CAPSTEAD SECURITIES CORPORATION IV
8-K, 1998-10-09
ASSET-BACKED SECURITIES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K


                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                       Date of Report: September 29, 1998
                        (Date of earliest event reported)


                       CAPSTEAD SECURITIES CORPORATION IV
             (Exact name of Registrant as specified in its charter)


              Delaware                   3-47913                 75-2390594
      (State of Incorporation)    (Commission File No.)       (I.R.S. Employer
                                                             Identification No.)
       2711 N. Haskell Avenue
            Suite 1000
           Dallas, Texas                                           75204
(Address of Principal executive offices)                         (Zip Code)


       Registrant's Telephone Number, Including Area Code: (214) 874-2500







<PAGE>   2



Item 5.  Other Events.



         Reference is hereby made to the Registrant's Registration Statement on
Form S-3 (File No. 33-42337) filed with the Securities and Exchange Commission
(the "Commission") on August 21, 1991, as amended by Amendment No. 1 thereto
filed with the Commission on October 10, 1991, (collectively, the "Registration
Statement"), pursuant to which the Registrant registered $5,000,000,000
aggregate principal amount of its collateralized mortgage obligations, issuable
in series, for sale in accordance with the provisions of the Securities Act of
1933, as amended (the "Act"). Reference is also hereby made to the Prospectus
dated September 28, 1998 and the related Prospectus Supplement, dated September
28, 1998 (collectively, the "Prospectus"), which are to be filed with the
Commission pursuant to Rule 424(b)(5), with respect to the Registrant's
Collateralized Mortgage Obligations, Series 1998-3 (the "Bonds").

         On September 29, 1998, the Registrant caused the issuance and sale of
approximately $345,831,963 aggregate initial principal amount of Bonds. The
Bonds are collateralized by mortgage pass-through certificates (the
"Certificates") evidencing the beneficial ownership interest in entire pools of
certain first lien, fixed-rate or adjustable rate mortgage loans secured by one-
to four-family residential properties (the "Mortgage Loans"). The Certificates
were created pursuant to certain Pooling and Servicing Agreements described in
the Prospectus. The Bonds were issued pursuant to an Indenture dated as of
September 1, 1998 (the "Indenture"), between the Registrant and Chase Bank of
Texas, National Association, as Indenture Trustee (the "Indenture Trustee"), as
supplemented by the Series 1998-3 Supplement thereto dated as of September 1,
1998 (the "Series Supplement"), between the Registrant and the Indenture
Trustee. A copy of the Indenture is filed as Exhibit 4.1 to this Form 8-K, and a
copy of the Series Supplement is filed herewith as Exhibit 4.2.

         The Class A Bonds (as defined in the Prospectus), having an aggregate
principal balance of $345,831,863 have been sold by the Registrant to Greenwich
Capital Markets, Inc. ("Greenwich") pursuant to an Underwriting Agreement dated
as of September 28, 1998 (the "Underwriting Agreement"), as supplemented by a
Terms Agreement dated as of September 28, 1998, each among Greenwich, the
Registrant and Capstead Mortgage Corporation ("CMC"). A copy of the Underwriting
Agreement is filed as Exhibit 1 to the this Form 8-K.









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Item 7.  Financial Statements and Exhibits.

(c)      Exhibits

         Exhibit No.       Description

         *1.1     Underwriting Agreement dated as of September 28, 1998 between
                  Greenwich Capital Markets, Inc., the Registrant and Capstead
                  Mortgage Corporation

         *4.1     Indenture dated as of September 1, 1998 between the Registrant
                  and Chase Bank of Texas, National Association, as Indenture
                  Trustee

         *4.2     Series 1998-3 Supplement dated as of September 1, 1998 between
                  the Registrant and Chase Bank of Texas, National Association,
                  as Indenture Trustee


- --------------

* Filed herewith.






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<PAGE>   4





                                    Signature

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this Report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                      CAPSTEAD SECURITIES CORPORATION IV



October 8, 1998                      By: /s/  WADE WALKER
                                         --------------------------------------
                                         Wade Walker,
                                         Vice President






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<PAGE>   5


                                INDEX TO EXHIBITS


Exhibit No.

         *1.1     Underwriting Agreement dated as of September 28, 1998 between
                  Greenwich Capital Markets, Inc., the Registrant and Capstead
                  Mortgage Corporation

         *4.1     Indenture dated as of September 1, 1998 between the Registrant
                  and Chase Bank of Texas, National Association, as Indenture
                  Trustee

         *4.2     Series 1998-3 Supplement dated as of September 1, 1998 between
                  the Registrant and Chase Bank of Texas, National Association,
                  as Indenture Trustee

* Filed herewith.





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                                                                     EXHIBIT 1.1

                                                                       EXECUTION

                       CAPSTEAD SECURITIES CORPORATION IV

                       COLLATERALIZED MORTGAGE OBLIGATIONS
                              (Issuable in Series)
                             UNDERWRITING AGREEMENT


                                                              September 28, 1998


Greenwich Capital Markets, Inc.
600 Steamboat Road
Greenwich, Connecticut 06830

Ladies and Gentlemen:

         Capstead Securities Corporation IV (the "Company"), a Delaware
corporation and wholly-owned subsidiary of Capstead Mortgage Corporation, a
Maryland corporation ("Capstead"), proposes to issue its Collateralized Mortgage
Obligations of the series (each, a "Series") and classes designated at the time
of sale (the "Bonds"). The Bonds shall be issued under an indenture, dated as of
September 1, 1998 (the "Original Indenture"), between the Company and Chase Bank
of Texas, National Association, as trustee (the "Indenture Trustee"), as
supplemented from time to time by one or more supplemental indentures, each
providing for the issuance of a Series of Bonds (the "Series Supplements")
between the Company and the Indenture Trustee. Such Original Indenture, as
supplemented from time to time hereafter, and as supplemented by the Series
Supplements, with any changes therein made with your consent, and, with your
consent any other indenture is herein referred to as the "Indenture." Capstead
joins this agreement for the purposes set forth herein.

         Underwritten Offerings of Bonds may be made through you or through an
underwriting syndicate managed by you. The Company proposes to sell one or more
Series of the Bonds or certain Classes of Bonds of one or more Series to you and
to each of the other several underwriters, if any, participating in an
underwriting syndicate managed by you. It is understood, however, that the
Company may elect to retain, through the execution of one or more underwriting
agreements in addition to this Agreement, one or more additional underwriters
other than you to underwrite, or manage the underwriting syndicate with respect
to, any offering of one or more Series of its Bonds.

         Whenever the Company determines to make such an offering of Bonds
through you, it will enter into an agreement (the "Terms Agreement") providing
for the sale of such Bonds to, and the purchase and offering thereof by, you and
such other underwriters, if any, selected by you as have authorized you to enter
into such Terms Agreement on their behalf (the underwriters designated in any
such Terms Agreement being referred to herein as "Underwriters," which term
shall include you whether acting alone in the sale of any Series of Bonds or as
a member of the underwriting syndicate). The Terms Agreement relating to each
offering of Bonds shall specify the principal amount of Bonds to be issued and
their terms not otherwise specified in the Indenture, a brief description of the
Conventional Certificates (as defined below) to be pledged as security therefor,
the names of the Underwriters participating in such offering (subject to


<PAGE>   2


substitution as provided in Section 11 hereof) and the principal amount of the
Bonds which each severally agrees to purchase, the names of such other
Underwriters, if any, acting as co-managers with you in connection with such
offering, the price at which the Bonds are to be purchased by the Underwriters
from the Company, the initial public offering price (or the manner in which such
prices shall be determined), the time and place of delivery of and payment for
the Bonds, and such other information as may be agreed upon. The Terms
Agreement, which shall be substantially in the form of Exhibit A hereto, may
take the form of an exchange of any standard form of written telecommunication
between you and the Company. Each offering of Bonds through you will be governed
by this Agreement, as supplemented by the applicable Terms Agreement, and this
Agreement and such Terms Agreement shall inure to the benefit of and be binding
upon each Underwriter participating in the offering of such Bonds.

         At their date of issuance, the Bonds of each Series underwritten by you
will be secured by a pledge to the Indenture Trustee of, among other things,
Conventional Certificates (as defined in the Indenture) (collectively, the
"Conventional Certificates"). The Bonds are more fully described in the
Registration Statement (as defined below). Capitalized terms used but not
defined herein shall have the meanings given to them in the Indenture.

         The Company has filed with the Securities and Exchange Commission (the
"Commission") a registration statement on Form S-3 (No. 33-42337), a related
preliminary prospectus and related preliminary prospectus supplements for the
registration of the Bonds under the Securities Act of 1933 (the "1933 Act"),
which registration statement, as most recently amended, was declared effective
on October 1, 1991. Such registration statement, as from time to time amended
through the date of the Terms Agreement, including all exhibits thereto and all
documents therein incorporated by reference from time to time pursuant to Item
12 of Form S-3 under the 1933 Act that were filed under the Securities Exchange
Act of 1934 (the "1934 Act"), on or before the effective date of such
registration statement, but excluding the Statement of Eligibility and
Qualification (Form T-1) under the Trust Indenture Act of 1939 (the "1939 Act"),
is hereinafter referred to as the "Registration Statement." The prospectus in
the form in which it appears in the Registration Statement, including all
documents therein incorporated by reference from time to time pursuant to the
1934 Act, is hereinafter referred to as the "Basic Prospectus". The Basic
Prospectus, as amended to the date hereof and as supplemented by the prospectus
supplement or supplements relating to a particular Series of the Bonds, each in
the form first filed after the date of the related Terms Agreement with the
Commission pursuant to Rule 424 under the 1933 Act, including any documents
incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933
Act that were filed under the 1934 Act on or before the date of such prospectus
supplement (such prospectus supplement, including such incorporated documents,
in the form first filed after the date of the related Terms Agreement pursuant
to Rule 424(b) being hereinafter termed the "Prospectus Supplement"), is
hereinafter referred to as the "Final Prospectus". Any reference herein to the
terms "amend", "amendment" or "supplement" with respect to the Registration
Statement, the Final Prospectus or the Prospectus Supplement shall be deemed to
refer to and include the filing of any document under the 1934 Act after the
effective date of the Registration Statement or the issue date of the Final
Prospectus or Prospectus Supplement, as the case may be, deemed to be
incorporated therein by reference pursuant to Item 12 of Form S-3 under the 1933
Act.



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     SECTION 1. Representations and Warranties. The Company and Capstead,
jointly and severally, represent and warrant to you as of the date hereof, and
to each Underwriter named in a Terms Agreement as of the date thereof (in each
case the "Representation Date"), as follows:

          (a) The Registration Statement, at the time it became effective,
     complied and, as of the date hereof, does comply, in all material respects
     with the requirements of the 1933 Act and the rules and regulations of the
     Commission thereunder (the "1933 Act Regulations") and will not contain an
     untrue statement of a material fact or omit to state a material fact
     required to be stated therein or necessary to make the statements therein
     not misleading, and the Final Prospectus at the time it is mailed to the
     Commission for filing pursuant to Rule 424 under the Act and at the Closing
     Time referred to in Section 2 will not contain an untrue statement of a
     material fact or omit to state a material fact necessary in order to make
     the statements therein, in the light of the circumstances under which they
     were made, not misleading; provided, however, that the representations and
     warranties in this subsection shall not apply to statements in or omissions
     from (i) the Registration Statement or Final Prospectus made in reliance
     upon and in conformity with information furnished to the Company in writing
     by any Underwriter through you expressly for use in the Registration
     Statement or Final Prospectus or (ii) the Current Report (as defined in
     Section 3(b) below), or in any amendment thereof or supplement thereto,
     incorporated by reference in such Registration Statement or such Final
     Prospectus (or any amendment thereof or supplement thereto). There are no
     material contracts or documents of the Company which are required to be
     filed as exhibits to the Registration Statement by the 1933 Act or the 1933
     Act Regulations which have not been so filed.

          (b) At the time the Registration Statement became effective the
     Indenture Trustee was duly qualified under the requirements of the 1939 Act
     and the rules and regulations of the Commission thereunder (the "1939 Act
     Regulations"), and at the Closing Time the Indenture will be so qualified
     and will conform in all material respects with the requirements of the 1939
     Act and the 1939 Act Regulations. 

          (c) The documents incorporated by reference in the Registration
     Statement and the applicable Final Prospectus, at the time they were or
     hereafter are filed with the Commission, complied and will comply in all
     material respects with the requirements of the 1934 Act and the rules and
     regulations of the Commission thereunder, and, when read together and with
     the other information in the applicable Final Prospectus, at the time the
     Registration Statement and any amendments thereof became effective, and at
     the time such Final Prospectus is filed with the Commission, did not and
     will not contain an untrue statement of a material fact or omit to state a
     material fact required to be stated therein or necessary to make the
     statements therein, in the light of the circumstances under which they were
     made, not misleading; provided, however, that the representations and
     warranties in this subsection shall not apply to the Current Report.

          (d) The accountants who reported on the balance sheet included or
     incorporated by reference in the Registration Statement are independent
     public accountants as required by the 1933 Act and the 1933 Act
     Regulations.



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<PAGE>   4


          (e) The balance sheet of the Company included or incorporated by
     reference in the Registration Statement presents fairly the financial
     position of the Company at the date indicated, and has been prepared in
     conformity with generally accepted accounting principles. 

          (f) Since the respective dates as of which information is given in the
     Registration Statement or, if later, the applicable Final Prospectus,
     except as otherwise stated therein, there has been no material adverse
     change in the condition, financial or otherwise, earnings, business
     affairs, or business prospects of the Company.

          (g) The Company has been duly incorporated and is validly existing as
     a corporation in good standing under the laws of the State of Delaware with
     power and authority (corporate and other) to own, lease and operate its
     properties and conduct its business as described in the Registration
     Statement, and, at the Closing Time, the Company will be duly qualified as
     a foreign corporation to transact business and will be in good standing in
     the State of Texas. The Company is not required to qualify to do business
     as a foreign corporation under the laws of any other state. The Company has
     no subsidiaries.

          (h) The authorized, issued and outstanding capital stock of the
     Company is as set forth (or incorporated) in the Registration Statement,
     and the shares of issued and outstanding capital stock of the Company have
     been duly authorized and validly issued and are fully paid and
     non-assessable, and are owned of record and beneficially by Capstead, free
     and clear of any lien, charge, option, warrant, security interest,
     encumbrance, voting trust or similar arrangement.

          (i) Neither the Company nor Capstead is in violation of its charter or
     bylaws. The Company is not in default in the performance or observance of
     any obligation, agreement, covenant or condition contained in any contract,
     indenture, mortgage, loan agreement, note, lease or other instrument to
     which it is a party or by which it or its properties may be bound, which
     violations or defaults separately or in the aggregate would have a material
     adverse effect on the Company.

          (j) The Company owns or possesses or has obtained all material
     governmental licenses, permits, consents, orders, approvals and other
     authorizations necessary to lease, own or license, as the case may be, and
     to operate, its properties and to carry on its business as described in the
     Registration Statement or, if later, the applicable Final Prospectus; and
     the Company has conducted and is conducting its business so as to comply in
     all material respects with all applicable laws, administrative regulations
     and administrative and court decrees.

          (k) There is no action, suit or proceeding before or by any court or
     governmental agency or body, domestic or foreign, now pending against the
     Company or, to the knowledge of the Company and Capstead, threatened
     against the Company (except as set forth in the Registration Statement or,
     if later, the applicable Final Prospectus) which could reasonably be
     expected to result in any material adverse change in the condition,
     financial or otherwise, earnings, business affairs, or business prospects
     of the 


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<PAGE>   5


     Company which could reasonably be expected to interfere with or materially
     and adversely affect the consummation of the transactions contemplated
     herein.

          (l) The execution and delivery of this Agreement, the Original
     Indenture, the related Series Supplement, the pass-through certificate
     purchase agreement between the Company and Capstead (the "Pass-Through
     Certificate Purchase Agreement"), the incurrence of the obligations herein
     set forth and the consummation of the transactions contemplated herein and
     therein have been, and the execution and delivery of each Terms Agreement
     and the consummation of the transactions contemplated therein will have
     been (before the issuance of the related Bonds), duly authorized by the
     Company and/or Capstead, as applicable, by all necessary action (corporate
     and other); this Agreement, the Original Indenture, the related Series
     Supplement, the Pass-Through Certificate Purchase Agreement and the Terms
     Agreement, when executed and delivered, will have been, duly executed and
     delivered by the Company and/or Capstead, as applicable, enforceable in
     accordance with their terms, subject, as to enforceability of remedies, to
     applicable bankruptcy, insolvency, reorganization, or other laws affecting
     creditors' rights generally, and to general principles of equity and
     equitable remedies (regardless of whether the enforceability of such
     remedies is considered in a proceeding in equity or at law). Neither the
     execution and delivery of this Agreement, the Original Indenture, the
     related Series Supplement, the Pass-Through Certificate Purchase Agreement
     or the Terms Agreement, the incurrence of the obligations herein or therein
     set forth, nor the consummation of the transactions contemplated herein or
     therein will conflict with or constitute a breach of, or default under, or
     result in the creation or imposition of any lien, mortgage, pledge, charge,
     security interest or encumbrance (collectively, "Lien") upon any property
     or assets of the Company or Capstead, as applicable, pursuant to any
     contract, indenture, mortgage, loan agreement, note, lease or other
     instrument to which the Company or Capstead, as applicable, is a party or
     by which any of them may be bound, or to which any of the property or
     assets of any of them is subject (other than the Lien created pursuant to
     the Indenture), which separately or in the aggregate are material, nor will
     any such action result in any violation of the provisions of the charter or
     bylaws of either of the Company or Capstead, or, to the best of such
     entity's knowledge, of any law, administrative regulation or administrative
     or court decree.

          (m) The issuance of the Bonds underwritten by you has been duly
     authorized by the Company (or will have been so authorized prior to each
     issuance of Bonds underwritten by you) and, when such Bonds are executed
     and authenticated and delivered in accordance with the Indenture and sold
     to the Underwriters pursuant to this Agreement and any Terms Agreement,
     such Bonds will be entitled to the benefits and security provided by the
     Indenture and will constitute the legal, valid and binding non-recourse
     obligations of the Company enforceable in accordance with their terms, but
     otherwise subject, as to enforceability of remedies, to applicable
     bankruptcy, insolvency, reorganization or other laws affecting creditors'
     rights generally, and to general principles of equity and equitable
     remedies (regardless of whether the enforceability of such remedies is
     considered in a proceeding in equity or at law).

