE SECURITIES COMPANY, INC. [LOGO]
 
                                     SELLER
 
               MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 1992-18
        PRINCIPAL AND INTEREST PAYABLE MONTHLY, COMMENCING IN JULY 1992
                            ------------------------
 
    The  Series 1992-18 Mortgage Pass-Through  Certificates (the "Series 1992-18
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  rights  of  the  holders  of  the  Class  M
Certificates to receive distributions with respect to the Mortgage Loans will be
subordinated to the 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 will be subordinated to the rights of the  holders
of  both the Class A and Class M Certificates to the extent described herein and
in the Prospectus. The Class A Certificates will consist of thirteen  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-R and  Class A-LR  Certificates. The  Class M
Certificates will not be divided into subclasses. The Class B Certificates  will
consist  of three subclasses of Certificates  designated as the Class B-1, Class
B-2 and Class B-3 Certificates. The  Class A Certificates (other than the  Class
A-11  Certificates)  and  the  Class  M  Certificates  are  referred  to  herein
collectively as the "Offered Certificates"  and are the only Certificates  being
offered hereby.
 
                                                        (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 GOV                         ERNMENTAL 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 REPRE         SENTATION TO THE CONTRARY IS  A
                               CRIMINAL OFFENSE.

<TABLE>
<CAPTION>
<S>                                                                                               <C>
                                                                                                  INITIAL SUBCLASS OR
                                                                                                    CLASS PRINCIPAL
SUBCLASS OR CLASS DESIGNATION                                                                         BALANCE (1)
<S>                                                                                               <C>
Class A-1.......................................................................................     $  48,000,000
Class A-2.......................................................................................     $  55,000,000
Class A-3.......................................................................................     $  15,000,000
Class A-4.......................................................................................     $  56,000,000
Class A-5.......................................................................................     $  43,000,000
Class A-6.......................................................................................     $  53,000,000
Class A-7.......................................................................................     $  61,000,000
Class A-8.......................................................................................     $  69,000,000
Class A-9.......................................................................................     $  11,486,000
Class A-10......................................................................................     $      10,000
Class A-R.......................................................................................  $           1,000
Class A-LR......................................................................................  $           1,000
Class M.........................................................................................  $      15,783,000
 
<CAPTION>
                                                                                                   PASS- THROUGH
SUBCLASS OR CLASS DESIGNATION                                                                           RATE
<S>                                                                                               <C>
Class A-1.......................................................................................        8.00%
Class A-2.......................................................................................        8.00%
Class A-3.......................................................................................        8.00%
Class A-4.......................................................................................        8.00%
Class A-5.......................................................................................        8.00%
Class A-6.......................................................................................        8.00%
Class A-7.......................................................................................        8.00%
Class A-8.......................................................................................        8.00%
Class A-9.......................................................................................        8.00%
Class A-10......................................................................................        (2)
Class A-R.......................................................................................         8.50     %
Class A-LR......................................................................................         8.50     %(3)
Class M.........................................................................................         8.50     %
</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  0.50% and the sum of  the
    Class  A Subclass Principal Balances of 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  and  Class  A-9
    Certificates  and  (ii) the  product  of 1/12th  of  8.50% and  the  Class A
    Subclass Principal Balance of  the Class A-10  Certificates. It is  expected
    that,  based on the approximate initial  Class A Subclass Principal Balances
    set forth  above, the  formula  set forth  in  the preceding  sentence  will
    produce  an interest rate on  the Class A Subclass  Principal Balance of the
    Class A-10 Certificates of 20582.80% per annum.
 
(3) On the Class A-LR Notional Amount.
 
    The Offered Certificates  will be  purchased by  Goldman, Sachs  & Co.  (the
"Underwriters")  from the  Seller and will  be offered by  the Underwriters 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 101.515625%  of the initial  aggregate
principal balance of the Offered Certificates, plus accrued interest thereon and
on  an amount equal to the initial aggregate principal balance of the Class A-11
Certificates at  the rate  of 8.50%  per annum  from June  1, 1992  to (but  not
including)  June  29,  1992, before  deducting  expenses payable  by  the Seller
estimated to  be $415,000.  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  Underwriters,  as specified
herein, subject to receipt and acceptance by them and subject to their right  to
reject  any  order  in  whole  or  in part.  It  is  expected  that  the Offered
Certificates will be ready for  delivery on or about  June 29, 1992 through  the
facilities  of The Depository Trust  Company, or in the  case of the Class A-10,
Class A-R, Class A-LR and Class M Certificates, at the offices of Goldman, Sachs
& Co., New York, New York.
 
                              GOLDMAN, SACHS & CO.
                                 -------------
 
            THE DATE OF THIS PROSPECTUS SUPPLEMENT IS MAY 21, 1992.
<PAGE>
(Continued from previous page)
 
    The Series 1992-18 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 30 years (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").  The  Class A
Certificates will  initially evidence  in the  aggregate an  approximate  91.25%
undivided  interest in the principal balance of  the Mortgage Loans. The Class M
Certificates will  initially  evidence in  the  aggregate an  approximate  3.50%
undivided interest in the principal balance of the Mortgage Loans. The remaining
approximate  5.25% 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  July 1992,  to the
holders of Offered Certificates  to the extent 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 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,  ESPECIALLY THE CLASS A-10  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 CERTIFICATES SHOULD 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. SEE "DESCRIPTION OF THE CERTIFICATES-- INTEREST"  AND
"--PRINCIPAL   (INCLUDING  PREPAYMENTS)"   HEREIN  AND   "PREPAYMENT  AND  YIELD
CONSIDERATIONS" HEREIN AND IN THE PROSPECTUS.
 
    THE YIELD TO MATURITY OF 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  CLASS B PRINCIPAL BALANCE  HAS
BEEN REDUCED TO ZERO. SEE "DESCRIPTION OF THE CERTIFICATES--PRINCIPAL (INCLUDING
PREPAYMENTS)" AND "--SUBORDINATION OF CLASS M AND CLASS B CERTIFICATES" HEREIN.
 
    The  Offered Certificates (other than the  Class A-10, 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
Underwriters  intend  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  are 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 and 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  interest"  in   the
Upper-Tier  REMIC and Lower-Tier REMIC,  respectively. PROSPECTIVE INVESTORS ARE
CAUTIONED THAT THE CLASS  A-R AND CLASS  A-LR CERTIFICATEHOLDERS' REMIC  TAXABLE
INCOME  AND THE  TAX LIABILITY  THEREON WILL  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-11 Certificates) represent
twelve 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 SEPTEMBER 9, 1992  ALL DEALERS EFFECTING  TRANSACTIONS IN THE  OFFERED
CERTIFICATES, WHETHER OR NOT PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED
TO  DELIVER A PROSPECTUS SUPPLEMENT  AND PROSPECTUS. THIS IS  IN ADDITION TO THE
OBLIGATION OF DEALERS  TO DELIVER  A PROSPECTUS SUPPLEMENT  AND 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-18
  General...................................................................................................  S-18
  Book-Entry Registration...................................................................................  S-18
  Definitive Certificates...................................................................................  S-19
  Distributions.............................................................................................  S-19
  Interest..................................................................................................  S-21
  Principal (Including Prepayments).........................................................................  S-25
    CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A CERTIFICATES.....................................  S-25
    CALCULATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS M CERTIFICATES.....................................  S-27
    ALLOCATION OF AMOUNT TO BE DISTRIBUTED TO THE CLASS A AND CLASS M CERTIFICATES..........................  S-28
  Additional Rights of the Class A-R and Class A-LR Certificateholders......................................  S-29
  Periodic Advances.........................................................................................  S-30
  Restrictions on Transfer of the Class A-R, Class A-LR and Class M Certificates............................  S-30
  Reports...................................................................................................  S-31
  Subordination of Class M and Class B Certificates.........................................................  S-32
    ALLOCATION OF LOSSES....................................................................................  S-32
Description of the Mortgage Loans...........................................................................  S-36
  Mandatory Repurchase or Substitution of Mortgage Loans....................................................  S-42
  Optional Repurchase of Defaulted Mortgage Loans...........................................................  S-42
Origination, Delinquency and Foreclosure Experience.........................................................  S-43
  Loan Origination..........................................................................................  S-43
  Delinquency and Foreclosure Experience....................................................................  S-43
Prepayment and Yield Considerations.........................................................................  S-47
  Sensitivity of the Class A-10 Certificates................................................................  S-54
Pooling and Servicing Agreement.............................................................................  S-55
  General...................................................................................................  S-55
  Voting....................................................................................................  S-55
  Trustee...................................................................................................  S-56
  Servicing Compensation and Payment of Expenses............................................................  S-56
  Optional Termination......................................................................................  S-56
Federal Income Tax Considerations...........................................................................  S-56
  Regular Certificates......................................................................................  S-57
  Residual Certificates.....................................................................................  S-57
ERISA Considerations........................................................................................  S-58
Legal Investment............................................................................................  S-60
Secondary Market............................................................................................  S-60
Underwriting................................................................................................  S-60
Legal Matters...............................................................................................  S-61
Use of Proceeds.............................................................................................  S-61
Ratings.....................................................................................................  S-61
Index of Significant Prospectus Supplement Definitions......................................................  S-62
</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.
 
<TABLE>
<S>                                 <C>
Title of Securities...............  Mortgage  Pass-Through Certificates, Series 1992-18 (the
                                    "Series 1992-18 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
                                    Standard   &  Poor's   Corporation  ("S&P")   and  Fitch
                                    Investors Service, Inc. ("Fitch"). It is a condition  to
                                    the issuance of the Class M Certificates that they shall
                                    have  been rated "AA"  by S&P and  Fitch. The ratings by
                                    S&P 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 1992-18 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 1992-18 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    91.25%   (approximately
                                    $411,499,000)  undivided   interest   in   the   initial
                                    aggregate  principal balance of  the Mortgage Loans; the
                                    Class M Certificates will  evidence in the aggregate  an
                                    approximate  3.50% (approximately $15,783,000) undivided
                                    interest in the initial  aggregate principal balance  of
                                    the  Mortgage Loans;  and the Class  B Certificates will
                                    evidence  in   the   aggregate  an   approximate   5.25%
                                    (approximately $23,676,301) undivided
</TABLE>
 
                                      S-4
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    interest  in the initial  aggregate principal balance of
                                    the  Mortgage  Loans.  The  relative  interests  in  the
                                    aggregate  outstanding 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 and the
                                    allocation of  certain  losses  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  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  thirteen
                                    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-R
                                    and Class A-LR  Certificates. The  Class M  Certificates
                                    will  not  be  divided  into  subclasses.  The  Class  B
                                    Certificates will  consist of  three subclasses,  desig-
                                    nated  as  the  Class  B-1,  Class  B-2  and  Class  B-3
                                    Certificates.
                                    The Class  A Certificates  (other  than the  Class  A-11
                                    Certificates)  and  the Class  M Certificates  are being
                                    offered for sale by  this Prospectus Supplement and  the
                                    Prospectus  and  are  referred  to  in  this  Prospectus
                                    Supplement as the "Offered Certificates." References  to
                                    the  "Subordinated Certificates" are to  the Class M and
                                    Class B Certificates.  The Class  A-11 Certificates  and
                                    one  or more of  the subclasses of  Class B Certificates
                                    may be retained or sold by the Seller.
                                    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
                                    1992-18   Certificates   and  the   approximate  initial
                                    aggregate principal balance of the  Class A and Class  M
                                    Certificates  as of the date  of this Prospectus Supple-
                                    ment will not, with respect to the Class A  Certificates
                                    (other  than the Class A-11  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   1992-18  Certificates.   Any
                                    difference allocated to the Class A Certificates will be
                                    allocated  among the subclasses  of Class A Certificates
                                    other than the  Class A-10,  Class A-11,  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-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   Supplement   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,
</TABLE>
 
                                      S-5
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    except under extraordinary circumstances, which are dis-
                                    cussed  in "Description  of the Certificates--Definitive
                                    Certificates" 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 securities.  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.
                                    CERTIFICATED  FORM.   The Class  A-10, 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  $600  initial principal  balance.  Any
                                    amounts  in excess of $600 will be in integral multiples
                                    of  $1   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 1992-18
                                    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  30
                                    years.  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.
</TABLE>
 
                                      S-6
<PAGE>
 
<TABLE>
<S>                                 <C>
SELECTED MORTGAGE LOAN DATA
(AS OF THE CUT-OFF DATE)
 
Cut-Off Date:                         June 1, 1992
Number of Mortgage Loans:             1,703
Aggregate Unpaid Principal
  Balance 1:                          $450,958,301
 
Range of Unpaid Principal             $28,885 to $1,496,051
  Balances 1:
Average Unpaid Principal Balance 1:   $264,802
 
Range of Interest Rates:              8.750% to 10.875%
Weighted Average Interest Rate 1:     9.248%
 
Range  of Remaining  Terms to Stated
  Maturity:                           281 months to 360 months
Weighted Average  Remaining Term  to
  Stated Maturity 1:                  358 months
 
Range   of   Original  Loan-to-Value
  Ratios:                             22.64% to 90.00%
Weighted Average  Original  Loan-to-
  Value Ratio 1:                      71%
 
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 1992-18  Certificates (which  is expected  to
                                    occur  on or  about June 29,  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   1992-18
                                    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 1992-18
                                    Certificates. See "Pooling and Servicing
                                    Agreement--Optional  Termination"  in  this   Prospectus
                                    Supplement.
</TABLE>
 