          (n) The Bonds of each Series underwritten by you and the Indenture
     will conform in all material respects to the respective descriptions
     thereof contained in the applicable Final Prospectus, except that no
     representation or warranty is made that the Bonds conform with any
     description thereof contained in the Current Report.


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<PAGE>   6


          (o) At the Closing Time with respect to a Series of Bonds, the Company
     will own (i) the Conventional Certificates listed in Schedule A to the
     Series Supplement relating to the applicable Series of Bonds and (ii) the
     money or other assets specified or referred to in the granting clauses of
     such Series Supplement as being pledged to the Indenture Trustee at Closing
     Time (together, the "Initial Collateral"), free and clear of any Lien,
     except the Lien of the Indenture; the Company has power and authority
     (corporate and other) to assign, pledge and deliver the Initial Collateral
     to the Indenture Trustee under the Indenture, and will have duly authorized
     such assignment, pledge and delivery to the Indenture Trustee by all
     necessary corporate action.

          (p) As of the Closing Time with respect to a Series of Bonds, the
     Company will have assigned, pledged and delivered to the Indenture Trustee
     under the Indenture all of its right, title and interest in and to, among
     other things, (i) Conventional Certificates with an aggregate outstanding
     principal balance as of such Closing Time at least equal to the aggregate
     original principal amount of the Bonds of the applicable Series then being
     issued and (ii) cash and/or other assets, if any, in the amount set forth
     in the related Series Supplement.

          (q) At the Closing Time with respect to a Series of Bonds, each
     Conventional Certificate listed on Schedule A to the Series Supplement
     relating to the applicable Series of Bonds will have been duly and validly
     assigned, pledged and delivered to the Indenture Trustee, or its nominee,
     and together with such assignment, pledge and delivery of each Conventional
     Certificate, the filing of a UCC-1 financing statement with respect to the
     Conventional Certificates in the office of the Secretary of State of the
     State of Texas and in such other jurisdictions, if any, as the Company
     deems appropriate and the possession by the Indenture Trustee, or its
     nominee, of the Conventional Certificates and of the monies and/or other
     assets, if any, specified in the related Series Supplement, will create as
     security for repayment of the Bonds a valid, perfected first security
     interest. The information set forth with respect to the Conventional
     Certificates in Schedule A to the related Series Supplement will as of the
     Closing Time of such Series be true and correct in all material respects.
    

          (r) The Company is not, and will not as a result of the offer and sale
     of the Bonds as contemplated in this Agreement and any applicable Terms
     Agreement become, an "investment company" as such term is defined in the
     Investment Company Act of 1940, as amended (the "Investment Company Act")
     which would be required to register under the Investment Company Act.

          (s) The representations and warranties made by the Company in the
     Indenture and the Pass-Through Certificate Purchase Agreement and made in
     any Officers' Certificate of the Company delivered pursuant to the Original
     Indenture or the Pass-Through Certificate Purchase Agreement will be true
     and correct at the time made and at the Closing Time.



                                      -6-
<PAGE>   7


          (t) The Pass-Through Certificate Purchase Agreement, the Conventional
     Certificates and the mortgage loans evidenced thereby shall conform in all
     material respects to the respective descriptions thereof contained in the
     applicable Final Prospectus, except that no representation is made that the
     Conventional Certificates conform with the descriptions thereof (if any)
     contained in the Current Report.

          (u) Any certificate signed by an officer of the Company or Capstead
     and delivered to you or to counsel for the Underwriters shall be deemed a
     representation and warranty by the Company or Capstead, respectively, to
     each Underwriter as to the matters covered thereby.

          (v) No consent, approval, authorization, order, registration or
     qualification of or with any court or governmental agency or body of the
     United States is required for the issue and sale of the Bonds, or the
     consummation by the Company of the other transactions contemplated by this
     Agreement, each Terms Agreement or the Indenture, except such consents,
     approvals, authorizations, registrations or qualifications as may be
     required under state securities or Blue Sky laws in connection with the
     purchase and distribution of the Bonds by the Underwriters or as have been
     obtained.

          (w) At the Closing Time of a Series, the Bonds of such Series shall
     have been rated in the highest rating category by at least two nationally
     recognized statistical rating organizations or in such lower rating
     categories as are acceptable to the Underwriters.

          (x) Any taxes, fees and other governmental charges in connection with
     the execution, delivery and issuance of this Agreement, the related Terms
     Agreement, the Indenture and the Bonds have been paid or will be paid at or
     prior to the Closing Time.

          (y) All of the information regarding the characteristics of the
     Mortgage Loans contained in the Registration Statement or furnished to you
     by the Company in writing or by electronic transmission is true and
     correct.

     SECTION 2. Sale and Delivery to the Underwriters; Closing. The several
commitments of the Underwriters to purchase Bonds pursuant to any Terms
Agreement shall be deemed to have been made on the basis of the representations
and warranties herein contained and subject to the terms and conditions herein
set forth, the Company agrees to sell to each Underwriter, severally and not
jointly, and each Underwriter, severally and not jointly, agrees to purchase
from the Company, the respective original principal amounts of the Bonds set
forth in the applicable Terms Agreement opposite the name of such Underwriter,
plus any additional original principal amount of Bonds which such Underwriter
may be obligated to purchase pursuant to Section 11 hereof.

         Delivery of, and payment of the purchase price for, the Bonds shall be
made at the office of Andrews & Kurth L.L.P., 1717 Main Street, Suite 3700,
Dallas, Texas 75201, or at such other place as shall be agreed upon by you and
the Company, at 10:00 A.M. (Dallas time) on the date set forth in the applicable
Terms Agreement, or such other time as shall be agreed upon by you and the
Company (such time and date being referred to as the "Closing Time"). Payment
shall be made in immediately available or next day funds as specified in the
Terms Agreement,



                                      -7-
<PAGE>   8


payable to or upon the order of the Company, against delivery to you for the
respective accounts of the Underwriters of the Bonds to be purchased by them.
Such Bonds shall be in such denominations and registered in such names as you
may request in writing at least two business days prior to the Closing Time. The
Bonds will be made available for your examination in Dallas, Texas not later
than 10:00 A.M. on the Business Day prior to the Closing Time.

     SECTION 3. Covenants of the Company. The Company covenants with you, and
with each Underwriter participating in the offering of the applicable Series of
Bonds, as follows:

          (a) Immediately following the execution of each Terms Agreement, the
     Company will prepare a Final Prospectus setting forth the principal amount
     of Bonds covered thereby and their terms not otherwise specified in the
     Indenture, the names of the Underwriters participating in the offering and
     the principal amount of Bonds which each severally has agreed to purchase,
     the names of any Underwriters acting as co-managers with you in connection
     with the offering, the price at which the Bonds are to be purchased by the
     Underwriters from the Company, and such other information as you and the
     Company deem appropriate in connection with the offering of the Bonds. The
     Company will promptly transmit copies of the Final Prospectus to the
     Commission for filing pursuant to Rule 424 of the 1933 Act Regulations and
     will furnish to the Underwriters named therein as many copies of the Final
     Prospectus as you shall reasonably request.

          (b) The Company will cause any materials provided by you pursuant to
     Section 8 below ("Section 8 Materials") with respect to the Bonds that are
     delivered by you to the Company pursuant to Section 8 hereof to be filed
     with the Commission on a Current Report on Form 8-K (the "Current Report")
     pursuant to Rule 13a-11 under the 1934 Act not later than the Business Day
     immediately following the Business Day on which all such Section 8
     Materials are delivered to counsel for the Company by you prior to 3:00
     p.m. Dallas, Texas time, and will promptly advise you when such Current
     Report has been filed, provided that in any event the Company will cause
     the Section 8 Materials to be so filed not later than the date on which the
     related Final Prospectus is required to be so filed pursuant to Rule 424
     under the 1933 Act. Such Current Report shall be incorporated by reference
     in such Final Prospectus and the related Registration Statement.
     Notwithstanding the two preceding sentences, the Company shall have no
     obligation to file any Section 8 Materials which, in the reasonable
     determination of the Company (a "Non-Filing Determination"), are not
     required to be filed pursuant to the Kidder Letter or the PSA Letter (as
     defined in Section 8 below), or which contain erroneous information or
     contain any untrue statement of a material fact or, when read in
     conjunction with the Final Prospectus and Prospectus Supplement, omit to
     state a material fact required to be stated therein or necessary to make
     the statements therein not misleading (it being understood, however, that
     the Company shall have no obligation to review or pass upon the accuracy or
     adequacy of, or to correct, any Section 8 Materials); provided that, in the
     event of a Non-Filing Determination, the Company shall immediately notify
     you in writing of the reasons for such Non-Filing Determination; and,
     provided, further, that the Company shall file those Section 8 Materials
     for which you have specifically confirmed in writing that the items giving
     rise to the Non-Filing



                                      -8-
<PAGE>   9


     Determination are complete and correct and that you are advising the
     Company to file such Section 8 Materials.

          (c) The Company will notify you immediately, and in writing confirm
     the notice, (i) of the receipt of any comments from the Commission, (ii) of
     any request by the Commission for any amendment to the Registration
     Statement or any amendment or supplement to the Final Prospectus or for
     additional information, (iii) of the issuance by the Commission of any stop
     order suspending the effectiveness of the Registration Statement or the
     initiation of any proceedings for that purpose, (iv) of receipt by the
     Company of any notification with respect to the suspension of the
     qualification of the Bonds for sale in any jurisdiction or the initiation
     or threat of any proceeding for that purpose, and (v) of the happening of
     any event which makes untrue any statement of a material fact made in, or
     results in the omission of material information from, the Registration
     Statement or in any Final Prospectus then required to be distributed or
     which requires the making of a change in the Registration Statement or any
     such Final Prospectus in order to make any material statements therein, in
     the light of the circumstances under which they were made, not misleading.
     The Company will make every reasonable effort to prevent the issuance of
     any stop order and, if any stop order is issued, to obtain the lifting
     thereof at the earliest possible moment.

          (d) The Company will give you notice of its intention to file any
     amendment to the Registration Statement or any amendment or supplement to
     the Final Prospectus, whether pursuant to the 1934 Act, 1933 Act or
     otherwise, and will not file any such amendment or supplement without
     furnishing a copy thereof to you and counsel for the Underwriters and
     obtaining your consent to such filing, which consent shall not be
     unreasonably withheld or delayed.

          (e) The Company will deliver to you, as soon as practicable, as many
     signed copies of the Registration Statement as originally filed and of each
     amendment thereto, with signed consents and exhibits filed therewith
     (including exhibits incorporated by reference therein and documents
     incorporated by reference in the Final Prospectus), and will also deliver
     to you such number of conformed copies of the Registration Statement as
     originally filed and of each amendment thereto (including consents and
     exhibits) as you may reasonably request.

          (f) The Company will furnish to each Underwriter, from time to time
     during the period when the Final Prospectus is required to be delivered
     under the 1933 Act, such number of copies of the Final Prospectus (as
     amended or supplemented), other than exhibits to the related Current
     Report, as it may reasonably request for the purposes contemplated by the
     1933 Act or the 1934 Act.

          (g) If at any time when a prospectus relating to the Bonds is required
     to be delivered under the 1933 Act any event occurs as a result of which
     the applicable Final Prospectus as then amended or supplemented would
     include an untrue statement of a material fact, or omit to state any
     material fact necessary to make the statements therein, in the light of the
     circumstances under which they were made, not misleading, or if it is
     necessary at any time to amend such Final Prospectus to comply with the
     1933 Act, the



                                      -9-
<PAGE>   10


     Company, subject to subparagraph (d) above, promptly will prepare and file
     with the Commission an amendment or supplement which will correct such
     statement or omission or an amendment which will effect such compliance;
     provided, however, that the Company will not be required to file any such
     amendment or supplement with respect to any Section 8 Materials
     incorporated by reference in the Final Prospectus other than any amendments
     or supplements of such Section 8 Materials that the Company determines to
     file in accordance therewith.

          (h) The Company will endeavor, in cooperation with you and counsel for
     the Underwriters, to qualify the Bonds for offering and sale under the
     applicable securities and Blue Sky laws of such jurisdictions as you may
     reasonably designate, and will maintain such qualification in effect for a
     period of not less than one year after the date hereof, unless the offering
     and sale of the Bonds is exempt from such qualification under the Secondary
     Mortgage Market Enhancement Act of 1984, and will cooperate with you and
     counsel for the Underwriters, to determine the eligibility of the Bonds for
     investment by institutional investors in such jurisdictions. The Company
     will, at your request or the request of counsel for the Underwriters, file
     such statements and reports as may be required by the laws of each
     jurisdiction in which the Bonds have been qualified as above provided.
     Notwithstanding the foregoing, no such qualification shall be required in
     any jurisdiction where, as a result thereof, the Company would be subject
     to general service of process, other than by reason of the offer and sale
     of the Bonds, qualification as a foreign corporation or to taxation as a
     foreign corporation doing business in such jurisdiction.

          (i) The Company will make generally available to its security holders
     and will deliver to you as soon as practicable an earnings statement,
     conforming to the requirements of Section 11(a) of the 1933 Act, covering a
     period of at least twelve months beginning after the effective date of the
     Registration Statement. Compliance with Rule 158 under the 1933 Act shall
     satisfy the requirements of this paragraph.

          (j) So long as any Bonds are outstanding, the Company will furnish to
     you (or cause to be furnished to you) as soon as practicable upon your
     written request:

               (i) copies of the annual reports and other items required to be
          delivered to the Bondholders pursuant to the Indenture;

               (ii) copies of any reports and financial statements furnished to
          or filed with the Commission or any national securities exchange by
          the Company; and

               (iii) information as to the outstanding principal balances of the
          mortgage loans underlying the Conventional Certificates, and, to the
          extent that such information has been maintained in the ordinary
          course of business by the Company, such other information as may
          reasonably be requested by you which in your judgment is necessary or
          appropriate to the maintenance of a secondary market in the Bonds.



                                      -10-
<PAGE>   11


          (k) So long as any Bonds of any Series underwritten by you are
     outstanding, Capstead will furnish to you within five days after they are
     available, upon your written request, copies of all reports filed by
     Capstead under the 1934 Act.

          (l) The Company, during the period when the Prospectus is required to
     be delivered under the 1933 Act, will file promptly all documents required
     to be filed with the Commission pursuant to Section 13 or 14 of the 1934
     Act; provided, however, that the Company will not be required to file any
     amendment or supplement to the Current Report incorporated by reference in
     the Prospectus other than any amendments or supplements thereto that are
     furnished to the Company by you pursuant to Section 8 hereof which the
     Company determines to file in accordance therewith.

          (m) The Company shall prepare and file with the Commission, within the
     period provided in the related Final Prospectus, its Current Report on Form
     8-K which shall include such detailed information, schedules and reports
     (the "Detailed Description") regarding the Conventional Certificates and
     the mortgage loans underlying such Conventional Certificates relating to
     the Series of Bonds offered by such Final Prospectus (the "Mortgage Loans")
     as you may reasonably request

          (n) During the period, if any, commencing on the date of the
     applicable Terms Agreement and expiring on the date specified in such Terms
     Agreement (the "Stand-Off Period"), neither the Company nor Capstead or any
     subsidiary thereof will, without your prior written consent or as may be
     otherwise permitted by such Terms Agreement, offer or sell, or enter into
     any agreement to sell to the public, any mortgage-related or
     mortgage-backed securities issued by any of them which are similar to the
     Bonds. The provisions of this subparagraph (n) do not apply to securities
     issued or guaranteed by GNMA, FNMA or FHLMC.

     SECTION 4. Payment of Expenses. Unless otherwise specified in the
applicable Terms Agreement, the Company will pay, and Capstead will cause the
Company to pay, the following expenses incident to the performance of the
Company's obligations under this Agreement and the applicable Terms Agreement:
(i) the filing of the Registration Statement with respect to the Bonds and all
amendments thereto, (ii) the printing or photocopying and delivery to the
Underwriters, in such quantities as you may reasonably request, of copies of
this Agreement and the Terms Agreement, (iii) the preparation, registration,
issuance and delivery to the Underwriters of the Bonds underwritten pursuant to
this Agreement, (iv) the fees and disbursements of the Company's counsel, (v)
the printing and delivery to the Underwriters, in such quantities as you may
reasonably request, of copies of the Registration Statement with respect to the
Bonds underwritten pursuant to this Agreement and all amendments thereto, of any
preliminary prospectus and preliminary prospectus supplement and of the Final
Prospectus and all amendments and supplements thereto and all documents
incorporated therein (other than exhibits to the Current Report), of any private
placement memoranda with respect to Bonds that are to be privately placed, and
of any Blue Sky and Legal Investment Surveys, (vi) the printing or photocopying
and delivery to the Underwriters, in such quantities as you may reasonably
request, of copies of the Indenture, (vii) the fees and expenses of the
Independent Accountants under Section 5(f) hereof, (viii) the fees charged by
investment rating agencies for rating the Bonds underwritten pursuant to this
Agreement, (ix) the fees and expenses, if any, incurred in 



                                      -11-
<PAGE>   12


connection with the listing of the Bonds underwritten pursuant to this Agreement
on any national securities exchange, and (x) the fees and expenses of the
Indenture Trustee and its counsel. In addition, you will pay (or cause to be
paid) the remaining expenses incident to the transactions contemplated by this
Agreement and the applicable Terms Agreement, including and without limitation
those related to: (A) the qualification of the Bonds underwritten pursuant to
this Agreement under securities and Blue Sky laws and the determination of the
eligibility of the Bonds for investment in accordance with the provisions of
Section 3(h), including filing fees and the reasonable fees and disbursements of
counsel for the Underwriters in connection therewith and in connection with the
preparation of any Blue Sky Survey and Legal Investment Survey and (B) the fees
and expenses of your counsel.

     If this Agreement is terminated by you in accordance with the provisions of
Section 5 or 10(b)(i), the Company shall, and Capstead will cause the Company
to, reimburse the Underwriters for all of their out-of-pocket expenses,
including the reasonable fees and disbursements of counsel for the Underwriters.

     SECTION 5. Conditions of Underwriters' Obligations. The obligations of the
Underwriters to purchase the Bonds pursuant to any Terms Agreement are subject
to the accuracy in all material respects of the representations and warranties
of the Company and Capstead herein contained, to the performance by the Company
and Capstead of their obligations hereunder, and to the following further
conditions:

          (a) At the applicable Closing Time (i) no stop order suspending the
     effectiveness of the Registration Statement shall have been issued under
     the 1933 Act or proceedings therefor initiated or threatened by the
     Commission, (ii) the rating assigned as of the date of the applicable Terms
     Agreement by any nationally recognized securities rating agency to the
     Bonds to be underwritten at such time pursuant to this Agreement shall not
     have been lowered since that date and (iii) there shall not have come to
     your attention any fact that would cause you to believe that the Final
     Prospectus at the time it was required to be delivered to a purchaser of
     the Bonds to be underwritten at such time pursuant to this Agreement
     contained an untrue statement of a material fact or omitted to state a
     material fact necessary in order to make the statements therein, in light
     of the circumstances existing at such time, not misleading.

          (b) At the applicable Closing Time you shall have received:

     (1) An opinion, addressed to the Underwriters and dated the Closing Time,
of Andrews & Kurth L.L.P., counsel to the Company, in form and substance
reasonably satisfactory to you and counsel for the Underwriters, to the effect
that:

               (i) The Company has been duly incorporated and is validly
          existing as a corporation in good standing under the laws of the State
          of Delaware.

               (ii) The Company has corporate power and authority to own, lease
          and operate its properties and conduct its business as described in
          the applicable Final Prospectus; and the Company is qualified as a
          foreign corporation to transact



                                      -12-
<PAGE>   13


          business in the State of Texas and each other jurisdiction where the
          nature of its assets requires such qualification.

               (iii) All the authorized, issued and outstanding capital stock of
          the Company has been duly authorized and validly issued and is fully
          paid and non-assessable, and is owned of record by Capstead, to the
          knowledge of such counsel, free and clear of any lien, security
          interest, encumbrance, option, warrant, voting trust or similar
          arrangement.

               (iv) The Company is not in violation of its charter or bylaws. To
          the best of such counsel's knowledge, the Company is not in default in
          the performance or observance of any obligation, agreement, covenant
          or condition contained in any material contract, indenture, mortgage,
          loan agreement, note, lease or other instrument to which it is a party
          or by which it or its properties may be bound.


               (v) To the best of such counsel's knowledge, the Company owns or
          possesses or has obtained all material governmental licenses, permits,
          consents, orders, approvals and other authorizations necessary to
          lease or own, as the case may be, and to operate, its properties and
          to carry on its businesses as presently conducted; and, to the best of
          such counsel's knowledge, the Company has conducted and is conducting
          its businesses so as to comply in all material respects with all
          applicable laws.

               (vi) There is no action, suit or proceeding before or by any
          court or governmental agency or body, domestic or foreign, now
          pending, or, to the best of such counsel's knowledge, threatened
          against the Company which could reasonably be expected to interfere
          with or adversely affect the consummation of the transactions
          contemplated herein.

               (vii) The execution and delivery of this Agreement, the
          applicable Terms Agreement and the Indenture (including the applicable
          Series Supplement), the incurrence of the obligations herein and
          therein set forth and the consummation of the transactions
          contemplated herein and therein have been duly authorized by the
          Company, by all necessary action; this Agreement and the applicable
          Terms Agreement have been duly authorized, executed and delivered by
          the Company; and the Indenture (including the applicable Series
          Supplement) has been duly authorized, executed and delivered by the
          Company and constitutes a legal, valid and binding agreement of the
          Company, enforceable in accordance with its terms, subject, as to
          enforceability of remedies, to applicable bankruptcy, insolvency,
          reorganization or other laws affecting creditors' rights generally and
          to general principles of equity and equitable remedies (regardless of
          whether the enforceability of such remedies is considered in a
          proceeding at law or in equity).

               (viii) Neither the execution and delivery of this Agreement, the
          applicable Terms Agreement or the Indenture, the incurrence of the
          obligations



                                      -13-
<PAGE>   14


          herein or therein set forth, nor the consummation of the transactions
          contemplated herein or therein, to the best of such counsel's
          knowledge, will conflict with or constitute a breach of, or default
          under, or result in the creation or imposition of any Lien upon any
          property or assets of the Company pursuant to, any material contract,
          indenture, mortgage, loan agreement, note, lease or other instrument
          to which the Company is a party or by which it may be bound, or to
          which any of its assets is subject (other than the Lien created by the
          Indenture) which separately or in the aggregate are material, nor will
          any such action result in any violation of the provisions of the
          charter or bylaws of the Company or, to the best of such counsel's
          knowledge, of any law, administrative regulation or administrative or
          court decree.

               (ix) No filing or, registration with, notice to or consent,
          approval, authorization or order or other action of, any court or
          governmental authority or agency, is required for the consummation by
          the Company of the transactions contemplated by this Agreement or the
          applicable Terms Agreement, except such as have been obtained and
          except such as may be required under state securities or Blue Sky laws
          in connection with the distribution of the Bonds referred to in such
          Terms Agreement by the Underwriters.

               (x) The issuance of the Bonds to be underwritten at such time
          pursuant to this Agreement has been duly authorized by the Company and
          such Bonds have been duly executed and delivered by the Company and,
          assuming due authorization, execution and delivery of the Indenture by
          the Indenture Trustee, when authenticated by the Indenture Trustee in
          accordance with the terms of the Indenture and delivered to and paid
          for by the Underwriters pursuant to the applicable Terms Agreement,
          will constitute legal, valid and binding non-recourse obligations of
          the Company, enforceable in accordance with their terms, subject, as
          to enforceability of remedies, to applicable bankruptcy, insolvency,
          reorganization or other laws affecting creditors' rights generally and
          to general principles of equity and equitable remedies (regardless of
          whether the enforceability of such remedies is considered in a
          proceeding at law or in equity), and the Bonds are entitled to the
          benefits and security provided by the Indenture.

               (xi) The Bonds to be underwritten at such time pursuant to this
          Agreement and the Indenture conform in all material respects to the
          respective descriptions thereof contained in the applicable Final
          Prospectus (excluding any descriptions thereof in the Current Report,
          as to which no opinion need be rendered).

               (xii) At the Closing Time, the Company had corporate power and
          authority to assign, pledge and deliver the Initial Collateral to the
          Indenture Trustee under the Indenture, and had duly authorized such
          assignment, pledge and delivery to the Indenture Trustee by all
          necessary corporate action.

               (xiii) Immediately prior to the grant to the Indenture Trustee of
          the Conventional Certificates securing the Bonds to be underwritten at
          such time



                                      -14-
<PAGE>   15


          pursuant to this Agreement, the Company owned such Conventional
          Certificates, free and clear of any Lien, except the lien of the
          Indenture; each such Conventional Certificate has been duly and
          validly assigned, pledged and delivered by the Company to the
          Indenture Trustee or its nominee under the Indenture; the Indenture,
          together with such assignment, pledge and delivery of each such
          Conventional Certificate, the filing of a UCC-1 financing statement
          with respect to the Conventional Certificates with the office of the
          Secretary of State of the State of Texas and in such other
          jurisdictions, if any, as such counsel deems appropriate, and the
          possession by the Indenture Trustee, or its nominee, of the
          Conventional Certificates not represented by book-entry accounts and
          of the other assets comprising the Initial Collateral, create as
          security for such Bonds a valid and perfected security interest in the
          Trust Estate as security for the repayment of such Bonds free and
          clear of any prior Lien; a UCC-1 financing statement with respect to
          the security interest created by the Indenture has been filed in the
          office of the Secretary of State of the State of Texas and in such
          other offices, if any, as such counsel deems appropriate; no other
          recordings or filings in any jurisdiction are necessary to perfect the
          security interest of the Indenture Trustee in the Initial Collateral
          as against any third party, and no further action is required to
          create, attach or perfect such security interest except that:

          (A)  appropriate continuation statements with respect to the UCC-1
               financing statements referred to above must be filed within six
               months prior to the expiration of each consecutive five-year
               period commencing upon the date of initial filing, and

          (B)  with respect to items of Initial Collateral and the distributions
               thereof, a perfected security interest in which is perfected by
               delivery of possession, possession of such items must be
               maintained by the Indenture Trustee or its bailee (other than an
               affiliate of the Company).

               (xiv) The Registration Statement is effective under the 1933 Act,
          and, to the best of such counsel's knowledge, no stop order suspending
          the effectiveness of the Registration Statement has been issued under
          the 1933 Act and no proceedings for that purpose have been instituted
          or threatened by the Commission. The Indenture has been duly qualified
          under the 1939 Act.

               (xv) The Registration Statement and the applicable Final
          Prospectus, and each amendment or supplement thereto (other than the
          financial statements, schedules, notes thereto, and the financial and
          statistical data included therein and any documents incorporated by
          reference in the Registration Statement and the applicable Final
          Prospectus, including without limitation the Current Report, in each
          case as to which no opinion need be rendered), as of their respective
          effective or issue dates, complied as to form in all material respects
          with the requirements of the 1933 Act, the 1933 Act Regulations, the
          1939 Act and the 1939 Act Regulations; and each document, if any,
          filed pursuant to the 1934 Act (other than the financial statements,
          schedules, notes thereto, and the financial and statistical data
          included therein and any documents incorporated by reference in



                                      -15-
<PAGE>   16

          the Registration Statement and the applicable Final Prospectus,
          including without limitation the Current Report, in each case as to
          which no opinion need be rendered) and incorporated by reference in
          the applicable Final Prospectus, complied when so filed as to form in
          all material respects with the 1934 Act and the rules and regulations
          thereunder.

               (xvi) The statements in the applicable Final Prospectus under the
          caption "Certain Federal Income Tax Consequences", to the extent they
          constitute matters of law or legal conclusions, have been prepared or
          reviewed by such counsel and correctly represent the opinion of such
          counsel; the descriptions in such Final Prospectus of statutes, legal
          and governmental proceedings and contracts and other documents are
          accurate and fairly present the information required to be shown.

               (xvii) To the best of such counsel's knowledge, there are no
          legal or governmental proceedings pending or threatened which are
          required to be disclosed therein, nor any contracts or documents of a
          character required to be described or referred to in the Registration
          Statement or to be filed as exhibits thereto other than those
          described or referred to therein or filed as exhibits thereto (other
          than financial statements, schedules, and notes thereto and the
          financial and statistical data included therein and the other
          documents, if any, incorporated by reference therein, as to which no
          opinion need be rendered).

               (xviii) The Company is not, and will not as a result of the offer
          and sale of the Bonds as contemplated in this Agreement and any
          applicable Terms Agreement, become an "investment company" as such
          term is defined in the Investment Company Act which would be required
          to register under the Investment Company Act.

               (xix) Nothing has come to the attention of such counsel that
          would lead them to believe that the Registration Statement or any
          amendment thereto (other than the financial statements, schedules,
          notes thereto and the financial and statistical data included therein
          and any documents incorporated by reference therein including without
          limitation the Current Report related thereto, in each case as to
          which no opinion need be rendered), at their respective effective
          dates, contained an untrue statement of a material fact or omitted to
          state a material fact required to be stated therein or necessary to
          make the statements therein not misleading, or that the Final
          Prospectus or any amendment or supplement thereto (other than the
          Current Report related thereto, in each case as to which no opinion
          need be rendered), at their respective issue dates or, as amended or
          supplemented (except as aforesaid), at Closing Time, contained an
          untrue statement of a material fact or omitted to state a material
          fact necessary in order to make the statements therein, in the light
          of the circumstances under which they were made, not misleading.

               (xx) The Bonds to be underwritten at such time pursuant to this
          Agreement, or the Classes thereof as are identified in such opinion
          for these



                                      -16-
<PAGE>   17


          purposes, will be "mortgage related securities", as defined in Section
          3(a)(41) of the 1934 Act, so long as such Bonds or the identified
          Classes are rated in one of the two highest rating categories by at
          least one nationally recognized statistical rating organization.

     (2)  The opinion, addressed to the Underwriters and dated the Closing Time,
of counsel to Capstead in form and substance reasonably satisfactory to you and
counsel for the Underwriters, to the effect that:

               (i) Capstead has been duly organized and is validly existing as a
          corporation, in good standing under the laws of the jurisdiction of
          its organization with corporate power and authority to own, lease and
          operate its properties and conduct its business as described in the
          applicable Final Prospectus.

               (ii) Capstead is not, nor will it be, as a result of its entering
          into this Agreement and consummating the transactions contemplated
          hereby, in violation of its charter or bylaws, and to the best of such
          counsel's knowledge, is not in default in the performance or
          observance of any obligation, agreement, covenant or condition
          contained in any material contract, indenture, mortgage, loan
          agreement, note, lease or other instrument to which it is a party or
          by which it or its properties may be bound.

               (iii) There is no action, suit or proceeding before or by any
          court or governmental agency or body, domestic or foreign, now
          pending, or, to the best of such counsel's knowledge, against Capstead
          which could reasonably be expected to interfere with or adversely
          affect the consummation of the transactions contemplated herein.

               (iv) The execution and delivery of this Agreement and the
          applicable Terms Agreement, the incurrence of the obligations herein
          and therein set forth and the consummation of the transactions
          contemplated herein and therein have been duly authorized by Capstead
          by all necessary corporate action; and this Agreement and the
          applicable Terms Agreement have been duly authorized, executed and
          delivered by Capstead.

               (v) No filing or registration with, notice to or consent,
          approval, authorization or order or other action of, any court or
          governmental authority or agency, is required for the consummation by
          Capstead of the transactions contemplated by this Agreement or the
          applicable Terms Agreement, except such as have been obtained and
          except such as may be required under state securities or Blue Sky laws
          in connection with the distribution of the Bonds to be underwritten at
          such time pursuant to this Agreement by the Underwriters.

          (c) At the Closing Time you shall have received the opinion of Andrews
     & Kurth L.L.P., addressed to the Underwriters and dated the Closing Time,
     with respect to certain tax matters, in substantially the same form as
     their opinion filed as Exhibit 8.1 of the Registration Statement.



                                      -17-
<PAGE>   18


               (d) At the Closing Time you shall have received the favorable
          opinion, dated the Closing Time, of Brown & Wood LLP, counsel for the
          Underwriters, with respect to the matters set forth in clauses (i),
          (vii), (x), (xi), (xiv), (xv), (xix) and (xx) of paragraph (b)(1) of
          this Section 5 and in clause (iv) of paragraph (b)(2) of this Section
          5.

               (e) At the Closing Time there shall not have been, since the date
          of the applicable Terms Agreement or since the respective dates as of
          which information is given in the Registration Statement, any material
          adverse change in the condition, financial or otherwise, earnings,
          business affairs, regulatory situation or business prospects of the
          Company or Capstead, whether or not arising in the ordinary course of
          business, and you shall have received, at the Closing Time, a
          certificate of the Chairman of the Board, the President, any Senior
          Executive Vice President, Executive Vice President, Senior Vice
          President, Vice President or Authorized Officer of the Company and of
          Capstead to the effect that there has been no such material adverse
          change and to the effect that the other representations and warranties
          of the Company and Capstead contained in Section 1 are true and
          correct with the same force and effect as though made at and as of the
          Closing Time.

               (f) The Company and you shall have received from Deloitte &
          Touche (the "Independent Accountants") an agreed upon procedures
          letter, dated as of the date of the applicable Terms Agreement and
          delivered simultaneously with the printing of the Final Prospectus, in
          form and substance satisfactory to you. In addition, the Company and
          you shall have received from the Independent Accountants an agreed
          upon procedures letter, in form and substance satisfactory to you,
          with respect to the Section 8 Materials.

               (g) At the Closing Time, you and the Company shall have received
          the favorable opinion of counsel for the Indenture Trustee, addressed
          to the Underwriters and the Company and dated the Closing Time, in
          form and substance satisfactory to you and counsel for the
          Underwriters and the Company, to the effect that:

                    (i) The Indenture Trustee is duly incorporated, validly
               existing and in good standing as a national banking association
               under the laws of the United States of America, with full
               corporate and trust power and authority to conduct its business
               and affairs as a Indenture Trustee;

                    (ii) The Indenture Trustee has full power and authority to
               execute and deliver the Indenture and to perform its obligations
               thereunder;

                    (iii) The Indenture Trustee has duly accepted the office of
               Indenture Trustee under the Indenture; and

                    (iv) The Indenture Trustee has duly authorized, executed and
               delivered the Indenture.

               (h) At the Closing Time, the Bonds then to be underwritten
          pursuant to this Agreement shall be rated in the highest rating
          category by the rating agencies requested to rate such Bonds or such
          other rating category as the related Terms Agreement shall state.



                                      -18-
<PAGE>   19



               (i) At the Closing Time, counsel for the Underwriters shall have
          been furnished with such documents and opinions (including copies of
          insurance policies described in the applicable Final Prospectus and
          opinions of counsel with respect to such policies) as they may
          reasonably require for the purpose of enabling them to pass upon the
          Registration Statement, the applicable Final Prospectus, the issuance
          and sale of the Bonds then to be underwritten pursuant to this
          Agreement as contemplated in the applicable Terms Agreement and
          related proceedings, or in order to evidence the accuracy of any of
          the representations and warranties, or the fulfillment of any of the
          conditions, herein contained; and all proceedings taken by the Company
          and Capstead in connection with the issuance and sale of the Bonds
          then to be underwritten pursuant to this Agreement as contemplated in
          the applicable Terms Agreement and in the Indenture shall be
          reasonably satisfactory in form and substance to you and counsel for
          the Underwriters.

          If any condition in this Section shall not have been fulfilled when
     and as required to be fulfilled, this Agreement and the applicable Terms
     Agreement may be terminated by you by notice to the Company at any time at
     or prior to the Closing Time, and such termination shall be without
     liability of any party to any other party except as provided in Section 4.