                                      S-7
<PAGE>
 
<TABLE>
<S>                                 <C>
Distributions of Principal and
  Interest........................  DISTRIBUTIONS  IN GENERAL.  Distributions on  the Series
                                    1992-18 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 a "Distribution Date"),
                                    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 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 Prepay-
                                    ments)--Allocation  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
                                    balance 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
</TABLE>
 
                                      S-8
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    related  Distribution  Date. The  pass-through  rate for
                                    each such subclass or class is the percentage set  forth
                                    on the cover of this Prospectus Supplement.
                                    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
                                    0.50%  and the sum of the outstanding principal balances
                                    of 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 and  Class  A-9
                                    Certificates and (ii) the product of 1/12th of 8.50% 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.
                                    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  8.50% and  (ii) the  notional
                                    amount of the Class A-LR Certificate.
                                    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  paid 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 1992-18 Certificates. Any  such
                                    shortfalls  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   1992-18
                                    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.
</TABLE>
 
                                      S-9
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    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 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 (net of any shortfalls and losses allocable  to
                                    the Class M Certificates described above) on the Class M
                                    Certificates, 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.
                                    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. In general, the percentage of
                                    the principal 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
                                    Prepayments)--Calculation of Amount to be Distributed to
                                    the  Class  A Certificates"  in this  Prospectus Supple-
                                    ment, 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
                                    unscheduled payments of principal on
</TABLE>
 
                                      S-10
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<TABLE>
<S>                                 <C>
                                    the Mortgage Loans equal, in each case, to 100% less the
                                    applicable  percentage  for  the  Class  A  Certificates
                                    described above.
                                    Except  as  described  in the  next  paragraph,  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  1992-18  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.
                                    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 1992-18 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  and Class B-1 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
                                    Certificates is less than  such percentage was upon  the
                                    initial  issuance  of the  Series  1992-18 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   Sub-
                                    ordinated Certificates for such Distribution Date.
                                    In  the case  of the Class  B-1 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
</TABLE>
 
                                      S-11
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<TABLE>
<S>                                 <C>
                                    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  1992-18 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 Class B-1 Certificates.  In such a 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 Prepay-
                                    ments)--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  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 Certifi-
                                    cates, 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  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
</TABLE>
 
                                      S-12
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<TABLE>
<S>                                 <C>
                                    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
                                    liquidation  of  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  to  absorb  losses   on
                                    liquidated  Mortgage Loans, a disproportionate amount of
                                    prepayments  and  certain  unscheduled  recoveries  with
                                    respect  to the Mortgage Loans  will be allocated to the
                                    Class A Certificates. This allocation has the effect  of
                                    accelerating  the amortization  of the  Class A Certifi-
                                    cates while, in the absence of losses in respect of  the
                                    liquidation  of Mortgage Loans  or losses resulting from
                                    the bankruptcy of mortgagors, increasing the  respective
                                    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 exten-
                                    sion 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  $39,459,301)  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  to  be   approximately
                                    $23,676,301)  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-3,  Class B-2 and  Class B-1  Certificates),
                                    and second to the Class M Certificates.
                                    With  respect to any Distribution Date, the availability
                                    of the Class B and Class M Certificates to absorb losses
                                    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
                                    1992-18 Certificates, the amount of losses  attributable
                                    to  special hazards,  fraud and bankruptcy  that will be
                                    absorbed solely by
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                                      S-13
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    the holders of the Class B Certificates and then  solely
                                    by  the  holders of  the  Class M  Certificates  will be
                                    approximately 1.04%, 2.00%  and 0.20%, respectively,  of
                                    the aggregate principal balance of the Mortgage Loans as
                                    of   the   Cut-Off   Date   (approximately   $4,689,966,
                                    $9,019,166 and $905,417, 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, 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.
                                    It is possible that 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,  that  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
</TABLE>
 
                                      S-14
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    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  THE EXPECTED  YIELD.  AN  INVESTOR THAT
                                    PURCHASES ANY OFFERED CERTIFICATES  AT 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 THE EXPECTED YIELD.
                                    The yield  on the  Class  A-10 Certificates,  which  are
                                    expected  to be  offered at  a substantial  premium over
                                    their initial  prinicipal  balances, will  be  extremely
                                    sensitive  to both the timing  of receipt of prepayments
                                    and the  overall  rate  of prepayment  on  the  Mortgage
                                    Loans.  This particular  sensitivity is  separately dis-
                                    played  in   a  table   appearing  under   the   heading
                                    "Prepayment and Yield Considerations" in this Prospectus
                                    Supplement.  INVESTORS  IN THE  CLASS  A-10 CERTIFICATES
                                    SHOULD CONSIDER THE RISK THAT A RAPID RATE OF  PRINCIPAL
                                    PREPAYMENTS  ON THE  MORTGAGE LOANS COULD  RESULT IN THE
                                    FAILURE OF SUCH INVESTORS TO FULLY RECOVER THEIR  INTIAL
                                    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
                                    distributions 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   until   each   dollar
</TABLE>
 
                                      S-15
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    in reduction of the principal balance of the Certificate
                                    is  distributed to the investor. Low rates of prepayment
                                    may result in extension of the weighted average life  of
                                    a  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 Offered
                                    Certificates  under  various  prepayment  scenarios  are
                                    displayed  in  the  tables appearing  under  the heading
                                    "Prepayment  and  Yield  Considerations"  in  this  Pro-
                                    spectus 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 and Class M Certificates and each subclass of
                                    the  Class  B  Certificates will  be  designated  as the
                                    regular interests in the Upper-Tier REMIC, and the Class
                                    A-R Certificate  and  Class  A-LR  Certificate  will  be
                                    designated  as the residual  interests in the Upper-Tier
                                    REMIC and Lower-Tier REMIC, respectively.
                                    Beneficial  owners  of  the  Regular  Certificates   (as
                                    defined  herein)  will  be  required  to  report  income
                                    thereon  in  accordance  with  the  accrual  method   of
                                    accounting.  It is  anticipated that  the Class  A-8 and
                                    Class A-9  Certificates  will be  issued  with  original
                                    issue  discount in an amount equal  to the excess of the
                                    initial principal balances of such subclasses (plus four
                                    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-4, Class  A-5 and  Class A-6  Certificates
                                    will  be  issued at  a premium  and  that the  Class A-7
                                    Certificates and the Class M Certificates will be issued
                                    with DE  MINIMIS  original issue  discount  for  federal
                                    income tax purposes. Although not free from doubt, it is
                                    anticipated  that  the Class  A-10 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  price  (including
                                    accrued  interest),  and  the Seller  intends  to report
                                    income in respect  of such subclass  of Certificates  in
                                    this manner.
                                    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  the  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 AND
                                    CLASS  A-LR  CERTIFICATES   ARE  "NONECONOMIC   RESIDUAL
                                    INTERESTS,"   CERTAIN   TRANSFERS   OF   WHICH   MAY  BE
                                    DISREGARDED FOR FEDERAL INCOME TAX PURPOSES.
</TABLE>
 
                                      S-16
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    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 CERTIFI-
                                    CATES, 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  and, as such, 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-17
<PAGE>
                        DESCRIPTION OF THE CERTIFICATES
 
GENERAL
 
    The  Book-Entry Certificates  will be  issued only  in book-entry  form. 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 $600  initial principal  balance and integral  multiples of  $1
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  Underwriters),  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  Indirect Participants or
Beneficial Owners. Beneficial Owners will not be recognized by the Trustee,  the
 
                                      S-18
<PAGE>
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-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-19
<PAGE>
of each month or, if such day is not a business day, on the succeeding  business
day  (each,  a "Distribution  Date"), beginning  in July  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  and (ii) 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;
 
        (b) any unreimbursed Periodic Advances 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;
 
        (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
 
                                      S-20
<PAGE>
         (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 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  and  Class  B-3
    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
 
    The amount  of  interest which  will  accrue on  each  Subclass of  Class  A
Certificates  during each month 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
is the percentage  set forth  on the cover  of this  Prospectus Supplement.  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 0.50% and the sum of the Class  A
Subclass  Principal Balances of 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 and Class A-9 Certificates and  (ii)
the product of 1/12th of 8.50% and the Class A Subclass Principal Balance of the
 
                                      S-21
<PAGE>
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 8.50% and  (ii)
the Class A-LR Notional Amount. The Class A Subclass Interest Accrual Amount for
the  Class A-11  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 period minus (b) 8.50% and (ii) the
Class A-11 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.
 
    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 8.50%
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 8.50% 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  8.50% 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--
 
                                      S-22
<PAGE>
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  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  1992-18  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 0.25% per annum. See "Pooling and Servicing
Agreement--Servicing Compensation and Payment of Expenses" herein.
 
    The "Class A-11 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-11
Notional  Amount  with  respect   to  the  first   Distribution  Date  will   be
approximately $450,958,301 less any partial prepayments received in June 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-11
Certificates.  The  Class  A-LR  Notional  Amount  with  respect  to  the  first
Distribution Date will be $2,000.
 
    Shortfalls in collections of interest  as a result of 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. Shortfalls  in collections of
interest as  a  result  of  the  timing of  the  receipt  of  partial  principal
prepayments  on the Mortgage Loans will be  allocated first to the subclasses of
Class B  Certificates  in  reverse numerical  order  and  then to  the  Class  M
Certificates.  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
 
                                      S-23
<PAGE>
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."
 
    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.
 
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
 
                                      S-24
<PAGE>
additional amounts to which a 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-11
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-11 Certificates is $1,000.
 
  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),
less the amounts allocable  to principal of  any unreimbursed Periodic  Advances
previously  made by the Servicer  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 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 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.
 
                                      S-25
<PAGE>
    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 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 91.25%. 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  June  1997  to  and  including  the
Distribution  Date in  June 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 June 1998 to and including the Distribution Date
in June 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 June 1999 to and including the Distribution Date in June 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
June   2000    to    and   including    the    Distribution   Date    in    June
 
                                      S-26
<PAGE>
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 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 July  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 July 1998, 35% of the Original Subordinated Principal Balance, (c)  with
respect  to the Distribution Date in July 1999, 40% of the Original Subordinated
Principal Balance, (d) with respect to  the Distribution Date in July 2000,  45%
of  the Original  Subordinated Principal  Balance, and  (e) with  respect to the
Distribution Date  in July  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, 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 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
 
                                      S-27
<PAGE>
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  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  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  and Class  B-3  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 and Class  B-3 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-2 and Class B-3
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  and  Class  B-3 Certificates  by  the  Cut-Off  Date  Aggregate
Principal  Balance of  the Mortgage  Loans. The  Original Class  M Subordination
Level is expected to be approximately 5.25%. 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  and Class  B-3  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  and Class B-3 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  3.75%. 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 and  Class
B-3  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
 
    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  sum of  the  aggregate initial  Class  A
Subclass  Principal  Balances  of  the  Class A-11,  Class  A-R  and  Class A-LR
Certificates) divided by the initial Class A Principal Balance (which  fraction,
expressed as a percentage, is expected to be approximately 0.000729%) by (y) the
Class A Principal Distribution Amount will be
 
                                      S-28
<PAGE>
distributed in reduction of the Class A Subclass Principal Balances of the Class
A-11,  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 will  be
allocated  among and distributed  in reduction of the  principal balances of the
Subclasses of Class  A Certificates (other  than the Class  A-11, Class A-R  and
Class A-LR Certificates) as follows:
 
        FIRST,   concurrently,  approximately   87.286014%  to   the  Class  A-1
    Certificates, approximately  12.711556% to  the Class  A-3 Certificates  and
    approximately  0.002430% Class A-10 Certificates, until the Class A Subclass
    Principal Balance of the Class A-1 Certificates has been reduced to zero;
 
        SECOND,  concurrently,  approximately  87.286014%   to  the  Class   A-2
    Certificates,  approximately 12.711556%  to the  Class A-3  Certificates and
    approximately 0.002430% to the  Class A-10 Certificates,  until the Class  A
    Subclass Principal Balances of the Class A-2 and Class A-3 Certificates have
    been reduced to zero;
 
        THIRD,   concurrently,  approximately   99.997570%  to   the  Class  A-4
    Certificates and  approximately 0.002430%  to  the Class  A-10  Certificates
    until  the Class A Subclass Principal  Balance of the Class A-4 Certificates
    has been reduced to zero;
 
        FOURTH,  concurrently,  approximately  99.997570%   to  the  Class   A-5
    Certificates  and  approximately 0.002430%  to  the Class  A-10 Certificates
    until the Class A Subclass Principal  Balance of the Class A-5  Certificates
    has been reduced to zero;
 
        FIFTH,   concurrently,  approximately   99.997570%  to   the  Class  A-6
    Certificates and  approximately 0.002430%  to  the Class  A-10  Certificates
    until  the Class A Subclass Principal  Balance of the Class A-6 Certificates
    has been reduced to zero;
 
        SIXTH,  concurrently,  approximately   99.997570%  to   the  Class   A-7
    Certificates  and approximately  0.002430% to  the Class  A-10 Certificates,
    until the Class A Subclass Principal  Balance of the Class A-7  Certificates
    has been reduced to zero;
 
        SEVENTH,   concurrently,  approximately  99.997570%  to  the  Class  A-8
    Certificates and  approximately 0.002430%  to the  Class A-10  Certificates,
    until  the Class A Subclass Principal  Balance of the Class A-8 Certificates
    has been reduced to zero; and
 
        EIGHTH,  concurrently,  approximately  99.997570%   to  the  Class   A-9
    Certificates  and  approximately 0.002430%  to  the Class  A-10 Certificates
    until the Class A Subclass Principal Balance of each such Subclass has  been
    reduced to zero.
 