          SECTION 6. Indemnification. (a) The Company and Capstead, jointly and
     severally, agree to indemnify and hold harmless each Underwriter and each
     person, if any, who controls any Underwriter within the meaning of Section
     15 of the 1933 Act as follows:

                    (i) against any and all loss, liability, claim, damage and
               expense whatsoever, as incurred, arising out of any untrue
               statement or alleged untrue statement of a material fact
               contained in the Registration Statement (or any amendment
               thereto), or the omission or alleged omission therefrom of a
               material fact required to be stated therein or necessary to make
               the statements therein not misleading or arising out of any
               untrue statement or alleged untrue statement of a material fact
               contained in any preliminary prospectus, preliminary prospectus
               supplement or the Final Prospectus (or any amendment or
               supplement thereto) or the omission or alleged omission therefrom
               of a material fact necessary in order to make the statements
               therein in the light of the circumstances under which they were
               made not misleading; provided, however, that (A) the Company
               shall not be liable in any such case if such untrue statement or
               omission or such alleged untrue statement or omission was made
               (1) in reliance upon and in conformity with written information
               furnished to the Company by any Underwriter through you expressly
               for use in the Registration Statement (or any amendment thereto)
               or in any preliminary prospectus, preliminary prospectus
               supplement or each Final Prospectus (or any amendment or
               supplement thereto) or (2) in any Current Report or any amendment
               or supplement thereof, except to the extent that any untrue
               statement or alleged untrue statement therein results (or is
               alleged to have resulted) directly from an error (a "Mortgage
               Collateral Error") in the information concerning the
               characteristics of the Mortgage Loans furnished by the Company to
               you in writing or by electronic transmission that was used in the
               preparation of either (x) any Section 8 Materials (or amendments
               or supplements thereof) included in such Current Report (or
               amendment or supplement thereof) or (y) any



                                      -19-
<PAGE>   20


               written or electronic materials furnished to prospective
               investors on which the Section 8 Materials (or amendments or
               supplements thereof) were based; (B) such indemnity with respect
               to any Corrected Statement (as defined below) in such Final
               Prospectus (or supplement thereto) shall not inure to the benefit
               of any Underwriter (or any person controlling any Underwriter)
               from whom the person asserting any loss, claim, damage or
               liability purchased the Bonds that are the subject thereof if
               such person did not receive a copy of a supplement to such Final
               Prospectus at or prior to the confirmation of the sale of such
               Bonds and the untrue statement or omission of a material fact
               contained in such Final Prospectus (or supplement thereto) was
               corrected (a "Corrected Statement") in such other supplement and
               such supplement was furnished by the Company to you prior to the
               delivery of such confirmation; and (C) such indemnity with
               respect to any Mortgage Collateral Error shall not inure to the
               benefit of any Underwriter (or any person controlling the
               Underwriter) from whom the person asserting any loss, claim,
               damage or liability received any Section 8 Materials (or any
               written or electronic materials on which the Section 8 Materials
               are based) that were prepared on the basis of such Mortgage
               Collateral Error, if, prior to the time of confirmation of the
               sale of the applicable Bonds to such person, the Company notified
               you in writing of the Mortgage Collateral Error or provided in
               written or electronic form information superseding or correcting
               such Mortgage Collateral Error (in any such case a "Corrected
               Mortgage Collateral Error"), and such Underwriter failed to
               notify such person thereof or to deliver to such person corrected
               Section 8 Materials (or underlying written or electronic
               materials relating thereto);

                    (ii) against any and all loss, liability, claim, damage and
               expense whatsoever, as incurred, to the extent of the aggregate
               amount paid in settlement of any litigation, investigation or
               proceeding by any governmental agency or body, commenced or
               threatened, or of any claim whatsoever based, in each case, upon
               any such untrue statement or omission, or any such alleged untrue
               statement or omission, if such settlement is effected with the
               written consent of the Company;

                    (iii) against any and all expense whatsoever, as incurred
               (including the reasonable fees and disbursements of counsel
               chosen by you) reasonably incurred in investigating, preparing or
               defending against any litigation, or investigation or proceeding
               by any governmental agency or body, commenced or threatened or
               any claim whatsoever based upon any such untrue statement or
               omission, or any such alleged untrue statement or omission, to
               the extent that any such expense is not paid under paragraphs (i)
               or (ii) above;

               (b) Each Underwriter severally agrees to indemnify and hold
          harmless the Company, its directors, each of its officers who signed
          the Registration Statement, Capstead and each person, if any, who
          controls the Company or Capstead within the meaning of Section 15 of
          the 1933 Act and the officers and directors of any such person against
          any and all loss, liability, claim, damage and expense described in
          the indemnity contained in subsection (a) of this Section, but only
          with respect to untrue statements or



                                      -20-
<PAGE>   21


          omissions, or alleged untrue statements or omissions, made in the
          Registration Statement (or any amendment thereto) or any preliminary
          prospectus, preliminary prospectus supplement or the Final Prospectus
          (or any amendment or supplement thereto) in reliance upon and in
          conformity with (i) written information furnished to the Company by
          such Underwriter expressly for use in the Registration Statement (or
          any amendment thereto) or in any preliminary prospectus, preliminary
          prospectus supplement or each Final Prospectus (or any amendment or
          supplement thereto) or (ii) any Section 8 Materials (or amendments or
          supplements thereof) furnished to the Company by such Underwriter
          pursuant to Section 8 hereof and incorporated by reference in such
          Registration Statement or the related Final Prospectus or any
          amendment or supplement thereto (except that no such indemnity shall
          be available for any losses, claims, damages or liabilities, or
          actions in respect thereof, resulting from any Mortgage Collateral
          Error, other than a Corrected Mortgage Collateral Error).

               (c) Promptly after receipt by an indemnified party under Section
          6 of notice of the commencement of any action, such indemnified party
          will, if a claim in respect thereof is to be made against an
          indemnifying party under this Section 6, notify such indemnifying
          party in writing of the commencement thereof; but the omission so to
          notify such indemnifying party will not relieve it from any liability
          which it may have to any indemnified party otherwise than under this
          Section 6. In case any such action is brought against any indemnified
          party, and it notifies the indemnifying party or parties of the
          commencement thereof, the indemnifying party or parties will be
          entitled to participate therein, and to the extent that they may elect
          by written notice delivered to an indemnified party promptly after
          receiving the aforesaid notice from such indemnified party, to assume
          the defense thereof, with counsel satisfactory to such indemnified
          party; provided, however, that if the defendants in any such action
          include both an indemnified party and an indemnifying party and such
          indemnified party shall have reasonably concluded that there may be
          legal defenses available to it and/or other indemnified parties which
          are different from or addition to those available to any indemnifying
          party, such indemnified party or parties shall have the right to
          select separate counsel to assert such legal defenses and to otherwise
          participate in the defense of such action on behalf of such
          indemnified party or parties. Upon receipt of notice from an
          indemnifying party or parties to such indemnified party of their
          election so to assume the defense of such action and approval by such
          indemnified party or counsel, such indemnifying party or parties will
          not be liable to such indemnified party under this Section 6 for any
          legal or other expenses subsequently incurred by such indemnified
          party in connection with the defense thereof unless (i) such
          indemnified party shall have employed separate counsel in connection
          with the assertion of legal defenses in accordance with the proviso to
          the next preceding sentence (it being understood, however, that the
          indemnifying party or parties shall not be liable for the expenses of
          more than one separate counsel approved by the indemnified party or
          parties in the case of subparagraph (a) or (b) above, representing the
          indemnified parties under subparagraph (a) or (b) above, who are
          parties to such action), (ii) the indemnifying party or parties shall
          not have employed counsel satisfactory to the indemnified party or
          parties to represent such indemnified party or parties within a
          reasonable time after notice of commencement of the action or (iii)
          the indemnifying party or parties have authorized the employment of
          counsel for an indemnified party at



                                      -21-
<PAGE>   22


          the expense of the indemnifying parties; and except that, if clause
          (i) or (iii) is applicable, such liability shall be only in respect of
          the counsel referred to in such clause (i) or (iii). 

               (d) The indemnity agreement provided by this Section 6 shall be
          in addition to any liability the Company and the Underwriters shall
          otherwise have.

          SECTION 7. Contribution. In order to provide for just and equitable
     contribution in circumstances in which the indemnity agreement provided for
     in Section 6 is for any reason held to be unavailable to or insufficient to
     hold harmless the indemnified parties although applicable in accordance
     with its terms, the Company and Capstead, on the one hand, and the
     Underwriters on the other, shall:

               (a) in the case of any losses, claims, damages and liabilities
          (or actions in respect thereof) relating to a class or classes of any
          Series of Bonds (a "Class" or "Classes," as the case may be) which do
          not arise out of or are not based upon any untrue statement or
          omission of a material fact in any Section 8 Materials (or any
          amendments or supplements thereof), contribute to the aggregate
          losses, liabilities, claims, damages and expenses of the nature
          contemplated by said indemnity agreement incurred in respect of any
          Class or Classes underwritten pursuant to this Agreement by the
          Company or Capstead and the Underwriter of such Class or Classes, as
          incurred, in such proportions that the Underwriter of such Class or
          Classes is responsible for that portion represented by the percentage
          that the difference between the proceeds to the Company appearing on
          the cover page of the applicable Final Prospectus and the total of all
          proceeds received by such Underwriter from the sale of all Bonds
          underwritten by it (the "Underwriting Discount") bears to the total
          proceeds received by such Underwriter from such Bonds, and the Company
          and Capstead are responsible for the balance;

               (b) in the case of any losses, claims, damages and liabilities
          (or actions in respect thereof) which arise out of or are based upon
          any untrue statement or omission of a material fact in any Section 8
          Materials (or any amendments or supplements thereof), contribute to
          the aggregate losses, liabilities, claims, damages and expenses of the
          nature contemplated by said indemnity agreement incurred in respect of
          any Class or Classes underwritten pursuant to this Agreement by the
          Company or Capstead, and the Underwriter of such Class or Classes, as
          incurred, in such proportion as is appropriate to reflect the relative
          fault of the Company and Capstead on the one hand and such Underwriter
          on the other hand in connection with the statements or omissions which
          resulted in such losses, liabilities, claims, damages and expenses (or
          actions in respect thereof) as well as any other relevant equitable
          considerations; provided that in no event shall such Underwriter be
          responsible for an amount greater than the excess, if any, of (i) the
          total proceeds received by such Underwriter in the sale of all Bonds
          underwritten by it (taking into account any gains or losses realized
          by such Underwriter in any hedging transactions directly related to
          the Bonds) over (ii) the proceeds received by the Company in respect
          of the Bonds purchased by such Underwriter.


     provided, however, that no person guilty of fraudulent misrepresentation
     (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to
     contribution from any person who was not guilty of such fraudulent
     misrepresentation. For purposes of this Section, each person, if any,



                                      -22-
<PAGE>   23


     who controls an Underwriter within the meaning of Section 15 of the 1933
     Act shall have the same rights to contribution as such Underwriter and each
     director of the Company, each officer of the Company and Capstead who
     signed the Registration Statement, and each person, if any, who controls
     the Company or Capstead within the meaning of Section 15 of the 1933 Act
     and the officers and directors of any such person shall have the same
     rights to contribution as the Company or Capstead.

          SECTION 8. Computational Materials and Structural Term Sheets. (a) As
     soon as practicable and in no event later than 3:00 p.m. Dallas, Texas time
     one Business Day before the date on which the Final Prospectus relating to
     the Bonds of a Series is required to be filed by the Company with the
     Commission pursuant to Rule 424 under the 1933 Act, you shall deliver to
     the Company five complete copies of all materials provided by you to
     prospective investors regarding the Class or Classes being underwritten by
     you which constitute (i) "Computational Materials" within the meaning of
     the no-action letter dated May 20, 1994 issued by the Division of
     Corporation Finance of the Commission to Kidder, Peabody Acceptance
     Corporation I, Kidder, Peabody & Co. Incorporated, and Kidder Structured
     Asset Corporation and the no-action letter dated May 27, 1994 issued by the
     Division of Corporation Finance of the Commission to the Public Securities
     Association (together, the "Kidder Letters") and the filing of such
     material is a condition of the relief granted in such letter (such
     materials being the "Computational Materials"), and (ii) "Structural Term
     Sheets" within the meaning of the no-action letter dated February 17, 1995
     issued by the Division of Corporation Finance of the Commission to the
     Public Securities Association (the "PSA Letter") and the filing of such
     material is a condition of the relief granted in such letter (such
     materials being the "Structural Term Sheets"). Each delivery of
     Computational Materials or Structural Terms Sheets to the Company pursuant
     to this paragraph (a) shall be effected by delivering four copies of such
     materials to counsel for the Company at Andrews & Kurth L.L.P., 1717 Main
     Street, Suite 3700, Dallas, Texas 75201, or such other address specified by
     such counsel to you in writing, and one copy of such materials to the
     Company.

          (b) You represent and warrant to and agree with the Company, as of the
     date of the related Terms Agreement and as of the Closing Date, that:

                    (i) the Computational Materials furnished to the Company
               pursuant to Section 8(a) constitute (either in original,
               aggregated or consolidated form) all of the materials furnished
               to prospective investors by the Underwriters prior to the time of
               delivery thereof to the Company that are required to be filed
               with the Commission with respect to the related Bonds in
               accordance with the Kidder Letters, and such Computational
               Materials comply with the requirements of the Kidder Letters;

                    (ii) the Structural Term Sheets furnished to the Company by
               such Underwriter pursuant to Section 8(a) constitute all of the
               materials furnished to prospective investors by such Underwriter
               prior to the time of delivery thereof to the Company that are
               required to be filed with the Commission as "Structural Term
               Sheets" with respect to the related Offered Securities in
               accordance with the PSA Letter, and such Structural Term Sheets
               comply with the requirements of the PSA Letter; and



                                      -23-
<PAGE>   24


                    (iii) on the date any such Computational Materials or
               Structural Term Sheets with respect to such Bonds (or any written
               or electronic materials furnished to prospective investors on
               which the Computational Materials or Structural Term Sheets are
               based) were last furnished to each prospective investor and on
               the date of delivery thereof to the Company pursuant to Section
               8(a) and on the related Closing Date, such Computational
               Materials or Structural Term Sheets (or any such written or
               electronic materials furnished to prospective investors on which
               the Computational Materials or Structural Term Sheets are based)
               did not and will not include any untrue statement of a material
               fact or, when read in conjunction with the Final Prospectus and
               Prospectus Supplement, omit to state a material fact required to
               be stated therein or necessary to make the statements therein not
               misleading.

Notwithstanding the foregoing, you make no representation or warranty as to
whether any Computational Materials or Structural Term Sheets (or any written or
electronic materials on which the Computational Materials or Structural Term
Sheets are based) included or will include any untrue statement resulting
directly from any Mortgage Collateral Error (except any Corrected Mortgage
Collateral Error, with respect to materials prepared after the receipt by you
from the Company of notice of such Corrected Mortgage Collateral Error or
materials superseding or correcting such Corrected Mortgage Collateral Error).

     (c) You acknowledge and agree that the Company has not authorized and will
not authorize the distribution of any Computational Materials or Structural Term
Sheets to any prospective investor, and agree that any Computational Materials
or Structural Term Sheets with respect to any Series of Bonds furnished to
prospective investors from and after the date hereof shall include a disclaimer
in form reasonably satisfactory to the Company. You agree that you will not
represent to investors that any Computational Materials or Structural Term
Sheets were prepared or disseminated on behalf of the Company. This disclaimer
shall not alter the rights or obligations of the parties hereto pursuant to
Sections 6 and 7 hereof.

     (d) If, at any time when a prospectus relating to the Bonds of a Series is
required to be delivered under the 1933 Act, it shall be necessary to amend or
supplement the related Final Prospectus as a result of an untrue statement of a
material fact contained in any Computational Materials or Structural Term Sheets
provided by you pursuant to this Section 8 or the omission to state therein a
material fact required, when considered in conjunction with the Final Prospectus
and Prospectus Supplement, to be stated therein or necessary to make the
statements therein, when read in conjunction with the Final Prospectus and
Prospectus Supplement, not misleading, or if it shall be necessary to amend or
supplement any Current Report relating to any Computational Materials or
Structural Term Sheets to comply with the 1933 Act or the rules thereunder, you
promptly will prepare and furnish to the Company for filing with the Commission
an amendment or supplement which will correct such statement or omission or an
amendment which will effect such compliance. You represent and warrant to the
Company, as of the date of delivery of such amendment or supplement to the
Company, that such amendment or supplement will not include any untrue statement
of a material fact or, when read in conjunction with the Final Prospectus and
Prospectus Supplement, omit to state a material fact required to be stated
therein or necessary to make the statements therein not misleading. The Company
shall have no obligation to file such amendment or supplement if the Company



                                      -24-
<PAGE>   25


determines that (i) such amendment or supplement contains any untrue statement
of a material fact or, when read in conjunction with the Final Prospectus and
Prospectus Supplement, omits to state a material fact required to be stated
therein or necessary to make the statements therein not misleading (it being
understood, however, that the Company shall have no obligation to review or pass
upon the accuracy or adequacy of, or to correct, any such amendment or
supplement provided by the Underwriter to the Company pursuant to this paragraph
(d)) or (ii) such filing is not required under the Act; provided that, in the
event the Company makes such a determination, it shall immediately notify you in
writing of the reasons for such determination; and, provided, further, that it
shall file such amendment or supplement if you specifically confirm in writing
to the Company that (A) such amendment or supplement does not contain any untrue
statement of a material fact or, when read in conjunction with the Final
Prospectus and Prospectus Supplement, omit to state a material fact required to
be stated therein or necessary to make the statements therein not misleading and
(B) you are advising the Company to file such amendment or supplement.

     (e) You will cooperate with, and provide any information necessary to the
Independent Accountants so that they may complete and deliver their agreed-upon
procedures letter described in Section 5(f) hereof in a timely manner so that
such letter may be delivered to the Company by not later than 5:00 p.m. New York
time, on the Business Day before the date on which the Current Report described
in Section 3(b) is required to be filed with the Commission.