    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.
 
ADDITIONAL RIGHTS OF THE CLASS A-R AND CLASS A-LR CERTIFICATEHOLDERS
 
    The Class A-R Certificate and Class A-LR Certificate 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
Certificate  and Class A-LR Certificate 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 1992-18
Certificates, after distributions in respect of any accrued but unpaid  interest
on  the  Series 1992-18  Certificates and  after  distributions in  reduction of
principal balance
 
                                      S-29
<PAGE>
have reduced the principal balances of the Series 1992-18 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 1992-18 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 1992-18 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.
 
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 either  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.
 
                                      S-30
<PAGE>
    In addition, the Class A-R and Class A-LR Certificates may not 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  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 Certificates will also include the  Class
A-11  Notional Amount and the weighted average Net Mortgage Interest Rate of the
Mortgage Loans applicable to such  Distribution Date minus 8.50%. 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-31
<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-32
<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  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  1992-18 Certificates, the  "Special
Hazard  Loss Amount" with  respect thereto will be  equal to approximately 1.04%
(approximately $4,689,966) 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-33
<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 1992-18  Certificates,  the "Fraud  Loss  Amount"  with
respect  thereto will be equal to approximately 2.00% (approximately $9,019,166)
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, 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 1992-18 Certificates, the "Bankruptcy  Loss
Amount" with respect thereto will be equal to approximately 0.20% (approximately
$905,417) 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 S&P  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 S&P 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
 
                                      S-34
<PAGE>
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.
 
    Since  the  initial principal  balance of  the Class  B Certificates  in the
aggregate will be approximately $23,676,301, the risk of Special Hazard  Losses,
Fraud  Losses and Bankruptcy Losses will be borne by the Class B Certificates to
a lesser extent (I.E.,  only up to  the Special Hazard  Loss Amount, Fraud  Loss
Amount and Bankruptcy Loss Amount, respectively) than the risk of other Realized
Losses,  which they  will bear  to the  full extent  of their  initial principal
balance.  See   "The  Trust   Estates--Mortgage  Loans--   Representations   and
Warranties"  and "--Insurance Policies," "Certain  Legal Aspects of the Mortgage
Loans--Environmental   Considerations"   and   "Servicing   of   the    Mortgage
Loans--Enforcement  of Due-on-Sale Clauses;  Realization Upon Defaulted Mortgage
Loans" in the Prospectus.
 
                                      S-35
<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 30 years. The  Mortgage Loans are expected to include
1,703 promissory notes, to have an aggregate unpaid principal balance as of  the
Cut-Off  Date (the "Cut-Off Date  Aggregate Principal Balance") of approximately
$450,958,301, to be secured  by first liens (the  "Mortgages") on one- to  four-
family  residential  properties (the  "Mortgaged  Properties") and  to  have the
additional characteristics described below and in the Prospectus.
 
    No Mortgage  Loan is  a Buy-Down  Loan or  a Subsidy  Loan. See  "The  Trust
Estates--Mortgage  Loans"  in the  Prospectus. No  Mortgage Loan  was originated
pursuant  to  PHMC's  relocation  mortgage  program.  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'  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 $28,885 or  more than  $1,496,052, and the
average unpaid  principal  balance of  the  Mortgage  Loans is  expected  to  be
approximately  $264,802. The latest stated maturity  date of any of the Mortgage
Loans is expected  to be June  1, 2022; 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, 1,616 of
the Mortgaged Properties, which secure approximately 95.83% of the Cut-Off  Date
Aggregate  Principal Balance  of the  Mortgage Loans,  are expected  to be owner
occupied primary residences  and 87  of the Mortgaged  Properties, which  secure
approximately  4.17%  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.
 
- ------------------------
(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 1992-18 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
    1992-18 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-36
<PAGE>
    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>
 8.750%................................................          86   $     23,910,453.88         5.30%
 8.875%................................................         138         36,442,977.84         8.08
 9.000%................................................         201         59,094,901.03        13.10
 9.125%................................................         259         71,102,700.15        15.77
 9.250%................................................         322         82,159,826.41        18.23
 9.375%................................................         269         68,614,634.19        15.22
 9.500%................................................         216         54,312,818.31        12.04
 9.625%................................................         112         31,678,006.21         7.02
 9.750%................................................          57         12,521,792.54         2.78
 9.875%................................................          24          6,795,538.80         1.51
10.000%................................................           9          1,268,517.18         0.28
10.125%................................................           3            603,616.14         0.13
10.250%................................................           4          1,999,521.03         0.44
10.375%................................................           1            233,513.99         0.05
10.625%................................................           1            142,609.42         0.03
10.875%................................................           1             76,874.31         0.02
                                                              -----   -------------------      -------
      Total............................................       1,703   $    450,958,301.43       100.00%
                                                              -----   -------------------      -------
                                                              -----   -------------------      -------
</TABLE>
 
As  of the  Cut-Off Date,  the weighted  average Mortgage  Interest Rate  of the
Mortgage Loans  is  expected to  be  approximately  9.248% 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 0.25%  per
annum.  As of the Cut-Off Date, the  weighted average Net Mortgage Interest Rate
of the Mortgage Loans is expected to be approximately 8.998% per annum.
 
                                      S-37
<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>
281.............................................................           1   $         72,205.67         0.02%
304.............................................................           1            142,609.42         0.03
315.............................................................           1            242,950.63         0.05
327.............................................................           1             76,874.31         0.02
347.............................................................           1            243,398.45         0.05
348.............................................................           1            208,817.22         0.05
349.............................................................           2            400,184.66         0.09
352.............................................................           4            695,622.22         0.15
353.............................................................          12          1,923,012.07         0.43
354.............................................................          13          3,338,920.15         0.74
355.............................................................          47         14,368,950.01         3.19
356.............................................................          36          9,895,873.52         2.19
357.............................................................         114         31,008,325.37         6.88
358.............................................................         841        235,488,552.74        52.21
359.............................................................         589        144,335,704.99        32.01
360.............................................................          39          8,516,300.00         1.89
                                                                       -----   -------------------      -------
      Total.....................................................       1,703   $    450,958,301.43       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 358 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>
1985............................................................           1   $         72,205.67         0.02%
1987............................................................           1            142,609.42         0.03
1988............................................................           1            242,950.63         0.05
1989............................................................           1             76,874.31         0.02
1991............................................................          83         21,870,687.81         4.85
1992............................................................       1,616        428,552,973.59        95.03
                                                                       -----   -------------------      -------
      Total.....................................................       1,703   $    450,958,301.43       100.00%
                                                                       -----   -------------------      -------
                                                                       -----   -------------------      -------
</TABLE>
 
It is expected that the earliest month  and year of origination of any  Mortgage
Loan was October 1985 and the latest month and year of origination was May 1992.
 
                                      S-38
<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.........................................         138   $     35,749,887.44         7.93%
50.01-55.00%...........................................          54         15,052,394.58         3.34
55.01-60.00%...........................................          95         26,300,074.29         5.83
60.01-65.00%...........................................         103         31,870,797.92         7.07
65.01-70.00%...........................................         199         58,560,708.41        12.99
70.01-75.00%...........................................         454        112,682,841.77        24.98
75.01-80.00%...........................................         510        129,713,931.93        28.76
80.01-85.00%...........................................          16          4,583,076.43         1.02
85.01-90.00%...........................................         134         36,444,588.66         8.08
                                                              -----   -------------------      -------
      Total............................................       1,703   $    450,958,301.43       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  22.64%  and  90.00%,
respectively, and the weighted average Loan-to-Value Ratio at origination of the
Mortgage Loans is expected to be approximately 71%. 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  42 of  the  Mortgage  Loans having  Loan-to-Value  Ratios  at
origination  in excess of  80%, representing approximately  2.63% 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.....................................         939   $    293,926,298.27        65.18%
Asset and Income Verification..........................          16          3,543,258.33         0.79
Asset and Mortgage Verification........................         379         88,142,058.14        19.55
Income and Mortgage Verification.......................           3            781,546.39         0.17
Asset Verification.....................................         157         27,565,697.31         6.11
Mortgage Verification..................................          95         21,248,045.00         4.71
Preferred Processing...................................         114         15,751,397.99         3.49
                                                              -----   -------------------      -------
      Total............................................       1,703   $    450,958,301.43       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-39
<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.........................         452   $     50,740,439.10        11.25%
$200,001-$250,000......................................         374         85,981,606.85        19.07
$250,001-$300,000......................................         348         95,500,290.11        21.19
$300,001-$350,000......................................         198         64,617,652.65        14.33
$350,001-$400,000......................................         135         50,862,061.50        11.28
$400,001-$450,000......................................          75         31,948,269.01         7.08
$450,001-$500,000......................................          50         24,201,115.18         5.37
$500,001-$550,000......................................          20         10,435,796.31         2.31
$550,001-$600,000......................................          26         15,076,080.90         3.34
$600,001-$650,000......................................           4          2,525,223.43         0.56
$650,001-$700,000......................................           7          4,767,275.53         1.06
$700,001-$750,000......................................           1            746,511.99         0.17
$750,001-$800,000......................................           3          2,327,271.33         0.52
$800,001-$850,000......................................           1            831,760.41         0.18
$850,001-$900,000......................................           1            871,092.39         0.19
$900,001-$950,000......................................           2          1,858,657.32         0.41
$950,001-$1,000,000....................................           2          1,998,492.62         0.44
$1,250,001-$1,300,000..................................           1          1,280,625.30         0.28
$1,400,001-$1,450,000..................................           1          1,398,925.00         0.31
$1,450,001-$1,500,000..................................           2          2,989,154.50         0.66
                                                              -----   -------------------      -------
      Total............................................       1,703   $    450,958,301.43       100.00%
                                                              -----   -------------------      -------
                                                              -----   -------------------      -------
</TABLE>
 
As of the  Cut-Off Date, the  average unpaid principal  balance of the  Mortgage
Loans  is expected  to be  approximately $264,802. 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 61.89%
and  73.43%,  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.................................       1,598   $    433,488,004.22        96.12%
Two- to four-family units..............................           3          1,164,979.45         0.26
Condominiums
    High-rise (four stories or more)...................          21          4,181,785.59         0.93
    Low-rise (less than four stories)..................          71         10,670,935.82         2.37
Planned unit developments..............................           6            979,734.64         0.22
Townhouses.............................................           4            472,861.71         0.10
                                                              -----   -------------------      -------
      Total............................................       1,703   $    450,958,301.43       100.00%
                                                              -----   -------------------      -------
                                                              -----   -------------------      -------
</TABLE>
 
                                      S-40
<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.........................................................           2   $        117,689.67         0.03%
Arizona.........................................................          16          2,417,709.92         0.54
Arkansas........................................................           1            234,955.18         0.05
California......................................................         944        293,740,036.43        65.13
Colorado........................................................          12          3,389,218.21         0.75
Connecticut.....................................................          29          8,079,787.75         1.79
Delaware........................................................           3            459,555.85         0.10
District of Columbia............................................           3          1,522,849.73         0.34
Florida.........................................................          70         10,507,196.12         2.33
Georgia.........................................................          16          2,264,045.47         0.50
Hawaii..........................................................           1            559,709.68         0.12
Idaho...........................................................           2            609,623.82         0.14
Illinois........................................................          22          5,093,188.66         1.13
Indiana.........................................................           5          1,548,520.83         0.34
Kansas..........................................................           1            262,504.26         0.06
Kentucky........................................................           1             99,948.15         0.02
Louisiana.......................................................           2            386,636.71         0.09
Maine...........................................................           3            233,392.47         0.05
Maryland........................................................          30          8,594,088.81         1.91
Massachusetts...................................................          21          4,579,996.16         1.02
Michigan........................................................           8          1,317,108.05         0.29
Minnesota.......................................................           7          1,687,390.18         0.37
Missouri........................................................           1            598,336.54         0.13
Montana.........................................................           1            148,916.46         0.03
Nevada..........................................................          15          3,345,433.50         0.74
New Hampshire...................................................           2            581,575.70         0.13
New Jersey......................................................         166         33,853,125.46         7.51
New Mexico......................................................           8          1,301,333.94         0.29
New York........................................................         152         28,563,109.93         6.33
North Carolina..................................................           5          1,118,317.32         0.25
Ohio............................................................           7          2,430,606.74         0.54
Oklahoma........................................................           2            124,933.01         0.03
Oregon..........................................................           3            671,061.89         0.15
Pennsylvania....................................................          43          8,070,180.31         1.79
Rhode Island....................................................           3            518,349.53         0.11
South Carolina..................................................           5            958,178.66         0.21
Tennessee.......................................................           5          1,107,301.82         0.25
Texas...........................................................          40          8,734,377.08         1.94
Utah............................................................           4          1,245,555.81         0.28
Vermont.........................................................           5            555,686.29         0.12
Virginia........................................................          20          4,950,832.14         1.10
Washington......................................................          15          4,078,099.98         0.90
Wisconsin.......................................................           2            297,837.21         0.07
                                                                       -----   -------------------      -------
      Total.....................................................       1,703   $    450,958,301.43       100.00%
                                                                       -----   -------------------      -------
                                                                       -----   -------------------      -------
</TABLE>
 
No more than approximately 1.04% 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-41
<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...............................................         417   $     98,918,195.54        21.94%
Other Originators...............................................       1,286        352,040,105.89        78.06
                                                                       -----   -------------------      -------
      Total.....................................................       1,703   $    450,958,301.43       100.00%
                                                                       -----   -------------------      -------
                                                                       -----   -------------------      -------
</TABLE>
 
It is expected that, as of the Cut-Off Date, two of the "Other Originators" will
have accounted for approximately 7.06%  and 5.38%, respectively, of the  Cut-Off
Date  Aggregate Principal Balance of the  Mortgage Loans. No other 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........................................................         633   $    141,344,330.16        31.34%
Rate/Term Refinance.............................................         714        209,888,654.17        46.55
Equity Take Out Refinance.......................................         356         99,725,317.10        22.11
                                                                       -----   -------------------      -------
      Total.....................................................       1,703   $    450,958,301.43       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  1992-18
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
 
                                      S-42
<PAGE>
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 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  three
months  ended March 31, 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
$4,497,908,446, 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,  mortgage  loans  originated in  connection  with  the  puchases of
residences by  relocated employees  ("Relocation Mortgage  Loans"), and  on  the
Fixed Program Loans, other than Relocation Mortgage Loans ("Fixed 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
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 30 years, will be  comparable
to  that  of the  total  Program Loans,  the Fixed  Program  Loans or  the Fixed
Non-relocation Program Loans.
 
                                      S-43
<PAGE>
                              TOTAL PROGRAM LOANS
 
<TABLE>
<CAPTION>
                                            AS OF                       AS OF                      AS OF
                                      DECEMBER 31, 1990           DECEMBER 31, 1991           MARCH 31, 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    150,112  $   24,426,074
                                 -----------  --------------  ---------  --------------  ---------  --------------
                                 -----------  --------------  ---------  --------------  ---------  --------------
Period of Delinquency(1)
  30 to 59 days................       2,439   $      319,663      2,973  $      396,403      2,506  $      341,352
  60 to 89 days................         697           93,302        706         103,710        679          93,031
  90 days or more..............         902          145,245      1,268         220,943      1,290         229,873
                                 -----------  --------------  ---------  --------------  ---------  --------------
Total Delinquent Loans.........       4,038   $      558,210      4,947  $      721,056      4,475  $      664,256
                                 -----------  --------------  ---------  --------------  ---------  --------------
                                 -----------  --------------  ---------  --------------  ---------  --------------
Percent of Portfolio...........        4.07%            4.07%      3.61%           3.36%      2.98%           2.72%
</TABLE>
<TABLE>
<CAPTION>
                                           AS OF                       AS OF                       AS OF
                                     DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                 --------------------------  --------------------------  --------------------------
<S>                              <C>                         <C>                         <C>
                                                           (DOLLAR AMOUNTS IN THOUSANDS)
 
Foreclosures(2)................         $    132,326                $    189,563                $    214,370
Foreclosure Ratio(3)...........                 0.96%                       0.88%                       0.88%
 
<CAPTION>
 
                                         YEAR ENDED                  YEAR ENDED              THREE MONTHS ENDED
                                     DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                 --------------------------  --------------------------  --------------------------
                                                           (DOLLAR AMOUNTS IN THOUSANDS)
<S>                              <C>                         <C>                         <C>
 
Net Gain (Loss)(4).............         $    (4,889)                $   (10,979)                $    (3,795)
Net Gain (Loss) Ratio(5).......               (0.04)%                     (0.05)%                     (0.02)%
</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-44
<PAGE>
                              FIXED PROGRAM LOANS
 
<TABLE>
<CAPTION>
                                            AS OF                       AS OF                      AS OF
                                      DECEMBER 31, 1990           DECEMBER 31, 1991           MARCH 31, 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    131,825  $   21,221,873
                                 -----------  --------------  ---------  --------------  ---------  --------------
                                 -----------  --------------  ---------  --------------  ---------  --------------
Period of Delinquency(1)
  30 to 59 days................       1,823   $      227,468      2,379  $      311,415      1,991  $      268,380
  60 to 89 days................         456           52,748        534          72,567        523          68,151
  90 days or more..............         538           72,393        859         133,313        921         153,034
                                 -----------  --------------  ---------  --------------  ---------  --------------
Total Delinquent Loans.........       2,817   $      352,609      3,772  $      517,295      3,435  $      489,565
                                 -----------  --------------  ---------  --------------  ---------  --------------
                                 -----------  --------------  ---------  --------------  ---------  --------------
Percent of Fixed Program Loan
 Portfolio.....................        3.27%            3.02%      3.13%           2.78%      2.61%           2.31%
</TABLE>
<TABLE>
<CAPTION>
                                           AS OF                       AS OF                       AS OF
                                     DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                 --------------------------  --------------------------  --------------------------
<S>                              <C>                         <C>                         <C>
                                                           (DOLLAR AMOUNTS IN THOUSANDS)
 
Foreclosures(2)................          $   48,681                  $   93,405                 $    107,187
Foreclosure Ratio(3)...........                0.42%                       0.50%                        0.51%
 
<CAPTION>
 
                                         YEAR ENDED                  YEAR ENDED              THREE MONTHS ENDED
                                     DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                 --------------------------  --------------------------  --------------------------
                                                           (DOLLAR AMOUNTS IN THOUSANDS)
<S>                              <C>                         <C>                         <C>
 
Net Gain (Loss)(4).............          $   (1,190)                 $   (3,936)                $     (1,800)
Net Gain (Loss) Ratio(5).......               (0.01)%                     (0.02)%                      (0.01)%
</TABLE>
 
                                      S-45
<PAGE>
                       FIXED NON-RELOCATION PROGRAM LOANS
 
<TABLE>
<CAPTION>
                                            AS OF                        AS OF                        AS OF
                                      DECEMBER 31, 1990            DECEMBER 31, 1991             MARCH 31, 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 Non-relocation Program
 Loans..........................      59,295   $   7,990,152      84,246   $   13,352,914      95,263   $   15,882,603
                                  -----------  -------------  -----------  --------------  -----------  --------------
                                  -----------  -------------  -----------  --------------  -----------  --------------
Period of Delinquency(1)........
  30 to 59 days.................       1,603   $     201,122       2,071   $      272,540       1,781   $      242,261
  60 to 89 days.................         426          49,953         495           67,553         480           62,671
  90 days or more...............         508          68,285         801          126,752         858          144,897
                                  -----------  -------------  -----------  --------------  -----------  --------------
Total Delinquent Loans..........       2,537   $     319,360       3,367   $      466,845       3,119   $      449,829
                                  -----------  -------------  -----------  --------------  -----------  --------------
                                  -----------  -------------  -----------  --------------  -----------  --------------
Percent of
 Fixed Non-relocation Program
 Loan Portfolio.................        4.28%           4.00%       4.00%            3.50%       3.27 %           2.83%
</TABLE>
<TABLE>
<CAPTION>
                                          AS OF                       AS OF                       AS OF
                                    DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                --------------------------  --------------------------  --------------------------
                                                          (DOLLAR AMOUNTS IN THOUSANDS)
 
<S>                             <C>                         <C>                         <C>
Foreclosures(2)...............          $   47,755                  $   90,861                 $    104,789
Foreclosure Ratio(3)..........                0.60%                       0.68%                        0.66%
 
<CAPTION>
 
                                        YEAR ENDED                  YEAR ENDED              THREE MONTHS ENDED
                                    DECEMBER 31, 1990           DECEMBER 31, 1991             MARCH 31, 1992
                                --------------------------  --------------------------  --------------------------
                                                          (DOLLAR AMOUNTS IN THOUSANDS)
<S>                             <C>                         <C>                         <C>
 
Net Gain (Loss)(4)............          $  (1,037)                  $  (3,746)                 $    (1,758)
Net Gain (Loss) Ratio(5)......              (0.01)%                     (0.03)%                      (0.01)%
</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
 
                                      S-46
<PAGE>
properties  are concentrated  in certain  geographic areas.  The Seller believes
that the changes  in the 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
addition,  all  of the  Mortgage Loans  contain  due-on-sale clauses  which will
generally be  exercised  upon the  sale  of the  related  Mortgaged  Properties.
 
                                      S-47
<PAGE>
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 1992-18 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. The extent to which any Subclass
of Class A Certificates or the Class M Certificates are purchased at a  discount
or  a premium, the  degree to which the  timing of payments  on such Subclass or
Class is sensitive to prepayments 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 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
 
                                      S-48
<PAGE>
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.
 
    As indicated under "Federal Income Tax Considerations" herein, the Class A-R
and Class A-LR Certificateholders'  REMIC taxable income  and the tax  liability
thereon  will 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 CERTIFICATE AND THE CLASS A-LR CERTIFICATE 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.
 
    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 tables below, "0% SPA" assumes prepayment rates equal
to  0%  of  SPA,  i.e.,  no  prepayments.  Correspondingly,  "50%  SPA"  assumes
prepayment rates equal to 50% 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 July 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 June 30, 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 30 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
 
                                      S-49
<PAGE>
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-50
<PAGE>
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                                                                                               CLASS A-2
                                                                                                               CERTIFICATES
                                                             CLASS A-1                                         AT THE
                                                        CERTIFICATES AT THE                                    FOLLOWING
                                                       FOLLOWING PERCENTAGES                                   PERCENTAGES
                                                              OF SPA                                            OF SPA
<S>                   <C>        <C>          <C>          <C>          <C>          <C>          <C>          <C>        <C>
 
<CAPTION>
    DISTRIBUTION
        DATE             0%          50%         100%         150%         250%         300%         400%         0%
<S>                   <C>        <C>          <C>          <C>          <C>          <C>          <C>          <C>        <C>
Initial.............
                            100         100          100          100          100          100          100
                                                                                                                     100
June 1993...........
                             95          88           81           74           60           54           40
                                                                                                                     100
June 1994...........
                             90          66           43           21            0            0            0
                                                                                                                     100
June 1995...........
                             84          38            0            0            0            0            0
                                                                                                                     100
June 1996...........
                             77           9            0            0            0            0            0
                                                                                                                     100
June 1997...........
                             70           0            0            0            0            0            0
                                                                                                                     100
June 1998...........
                             62           0            0            0            0            0            0
                                                                                                                     100
June 1999...........
                             54           0            0            0            0            0            0
                                                                                                                     100
June 2000...........
                             44           0            0            0            0            0            0
                                                                                                                     100
June 2001...........
                             34           0            0            0            0            0            0
                                                                                                                     100
June 2002...........
                             23           0            0            0            0            0            0
                                                                                                                     100
June 2003...........
                             10           0            0            0            0            0            0
                                                                                                                     100
June 2004...........
                              0           0            0            0            0            0            0
                                                                                                                      97
June 2005...........
                              0           0            0            0            0            0            0
                                                                                                                      84
June 2006...........
                              0           0            0            0            0            0            0
                                                                                                                      70
June 2007...........
                              0           0            0            0            0            0            0
                                                                                                                      54
June 2008...........
                              0           0            0            0            0            0            0
                                                                                                                      37
June 2009...........
                              0           0            0            0            0            0            0
                                                                                                                      18
June 2010...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2011...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2012...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2013...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2014...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2015...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2016...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2017...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2018...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2019...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2020...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2021...........
                              0           0            0            0            0            0            0
                                                                                                                       0
June 2022...........
                              0           0            0            0            0            0            0
                                                                                                                       0
Weighted Average
  Life (years)(1)...       6.95        2.53         1.78         1.46         1.12         1.01         0.87       15.13
 
<CAPTION>
 
                                                                                                               CLASS A-3
                                                                                                          CERTIFICATES AT THE
                                                                                                         FOLLOWING PERCENTAGES
                                                                                                                OF SPA
<S>                   <C>          <C>
    DISTRIBUTION
        DATE              50%         100%         150%         250%         300%         400%         0%         50%       100%
<S>                   <C>          <C>
Initial.............
 
                             100          100          100          100          100          100
                                                                                                          100        100        100
 
June 1993...........
 
                             100          100          100          100          100          100
                                                                                                           98         94         91
 
June 1994...........
 
                             100          100          100           79           60           22
                                                                                                           95         84         74
 
June 1995...........
 
                             100           94           57            0            0            0
                                                                                                           92         71         50
 
June 1996...........
 
                             100           52            0            0            0            0
                                                                                                           89         58         28
 
June 1997...........
 
                              83           13            0            0            0            0
                                                                                                           86         45          7
 
June 1998...........
 
                              60            0            0            0            0            0
                                                                                                           82         32          0
 
June 1999...........
 
                              37            0            0            0            0            0
                                                                                                           78         20          0
 
June 2000...........
 
                              15            0            0            0            0            0
                                                                                                           74          8          0
 
June 2001...........
 
                               0            0            0            0            0            0
                                                                                                           69          0          0
 
June 2002...........
 
                               0            0            0            0            0            0
                                                                                                           64          0          0
 
June 2003...........
 
                               0            0            0            0            0            0
                                                                                                           58          0          0
 
June 2004...........
 
                               0            0            0            0            0            0
                                                                                                           52          0          0
 
June 2005...........
 
                               0            0            0            0            0            0
                                                                                                           45          0          0
 
June 2006...........
 
                               0            0            0            0            0            0
                                                                                                           37          0          0
 
June 2007...........
 
                               0            0            0            0            0            0
                                                                                                           29          0          0
 
June 2008...........
 