     SECTION 9. Representations, Warranties, and Agreements to Survive Delivery.
All representations, warranties and agreements contained in this Agreement, or
contained in certificates of officers of the Company or Capstead submitted
pursuant hereto or as contemplated hereby, shall remain operative and in full
force and effect, regardless of any investigation made by or on behalf of the
Company or Capstead or a controlling person thereof, and shall survive delivery
of any Bonds to the Underwriters.

     SECTION 10. Termination of Agreement. (a) This Agreement may be terminated
for any reason at any time by either the Company or you upon the giving of
thirty days' written notice of such termination to the other party hereto;
provided, however, that if a Terms Agreement has been entered into but the
applicable Closing Time has not occurred, this Agreement shall not be terminated
pursuant to this Section 10(a) prior to such Closing Time.

     (b) You may terminate this Agreement or such Terms Agreement, by notice to
the Company, at any time at or prior to the Closing Time, (i) if there has been,
since the respective dates as of which information is given in the Registration
Statement or the applicable Final Prospectus, any material adverse change in the
condition, financial or otherwise, earnings, business affairs, regulatory
situation or business prospects of the Company or Capstead, whether or not
arising in the ordinary course of business, (ii) if there shall have occurred
any material adverse change in the financial markets of the United States or any
outbreak or escalation of hostilities or other national or international
calamity or crisis the effect of which is such as to make it, in your judgment,
impracticable to market the Bonds or enforce contracts for the sale of the
Bonds, or (iii) if trading in any securities of the Company has been suspended
by the Commission or a national securities exchange, or if trading generally on
either the American Stock Exchange or the New York Stock Exchange shall have
been suspended, or minimum or maximum prices for trading have been fixed, or
maximum ranges for prices for securities have



                                      -25-
<PAGE>   26


been required, by either of said exchanges or by order of the Commission or any
other governmental authority, or if a banking moratorium shall have been
declared by either Federal or New York authorities, or (iv) if the rating
assigned by any nationally recognized securities rating agency requested to rate
any specific debt securities of the Company as of the date of any applicable
Terms Agreement shall have been lowered since that date or if any such rating
agency shall have publicly announced that it has under surveillance or review,
with possible negative implications, its requested rating of such debt
securities of the Company, or (v) if there shall have come to your attention any
facts that would cause you to believe that the applicable Final Prospectus, at
the time it was required to be delivered to a purchaser of the Bonds offered
thereby, contained an untrue statement of a material fact or omitted to state a
material fact necessary in order to make the statements therein, in light of the
circumstances existing at the time of such delivery, not misleading.

     (c) In the event of any such termination, (i) the covenants set forth in
Section 3 with respect to any offering of Bonds shall remain in effect so long
as any Underwriter owns any such Bonds purchased from the Company pursuant to
the applicable Terms Agreement and (ii) the provisions of Section 4, the
indemnity agreement set forth in Section 6, the contribution provisions set
forth in Section 7, and the provisions of Sections 8, 9 and 14 shall remain in
effect.


     SECTION 11. Default by One or More of the Underwriters. If one or more of
the Underwriters shall fail at the Closing Time to purchase the Bonds which it
or they are obligated to purchase hereunder and under the applicable Terms
Agreement (the "Defaulted Bonds"), you shall have the right, within 24 hours
thereafter, to make arrangements for one or more of the non-defaulting
Underwriters, or any other underwriters, to purchase all, but not less than all,
of the Defaulted Bonds in such amounts as may be agreed upon and upon the terms
herein set forth and under the applicable Terms Agreement. If, however, you have
not completed such arrangements within such 24-hour period, then:

          (a) if the aggregate original principal amount of Defaulted Bonds does
     not exceed 10% of the aggregate original principal amount of the Bonds to
     be purchased pursuant to such Terms Agreement, the non-defaulting
     Underwriters named in such Terms Agreement shall be obligated to purchase
     the full amount thereof in the proportions that their respective
     underwriting obligations thereunder bear to the underwriting obligations of
     all non-defaulting Underwriters; and

          (b) if the aggregate original principal amount of Defaulted Bonds
     exceeds 10% of the aggregate original principal amount of the Bonds to be
     purchased pursuant to such Terms Agreement, the applicable Terms Agreement
     shall terminate without any liability on the part of any non-defaulting
     Underwriter.

     No action taken pursuant to this Section 11 and nothing in this Agreement
shall relieve any defaulting Underwriter from liability in respect of its
default.

     In the event of any such default which does not result in a termination of
this Agreement or such applicable Terms Agreement, either you or the Company
shall have the right to postpone the Closing Time for a period of time not
exceeding seven days in order to effect any required changes in the Registration
Statement or in any other documents or arrangements.



                                      -26-
<PAGE>   27


     SECTION 12. Notices. All notices and other communications hereunder shall
be in writing and shall be deemed to have been duly given if mailed or
transmitted by any standard form of written telecommunication. Notices to the
Company shall be directed to its agent for service set forth on the cover page
of the Registration Statement, notices to the Company shall be directed to it at
CityPlace Center East, 2711 N. Haskell Avenue, Suite 900, Dallas, Texas 75204,
Attention: Ronn K. Lytle and notices to you shall be directed to you c/o
Greenwich Capital Markets, Inc., 600 Steamboat Road, Greenwich, Connecticut
06830, or in respect of any Terms Agreement, to such other person and place
agreed upon by those of you who are parties to such Terms Agreements.

     SECTION 13. Parties. This Agreement shall inure to the benefit of and be
binding upon you, the Company and Capstead, and any Terms Agreement shall inure
to the benefit of and be binding upon the Company and Capstead and any
Underwriter who becomes a party to such Terms Agreement, and their respective
successors. Nothing expressed or mentioned in this Agreement or any Terms
Agreement is intended or shall be construed to give any person, firm or
corporation, other than the parties hereto and their respective successors and
the controlling persons and officers and directors referred to in Sections 6 and
7 and their heirs and legal representatives, any legal or equitable right,
remedy or claim under or in respect of this Agreement or any Terms Agreement or
any provision herein or therein contained. This Agreement and any Terms
Agreement and all conditions and provisions hereof are intended to be for the
sole and exclusive benefit of the parties hereto and thereto and their
respective successors, and said controlling persons and officers and directors
and their heirs and legal representatives, and for the benefit of no other
person, firm or corporation. No purchaser of Bonds from any Underwriter shall be
deemed to be a successor by reason merely of such purchase.

     SECTION 14. GOVERNING LAW AND TIME. THIS AGREEMENT AND EACH TERMS AGREEMENT
SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
NEW YORK. SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.




                                      -27-
<PAGE>   28


         If the foregoing is in accordance with your understanding hereof, the
form of acceptance set forth below should be signed by you, whereupon this
instrument along with all counterparts will become a binding agreement among the
Company, Capstead, and us in accordance with its terms.

                                     Very truly yours,

                                     CAPSTEAD SECURITIES CORPORATION IV


                                     By:  /s/ WADE WALKER
                                         --------------------------------------
                                         Wade Walker
                                         Vice President - Asset and Liability
                                           Management


                                     CAPSTEAD MORTGAGE CORPORATION


                                     By:  /s/ WADE WALKER
                                         --------------------------------------
                                         Wade Walker
                                         Vice President - Asset and Liability
                                           Management



ACCEPTED at Greenwich, Connecticut as
 of the date first above written.

GREENWICH CAPITAL MARKETS, INC.


By:  /s/ JOHN PAUL GRAHAM
    --------------------------------
     Name:  John Paul Graham
          --------------------------
     Position: Vice President
              ----------------------

<PAGE>   29

                                                                       EXHIBIT A

                       CAPSTEAD SECURITIES CORPORATION IV
                            (a Delaware corporation)

               Collateralized Mortgage Obligations, Series 199_-__

                                 Terms Agreement

                           Dated: 
                                  -------------------

Capstead Securities Corporation IV
CityPlace Center East
2711 N. Haskell Avenue
Suite 900
Dallas, Texas  75204

Re:  Underwriting Agreement dated ________ __, 199_
Title of Bonds:

The Bonds:  The Series 199_-__ Bonds (the "Series 199_-__ Bonds") shall be as
follows:

     (a)  Principal amount to be issued:  $
                                           -------------

     (b)  Public offering price:

     (c)  Purchase price:

               [plus accrued interest from                .]
                                           ---------------

     (d)  Payment Dates:

     (e)  Accrual Periods:

     (f)  Bond Rating:  It is a condition to the issuance of the Series 199_-__
Bonds that they be rated "___" by
                                 ---------------.

Section 2. Closing; Stand-Off Period:

     (a)  Closing date and location:

     (b)  Type of funds to be delivered by the Underwriters at the Closing:

     (c)  Expiration date of Stand-Off Period:

     (d)  Securities excluded from Stand-Off Period restrictions:

Section 3. Co-managers:



<PAGE>   30


Section 4. Purchase by the Underwriter(s):

     The Underwriter(s) agrees, subject to the terms and provisions herein and
of the above-referenced Underwriting Agreement (as modified and amended by the
terms hereof), which is incorporated herein in its entirety and made a part
hereof, to purchase [the entire aggregate principal amount of the Series 199_-__
Bonds in the Classes set forth in Section 1 hereof].

                                  [Name of Underwriter]


                                  By: 
                                      --------------------------------------
                                      Name:
                                           ---------------------------------
                                       Position:
                                                ----------------------------

                                  [Name of Underwriter]

                                  By: 
                                      --------------------------------------
                                      Name:
                                           ---------------------------------
                                       Position:
                                                ----------------------------


<PAGE>   31



Accepted:

CAPSTEAD SECURITIES CORPORATION IV


By: 
    --------------------------------------
    Name:
         ---------------------------------
    Position:
             ----------------------------


CAPSTEAD MORTGAGE CORPORATION


By: 
    --------------------------------------
    Name:
         ---------------------------------
    Position:
             ----------------------------


<PAGE>   1


                                                                  EXHIBIT 4.1


                      CAPSTEAD SECURITIES CORPORATION IV,

                                    Issuer,

                                      and

                   CHASE BANK OF TEXAS, NATIONAL ASSOCIATION

                                    Trustee


                                   INDENTURE


                         Dated as of September 1, 1998


                                  Relating to


                      COLLATERALIZED MORTGAGE OBLIGATIONS

                              (Issuable in Series)

                           (Senior/Subordinate Bonds)
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                               TABLE OF CONTENTS
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ARTICLE I - DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
         SECTION 1.1      General Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

         SECTION 1.2      RESERVED  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  26
         SECTION 1.3      Calculations Respecting Mortgage Loans Underlying Certificates  . . . . . . . . . . . . . .  26

ARTICLE II - THE BONDS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
         SECTION 2.1      Forms Generally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
         SECTION 2.2      Form of Trustee's Certificate of Authentication . . . . . . . . . . . . . . . . . . . . . .  28
         SECTION 2.3      Bonds Issuable in Series and Classes; General Provisions with
                          Respect to Principal and Interest Payments  . . . . . . . . . . . . . . . . . . . . . . . .  29
         SECTION 2.4      Denominations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 2.5      Execution, Authentication, Delivery and Dating  . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 2.6      Temporary Bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         SECTION 2.7      Registration, Registration of Transfer and Exchange . . . . . . . . . . . . . . . . . . . .  37
         SECTION 2.8      Mutilated, Destroyed, Lost or Stolen Bonds  . . . . . . . . . . . . . . . . . . . . . . . .  38
         SECTION 2.9      Payments of Principal and Interest  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  39
         SECTION 2.10     Persons Deemed Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 2.11     Cancellation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 2.12     Authentication and Delivery of Bonds  . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         SECTION 2.13     Book Entry Bonds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
         SECTION 2.14     Termination of Book Entry System  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  52
         SECTION 2.15     Restrictions on Transfer of Certain Classes of Bonds  . . . . . . . . . . . . . . . . . . .  53

ARTICLE III - COVENANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         SECTION 3.1      Payment of Bonds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         SECTION 3.2      Maintenance of Office or Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  56
         SECTION 3.3      Money for Bond Payments to Be Held in Trust . . . . . . . . . . . . . . . . . . . . . . . .  57
         SECTION 3.4      Corporate Existence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
         SECTION 3.5      Protection of Trust Estate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  59
         SECTION 3.6      Opinions as to Trust Estate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  60
         SECTION 3.7      Performance of Obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 3.8      Negative Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  61
         SECTION 3.9      Annual Statement as to Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  62
         SECTION 3.10     Contribution of Assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63
         SECTION 3.11     Successor Substituted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  63

ARTICLE IV - SATISFACTION AND DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 4.1      Satisfaction and Discharge of Indenture . . . . . . . . . . . . . . . . . . . . . . . . . .  64
         SECTION 4.2      Application of Trust Money  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  65
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         SECTION 4.3      REMIC Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  66
         SECTION 4.4      Reinstatement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  68

ARTICLE V - DEFAULTS AND REMEDIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69
         SECTION 5.1      Event of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  69
         SECTION 5.2      Acceleration of Maturity; Rescission and Annulment  . . . . . . . . . . . . . . . . . . . .  70
         SECTION 5.3      Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
         SECTION 5.4      Remedies  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  72
         SECTION 5.5      [Reserved]  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
         SECTION 5.6      Trustee May File Proofs of Claim  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  73
         SECTION 5.7      Trustee May Enforce Claims without Possession of Bonds  . . . . . . . . . . . . . . . . . .  73
         SECTION 5.8      Application of Money Collected  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  74
         SECTION 5.9      Limitation on Suits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  75
         SECTION 5.10     Restoration of Rights and Remedies  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 5.11     Rights and Remedies Cumulative  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 5.12     Delay or Omission Not Waiver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 5.13     Control by Bondholders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  76
         SECTION 5.14     Waiver of Past Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  77
         SECTION 5.15     Undertaking for Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
         SECTION 5.16     Waiver of Stay or Extension Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
         SECTION 5.17     Sale of Trust Estate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  78
         SECTION 5.18     Action on Bonds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  81
         SECTION 5.19     No Recourse to Other Trust Estates or Other Assets of the Issuer  . . . . . . . . . . . . .  81
         SECTION 5.20     Application of the TIA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  81

ARTICLE VI - THE TRUSTEE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
         SECTION 6.1      Duties of Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  82
         SECTION 6.2      Notice of Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  83
         SECTION 6.3      Rights of Trustee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  83
         SECTION 6.4      Not Responsible for Recitals or Issuance of Bonds . . . . . . . . . . . . . . . . . . . . .  84
         SECTION 6.5      May Hold Bonds  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         SECTION 6.6      Money Held in Trust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         SECTION 6.7      Compensation and Reimbursement  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  84
         SECTION 6.8      Disqualification; Conflicting Interests . . . . . . . . . . . . . . . . . . . . . . . . . .  86
         SECTION 6.9      Eligibility; Trustee's Capital and Surplus  . . . . . . . . . . . . . . . . . . . . . . . .  87
         SECTION 6.10     Resignation and Removal; Appointment of Successor . . . . . . . . . . . . . . . . . . . . .  87
         SECTION 6.11     Acceptance of Appointment by Successor  . . . . . . . . . . . . . . . . . . . . . . . . . .  88
         SECTION 6.12     Merger, Conversion, Consolidation or Succession to Business of Trustee  . . . . . . . . . .  89
         SECTION 6.13     Preferential Collection of Claims Against Issuer  . . . . . . . . . . . . . . . . . . . . .  89
         SECTION 6.14     Co-trustees and Separate Trustees . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  90
         SECTION 6.15     Authenticating Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  91
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         SECTION 6.16     Alternate Trustees  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  92

ARTICLE VII - BONDHOLDERS' LISTS AND REPORTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         SECTION 7.1      Issuer to Furnish Trustee Names and Addresses of Bondholders  . . . . . . . . . . . . . . .  93
         SECTION 7.2      Preservation of Information; Communications to Bondholders  . . . . . . . . . . . . . . . .  93
         SECTION 7.3      Reports by Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  93
         SECTION 7.4      Reports by Issuer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  94

ARTICLE VIII - ACCOUNTS, PAYMENTS OF INTEREST AND PRINCIPAL,
                          AND RELEASES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
         SECTION 8.1      Collection of Moneys  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
         SECTION 8.2      Collection Accounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  95
         SECTION 8.3      Reserved  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  98
         SECTION 8.4      Reserved  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  98
         SECTION 8.5      Reserved  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  98
         SECTION 8.6      General Provisions Regarding Pledged Accounts . . . . . . . . . . . . . . . . . . . . . . .  98
         SECTION 8.7      Reports by Trustee to Bondholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
         SECTION 8.8      Reports by Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
         SECTION 8.9      Reports by Independent Accountants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
         SECTION 8.10     Expense Fund  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
         SECTION 8.11     Substitution of Certificates with Eligible Substitute Certificates  . . . . . . . . . . . . 104

ARTICLE IX - SUPPLEMENTAL INDENTURES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
         SECTION 9.1      Supplemental Indentures without Consent of Bondholders  . . . . . . . . . . . . . . . . . . 106
         SECTION 9.2      Supplemental Indentures with Consent of Bondholders . . . . . . . . . . . . . . . . . . . . 108
         SECTION 9.3      Execution of Supplemental Indentures  . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
         SECTION 9.4      Effect of Supplemental Indentures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
         SECTION 9.5      Conformity with Trust Indenture Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
         SECTION 9.6      Reference in Bonds to Supplemental Indentures . . . . . . . . . . . . . . . . . . . . . . . 110
         SECTION 9.7      Amendments to Governing Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

ARTICLE X - REDEMPTION OF BONDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
         SECTION 10.1     Redemption  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
         SECTION 10.2     Form of Redemption Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
         SECTION 10.3     Bonds Payable on Payment Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
         SECTION 10.4     Right of Redemption by Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
         SECTION 10.5     Withdrawal of Requests  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
         SECTION 10.6     Redemption Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
         SECTION 10.7     Reserved  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
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         ARTICLE XI - MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
         SECTION 11.1     Compliance Certificates and Opinions  . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
         SECTION 11.2     Form of Documents Delivered to Trustee  . . . . . . . . . . . . . . . . . . . . . . . . . . 117
         SECTION 11.3     Acts of Bondholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
         SECTION 11.4     Notices, etc. to Trustee and Issuer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
         SECTION 11.5     Notices and Reports to Bondholders; Waiver of Notices . . . . . . . . . . . . . . . . . . . 120
         SECTION 11.6     Rules by Trustee and Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
         SECTION 11.7     Conflict with Trust Indenture Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
         SECTION 11.8     Effect of Headings and Table of Contents  . . . . . . . . . . . . . . . . . . . . . . . . . 120
         SECTION 11.9     Successors and Assigns  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
         SECTION 11.10    Severability  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
         SECTION 11.11    Benefits of Indenture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
         SECTION 11.12    Legal Holidays  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
         SECTION 11.13    GOVERNING LAW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
         SECTION 11.14    Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
         SECTION 11.15    Recording of Indenture  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
         SECTION 11.16    Corporate Obligation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
         SECTION 11.17    Inspection  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
         SECTION 11.18    Usury . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
         SECTION 11.19    REMIC Status  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
         SECTION 11.20    Reserved  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
         SECTION 11.21    Appointment of Tax Matters Partner  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
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         INDENTURE, dated as of September 1, 1998 (herein, as amended or
supplemented from time to time as permitted hereby, called this "Indenture"),
between Capstead Securities Corporation IV, a Delaware corporation (herein,
together with its permitted successors and assigns, called the "Issuer"), and
Chase Bank of Texas, National Association, as trustee (herein, together with
its permitted successors in the trusts hereunder, called the "Trustee").


                             PRELIMINARY STATEMENT

         The Issuer has duly authorized the execution and delivery of this
Indenture to provide for one or more series (a "Series") of its Collateralized
Mortgage Obligations ("Bonds"), issuable as provided in this Indenture.  Each
Series of such Bonds will be issued only under a separate supplement to this
Indenture duly executed and delivered by the Issuer and the Trustee and limited
to the amount therein described.   Each Series of Bonds shall be non-recourse
obligations of the Issuer and shall be limited in right of payment to amounts
available from the Trust Estate (as defined herein) relative thereto as
provided in this Indenture and the Issuer shall not otherwise be liable for
payments on the Bonds.  All covenants and agreements made by the Issuer herein
are for the benefit and security of the holders of the Bonds.  The Issuer is
entering into this Indenture, and the Trustee is accepting the trusts created
hereby, for good and valuable consideration, the receipt and sufficiency of
which are hereby acknowledged.

         All things necessary to make this Indenture a valid agreement of the
Issuer in accordance with its terms have been done.





                                      -1-
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                                   ARTICLE I

                                  DEFINITIONS

         SECTION 1.1      General Definitions.

         Except as otherwise specified or as the context may otherwise require,
the following terms have the respective meanings set forth below (as
supplemented, to the extent indicated below, by the provisions of the Series
Supplement for a particular Series) for all purposes of this Indenture, and the
definitions of such terms are applicable to the singular as well as to the
plural forms of such terms and to the masculine as well as to the feminine and
neuter genders of such terms.  Whenever any reference is made to an amount the
determination or calculation of which is governed by Section 1.3, the
provisions of Section 1.3 shall be applicable to such determination or
calculation, whether or not reference is specifically made to Section 1.3,
unless some other method of calculation or determination is expressly specified
in the particular provision.   Whenever reference is made herein to an Event of
Default or Default necessitating or involving action by the Trustee, such
reference shall be construed to refer only to an Event of Default or Default of
which the Trustee is deemed to have notice or knowledge pursuant to Section
6.1(d).  All other terms used herein which are defined in the Trust Indenture
Act (as hereinafter defined), either directly or by reference therein, have the
meanings assigned to them therein.

         "Accountant":  A Person engaged in the practice of accounting who
(except when this Indenture provides that an Accountant must be Independent)
may be employed by or affiliated with the Issuer or an Affiliate of the Issuer.

         "Accrual Date":  With respect to any Series, the date upon which
interest begins accruing on the Bonds of such Series, as specified in such
Bonds and the related Series Supplement.

         "Act":  With respect to any Bondholder, as defined in Section 11.3.

         "Accrued Bond Interest":  With respect to any Bond of a Series, other
than a Principal Only Bond, on any Interest Payment Date an amount equal to the
interest accrued on the Imputed Principal Balance or Notional Amount, as
applicable, thereof prior to such Interest Payment Date during the related
Interest Accrual Period at the applicable Bond Interest Rate, less such Bond's
share of any Net Interest Shortfalls and the interest portion of any Excess
Losses and Realized Losses incurred on the mortgage loans underlying the
Conventional Certificates securing such Series in the calendar month preceding
the month in which such Interest Payment Date occurs and which are then
allocable to the Class of such Bonds, in accordance with the provisions of the
related Series Supplement.  Interest accrued on a Bond for the purposes of this
definition shall be calculated on the basis of a 360-day year consisting of
twelve months of thirty days each.

         "Administrator":  As to each  Series and at any relevant time, the
Person then acting as administrator under the Pooling and Administration
Agreement applicable to such Series.





                                      -2-
<PAGE>   8
         "Advice":  With respect to an Uncertificated Certificate, an
instrument or instruments evidencing and acknowledging the transfer or pledge
of such Uncertificated Certificate to the Trustee, issued by one or more
entities maintaining books on which transfers or pledges of such Uncertificated
Certificate are recorded in accordance with applicable statutes and
regulations.

         "Affiliate": of any specified Person:  Any other Person controlling or
controlled by or under common control with such specified Person.  For the
purposes of this definition, "control" when used with respect to any specified
Person means the power to direct the management and policies of such Person,
directly or indirectly, whether through the ownership of voting securities, by
contract or otherwise; and the terms "controlling" and "controlled" have
meanings correlative to the foregoing.

         "Agent":  Any Bond Registrar, Paying Agent or Authenticating Agent.

         "Aggregate Certificate Balance":  With respect to the Certificates
securing a Series, the aggregate of the Certificate Principal Balances for all
such Certificates as of the date of determination.

         "Aggregate Current Principal Amount":  With respect to any Series, the
sum of the Class Current Principal Amounts of all Classes of Bonds of such
Series Outstanding at the time of determination.

         "Aggregate Imputed Principal Balance":  With respect to any Series,
the sum of the Class Imputed Principal Balances of all Classes of Bonds of such
Series Outstanding at the time of determination.

         "Assumed Reinvestment Rate":  With respect to any Series for any
period, the respective percentage or percentages per annum, if any, specified
in the related Series Supplement, compounded monthly unless otherwise specified
in the related Series Supplement.

         "Authenticating Agent":  With respect to any particular Series, the
Person, if any, named as Authenticating Agent for such Series in the related
Series Supplement or appointed by the Trustee at the request of the Issuer
pursuant to Section 6.15, until any successor Authenticating Agent for such
Series is named, and thereafter "Authenticating Agent" shall mean such
successor.

         "Available Funds":  With respect to a Series of Bonds, as defined in
the Series Supplement relative thereto.

         "Bankruptcy Coverage Termination Date":  With respect to any relevant
Series of Bonds, the earlier of (a) the Payment Date on which the amount of
Bankruptcy Losses incurred on the mortgage loans underlying the Conventional
Certificates securing such Series of Bonds and not previously deducted from the
Bankruptcy Loss Amount relative to such Series of Bonds equals or exceeds such
Bankruptcy Loss Amount on such Payment Date, and (b) the Cross-over Date
relative to such Series of Bonds.





                                      -3-
<PAGE>   9
         "Bankruptcy Loss":  Unless otherwise specified in the related Series
Supplement, a loss incurred on a mortgage loan underlying a Conventional
Certificate securing a Series of Bonds as a consequence of a Debt Service
Reduction or a Deficient Valuation.

         "Bankruptcy Loss Amount":  With respect to any relevant Series of
Bonds, the amount specified in the related Series Supplement, as adjusted from
time to time in accordance with such Series Supplement.

         "Beneficial Owner":  With respect to a Book Entry Bond, the Person who
is the beneficial owner of such Bond as reflected on the books of the Clearing
Agency for the Class or on the books of a Person maintaining an account with
such Clearing Agency (directly or as an indirect participant, in accordance
with the rules of such Clearing Agency).

         "Board of Directors":  Either the Board of Directors of the Issuer or
the Executive Committee or Finance Committee, if any, of that Board.

         "Bondholder" or "Holder":  The Person in whose name a Bond is
registered in the Bond Register.

         "Bond Interest Rate":  With respect to any Series or Class, the annual
rate at which interest accrues on the Bonds of such Series or Class, as
specified in the related Series Supplement.

         "Bond Redemption Date":  With respect to a Series of Bonds, as defined
in the Series Supplement relative thereto.

         "Bond Register" and "Bond Registrar":  As defined in Section 2.7.

         "Bonds":  Any bonds authorized by, and authenticated and delivered
under, this Indenture.

         "Book Entry Bonds":  As specified in the related Series Supplement,
Bonds of any Class which are issued in book entry form and held in the form of
a single certificate issued in the name of a Clearing Agency registered with
the Commission.

         "Book Entry Nominee":  As defined in Section 2.15.

         "Book Entry Termination":  The time at which the book entry
registration of the Book Entry Bonds shall terminate, as specified in Section
2.14.

         "Business Day":  Any day that is not a Saturday, Sunday or other day
on which commercial banking institutions in the City of New York or in the city
in which the Corporate Trust Office is located are authorized or obligated by
law or executive order to be closed, or as otherwise set forth in the related
Series Supplement.





                                      -4-
<PAGE>   10
         "Certificate":  A Conventional Certificate which is Granted to the
Trustee under this Indenture and the related Series Supplement as security for
a particular Series. The term "Certificates" means all of the Conventional
Certificates (if any) Granted to the Trustee under this Indenture and the
related Series Supplement as security for a particular Series.  The term
"outstanding Certificates" as of any date means all of the Certificates other
than any Certificates which have been fully paid as of such date.

         "Certificate Account":  With respect to a Series of Bonds
collateralized by Conventional Certificates, the account designated as the
Certificate Account in respect thereof in the related Pooling and
Administration Agreement.

         "Certificate Principal Balance":  As of the date of any determination
with respect to any Certificate, the aggregate of the Scheduled Principal
Balances of the mortgage loans underlying such Certificate at such time.

         "Certificate Rate":  With respect to any Certificate, the pass-through
rate of interest payable to the holder thereof as indicated thereon.  In the
event that any Certificate provides for a pass-through rate of interest which
is calculated on a mortgage loan by mortgage loan basis (equal as to each such
mortgage loan to the interest rate borne thereby less the servicing,
Certificate Trustee and other fees specified in such Certificate) the
Certificate Rate for such Certificate at the time of any determination shall be
the weighted average of such individual mortgage loan coupon rates less such
servicing, certificate trustee and other fees, as applicable.

         "Certificate Trustee":  With respect to any Series of Bonds
collateralized by Conventional Certificates, the entity designated as Trustee
under the related Pooling and Administration Agreement.

         "Class":  With respect to any Series, each subdivision of the Bonds
created pursuant to the related Series Supplement, such subdivisions having the
characteristics and designations set forth in such related Series Supplement.

         "Class Current Principal Balance":  With respect to any Class of Bonds
of any Series, and as of any date of determination, the sum of the Current
Principal Amounts of all Outstanding Bonds of such Class at such date.

         "Class Imputed Principal Balance":  With respect to any Class of Bonds
of a Series as of any date of determination, the sum of the Imputed Principal
Balance of all Outstanding Bonds of such Class at such date.

         "Class Original Principal Amount":  With respect to any Class of Bonds
of a Series, the aggregate Original Principal Amount of the Bonds of such Class
on the date of issuance thereof, as specified in the related Series Supplement.





                                      -5-
<PAGE>   11
         "Class Redemption Amount":  With respect to any Class or Classes of
Bonds of any Series, the amount or amounts described in Section 10.4(b) hereof
and determined in accordance with the provisions of the applicable Series
Supplement.

         "Clearing Agency":  An organization registered as a "clearing agency"
pursuant to Section 17A of the Securities and Exchange Act of 1934, as amended,
and the regulations of the Commission thereunder.  The Clearing Agency for any
Class of Book Entry Bonds will be specified in the related Series Supplement.

         "Clearing Agency Participants":  The entities for whom the Clearing
Agency will maintain book entry records of ownership and transfer of Book Entry
Bonds, which may include securities brokers and dealers, banks and trust
companies and clearing corporations and certain other organizations.

         "Closing Date":  With respect to any Series, the date on which Bonds
of such Series are first executed, authenticated and delivered.

         "Code":  The Internal Revenue Code of 1986, as it may be amended from
time to time and as it may be interpreted under regulations promulgated by the
Treasury Department and published rulings issued by the United States Internal
Revenue Service from time to time.

         "COFI":  The per annum rate equal to the monthly weighted average cost
of funds for member institutions of the Eleventh District of the Federal Home
Loan Bank System, as published by the Federal Home Loan Bank of San Francisco.

         "COFI Bond":  With respect to any relevant Series, any Bond thereof
the interest rate on which is determined by reference to COFI, as specified in
the related Series Supplement.

         "Collateral Group":  With respect to any Series, a group of one or
more outstanding Certificates and/or any other assets which may be included in
the Trust Estate securing such Series which have the characteristics described
in the related Series Supplement.

         "Collection Account":  With respect to any Series, the trust account
or accounts created and maintained pursuant to Section 8.2, which account shall
be an Eligible Account.

         "Commission":  The Securities and Exchange Commission, as from time to
time constituted, created under the Securities Exchange Act of 1934, or if at
any time such Commission is not existing and performing the duties now assigned
to it under the Trust Indenture Act, then the body performing such duties at
such time under the Trust Indenture Act or similar legislation replacing the
Trust Indenture Act.

         "Compound Interest Bond":  A Bond on which interest accrues and is
added to the principal of such Bond on each related Interest Payment Date
through the Initial Interest Payment Date for





                                      -6-
<PAGE>   12
such Bond, but with respect to which neither interest nor principal is due or
payable until such Initial Interest Payment Date.

         "Conventional Certificate":  A conventional mortgage pass through
certificate administered by the Administrator for a particular Series (or one
of the Administrators if there is more than one for a particular Series) and
representing a fractional undivided interest in a pool of conventional mortgage
loans secured by single family (one-to-four unit) or multifamily residences,
which certificate is Granted to the Trustee under this Indenture and the
related Series Supplement as security for such Series. The term "outstanding
Conventional Certificates" as of any date means the Conventional Certificates
other than the Conventional Certificates which have been fully paid as of such
date.

         "Conventional Certificate Prepayment Reserve Amount":  With respect to
the Straight Pass-Through Conventional Certificates, if any, securing a Series
at any time, an amount equal to interest for such period of time, if any, as
may be specified in the related Series Supplement, at the respective
Certificate Rates for such Conventional Certificates, on their respective
Certificate Principal Balances as of the date of determination.

         "Corporate Trust Office":  The principal corporate trust office of the
Trustee located at [ ]or at such other address as the Trustee may designate 
from time to time by notice to the Bondholders and the Issuer, or the principal
corporate trust office of any successor Trustee.

         "Cross-over Date":  With respect to a Series of Bonds, unless
otherwise specified in the Series Supplement relative thereto, the Payment Date
on which the Class Imputed Principal Balances of all Classes of Junior Bonds of
such Series have been reduced to zero.

         "Current Principal Amount":  With respect to any Bond of any Series as
of any date of determination, the sum of:

                 (a)      the Original Principal Amount of such Bond, and

                 (b)      if such Bond is a Compound Interest Bond, the
         aggregate amount of interest, if any, accrued on such Bond and added
         to the principal thereof on each Interest Payment Date for such Series
         through the Interest Payment Date immediately preceding such date of
         determination,

reduced by all prior payments, if any, made with respect to principal
(including payments with respect to amounts previously added to principal as
described in clause (b) above) of such Bond.

         "Debt Service Reduction":  With respect to a mortgage loan underlying
the Conventional Certificates securing a Series, as defined in the related
Pooling and Administration Agreement.





                                      -7-
<PAGE>   13
         "Debt Service Requirement":  Except as otherwise provided in the
related Series Supplement, with respect to a particular Payment Date for a
Series, the Available Funds.

         "Deceased Holder Bonds":  Bonds as to which redemption is requested
pursuant to Section 10.4 by the personal representative, surviving joint tenant
or surviving tenant by the entirety of a deceased Holder.

         "Default":  Any occurrence which is, or with the giving of notice or
the lapse of time or both would become, an Event of Default.

         "Deficient Valuation":  With respect to a mortgage loan underlying any
Conventional Certificate securing a Series of Bonds, as defined in the related
Pooling and Administration Agreement.

         "Definitive Bonds":  Bonds other than Book Entry Bonds.

         "Disqualified Organization": (i) the United States, any State or
political subdivision hereof, any foreign government, any international
organization, or any agency or instrumentality of any of the foregoing, (ii)
any organization (other than a farmer's cooperative described in Section 521 of
the Code) that is exempt from the tax imposed by Chapter 1 of the Code and not
subject to the tax imposed by Section 511 of the Code; (iii) any rural electric
or telephone cooperative described in Section 1381(a)(2)(C) of the Code; or
(iv) any other person whose holding of the residual interests of the REMIC may
cause the REMIC to incur a liability for any tax imposed under the Code that
would not otherwise be imposed but for the purchase or transfer of the residual
interests to such person.  For purposes of clause (i) of the previous sentence,
a corporation shall not be treated as an instrumentality of the United States
or of any State or political subdivision thereof, if (i) all of the activities
of such corporation are subject to the tax imposed by Chapter 1 of the Code,
and (ii) a majority of the board of directors of such corporation is not
selected by the United States or any State or political subdivision (except
that this clause (ii) shall not apply to the Federal Home Loan Mortgage
Corporation).

         "Distribution":  With respect to any Certificate, the amount of the
monthly remittance payable to the holder of such Certificate in accordance with
its terms.

         "Distribution Date":  The date on which a particular Distribution is
payable to the holder of the related Certificate in accordance with its terms,
as more particularly described in the related Series Supplement.

         "Eligible Account":  With respect to any Series, as defined in the
related Pooling and Administration Agreement.