                               0            0            0            0            0            0
                                                                                                           20          0          0
 
June 2009...........
 
                               0            0            0            0            0            0
                                                                                                           10          0          0
 
June 2010...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2011...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2012...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2013...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2014...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2015...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2016...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2017...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2018...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2019...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2020...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2021...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
June 2022...........
 
                               0            0            0            0            0            0
                                                                                                            0          0          0
 
Weighted Average
  Life (years)(1)...        6.48         4.10         3.16         2.34         2.12         1.81       11.32       4.64       3.02
 
<CAPTION>
 
                                                                                                 CLASS A-4
                                                                                            CERTIFICATES AT THE
                                                                                           FOLLOWING PERCENTAGES
                                                                                                  OF SPA
    DISTRIBUTION
        DATE             150%         250%         300%         400%         0%         50%       100%       150%        250%
Initial.............
 
                             100          100          100          100
                                                                                100        100        100        100         100
June 1993...........
 
                              88           82           78           72
                                                                                100        100        100        100         100
June 1994...........
 
                              63           42           32           12
                                                                                100        100        100        100         100
June 1995...........
 
                              30            0            0            0
                                                                                100        100        100        100          84
June 1996...........
 
                               0            0            0            0
                                                                                100        100        100        100           0
June 1997...........
 
                               0            0            0            0
                                                                                100        100        100         42           0
June 1998...........
 
                               0            0            0            0
                                                                                100        100         74          0           0
June 1999...........
 
                               0            0            0            0
                                                                                100        100         36          0           0
June 2000...........
 
                               0            0            0            0
                                                                                100        100          1          0           0
June 2001...........
 
                               0            0            0            0
                                                                                100         92          0          0           0
June 2002...........
 
                               0            0            0            0
                                                                                100         68          0          0           0
June 2003...........
 
                               0            0            0            0
                                                                                100         45          0          0           0
June 2004...........
 
                               0            0            0            0
                                                                                100         21          0          0           0
June 2005...........
 
                               0            0            0            0
                                                                                100          0          0          0           0
June 2006...........
 
                               0            0            0            0
                                                                                100          0          0          0           0
June 2007...........
 
                               0            0            0            0
                                                                                100          0          0          0           0
June 2008...........
 
                               0            0            0            0
                                                                                100          0          0          0           0
June 2009...........
 
                               0            0            0            0
                                                                                100          0          0          0           0
June 2010...........
 
                               0            0            0            0
                                                                                 97          0          0          0           0
June 2011...........
 
                               0            0            0            0
                                                                                 72          0          0          0           0
June 2012...........
 
                               0            0            0            0
                                                                                 44          0          0          0           0
June 2013...........
 
                               0            0            0            0
                                                                                 13          0          0          0           0
June 2014...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2015...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2016...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2017...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2018...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2019...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2020...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2021...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
June 2022...........
 
                               0            0            0            0
                                                                                  0          0          0          0           0
Weighted Average
  Life (years)(1)...        2.36         1.77         1.60         1.37       19.76      10.81       6.67       4.91        3.40
 
<CAPTION>
 
    DISTRIBUTION
        DATE             300%         400%
Initial.............
 
                             100          100
June 1993...........
 
                             100          100
June 1994...........
 
                             100          100
June 1995...........
 
                              47            0
June 1996...........
 
                               0            0
June 1997...........
 
                               0            0
June 1998...........
 
                               0            0
June 1999...........
 
                               0            0
June 2000...........
 
                               0            0
June 2001...........
 
                               0            0
June 2002...........
 
                               0            0
June 2003...........
 
                               0            0
June 2004...........
 
                               0            0
June 2005...........
 
                               0            0
June 2006...........
 
                               0            0
June 2007...........
 
                               0            0
June 2008...........
 
                               0            0
June 2009...........
 
                               0            0
June 2010...........
 
                               0            0
June 2011...........
 
                               0            0
June 2012...........
 
                               0            0
June 2013...........
 
                               0            0
June 2014...........
 
                               0            0
June 2015...........
 
                               0            0
June 2016...........
 
                               0            0
June 2017...........
 
                               0            0
June 2018...........
 
                               0            0
June 2019...........
 
                               0            0
June 2020...........
 
                               0            0
June 2021...........
 
                               0            0
June 2022...........
 
                               0            0
Weighted Average
  Life (years)(1)...        3.01         2.52
</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-51
<PAGE>
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                                                                                                  CLASS A-6
                                                            CLASS A-5                                        CERTIFICATES AT THE
                                                       CERTIFICATES AT THE                                        FOLLOWING
                                                      FOLLOWING PERCENTAGES                                      PERCENTAGES
                                                             OF SPA                                                 OF SPA
<S>                   <C>        <C>        <C>          <C>          <C>          <C>          <C>          <C>        <C>
 
<CAPTION>
    DISTRIBUTION
        DATE             0%         50%        100%         150%         250%         300%         400%         0%         50%
<S>                   <C>        <C>        <C>          <C>          <C>          <C>          <C>          <C>        <C>
Initial.............
                            100        100         100          100          100          100          100
                                                                                                                   100        100
June 1993...........
                            100        100         100          100          100          100          100
                                                                                                                   100        100
June 1994...........
                            100        100         100          100          100          100          100
                                                                                                                   100        100
June 1995...........
                            100        100         100          100          100          100           69
                                                                                                                   100        100
June 1996...........
                            100        100         100          100           92           30            0
                                                                                                                   100        100
June 1997...........
                            100        100         100          100            0            0            0
                                                                                                                   100        100
June 1998...........
                            100        100         100           89            0            0            0
                                                                                                                   100        100
June 1999...........
                            100        100         100           30            0            0            0
                                                                                                                   100        100
June 2000...........
                            100        100         100            0            0            0            0
                                                                                                                   100        100
June 2001...........
                            100        100          59            0            0            0            0
                                                                                                                   100        100
June 2002...........
                            100        100          21            0            0            0            0
                                                                                                                   100        100
June 2003...........
                            100        100           0            0            0            0            0
                                                                                                                   100        100
June 2004...........
                            100        100           0            0            0            0            0
                                                                                                                   100        100
June 2005...........
                            100         97           0            0            0            0            0
                                                                                                                   100        100
June 2006...........
                            100         67           0            0            0            0            0
                                                                                                                   100        100
June 2007...........
                            100         37           0            0            0            0            0
                                                                                                                   100        100
June 2008...........
                            100          6           0            0            0            0            0
                                                                                                                   100        100
June 2009...........
                            100          0           0            0            0            0            0
                                                                                                                   100         80
June 2010...........
                            100          0           0            0            0            0            0
                                                                                                                   100         56
June 2011...........
                            100          0           0            0            0            0            0
                                                                                                                   100         31
June 2012...........
                            100          0           0            0            0            0            0
                                                                                                                   100          5
June 2013...........
                            100          0           0            0            0            0            0
                                                                                                                   100          0
June 2014...........
                             73          0           0            0            0            0            0
                                                                                                                   100          0
June 2015...........
                             25          0           0            0            0            0            0
                                                                                                                   100          0
June 2016...........
                              0          0           0            0            0            0            0
                                                                                                                    78          0
June 2017...........
                              0          0           0            0            0            0            0
                                                                                                                    31          0
June 2018...........
                              0          0           0            0            0            0            0
                                                                                                                     0          0
June 2019...........
                              0          0           0            0            0            0            0
                                                                                                                     0          0
June 2020...........
                              0          0           0            0            0            0            0
                                                                                                                     0          0
June 2021...........
                              0          0           0            0            0            0            0
                                                                                                                     0          0
June 2022...........
                              0          0           0            0            0            0            0
                                                                                                                     0          0
Weighted Average
  Life (years)(1)...      22.51      14.59        9.29         6.69         4.44         3.87         3.15       24.62      18.25
 
<CAPTION>
 
                                                                                                     CLASS A-7
                                                                                                CERTIFICATES AT THE
                                                                                               FOLLOWING PERCENTAGES
                                                                                                       OF SPA
<S>                   <C>
    DISTRIBUTION
        DATE            100%        150%         250%         300%         400%         0%         50%       100%       150%
<S>                   <C>
Initial.............
 
                            100         100          100          100          100
                                                                                           100        100        100        100
 
June 1993...........
 
                            100         100          100          100          100
                                                                                           100        100        100        100
 
June 1994...........
 
                            100         100          100          100          100
                                                                                           100        100        100        100
 
June 1995...........
 
                            100         100          100          100          100
                                                                                           100        100        100        100
 
June 1996...........
 
                            100         100          100          100           34
                                                                                           100        100        100        100
 
June 1997...........
 
                            100         100           94           38            0
                                                                                           100        100        100        100
 
June 1998...........
 
                            100         100           29            0            0
                                                                                           100        100        100        100
 
June 1999...........
 
                            100         100            0            0            0
                                                                                           100        100        100        100
 
June 2000...........
 
                            100          82            0            0            0
                                                                                           100        100        100        100
 
June 2001...........
 
                            100          45            0            0            0
                                                                                           100        100        100        100
 
June 2002...........
 
                            100          12            0            0            0
                                                                                           100        100        100        100
 
June 2003...........
 
                             87           0            0            0            0
                                                                                           100        100        100         84
 
June 2004...........
 
                             59           0            0            0            0
                                                                                           100        100        100         61
 
June 2005...........
 
                             32           0            0            0            0
                                                                                           100        100        100         40
 
June 2006...........
 
                              7           0            0            0            0
                                                                                           100        100        100         20
 
June 2007...........
 
                              0           0            0            0            0
                                                                                           100        100         85          2
 
June 2008...........
 
                              0           0            0            0            0
                                                                                           100        100         66          0
 
June 2009...........
 
                              0           0            0            0            0
                                                                                           100        100         47          0
 
June 2010...........
 
                              0           0            0            0            0
                                                                                           100        100         29          0
 
June 2011...........
 
                              0           0            0            0            0
                                                                                           100        100         12          0
 
June 2012...........
 
                              0           0            0            0            0
                                                                                           100        100          0          0
 
June 2013...........
 
                              0           0            0            0            0
                                                                                           100         83          0          0
 
June 2014...........
 
                              0           0            0            0            0
                                                                                           100         60          0          0
 
June 2015...........
 
                              0           0            0            0            0
                                                                                           100         37          0          0
 
June 2016...........
 
                              0           0            0            0            0
                                                                                           100         14          0          0
 
June 2017...........
 
                              0           0            0            0            0
                                                                                           100          0          0          0
 
June 2018...........
 
                              0           0            0            0            0
                                                                                            82          0          0          0
 
June 2019...........
 
                              0           0            0            0            0
                                                                                            34          0          0          0
 
June 2020...........
 
                              0           0            0            0            0
                                                                                             0          0          0          0
 
June 2021...........
 
                              0           0            0            0            0
                                                                                             0          0          0          0
 
June 2022...........
 
                              0           0            0            0            0
                                                                                             0          0          0          0
 
Weighted Average
  Life (years)(1)...      12.39        8.92         5.71         4.90         3.90       26.69      22.47      16.92      12.62
 
<CAPTION>
 
                                                                                        CLASS A-8
                                                                                   CERTIFICATES AT THE
                                                                                  FOLLOWING PERCENTAGES
                                                                                          OF SPA
    DISTRIBUTION
        DATE             250%         300%         400%         0%         50%       100%       150%       250%       300%
Initial.............
 
                             100          100          100
                                                                   100        100        100        100        100        100
June 1993...........
 
                             100          100          100
                                                                   100        100        100        100        100        100
June 1994...........
 
                             100          100          100
                                                                   100        100        100        100        100        100
June 1995...........
 
                             100          100          100
                                                                   100        100        100        100        100        100
June 1996...........
 
                             100          100          100
                                                                   100        100        100        100        100        100
June 1997...........
 
                             100          100           50
                                                                   100        100        100        100        100        100
June 1998...........
 
                             100           75            0
                                                                   100        100        100        100        100        100
June 1999...........
 
                              79           30            0
                                                                   100        100        100        100        100        100
June 2000...........
 
                              42            0            0
                                                                   100        100        100        100        100         96
June 2001...........
 
                              12            0            0
                                                                   100        100        100        100        100         73
June 2002...........
 
                               0            0            0
                                                                   100        100        100        100         90         56
June 2003...........
 
                               0            0            0
                                                                   100        100        100        100         72         42
June 2004...........
 
                               0            0            0
                                                                   100        100        100        100         57         30
June 2005...........
 
                               0            0            0
                                                                   100        100        100        100         45         21
June 2006...........
 
                               0            0            0
                                                                   100        100        100        100         34         13
June 2007...........
 
                               0            0            0
                                                                   100        100        100        100         25          7
June 2008...........
 
                               0            0            0
                                                                   100        100        100         88         18          2
June 2009...........
 
                               0            0            0
                                                                   100        100        100         75         12          0
June 2010...........
 
                               0            0            0
                                                                   100        100        100         63          6          0
June 2011...........
 
                               0            0            0
                                                                   100        100        100         52          2          0
June 2012...........
 
                               0            0            0
                                                                   100        100         96         43          0          0
June 2013...........
 
                               0            0            0
                                                                   100        100         82         34          0          0
June 2014...........
 
                               0            0            0
                                                                   100        100         69         26          0          0
June 2015...........
 
                               0            0            0
                                                                   100        100         57         18          0          0
June 2016...........
 
                               0            0            0
                                                                   100        100         45         12          0          0
June 2017...........
 
                               0            0            0
                                                                   100         92         33          6          0          0
June 2018...........
 
                               0            0            0
                                                                   100         70         22          0          0          0
June 2019...........
 
                               0            0            0
                                                                   100         49         12          0          0          0
June 2020...........
 
                               0            0            0
                                                                    83         26          1          0          0          0
June 2021...........
 
                               0            0            0
                                                                    31          3          0          0          0          0
June 2022...........
 
                               0            0            0
                                                                     0          0          0          0          0          0
Weighted Average
  Life (years)(1)...        7.88         6.62         5.08       28.65      26.94      23.71      19.69      13.16      10.93
 
<CAPTION>
 
    DISTRIBUTION
        DATE             400%
Initial.............
 
                             100
June 1993...........
 
                             100
June 1994...........
 
                             100
June 1995...........
 
                             100
June 1996...........
 
                             100
June 1997...........
 
                             100
June 1998...........
 
                              96
June 1999...........
 
                              61
June 2000...........
 
                              38
June 2001...........
 
                              22
June 2002...........
 
                              13
June 2003...........
 
                               5
June 2004...........
 
                               0
June 2005...........
 
                               0
June 2006...........
 
                               0
June 2007...........
 
                               0
June 2008...........
 
                               0
June 2009...........
 
                               0
June 2010...........
 
                               0
June 2011...........
 
                               0
June 2012...........
 
                               0
June 2013...........
 
                               0
June 2014...........
 
                               0
June 2015...........
 
                               0
June 2016...........
 
                               0
June 2017...........
 
                               0
June 2018...........
 
                               0
June 2019...........
 
                               0
June 2020...........
 
                               0
June 2021...........
 
                               0
June 2022...........
 
                               0
Weighted Average
  Life (years)(1)...        7.86
</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-52
<PAGE>
 PERCENTAGE OF INITIAL CLASS A SUBCLASS PRINCIPAL BALANCE AND CLASS M PRINCIPAL
                            BALANCE OUTSTANDING FOR:
<TABLE>
<CAPTION>
                                                       CLASS A-9                                             CLASS A-10
                                                  CERTIFICATES AT THE                                    CERTIFICATES AT THE
                                                 FOLLOWING PERCENTAGES                                  FOLLOWING PERCENTAGES
                                                        OF SPA                                                 OF SPA
<S>                   <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
 
<CAPTION>
    DISTRIBUTION
        DATE             0%         50%       100%       150%       250%       300%       400%        0%         50%       100%
<S>                   <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Initial.............
                            100        100        100        100        100        100        100
                                                                                                         100        100        100
June 1993...........
                            100        100        100        100        100        100        100
                                                                                                          99         98         97
June 1994...........
                            100        100        100        100        100        100        100
                                                                                                          99         96         92
June 1995...........
                            100        100        100        100        100        100        100
                                                                                                          98         92         86
June 1996...........
                            100        100        100        100        100        100        100
                                                                                                          97         88         79
June 1997...........
                            100        100        100        100        100        100        100
                                                                                                          96         84         73
June 1998...........
                            100        100        100        100        100        100        100
                                                                                                          95         81         68
June 1999...........
                            100        100        100        100        100        100        100
                                                                                                          94         77         63
June 2000...........
                            100        100        100        100        100        100        100
                                                                                                          93         74         58
June 2001...........
                            100        100        100        100        100        100        100
                                                                                                          91         70         53
June 2002...........
                            100        100        100        100        100        100        100
                                                                                                          90         67         49
June 2003...........
                            100        100        100        100        100        100        100
                                                                                                          88         64         46
June 2004...........
                            100        100        100        100        100        100         97
                                                                                                          86         61         42
June 2005...........
                            100        100        100        100        100        100         72
                                                                                                          84         57         39
June 2006...........
                            100        100        100        100        100        100         53
                                                                                                          82         54         35
June 2007...........
                            100        100        100        100        100        100         39
                                                                                                          80         51         32
June 2008...........
                            100        100        100        100        100        100         29
                                                                                                          77         48         29
June 2009...........
                            100        100        100        100        100         90         21
                                                                                                          74         45         26
June 2010...........
                            100        100        100        100        100         70         15
                                                                                                          71         42         24
June 2011...........
                            100        100        100        100        100         55         11
                                                                                                          67         38         21
June 2012...........
                            100        100        100        100         90         42          8
                                                                                                          64         35         19
June 2013...........
                            100        100        100        100         71         33          6
                                                                                                          59         32         17
June 2014...........
                            100        100        100        100         56         25          4
                                                                                                          55         28         14
June 2015...........
                            100        100        100        100         43         18          3
                                                                                                          50         25         12
June 2016...........
                            100        100        100        100         33         13          2
                                                                                                          44         22         10
June 2017...........
                            100        100        100        100         24          9          1
                                                                                                          38         18          8
June 2018...........
                            100        100        100        100         17          6          1
                                                                                                          32         15          7
June 2019...........
                            100        100        100         71         11          4          0
                                                                                                          25         11          5
June 2020...........
                            100        100        100         44          6          2          0
                                                                                                          17          7          3
June 2021...........
                            100        100         48         19          3          1          0
                                                                                                           8          3          1
June 2022...........
                              0          0          0          0          0          0          0
                                                                                                           0          0          0
Weighted Average
  Life (years)(1)...      29.74      29.52      29.01      27.85      23.07      20.23      15.16      21.05      15.35      11.64
 
<CAPTION>
                                                                                        CLASS A-R AND CLASS A-LR
                                                                                          CERTIFICATES AT THE
                                                                                         FOLLOWING PERCENTAGES
                                                                                                 OF SPA
<S>                   <C>          <C>        <C>        <C>        <C>        <C>        <C>        <C>
    DISTRIBUTION
        DATE            150%       250%       300%        400%         0%         50%       100%       150%       250%       300%
<S>                   <C>          <C>        <C>        <C>        <C>        <C>        <C>        <C>
Initial.............
 
                            100        100        100         100
                                                                          100        100        100        100        100        100
 
June 1993...........
 
                             97         95         94          92
                                                                           99         98         97         97         95         94
 
June 1994...........
 
                             89         83         81          75
                                                                           99         96         92         89         83         81
 
June 1995...........
 
                             80         69         64          54
                                                                           98         92         86         80         69         64
 
June 1996...........
 
                             71         57         50          39
                                                                           97         88         79         71         57         50
 
June 1997...........
 
                             63         47         39          27
                                                                           96         84         73         63         47         39
 
June 1998...........
 
                             57         38         31          19
                                                                           95         81         68         57         38         31
 
June 1999...........
 
                             50         31         24          13
                                                                           94         77         63         50         31         24
 
June 2000...........
 
                             45         26         19           9
                                                                           93         74         58         45         26         19
 
June 2001...........
 
                             40         21         15           7
                                                                           91         70         53         40         21         15
 
June 2002...........
 
                             36         18         12           5
                                                                           90         67         49         36         18         12
 
June 2003...........
 
                             32         15         10           4
                                                                           88         64         46         32         15         10
 
June 2004...........
 
                             29         12          8           3
                                                                           86         61         42         29         12          8
 
June 2005...........
 
                             25         10          6           2
                                                                           84         57         39         25         10          6
 
June 2006...........
 
                             23          9          5           1
                                                                           82         54         35         23          9          5
 
June 2007...........
 
                             20          7          4           1
                                                                           80         51         32         20          7          4
 
June 2008...........
 
                             18          6          3           1
                                                                           77         48         29         18          6          3
 
June 2009...........
 
                             15          5          2           1
                                                                           74         45         26         15          5          2
 
June 2010...........
 
                             13          4          2           0
                                                                           71         42         24         13          4          2
 
June 2011...........
 
                             12          3          2           0
                                                                           67         38         21         12          3          2
 
June 2012...........
 
                             10          3          1           0
                                                                           64         35         19         10          3          1
 
June 2013...........
 
                              8          2          1           0
                                                                           59         32         17          8          2          1
 
June 2014...........
 
                              7          2          1           0
                                                                           55         28         14          7          2          1
 
June 2015...........
 
                              6          1          1           0
                                                                           50         25         12          6          1          1
 
June 2016...........
 
                              5          1          0           0
                                                                           44         22         10          5          1          0
 
June 2017...........
 
                              4          1          0           0
                                                                           38         18          8          4          1          0
 
June 2018...........
 
                              3          0          0           0
                                                                           32         15          7          3          0          0
 
June 2019...........
 
                              2          0          0           0
                                                                           25         11          5          2          0          0
 
June 2020...........
 
                              1          0          0           0
                                                                           17          7          3          1          0          0
 
June 2021...........
 
                              1          0          0           0
                                                                            8          3          1          1          0          0
 
June 2022...........
 
                              0          0          0           0
                                                                            0          0          0          0          0          0
 
Weighted Average
  Life (years)(1)...       9.14       6.19       5.28        4.06       21.05      15.35      11.64       9.14       6.19       5.28
 
<CAPTION>
                                                                      CLASS M
                                                                CERTIFICATES AT THE
                                                               FOLLOWING PERCENTAGES
                                                                      OF SPA
    DISTRIBUTION
        DATE             400%         0%         50%       100%       150%       250%       300%        400%
Initial.............
 
                             100
                                         100        100        100        100        100        100         100
June 1993...........
 
                              92
                                          99         99         99         99         99         99          99
June 1994...........
 
                              75
                                          99         99         99         99         99         99          99
June 1995...........
 
                              54
                                          98         98         98         98         98         98          98
June 1996...........
 
                              39
                                          97         97         97         97         97         97          97
June 1997...........
 
                              27
                                          96         96         96         96         96         96          96
June 1998...........
 
                              19
                                          95         94         93         92         90         89          88
June 1999...........
 
                              13
                                          94         92         90         88         84         82          78
June 2000...........
 
                               9
                                          93         89         85         82         75         72          65
June 2001...........
 
                               7
                                          91         86         80         75         65         60          51
June 2002...........
 
                               5
                                          90         82         74         67         54         49          38
June 2003...........
 
                               4
                                          88         78         68         60         45         39          29
June 2004...........
 
                               3
                                          86         74         63         53         38         31          21
June 2005...........
 
                               2
                                          84         70         58         47         31         25          16
June 2006...........
 
                               1
                                          82         66         53         42         26         20          12
June 2007...........
 
                               1
                                          80         62         48         37         21         16           9
June 2008...........
 
                               1
                                          77         58         44         33         18         13           6
June 2009...........
 
                               1
                                          74         54         40         29         14         10           5
June 2010...........
 
                               0
                                          71         51         36         25         12          8           3
June 2011...........
 
                               0
                                          67         47         32         22          9          6           2
June 2012...........
 
                               0
                                          64         43         28         19          8          5           2
June 2013...........
 
                               0
                                          59         39         25         16          6          4           1
June 2014...........
 
                               0
                                          55         35         22         13          5          3           1
June 2015...........
 
                               0
                                          50         31         18         11          4          2           1
June 2016...........
 
                               0
                                          44         26         15          9          3          1           0
June 2017...........
 
                               0
                                          38         22         13          7          2          1           0
June 2018...........
 
                               0
                                          32         18         10          5          1          1           0
June 2019...........
 
                               0
                                          25         13          7          4          1          0           0
June 2020...........
 
                               0
                                          17          9          5          2          1          0           0
June 2021...........
 
                               0
                                           8          4          2          1          0          0           0
June 2022...........
 
                               0
                                           0          0          0          0          0          0           0
Weighted Average
  Life (years)(1)...        4.06       21.05      17.82      15.49      13.78      11.53      10.77        9.68
</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-53
<PAGE>
    Interest  on Mortgage  Loans prepaid in  full, Liquidated  Loans and partial
principal prepayments (to the extent not applied on a Due Date) is accrued  only
to  the date of  prepayment or liquidation,  although any corresponding interest
shortfall with respect to  prepayments in full (but  not partial prepayments  or
liquidations)  in the month of  prepayment will be offset,  to the extent of the
aggregate of  the  Servicing  Fees  relating  to  mortgagor  payments  or  other
recoveries distributed on the related Distribution Date. 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 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).
See "Description of the Certificates--Interest" herein and "Prepayment and Yield
Considerations" in the Prospectus.
 
SENSITIVITY OF THE CLASS A-10 CERTIFICATES
 
    THE YIELD TO  INVESTORS ON  THE CLASS  A-10 CERTIFICATES  WILL BE  EXTREMELY
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  last
paragraph  beginning on page S-49  and on the further  assumptions that (i) each
Class A-10 Certificate will be  purchased on June 29,  1992 at a purchase  price
equal  to approximately 85447.738580%  of the initial  principal balance thereof
plus accrued interest thereon from June 1, 1992 to (but not including) June  29,
1992,  (ii) the initial Class  A Subclass Principal Balance  of each Subclass of
Class A Certificates  (other than the  Class A-11 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 . .        50%         100%         150%         250%         300%         385%
                           -----------  -----------  -----------  -----------  -----------  -----------
<S>                        <C>          <C>          <C>          <C>          <C>          <C>
Pre-Tax Yield............      20.90%       18.04%       15.11%        9.00%        5.78%       (0.04)%
</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 approximately
85447.738580% 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 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.
 
                                      S-54
<PAGE>
                        POOLING AND SERVICING AGREEMENT
 
GENERAL
 
    The  Series 1992-18  Certificates will be  issued pursuant to  a Pooling and
Servicing Agreement to be dated as of the date of initial issuance of the Series
1992-18 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 1992-18 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  evidencing  at least  a  $5,000,000 initial
principal balance or any holder of a Class A-10 Certificate, 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.
 