         "Eligible Investments":  Except to the extent expanded or restricted
by the Series Supplement for the Series of which such obligations or securities
form part of the Trust Estate, each of the following:





                                      -8-
<PAGE>   14
                 (i)      obligations of, or guaranteed as to principal and
         interest by, the United States or any agency or instrumentality
         thereof when such obligations are backed by the full faith and credit
         of the United States;

                 (ii)     purchase agreements on obligations of, or guaranteed
         as to principal and interest by, the United States or any agency or
         instrumentality thereof when such obligations are backed by the full
         faith and credit of the United States, provided that the unsecured
         obligations of the party agreeing to repurchase such obligations are
         at the time of purchase rated by the Rating Agency in its highest
         long-term rating category;

                 (iii)    certificates of deposit, time deposits and bankers
         acceptances of any United States bank or trust company incorporated
         under the laws of the United States or any state, including the
         Trustee; provided that the debt obligations of such bank or trust
         company (or, in the case of a subsidiary in a bank holding system,
         debt obligations of the bank holding company) at the date of the
         acquisition thereof have been rated by the Rating Agency in its
         highest long-term rating category;

                 (iv)     pooled or common trust funds of the Trustee, acting
         as trustee and custodian and not in its commercial capacity and
         representing ownership solely of the investments listed in clauses (i)
         through (iii) above which have been approved by any Rating Agency
         requesting to review such funds; any pooled or common trust funds
         which provide for demand withdrawals shall be conclusively deemed to
         satisfy any maturity requirements for Eligible Investments set forth
         in this Indenture;

                 (v)      deposits, including deposits with the Trustee, which
         are fully insured by the Bank Insurance Fund or the Savings
         Association Insurance Fund of the FDIC, as the case may be;

                 (vi)     participation certificates and senior debt
         obligations issued by FHLMC;

                 (vii)    commercial paper of any corporation incorporated
         under the laws of the United States or any state thereof, including
         corporate affiliates of the Trustee, which has an original maturity of
         not more than 365 days and which, at the time of purchase, is rated by
         the Rating Agency in its highest short-term rating category;

                 (viii)   debt obligations rated by the Rating Agency at the
         time at which the investment is made in its highest long-term rating
         category  (or those investments specified in (iii) above with
         depository institutions which have debt obligations rated by the
         Rating Agency in its highest long-term rating category);

                 (ix)     money market funds which, at the time of purchase,
         are rated AAA/m by Standard & Poor's and by the Rating Agency (or, if
         the Rating Agency is Duff & Phelps Credit Rating Co., by Moody's
         Investors Service, Inc.) in its highest long-term rating category, and
         which funds invest only in other Eligible Investments, any such money
         market





                                      -9-
<PAGE>   15
         funds which provide for demand withdrawals being conclusively deemed
         to satisfy any maturity requirements for Eligible Investments set
         forth in this Indenture; or

                 (x)      any other demand, money market or time deposit
         obligation, security or investment which is acceptable to each of the
         Rating Agencies rating such obligation, security or investment.

         provided, however, that no instrument or security shall be an Eligible
         Investment if such instrument or security evidences either (a) a right
         to receive only interest payments with respect to the obligations
         underlying such instrument, or (b) both principal and interest
         payments derived from obligations underlying such instrument and the
         interest and principal payments with respect to such instrument
         provide a yield to maturity greater than 120% of the yield to maturity
         at par of the underlying obligations; and provided, further, that if
         any such instrument is redeemable by the issuer thereof, it shall not
         be redeemable at less than par and if redeemable by any party, such
         redemption must be without penalty or discount.

If the Bonds are rated by more than one Rating Agency, each reference in this
definition of "Eligible Investments" to the Rating Agency shall be construed,
in the case of each of subparagraphs (ii), (iii), (iv), (vii), (viii), (ix) and
(x), as a reference to each Rating Agency rating the Bonds that has assigned a
rating to the type of Eligible Investments referred to in such subparagraph.

         "Eligible Substitute Certificate":  A Certificate Granted pursuant to
Section 8.11 for one or more Certificates previously Granted to the Trustee as
collateral for a Series of Bonds, which substituted Certificate, unless
otherwise specified in the related Series Supplement (i) is a Certificate
issued by the same entity (i.e., sponsor of conventional pass-through
certificates) which issued the Certificate for which it is substituted; (ii)
has an annual interest rate (pass-through rate) which is not more than 1%
greater or not more than 1% less than the interest rate of the Certificate for
which it is substituted; (iii) has scheduled Distributions for each
Distribution Date  subsequent to the Distribution Date   on or preceding which
such substitution occurs which will not cause any Class of Bonds of such Series
to be paid in full later than the Stated Maturity of such Class of Bonds; (iv)
has a maturity date not earlier than one year prior to, and in no event later
than, the maturity date of the Certificate for which it is substituted; and (v)
the outstanding Certificate Principal Balance of which is at least equal to the
outstanding Certificate Principal Balance of the Certificate for which it is
substituted.

         "ERISA":  The Employee Retirement Income Security Act of 1974, as
amended.

         "ERISA Prohibited Bonds":  With respect to a Series of Bonds, the
Classes of Bonds designated as such in the related Series Supplement.

         "ERISA Restricted Bonds":  With respect to a Series of Bonds, the
Classes of Bonds designated as such in the related Series Supplement.

         "Event of Default":  The meaning specified in Section 5.1.





                                      -10-
<PAGE>   16
         "Excess Bankruptcy Loss":  With respect to a Series of Bonds and any
Payment Date in respect thereof on which a Bankruptcy Loss or Bankruptcy Losses
is or are allocable to the Bonds of such Series, the amount, if any, by which
such Bankruptcy Loss or Bankruptcy Losses exceeds or exceed the applicable
Bankruptcy Loss Amount (excluding the principal portion of any Debt Service
Reductions that would otherwise be included in such excess amount).

         "Excess Fraud Loss":  With respect to a Series of Bonds and any
Payment Date in respect thereof on which a Fraud Loss or Fraud Losses is or are
allocable to the Bonds of such Series, the amount, if any, by which such Fraud
Loss or Fraud Losses exceeds or exceed the applicable Fraud Loss Amount.

         "Excess Losses":  With respect to a Series of Bonds and a Payment
Date, an amount equal to the sum of Excess Bankruptcy Losses (other than Debt
Service Reductions), Excess Fraud Losses and Excess Special Hazard Losses.

         "Excess Special Hazard Loss":  With respect to a Series of Bonds and
any Payment Date in respect thereof on which a Special Hazard Loss is allocable
to the Bonds of such Series, the amount, if any, by which such Special Hazard
Loss or Special Hazard Losses exceeds or exceed the applicable Special Hazard
Loss Amount.

         "Expense Fund":  With respect to any Series, the account, if any,
required to be created and maintained with the Trustee pursuant to Section 8.1
which account shall be an Eligible Account.

         "Expense Reserve Amount":  With respect to any Series, the amount, if
any, specified in the related Series Supplement.

         "FHLMC":  Federal Home Loan Mortgage Corporation, a corporate
instrumentality of the United States created and existing under Title III of
the Emergency Home Finance Act of 1970, as amended, or any successor thereto.

         "First SAB Paydown Date":  With respect to a Class of SAB Bonds, the
first Principal Payment Date for such Class as specified in the related Series
Supplement.

         "FNMA":  Federal National Mortgage Association, a federally chartered
and privately owned corporation organized and existing under the Federal
National Mortgage Association Charter Act, or any successor thereto.

         "Formula Rate Bond":  A Bond, if any, designated as such in a Series
Supplement.

         "Fraud Loss":  With respect to any Series and any mortgage loan
underlying a Conventional Certificate collateralizing such Series, a loss on
such Mortgage Loan by reason of a default arising from fraud, dishonesty or
misrepresentation in connection with such mortgage loan, including loss by
reason of the denial of coverage under any related primary mortgage insurance
policy because of such fraud, dishonesty or misrepresentation.





                                      -11-
<PAGE>   17
         "Fraud Loss Amount":  With respect to any relevant Series of Bonds,
the amount specified in the related Series Supplement, as adjusted from time to
time in accordance with such Series Supplement.

         "Fraud Loss Coverage Termination Date":  With respect to any relevant
Series of Bonds, the earlier of (a) the Payment Date on which the amount of
Fraud Losses incurred on the mortgage loans underlying the Conventional
Certificates securing such Series of Bonds and not previously deducted from the
Fraud Loss Amount relative to such Series of Bonds, equals or exceeds the Fraud
Loss Amount on such Payment Date, and (b) the Cross-over Date relative to such
Series of Bonds.

         "Future Value":  With respect to any cash or Eligible Investment held
or to be deposited in a Pledged Account for a Series, as of any particular date
subsequent to the date of determination, the sum of such cash or Eligible
Investment and the investment income which can be earned thereon to such
subsequent date, determined in accordance with such assumptions or requirements
as may be specified in the related Series Supplement.

         "GNMA":  The Government National Mortgage Association, a wholly owned
corporate instrumentality of the United States within the Department of Housing
and Urban Development, or any successor thereto.

         "Grant":  To grant, bargain, sell, warrant, alienate, remise, release,
convey, assign, transfer, mortgage, pledge, create and grant a security
interest in and right of set-off against, deposit, set over and confirm.  A
Grant of a Certificate or of any other instrument shall include all rights,
powers and options (but none of the obligations) of the Granting party
thereunder, including without limitation the immediate and continuing right to
claim for, collect, receive and give receipts for principal and interest
payments in respect of such Certificate and all other moneys payable
thereunder, to give and receive notices and other communications, to make
waivers or other agreements, to exercise all rights and options, to bring
Proceedings in the name of the Granting party or otherwise, and generally to do
and receive anything which the Granting party is or may be entitled to do or
receive thereunder or with respect thereto.

         "Guarantor":  The party to a Guaranty Agreement with the Issuer and
the Trustee.

         "Guaranty Agreement":  As to any Series or any Class of Bonds of any
Series which is directly insured, guaranteed or otherwise backed, the insurance
policy, surety bond, letter of credit or similar agreement pursuant to which
such insurance, guaranty or other backing is furnished.

         "Highest Lawful Rate":  As defined in Section 11.18.

         "Highest Priority Junior Class":  At any time and with respect to any
Series, that Class of Junior Bonds having (a) the then highest priority of
payment of principal under the related Series Supplement (determined without
regard to any acceleration pursuant to Article V) and (b) a Class Imputed
Principal Balance greater than zero.





                                      -12-
<PAGE>   18
         "Holder":  A Bondholder.

         "Imputed Principal Balance":  With respect to a Bond of a Series as of
any date of determination, the amount equal to the lesser of (a) the Current
Principal Amount of such Bond at such date or, in the case of an Interest Only
Bond, the Notional Amount thereof at such date, and (b) the Original Principal
Amount of such Bond or, in the case of an Interest Only Bond, the Notional
Amount thereof on the date of issuance thereof, plus, in the case of a Compound
Interest Bond, the aggregate amount of interest, if any, accrued on such Bond
and added to the principal thereof on each Interest Payment Date for such
Series through the Interest Payment Date immediately preceding such date of
determination, less the sum of (i) all amounts paid on account of principal on
such Bond, or, in the case of an Interest Only Bond, applied in reduction of
the Notional Amount thereof, prior to such date of determination; (ii) all
Realized Losses allocated to such Bond, or, in the case of an Interest Only
Bond, applied in reduction of the Notional Amount thereof, prior to such date
of determination which remain unpaid on such date of determination; and (iii)
the portion of any  Junior Bond Writedown Amount allocated to such Bond prior
to such date of determination.

         "Indenture" or "this Indenture":  This instrument as originally
executed and, if from time to time supplemented or amended by one or more
indentures supplemental hereto entered into pursuant to the applicable
provisions hereof, as so supplemented or amended.  All references in this
instrument to designated "Articles", "Sections", "Subsections" and other
subdivisions are to the designated Articles, Sections, Subsections and other
subdivisions of this instrument as originally executed.  The words "herein",
"hereof", "hereunder" and other words of similar import refer to this Indenture
as a whole and not to any particular Article, Section, Subsection or other
subdivision.

         "Independent":  When used with respect to any specified Person means
such a Person who (1) is in fact independent of the Issuer and any other
obligor upon the Bonds, (2) does not have any direct financial interest or any
material indirect financial interest in the Issuer or in any such other obligor
or in an Affiliate of the Issuer or such other obligor, and (3) is not
connected with the Issuer or any such other obligor as an officer, employee,
promoter, underwriter, trustee, partner, director or person performing similar
functions.  Whenever it is herein provided that any Independent Person's
opinion or certificate shall be furnished to the Trustee, such Person shall be
appointed by an Issuer Order and such opinion or certificate shall state that
the signer has read this definition and that the signer is Independent within
the meaning thereof.

         "Index":  With respect to a Series of Bonds a Class or Classes of
which are Variable Rate Bonds the interest rate on which is determined from
time to time by reference to a predetermined index, as defined in the related
Series Supplement.

         "Individual Bond":  With respect to a Class of Bonds of a Series, as
defined in the related Series Supplement.

         "Initial Interest Payment Date":  With respect to any Class of
Compound Interest Bonds of any Series, the Principal Payment Date on which the
outstanding principal of the Class of Bonds of such Series whose final
installment of principal has the latest Stated Maturity of principal prior to





                                      -13-
<PAGE>   19
the Stated Maturity of the final installment of principal of such Class of
Compound Interest Bonds is paid in full.

         "Interest Accrual Period":  With respect to any Payment Date or
Redemption Date  for a Series of Bonds, the period specified in the related
Series Supplement for which interest accrued on the Outstanding Bonds of such
Series, or a certain Class thereof, as specified in the related Series
Supplement, during such period is to be paid or, if applicable, deferred and
added to principal, including, unless expressly stated to the contrary or the
context otherwise requires, each Variable Rate Interest Accrual Period.

         "Interest Delay Period":  With respect to any Class of Bonds of a
Series, the length of time, if any, between the end of each Interest Accrual
Period and the day immediately preceding the corresponding Interest Payment
Date.

         "Interest Determination Date":  With respect to any Class or Classes
of Variable Rate Bonds of a Series, the date specified in the related Series
Supplement on which the Bond Interest Rate at which interest shall accrue on
such Variable Rate Bonds during the next succeeding Variable Rate Interest
Accrual Period is determined.

         "Interest Only Bond":  A Bond of a Series which is entitled only to
payments of interest thereon on the basis of the Notional Amount thereof, and
on which no principal is payable, as more particularly described in the related
Series Supplement.

         "Interest Payment Date":  As to any Series or Class, any date
specified in the related Series Supplement as one of the fixed dates on which
an installment of interest on the Bonds of such Series or Class is due and
payable to the extent of Available Funds on such date.

         "Interest Shortfall":  Unless otherwise specified in the related
Series Supplement, with respect to a mortgage loan underlying a Conventional
Certificate securing a Series of Bonds, as defined in the related Pooling and
Administration Agreement.

         "Issuer":  CMC Securities Corporation III, a Delaware corporation,
until a successor Person shall have become the Issuer pursuant to the
applicable provisions of this Indenture, and thereafter "Issuer" shall mean
such successor Person.

         "Issuer Order" and "Issuer Request":  A written order or request
signed in the name of the Issuer by its Chairman, President, or a Vice
President, and by its Treasurer, an Assistant Treasurer, Controller, an
Assistant Controller, Secretary, or an Assistant Secretary, and delivered to
the Trustee.

         "Issuer Resolution":  A copy of a resolution certified by the
Chairman, President, any Vice President, Secretary or any Assistant Secretary
of the Issuer to have been duly adopted by the Board of Directors and to be in
full force and effect on the date of such certification and delivered to the
Trustee.





                                      -14-
<PAGE>   20
         "Junior Bond":  With respect to a Series of Bonds, a Bond of a Class
of such Series which Class is subordinated in right of payment of principal
and/or interest to the Classes of Senior Bonds of such Series, as more
particularly described in the related Series Supplement.

         "Junior Bond Writedown Amount":  Except as otherwise specified in the
related Series Supplement, with respect to any Class of Junior Bonds of a
Series and a Payment Date, the amount by which the sum of the Class Imputed
Principal Balances of all Classes of Bonds of such Series, after reducing such
Class Imputed Principal Balances on such Payment Date by payments of principal
then made thereon and the allocation of Realized Losses then allocable thereto,
exceeds the related Pool Scheduled Principal Balance of the Mortgage Loans
underlying the Conventional Certificates collateralizing such Series of Bonds.

         "Junior Imputed Principal Balance":  With respect to a Series of Bonds
and a Payment Date, the amount equal to the sum of the Class Imputed Principal
Balances of the Junior Bonds outstanding at such time.

         "Letter Agreement":  With respect to a Class of Book Entry Bonds, the
letter agreement among the Issuer, the Trustee and the Clearing Agency
governing book entry transfers of, and certain other matters with respect to,
such Book Entry Bonds and attached as an exhibit to the related Series
Supplement.

         "LIBOR":  As set forth in the related Series Supplement for any Class
of Variable Rate Bonds the Bond Interest Rate on which is determined by
reference to the London Interbank Offered Rate from time to time, as determined
in the manner specified in the related Series Supplement.

         "LIBOR Bond":  With respect to any relevant Series, any Bond thereof
the interest rate on which is determined by reference to LIBOR, as specified in
the related Series Supplement.

         "LIBOR Interest Accrual Period":  With respect to any Class of LIBOR
Bonds of a Series, the interest accrual period in respect thereof, as specified
in the related Series Supplement.

         "Liquidated Mortgage Loan":  With respect to a Series of Bonds
collateralized by Conventional Certificates, as defined in the related Pooling
and Administration Agreement.

         "Liquidation Proceeds":  With respect to a Series of Bonds
collateralized by Conventional Certificates, as defined in the related Pooling
and Administration Agreement.

         "Manager":  The entity, if any, specified in the related Series
Supplement which shall perform certain administrative functions with respect to
a Series of the Bonds.

         "Maturity":  With respect to any Bond, the date on which the entire
unpaid principal amount of such Bond becomes due and payable as therein or
herein provided, whether at the Stated Maturity of the final installment of
such principal or by declaration of acceleration, call for redemption or
otherwise.