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
1992-18 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 1992-18  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 1992-18  Certificates. The  aggregate  Voting Interests  of the  Class  A
Certificates, other than the Class A-11 Certificates, on any date will be 97% of
the  Class A Percentage on such date. The aggregate Voting Interest of the Class
A-11 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-11 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-11  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.
 
                                      S-55
<PAGE>
TRUSTEE
 
    The Trustee for the Series 1992-18 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 1992-18
Certificates and administrative services provided by it will be 0.25% 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 Lower-Tier  REMIC will be allocated to the
holders of the Class A-R  Certificate and Class A-LR Certificate,  respectively,
who  are individuals,  estates, or  trusts (whether  such Certificates  are 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 1992-18
Certificates, on any Distribution Date when the Pool 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
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 and Class A-11 Certificates,  the Class M Certificates and each
Subclass of Class B Certificates (collectively, the "Regular 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
 
                                      S-56
<PAGE>
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.  It is  anticipated  that the  Class  A-8 and  Class  A-9
Certificates  will be issued with original issue  discount in an amount equal to
the excess of the initial principal balances of such Subclasses (plus four  days
of  accrued 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-4, Class A-5  and Class A-6 Certificates will be issued
at a premium and that  the Class A-7 Certificates  and the Class M  Certificates
will  be issued with DE  MINIMIS original issue discount  for federal income tax
purposes. Although not free  from doubt, it is  anticipated that the Class  A-10
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  price  (including accrued  interest), and  the  Seller intends  to report
income in respect of  such Subclass of Certificates  in this manner. Under  this
method,  any "negative" amounts of original issue discount attributable to rapid
prepayments would not be deductible currently,  but most likely would be  offset
against  future positive accruals  of original issue  discount, if any. Finally,
the holder of a Class  A-10 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 the Class A-10 Certificate, assuming no further prepayments.
 
    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
250%  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 its 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  AND CLASS  A-LR  CERTIFICATEHOLDERS'  REMIC
TAXABLE  INCOME AND THE TAX LIABILITY  THEREON WILL 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 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
 
                                      S-57
<PAGE>
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  and Class A-LR
Certificates will be considered to  be a "noneconomic residual interests,"  with
the  result that  transfers thereof will  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.
 
    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 in the Class A-R or
Class A-LR Certificate may not be recovered until termination of the  respective
REMICs.  Furthermore, the federal  income tax consequences  of any consideration
paid to a transferee on a transfer of a 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.  No  prediction can  be made
regarding whether such  legislation will  be reintroduced  or, if  reintroduced,
whether    it   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
 
                                      S-58
<PAGE>
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 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 October  17, 1989,  the  DOL issued  to  the Underwriters  an  individual
administrative  exemption, Prohibited Transaction Exemption  89-88, 54 Fed. Reg.
42581 (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.
 
                                      S-59
<PAGE>
                                LEGAL INVESTMENT
 
    The  Offered  Certificates  constitute  "mortgage  related  securities"  for
purposes  of  the  Secondary  Mortgage  Market  Enhancement  Act  of  1984  (the
"Enhancement Act") and, as such, 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, as certain Subclasses of the Class A
Certificates or  the  Class  M  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 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 Underwriters intend 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  are  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 May  21, 1992  (the  "Underwriting Agreement")  among  the Seller,  PHMC  and
Goldman,  Sachs  &  Co.,  as  underwriters  (the  "Underwriters"),  the  Offered
Certificates  offered  hereby  are  being  purchased  from  the  Seller  by  the
Underwriters  upon issuance. The  Underwriters are committed  to purchase all of
the  Offered  Certificates  if  any  Offered  Certificates  are  purchased.  The
Underwriters  have advised  the Seller  that they  propose 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 101.515625% 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-11  Certificates at the rate of 8.50% per  annum from June 1, 1992 to (but not
including) June 29, 1992, before deducting  expenses payable by the Seller.  The
Underwriters,  which are not  affiliates of the Seller,  have advised the Seller
that the Underwriters have not allocated  the purchase price paid to the  Seller
among  the Subclasses or  Classes of Offered  Certificates. The Underwriters and
any dealers that participate  with the Underwriters 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  Underwriters against certain civil liabilities  under the Securities Act or
contribute to payments which the Underwriters may be required to make in respect
thereof.
 
                                      S-60
<PAGE>
                                 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 Underwriters 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 1992-18  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 1992-18 Certificates.
 
                                    RATINGS
 
    It is a  condition to the  issuance of  the Class A  Certificates that  each
Subclass  will have been rated "AAA" by S&P  and Fitch. It is a condition to the
issuance of the Class M Certificates that they shall have been rated "AA" by S&P
and 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  S&P  on  mortgage  pass-through  certificates  address the
likelihood of the receipt by  certificateholders of payments required under  the
related  pooling and servicing agreement.  S&P's ratings take into consideration
the credit quality of the mortgage pool, including any credit support providers,
structural and legal aspects associated with the certificates, and the extent to
which the  payment stream  on the  mortgage pool  is adequate  to make  payments
required  under the  certificates. S&P's  ratings on  such certificates  do not,
however, constitute  a  statement  regarding frequency  of  prepayments  on  the
mortgages.
 
    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 and do not address the possibility that the holders of the
Class A-10 Certificates may fail to recoup their initial investments.
 
    The  ratings of  S&P and  Fitch do  not address  the possibility  that, as a
result of principal  prepayments, Certificateholders  may receive  a lower  than
anticipated yield.
 
    The  Seller has not  requested a rating  on the Offered  Certificates of any
Subclass or Class  by any rating  agency other than  S&P 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 S&P and
Fitch.
 
                                      S-61
<PAGE>
                              INDEX OF SIGNIFICANT
                       PROSPECTUS SUPPLEMENT DEFINITIONS
 
<TABLE>
<CAPTION>
TERM                                                                                                         PAGE
- ---------------------------------------------------------------------------------------------------------  ---------
<S>                                                                                                        <C>
Adjusted Pool Amount.....................................................................................    S-23
Bankruptcy Coverage Termination Date.....................................................................    S-34
Bankruptcy Loss..........................................................................................    S-26
Bankruptcy Loss Amount...................................................................................    S-34
Beneficial Owner.........................................................................................    S-18
Book-Entry Certificates..................................................................................     S-6
Book-Entry Nominee.......................................................................................    S-31
Cede.....................................................................................................    S-18
Class A Certificates.....................................................................................    Cover
Class A Distribution Amount..............................................................................    S-21
Class A Optimal Principal Amount.........................................................................    S-25
Class A Percentage.......................................................................................    S-26
Class A Prepayment Percentage............................................................................    S-26
Class A Principal Balance................................................................................    S-22
Class A Principal Distribution Amount....................................................................    S-25
Class A-LR Notional Amount...............................................................................    S-23
Class A Subclass Interest Accrual Amount.................................................................    S-21
Class A Subclass Interest Shortfall Amount...............................................................    S-24
Class A Subclass Principal Balance.......................................................................    S-22
Class A-11 Notional Amount...............................................................................    S-23
Class B Certificates.....................................................................................    Cover
Class B Principal Balance................................................................................    S-23
Class B Subclass Interest Accrual Amount.................................................................    S-22
Class B Subclass Principal Balance.......................................................................    S-22
Class M Certificates.....................................................................................    Cover
Class M Distribution Amount..............................................................................    S-21
Class M Interest Accrual Amount..........................................................................    S-22
Class M Interest Shortfall Amount........................................................................    S-24
Class M Optimal Principal Amount.........................................................................    S-27
Class M Percentage.......................................................................................    S-28
Class M Prepayment Percentage............................................................................    S-28
Class M Principal Balance................................................................................    S-22
Class M Principal Distribution Amount....................................................................    S-27
Code.....................................................................................................    S-17
Cross-Over Date..........................................................................................    S-33
Current Class B-1 Subordination Level....................................................................    S-29
Current Class M Subordination Level......................................................................    S-28
Cut-Off Date Aggregate Principal Balance.................................................................    S-36
Debt Service Reduction...................................................................................    S-26
Definitive Certificates..................................................................................    S-18
Determination Date.......................................................................................    S-20
Distribution Date........................................................................................    S-20
DTC......................................................................................................     S-5
Enhancement Act..........................................................................................    S-60
Excess Bankruptcy Losses.................................................................................    S-35
Excess Fraud Losses......................................................................................    S-34
Excess Special Hazard Losses.............................................................................    S-34
Fitch....................................................................................................     S-4
Fixed Non-Relocation Program Loans.......................................................................    S-43
Fixed Program Loans......................................................................................    S-43
Fraud Coverage Termination Date..........................................................................    S-34
Fraud Loss...............................................................................................    S-26
Fraud Loss Amount........................................................................................    S-34
Indirect Participants....................................................................................    S-18
</TABLE>
 
                                      S-62
<PAGE>
<TABLE>
<CAPTION>
TERM                                                                                                         PAGE
- ---------------------------------------------------------------------------------------------------------  ---------
<S>                                                                                                        <C>
Liquidated Loan..........................................................................................    S-26
Liquidated Loan Loss.....................................................................................    S-26
Lower-Tier REMIC.........................................................................................     S-2
Mortgage Loans...........................................................................................     S-2
Mortgaged Properties.....................................................................................    S-36
Mortgages................................................................................................    S-36
Net Foreclosure Profits..................................................................................    S-30
Net Mortgage Interest Rate...............................................................................    S-23
Non-Supported Interest Shortfall.........................................................................    S-23
Original Class B-1 Subordination Level...................................................................    S-28
Original Class M Subordination Level.....................................................................    S-28
Participants.............................................................................................    S-18
Percentage Interest......................................................................................    S-21
PHMC.....................................................................................................     S-2
Pool Distribution Amount.................................................................................    S-20
Pool Distribution Amount Allocation......................................................................    S-21
Pool Scheduled Principal Balance.........................................................................    S-26
Pooling and Servicing Agreement..........................................................................    S-55
Prepayment Interest Shortfalls...........................................................................    S-23
Program Loans............................................................................................    S-43
Realized Losses..........................................................................................    S-26
Record Date..............................................................................................    S-20
Regular Certificates.....................................................................................    S-57
Relocation Mortgage Loans................................................................................    S-43
REMIC....................................................................................................     S-2
Rules....................................................................................................    S-18
Scheduled Principal Balance..............................................................................    S-26
Seller...................................................................................................     S-2
Series 1992-18 Certificates..............................................................................    Cover
Servicer.................................................................................................     S-2
S&P......................................................................................................     S-4
SPA......................................................................................................    S-49
Special Hazard Loss......................................................................................    S-26
Special Hazard Loss Amount...............................................................................    S-34
Special Hazard Termination Date..........................................................................    S-34
Subclass.................................................................................................    Cover
Subordinated Certificates................................................................................    Cover
Subordinated Percentage..................................................................................    S-27
Subordinated Prepayment Percentage.......................................................................    S-27
Trust Estate.............................................................................................     S-2
Upper-Tier REMIC.........................................................................................     S-2
</TABLE>
 
                                      S-63
<PAGE>
- --------------------------------------------------
                              --------------------------------------------------
- --------------------------------------------------
                              --------------------------------------------------
 
NO  PERSON  HAS  BEEN  AUTHORIZED  TO  GIVE  ANY  INFORMATION  OR  TO  MAKE  ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS SUPPLEMENT OR  THE
PROSPECTUS,  AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT
BE RELIED UPON  AS HAVING BEEN  AUTHORIZED. THIS 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 DESCRIBED  IN  THIS  PROSPECTUS
SUPPLEMENT  OR ANY  OFFER TO SELL  OR THE SOLICITATION  OF AN OFFER  TO BUY SUCH
SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS UNLAWFUL.
NEITHER THE DELIVERY  OF THIS PROSPECTUS  SUPPLEMENT OR THE  PROSPECTUS NOR  ANY
SALE  MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT
INFORMATION HEREIN OR THEREIN IS CORRECT AS  OF ANY TIME SUBSEQUENT TO THE  DATE
OF SUCH INFORMATION.
 
                                ----------------
 
                                     INDEX
 
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                      PAGE
                                                    ---------
<S>                                                 <C>
Table of Contents.................................        S-3
Summary Information...............................        S-4
Description of the Certificates...................       S-18
Description of the Mortgage Loans.................       S-36
Origination, Delinquency and Foreclosure
 Experience.......................................       S-43
Prepayment and Yield Considerations...............       S-47
Pooling and Servicing Agreement...................       S-55
Federal Income Tax Considerations.................       S-56
ERISA Considerations..............................       S-58
Legal Investment..................................       S-60
Secondary Market..................................       S-60
Underwriting......................................       S-60
Legal Matters.....................................       S-61
Use of Proceeds...................................       S-61
Ratings...........................................       S-61
Index of Significant Prospectus Supplement
 Definitions......................................       S-62
</TABLE>
 
                                   PROSPECTUS
 
<TABLE>
<S>                                                 <C>
Reports...........................................          2
Additional Information............................          2
Table of Contents.................................          3
Summary of Prospectus.............................          7
The Trust Estates.................................         12
Description of the Certificates...................         21
Credit Support....................................         33
Prepayment and Yield Considerations...............         38
The Seller........................................         41
PHMC..............................................         41
Use of Proceeds...................................         47
Servicing of the Mortgage Loans...................         48
The Pooling and Servicing Agreement...............         57
Certain Legal Aspects of the Mortgage Loans.......         60
Certain Federal Income Tax Consequences...........         66
ERISA Considerations..............................         90
Legal Investment..................................         93
Plan of Distribution..............................         95
Legal Matters.....................................         96
Rating............................................         96
Index of Significant Definitions..................         97
</TABLE>
 
                                  $427,281,000
                                 (APPROXIMATE)
 
                              THE PRUDENTIAL HOME
                              MORTGAGE SECURITIES
                                 COMPANY, INC.
                                     SELLER
 
                             MORTGAGE PASS-THROUGH
                          CERTIFICATES, SERIES 1992-18
                               ------------------
 
                             PROSPECTUS SUPPLEMENT
                                 --------------
 
                              GOLDMAN, SACHS & CO.
 
- --------------------------------------------------
                              --------------------------------------------------
- --------------------------------------------------
                              --------------------------------------------------
<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................................................................................................           8
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..........................................................................          27
</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..............................................................................................          33
Subordination...............................................................................................          33
    CERTIFICATES OTHER THAN SHIFTING INTEREST CERTIFICATES..................................................          33
    SHIFTING INTEREST CERTIFICATES..........................................................................          36
Other Credit Enhancement....................................................................................          37
    LIMITED GUARANTEE.......................................................................................          38
    LETTER OF CREDIT........................................................................................          38
    POOL INSURANCE POLICIES.................................................................................          38
    SPECIAL HAZARD INSURANCE POLICIES.......................................................................          38
    MORTGAGOR BANKRUPTCY BOND...............................................................................          38
Prepayment and Yield Considerations.........................................................................          38
Pass-Through Rates and Interest Rates.......................................................................          38
Scheduled Delays in Distributions...........................................................................          39
Effect of Principal Prepayments.............................................................................          39
Weighted Average Life of Certificates.......................................................................          40
The Seller..................................................................................................          41
PHMC........................................................................................................          41
General.....................................................................................................          41
Mortgage Loan Production Sources............................................................................          43
Mortgage Loan Underwriting..................................................................................          44
Mortgage Origination Processing.............................................................................          47
Servicing...................................................................................................          47
Use of Proceeds.............................................................................................          47
Servicing of the Mortgage Loans.............................................................................          48
The Servicer................................................................................................          48
Payments on Mortgage Loans..................................................................................          48
Periodic Advances and Limitations Thereon...................................................................          50
Adjustment to Servicing Fee in Connection with Prepaid Mortgage Loans.......................................          51
Reports to Certificateholders...............................................................................          51
Reports to the Trustee......................................................................................          53
Collection and Other Servicing Procedures...................................................................          53
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......................................................................          56
The Pooling and Servicing Agreement.........................................................................          57
Events of Default...........................................................................................          57
Rights Upon Event of Default................................................................................          58
Amendment...................................................................................................          59
Termination; Purchase of Mortgage Loans.....................................................................          59
The Trustee.................................................................................................          60
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                                 PAGE
                                                                                                                 -----
<S>                                                                                                           <C>
Certain Legal Aspects of the Mortgage Loans.................................................................          60
General.....................................................................................................          60
Foreclosure.................................................................................................          61
Foreclosure on Shares of Cooperatives.......................................................................          61
Rights of Redemption........................................................................................          62
Anti-Deficiency Legislation and Other Limitations on Lenders................................................          62
Soldiers' and Sailors' Civil Relief Act and Similar Laws....................................................          64
Environmental Considerations................................................................................          64
"Due-on-Sale" Clause........................................................................................          64
Applicability of Usury Laws.................................................................................          65
Enforceability of Certain Provisions........................................................................          66
Certain Federal Income Tax Consequences.....................................................................          66
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.................................................................................          69
    VARIABLE RATE REGULAR CERTIFICATES......................................................................          71
    MARKET DISCOUNT.........................................................................................          72
    PREMIUM.................................................................................................          73
    SALE OR EXCHANGE OF REGULAR CERTIFICATES................................................................          73
Taxation of Residual Certificates...........................................................................          73
    TAXATION OF REMIC INCOME................................................................................          73
    BASIS AND LOSSES........................................................................................          74
    TREATMENT OF CERTAIN ITEMS OF REMIC INCOME AND EXPENSE..................................................          75
      ORIGINAL ISSUE DISCOUNT...............................................................................          75
      MARKET DISCOUNT.......................................................................................          75
      PREMIUM...............................................................................................          76
      LIMITATIONS OF OFFSET OR EXEMPTION OF REMIC INCOME....................................................          76
    TAX-RELATED RESTRICTIONS ON TRANSFER OF RESIDUAL CERTIFICATES...........................................          77
    DISQUALIFIED ORGANIZATIONS..............................................................................          77
    NONECONOMIC RESIDUAL INTERESTS..........................................................................          78
    FOREIGN INVESTORS.......................................................................................          79
      SALE OR EXCHANGE OF A RESIDUAL CERTIFICATE............................................................          79
    TAXES THAT MAY BE IMPOSED ON THE REMIC POOL.............................................................          79
      PROHIBITED TRANSACTIONS...............................................................................          79
      CONTRIBUTIONS TO THE REMIC POOL AFTER THE STARTUP DAY.................................................          80
      NET INCOME FROM FORECLOSURE PROPERTY..................................................................          80
      LIQUIDATION OF THE REMIC POOL.........................................................................          80
      ADMINISTRATIVE MATTERS................................................................................          80
Limitations on Deduction of Certain Expenses................................................................          81
Taxation of Certain Foreign Investors.......................................................................          81
    REGULAR CERTIFICATES....................................................................................          81
    RESIDUAL CERTIFICATES...................................................................................          81
Backup Withholding..........................................................................................          82
Reporting Requirements......................................................................................          82
</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..............................................................................................          83
    PREMIUM AND DISCOUNT....................................................................................          84
      PREMIUM...............................................................................................          84
      ORIGINAL ISSUE DISCOUNT...............................................................................          84
      MARKET DISCOUNT.......................................................................................          85
      RECHARACTERIZATION OF SERVICING FEES..................................................................          85
    SALE OR EXCHANGE OF STANDARD CERTIFICATES...............................................................          86
Stripped Certificates.......................................................................................          86
    GENERAL.................................................................................................          86
    STATUS OF STRIPPED CERTIFICATES.........................................................................          87
    TAXATION OF STRIPPED CERTIFICATES.......................................................................          87
    ORIGINAL ISSUE DISCOUNT.................................................................................          87
      SALE OR EXCHANGE OF STRIPPED CERTIFICATES.............................................................          88
      PURCHASE OF MORE THAN ONE CLASS OF STRIPPED CERTIFICATES..............................................          89
      POSSIBLE ALTERNATIVE CHARATERIZATIONS.................................................................          89
Reporting Requirements and Backup Withholding...............................................................          89
Taxation of Certain Foreign Investors.......................................................................          89
ERISA Considerations........................................................................................          90
General.....................................................................................................          90
Certain Requirements Under ERISA............................................................................          90
    GENERAL.................................................................................................          90
    PARTIES IN INTEREST/DISQUALIFIED PERSONS................................................................          90
    DELEGATION OF FIDUCIARY DUTY............................................................................          90
Administrative Exemptions...................................................................................          91
    INDIVIDUAL ADMINISTRATIVE EXEMPTIONS....................................................................          91
Exempt Plans................................................................................................          93
Unrelated Business Taxable Income--Residual Certificates....................................................          93
Legal Investment............................................................................................          93
Plan of Distribution........................................................................................          95
Legal Matters...............................................................................................          96
Rating......................................................................................................          96
Index of Significant Definitions............................................................................          97
</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  differ-
                                    ential  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             Shifting  Interest Certificates of a Series are Standard
  Certificates....................  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--Distributions 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.
 
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").
</TABLE>
 
                                       8
<PAGE>
 
<TABLE>
<S>                                 <C>
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                With respect  to a  Series of  Standard Certificates  or
  Prepayments)....................  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       With respect to  a Series  of Multi-Class  Certificates,
  Stated Amount...................  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 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
</TABLE>
 
                                       9
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    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."
 
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
</TABLE>
 
                                       10
<PAGE>
 
<TABLE>
<S>                                 <C>
                                    the  Mortgage Loans. Any such  Periodic Advances will be
                                    reimbursable to the Servicer as described herein and  in
                                    the  applicable Prospectus Supplement. See "Servicing of
                                    the Mortgage  Loans--Periodic Advances  and  Limitations
                                    Thereon."
 
Optional Purchase of Mortgage       The  Seller may, at its option, repurchase any defaulted
  Loans...........................  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 Loans will  be underwritten by different insurers and
will cover Mortgaged Properties located in various
 
                                       15
<PAGE>
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
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.
 
                                       16
<PAGE>
    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 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
 
                                       17
<PAGE>
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
    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
 
                                       18
<PAGE>
    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 Servicing Agreement. The summaries do not purport to be
complete and are subject to, and are qualified in
 
                                       21
<PAGE>
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.
 
    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).
 
                                       22
<PAGE>
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  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
 
                                       23
<PAGE>
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
 
        (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
 
                                       24
<PAGE>
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
 
        (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
 
                                       25
<PAGE>
    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.
 
        (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.
 
                                       26
<PAGE>
    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 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
 
                                       27
<PAGE>
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 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
 
                                       28
<PAGE>
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 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.
 
                                       29
<PAGE>
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, 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
 
                                         (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 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
 
- --------------------------------------------------------------------------------
(FOOTNOTES CONTINUED FROM PRECEDING PAGE)
    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>
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 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.
 
                                       32
<PAGE>
  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.
 
                                 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
 
                                       33
<PAGE>
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.
 
    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.
 
                                       34
<PAGE>
    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 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.
 
                                       35
<PAGE>
    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  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
 
                                       36
<PAGE>
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  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.
 
                                       37
<PAGE>
  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.
 
                      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.
 
                                       38
<PAGE>
    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
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.
 
                                       39
<PAGE>
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 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.
 
                                       40
<PAGE>
    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.
 
    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
 
                                       41
<PAGE>
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 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
 
                                       42
<PAGE>
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 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
 
                                       43
<PAGE>
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, 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
 
                                       44
<PAGE>
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  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
 
                                       45
<PAGE>
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 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
 
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<PAGE>
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.
 
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,
 
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<PAGE>
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 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
 
                                       48
<PAGE>
    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 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;
 
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<PAGE>
        (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  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
 
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<PAGE>
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.
 
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;
 
                                       51
<PAGE>
        (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
 
           (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
 
                                       52
<PAGE>
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).
 
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.)
 
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<PAGE>
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 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
 
                                       54
<PAGE>
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)  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
 
                                       55
<PAGE>
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).
 
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
 
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<PAGE>
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  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
 
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<PAGE>
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 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).
 
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<PAGE>
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  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
 
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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.
 
                  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.
 
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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.
 
    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
 
                                       61
<PAGE>
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.
 
    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
 
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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.
 
    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
 
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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. 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
 
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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 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.
 
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    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  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.
 
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<PAGE>
             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 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
 
                                       67
<PAGE>
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 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
 
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<PAGE>
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  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
 
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<PAGE>
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  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
 
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<PAGE>
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 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
 
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<PAGE>
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 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.
 
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<PAGE>
    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  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
 
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<PAGE>
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 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
 
                                       74
<PAGE>
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.
 
    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.
 
                                       75
<PAGE>
    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 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,
 
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<PAGE>
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  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
 
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<PAGE>
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  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
 
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<PAGE>
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" 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
 
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<PAGE>
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.
 
    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.
 
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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  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
 
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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.
 
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,
 
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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 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
 
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<PAGE>
    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).
 
    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
 
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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 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.
 
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<PAGE>
    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 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.
 
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    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.
 
    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
 
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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 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
 
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<PAGE>
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 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.
 
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<PAGE>
    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.
 
    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."
 
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<PAGE>
    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  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.
 
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<PAGE>
    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.
 
    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
 
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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 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
 
                                       93
<PAGE>
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 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.
 
                                       94
<PAGE>
    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.
 
    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
 
                                       95
<PAGE>
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.
 
                                 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.
 
                                       96
<PAGE>
                        INDEX OF SIGNIFICANT DEFINITIONS
 
<TABLE>
<CAPTION>
TERM                                                                                                            PAGE
- -----------------------------------------------------------------------------------------------------------     -----
<S>                                                                                                          <C>
Aggregate Losses...........................................................................................          33
Assumed Reinvestment Rate..................................................................................          32
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.................................................................................................          31
Eligible Investments.......................................................................................          35
ERISA......................................................................................................          11
FDIC.......................................................................................................          48
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.......................................................................................          33
Pass-Through Rate..........................................................................................           9
Percentage Certificates....................................................................................          22
Periodic Advances..........................................................................................          10
PHMC.......................................................................................................           1
PMCC.......................................................................................................          42
Pool Distribution Amount...................................................................................          26
Pool Scheduled Principal Balance...........................................................................          28
Pool Value.................................................................................................          32
</TABLE>
 
                                       97
<PAGE>
<TABLE>
<CAPTION>
TERM                                                                                                            PAGE
- -----------------------------------------------------------------------------------------------------------     -----
Pool Value Group...........................................................................................          32
<S>                                                                                                          <C>
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...............................................................................          36
Special Hazard Termination Date............................................................................          36
Specified Subordination Reserve Fund Balance...............................................................          34
Spread.....................................................................................................          31
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...........................................................................................          57
</TABLE>
 
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