                                      -15-
<PAGE>   21
         "Maximum Bond Interest Rate Assumption":  With respect to any relevant
Series and any relevant Class or Classes of Variable Rate Bonds, if any, for
any Variable Rate Interest Accrual Period for which the applicable interest
rate on such Variable Rate Bonds has not yet been determined in accordance with
Section 2.3, an assumed interest rate on such Bonds as specified in the related
Series Supplement.

         "Maximum Variable Interest Rate":  With respect to any relevant Series
and any relevant Class or Classes of Variable Rate Bonds thereof, the Bond
Interest Rate specified as such for any Class of Variable Rate Bonds in the
related Series Supplement.

         "Month of Closing":  With respect to any Series, the month in which
the Closing Date occurs.

         "Monthly Payment":  With respect to a mortgage loan underlying a
Conventional Certificate, as defined in the related Pooling and Administration
Agreement.

         "Mortgaged Properties":  Unless otherwise specified in the related
Series Supplement, as to any Series, the properties securing the mortgage notes
evidencing the mortgage loans pooled to form the Conventional Certificates
securing such Series.

         "Net Interest Shortfall":  Unless otherwise defined in the related
Series Supplement, with respect to any Series and any Payment Date in respect
thereof, the amount defined as such in the related Pooling and Administration
Agreement by reference to the immediately preceding Distribution Date.

         "Net Liquidation Proceeds":  With respect to a Series of Bonds
collateralized by Conventional Certificates, as defined in the related Pooling
and Administration Agreement.

         "New York Agent":  With respect to each Series, the agent initially
appointed by the Issuer for purposes of presentation and surrender of Bonds for
registration of transfer and exchange and for notices and demands to or upon
the Issuer pursuant to Section 3.2, as specified in the related Series
Supplement.

         "New York Office":  With respect to each Series, the office initially
appointed by the Issuer for purposes of presentation and surrender of Bonds for
registration of transfer and exchange and for notices and demands to or upon
the Issuer pursuant to Section 3.2, as specified in the related Series
Supplement.

         "Non-Disqualification Opinion":  Except as otherwise provided in the
related Series Supplement, with respect to any action proposed to be taken
under this Indenture where an election to treat the Trust Estate securing a
Series (or any portion thereof) and any other assets set forth in such election
as one or more REMICs has been made or will be made, an Opinion of Counsel to
the effect that the taking of such action will not cause a REMIC Loss.





                                      -16-
<PAGE>   22
         "Non-permitted Foreign Holder":  As defined in Section 2.15.

         "Non-U.S. Person":  An individual, corporation, partnership or other
person other than:  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.

         "Notional Amount":  With respect to an Interest Only Bond of a Series,
the notional amount forming the basis of the determination of interest accrued
on such Bond, as more particularly described in the related Series Supplement.

         "Officers' Certificate":  A Certificate signed by the Chairman, the
President or a Vice President, and by the Treasurer, an Assistant Treasurer,
the Controller, an Assistant Controller, the Secretary or an Assistant
Secretary of the Issuer or of such other Person as is delivering such
certificate, and delivered to the Trustee.  Unless otherwise specified, any
reference in this Indenture to an Officers' Certificate shall be to an
Officers' Certificate of the Issuer.

         "Opinion of Counsel":  A written opinion of counsel who may, except as
otherwise expressly provided in this Indenture, be counsel for the Issuer and
who shall be satisfactory to the Trustee.

         "Original Principal Amount":  In respect of a Bond, its outstanding
principal amount on the date of issuance thereof.

         "Outstanding":  With respect to Bonds of a Series, as of the date of
determination, all Bonds of such Series theretofore authenticated and delivered
under this Indenture except:

                          (i)     Definitive Bonds theretofore cancelled by the
                 Bond Registrar or delivered to the Bond Registrar for
                 cancellation;

                          (ii)    Bonds or portions thereof for whose payment
                 or redemption money in the necessary amount has been
                 theretofore deposited with the Trustee or any Paying Agent
                 (other than the Issuer) in trust for the Holders of such
                 Bonds; provided, however, that if such Bonds are to be
                 redeemed, notice of such redemption has been duly given
                 pursuant to this Indenture or provision therefor, satisfactory
                 to the Trustee, has been made;

                          (iii)   Bonds in exchange for or in lieu of which
                 other Bonds have been authenticated and delivered pursuant to
                 this Indenture unless proof satisfactory to the Trustee is
                 presented that any such Bonds are held by a bona fide
                 purchaser; and

                          (iv)    Bonds alleged to have been destroyed, lost or
                 stolen which have been paid as provided for in Section 2.8;

provided, however, that in determining whether the Holders of the requisite
percentage of the Aggregate Current Principal Amount of the Outstanding Bonds
or of the Outstanding Bonds of any





                                      -17-
<PAGE>   23
Series have given any request, demand, authorization, direction, notice,
consent or waiver hereunder, Bonds owned by the Issuer, any other obligor upon
the Bonds or any Affiliate of the Issuer or such other obligor shall be
disregarded and deemed not to be Outstanding, except that, in determining
whether the Trustee shall be protected in relying upon any such request,
demand, authorization, direction, notice, consent, or waiver, only Bonds which
the Trustee knows to be so owned shall be so disregarded. Bonds so owned which
have been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Bonds and that the pledgee is not the Issuer, any other
obligor upon the Bonds or any Affiliate of the Issuer or such other obligor.
If an election has been made or will be made to treat the Trust Estate and any
other assets securing such Series set forth in such election, as one or more
REMICs, solely for purposes of a Non-Disqualification Opinion and for purposes
of determining whether a Non-Disqualification Opinion must be delivered
pursuant to any requirement of this Indenture, a Bond shall not be deemed to
cease to be Outstanding pursuant to clause (ii) above prior to the date on
which the money is payable to Holders of the Bonds.

         "Overdue Bond":  As defined in Section 2.9(c).

         "Paying Agent":  The Trustee or any other depository institution or
trust company that is authorized by the Issuer pursuant to Section 3.3 to pay
the principal of, or interest on, any Bonds on behalf of the Issuer.

         "Payment Date":  As to any Series or Class, any day which is specified
in the related Series Supplement as an Interest Payment Date or Principal
Payment Date for the Bonds of such Series or Class.

         "Payment Date Statement":  As defined in Section 2.9(e).

         "Permitted Encumbrance":  Any lien, charge, security interest,
mortgage or other encumbrance (other than the lien of this Indenture) Granted
by the Issuer in any portion of a Trust Estate, provided that:

                           (i)    such lien, charge, security interest or
                 encumbrance extends only to a portion of such Trust Estate
                 which is limited to cash deliverable or payable to or at the
                 order of the Issuer,

                          (ii)    such lien, charge, security, interest,
                 mortgage or other encumbrance secures, directly or indirectly,
                 indebtedness which the Issuer is permitted to incur under the
                 terms of this Indenture and its Certificate of Incorporation,
                 and

                         (iii)    the beneficiary of such lien, charge,
                 security interest, mortgage or other encumbrance shall have
                 agreed that in connection with the enforcement thereof it will
                 not bring any Proceeding seeking, or which would result in,
                 the sale of any portion of any Trust Estate and will not file
                 any petition for the commencement of insolvency proceedings
                 with respect to the Issuer under the federal bankruptcy laws,





                                      -18-
<PAGE>   24
                 as now or hereafter in effect, or any other present or future
                 federal or state bankruptcy, insolvency or similar law, or for
                 the appointment of any receiver, liquidator, assignee,
                 trustee, custodian, sequestrator or other similar official of
                 the Issuer or of any of its property, or seeking an order for
                 the winding up or liquidation of the affairs of the Issuer
                 until not less than 91 days after payment in full of all
                 Outstanding Bonds.

         "Person":  Any individual, corporation, partnership, joint venture,
association, joint stock company, trust (including any beneficiary thereof),
unincorporated organization or government or any agency or political
subdivision thereof.

         "Plan":  Any Person which is an employee benefit plan, trust or
account subject to Title I of ERISA or an individual retirement account or
employee benefit plan, trust or account subject to Section 4975 of the Code or
comparable provisions of any subsequent enactment or a governmental plan
defined in Section 3(2) of ERISA subject to any federal, state or local law
which is, to a material extent, similar to the foregoing provisions of ERISA or
the Code.

         "Pledged Account":  With respect to a Series of Bonds, the Collection
Account relative thereto.

         "Pool Scheduled Principal Balance":  With respect to a Series of Bonds
collateralized by Conventional Certificates, as defined in the related Pooling
and Administration Agreement.

         "Pooling and Administration Agreement":  As to any Conventional
Certificate, the agreement pursuant to which such Conventional Certificate was
issued and is governed.

         "Predecessor Bonds":  With respect to any particular Bond of a Series
and Class, every previous Bond of that Series and Class evidencing all or a
portion of the same debt as that evidenced by such particular Bond; and, for
the purpose of this definition, any Bond of a Series authenticated and
delivered under Section 2.8 in lieu of a lost, destroyed or stolen Bond of the
same Series shall be deemed to evidence the same debt as the lost, destroyed or
stolen Bond.

         "Prepayment Period":  With respect to a Series of Bonds and a
Principal Payment Date, the calendar month preceding such  Payment Date.

         "Principal Distribution Amount":  With respect to any Payment Date for
a Series, an amount determined as provided in the related Series Supplement
(which amount may, to the extent specified in the related Series Supplement, be
a negative number).

         "Principal Only Bond":  A Bond of a Series which is entitled only to
payments of principal thereof and on which no interest will accrue or be
payable.





                                      -19-
<PAGE>   25
         "Principal Payment Date":  With respect to any Series or Class, any
date specified in the related Series Supplement as a fixed date on which an
installment of principal is due and payable to the extent of Available Funds on
such date.

         "Principal Prepayment":  With respect to any Series, as defined in the
related Pooling and Administration Agreement.

         "Principal Receipts":  With respect to any Series, as defined in the
related Series Supplement.

         "Principal Reduction Date":  With respect to a particular Series, any
Principal Payment Date.

         "Proceeding":  Any suit in equity, action at law or other judicial or
administrative proceeding.

         "Qualified GIC":  A guaranteed investment contract or surety bond
Granted or to be Granted to the Trustee to provide for the investment of funds
in a Pledged Account for a particular Series and ensuring a minimum rate of
return on investments of such funds, which contract or surety bond shall

                 (a)      be an obligation of an insurance company or other
         corporation whose claims paying ability rating or credit standing, as
         applicable, is acceptable to each of the Rating Agencies which at all
         times that such contract is in force, are rating the Bonds of such
         Series;

                 (b)      provide that the Trustee may exercise all of the
         rights of the Issuer under such contract or surety bond without the
         necessity of the taking of any action by the Issuer;

                 (c)      provide that if at any time the then current claims
         paying ability rating or credit standing, as applicable, of the
         obligor under such guaranteed investment contract is such that
         continued investment pursuant to such contract of funds included in
         the Trust Estate for such Series would result in a downgrading of any
         rating of the Bonds of such Series, the Trustee may terminate such
         contract and be entitled to the return of all funds previously
         invested thereunder, together with accrued interest thereon at the
         interest rate provided under such contract through the date of
         delivery of such funds to the Trustee; and

                 (d)      meet such other standards as may be specified in the
         Series Supplement for such Series.

         "Qualified Liquidation":  With respect to any Series, the plan or
plans for the complete liquidation of the REMIC or REMICs, as applicable,
relative to such Series, within the meaning of Section 860F(a)(4), adopted by
the Issuer within 90 days prior to the final Payment Date of such Series.

         "Qualified Nominee":  A Person in whose name Certificates or Eligible
Investments Granted to the Trustee may be registered as nominee of the Trustee
in lieu of registration directly in the name





                                      -20-
<PAGE>   26
of the Trustee, provided that the following conditions shall be satisfied in
connection with such registration:

                 (a)      the instruments governing the creation and operation
         of the nominee provide that neither the nominee nor any owner of an
         interest in the nominee (other than the Trustee) shall have any
         interest, beneficial or otherwise, in any Certificates or Eligible
         Investments at any time held in the name of the nominee, except for
         the purpose of transferring and holding legal title thereto;

                 (b)      the nominee and the Trustee have entered into a
         binding agreement:

                           (i)    establishing that any Certificates or
                 Eligible Investments held in the name of the nominee are to be
                 held by the nominee as agent (other than commission agent or
                 broker) or nominee for the account of the Trustee, and

                          (ii)    appointing the Trustee as the agent and
                 attorney of the nominee with full power and authority
                 irrevocably to sell, assign, endorse, transfer and deliver any
                 Certificates or Eligible Investments standing in the name of
                 the nominee, and to execute and deliver all such instruments
                 as may be necessary and proper for such purpose; and

                 (c)      in connection with the registration of any
         Certificate or Eligible Investment in the name of the nominee, all
         requirements under applicable governmental regulations necessary to
         effect a valid registration of transfer of such Certificate or
         Eligible Investment are complied with.

         "Rating Agency" or "Rating Agencies":  With respect to each Series of
Bonds at any relevant time, the rating agency or agencies requested by the
Issuer to rate, and then rating, the Bonds of such Series.  The Rating Agencies
for each Series of Bonds will be specified in the related Series Supplement.

         "Realized Losses":  With respect to any Series collateralized by
Conventional Certificates, as defined in the related Pooling and Administration
Agreement, including Excess Losses.

         "Record Date":  With respect to any Series or Class, a date specified
in the related Series Supplement as a date on which the Holders of Bonds of
such Series or Class entitled to receive a payment of principal or interest (or
notice of a payment in full of principal) on the succeeding Payment Date are
determined.

         "Redemption Date":  With respect to any Series of Bonds, any  Payment
Date on which Bonds of such Series may be redeemed  at the option of the Issuer
pursuant to Section  10.1 or Section 10.4.





                                      -21-
<PAGE>   27
         "Redemption Price":  Except as otherwise specified in the related
Series Supplement, with respect to any Bond of a particular Series to be
redeemed in whole or in part pursuant to Article X hereof, an amount equal to
100% of the Imputed Principal Balance of the Bond to be so redeemed, together
with (except in the case of a Principal Only Bond) interest on such amount at
the applicable Bond Interest Rate through the Interest Accrual Period for the
date of redemption, other than any installments of interest due and payable on
or before the applicable Redemption Date.

         "Reference Bank":  A bank providing quotations for use in determining
LIBOR as specified in the related Series Supplement for any Series of Bonds
having one or more Classes of LIBOR Bonds.

         "Reinvestment Income":  With respect to a Series of Bonds and any
related Payment Date, all interest, income and other return on capital received
from the investment of amounts standing to the credit of the related Collection
Account since the previous Payment Date or in the case of the first Payment
Date, since the Closing Date.

         "REMIC":  A "real estate mortgage investment conduit" within the
meaning of Section 860D of the Code.  References herein to "a REMIC", "each
REMIC", "the REMIC", or "any REMIC" are to each REMIC established pursuant to
each Series Supplement.

         "REMIC Loss":  The failure of a REMIC to qualify or to continue to
qualify as a REMIC or the imposition of a tax under the REMIC Provisions on any
income of a REMIC.

         "REMIC Provisions":  Provisions of the federal income tax law relating
to real estate mortgage investment conduits, which appear at Section 860A
through 860G of Subchapter M of Chapter 1 of the Code, and related provisions,
and regulations and rulings promulgated thereunder, as the foregoing are in
effect from time to time.

         "Remittance Date":  Unless otherwise specified in the related Series
Supplement, the 18th day of any month or if such 18th day is not a Business
Day, the Business Day immediately preceding.

         "Reserve Interest Rate":  With respect to any Class of Variable Rate
Bonds of a Series, as set forth in the related Series Supplement.

         "Residual Bond":  With respect to any Series, as defined in the
related Series Supplement.

         "Residual Interest":  Except as otherwise provided in the related
Series Supplement, with respect to any Series for which a REMIC election or
elections has or have been made or will be made in respect of the Trust Estate
or other assets specified in such election and securing such Series, any rights
to receive payments under this Indenture which rights are designated as a
residual interest in a REMIC within the meaning of Section 860G(a)(2) of the
Code.





                                      -22-
<PAGE>   28
         "Residual Interest Holders":  Except as otherwise provided in the
related Series Supplement, with respect to any Series for which a REMIC
election or elections has or have been made or will be made in respect of the
Trust Estate or other assets specified in such election and securing such
Series, the owner or assignee of the Residual Interest of each such REMIC or an
undivided interest in the Residual Interest of each such REMIC.

         "Responsible Officer":  With respect to the Trustee, the chairman or
vice-chairman of the board of directors, the chairman or vice-chairman of the
executive committee of the board of directors, the president, any Vice
President, the secretary, any assistant secretary, the treasurer, any assistant
treasurer, the cashier, any trust officer or assistant trust officer, the
controller, any assistant controller or any other officer of the Trustee
customarily performing functions similar to those performed by any of the above
designated officers and also, with respect to a particular corporate trust
matter, any other officer to whom such matter is referred because of his
knowledge of and familiarity with the particular subject.

         "Restricted Bond":  With respect to any relevant Series, as defined in
the related Series Supplement.

         "SAB Amount":  With respect to any SAB Bond of a Series comprising a
Class or Classes of SAB Bonds, and any SAB Payment Date, the scheduled
principal payment for such Bond as determined from the table of Scheduled
Principal Balances of SAB Bonds in the related Series Supplement.

         "SAB Bond":  A Scheduled Amortization Bond, as specifically identified
in the related Series Supplement, with respect to which principal is payable on
each SAB Payment Date of such Series only up to the amount of the SAB Principal
Payment indicated for such SAB Payment Date.

         "SAB Payment Date":  With respect to any Series that includes a Class
or Classes of SAB Bonds, any Payment Date on which a payment of principal on
the SAB Bonds of such Series is required to be made, the first of such dates
being the First SAB Paydown Date.

         "SAB Principal Payment":  With respect to any Series of Bonds that
includes a Class or Classes of SAB Bonds, and to each SAB Payment Date relative
to such Series, the SAB Amount for such SAB Payment Date plus any portion of a
SAB Amount unpaid from a previous SAB Payment Date, all as specified in the
related Series Supplement.

         "Sale":  As defined in Section 5.17.

         "Schedule of Certificates":  Schedule A to a Series Supplement
listing, the Conventional Certificates being Granted to the Trustee on the
Closing Date for such Series.

         "Scheduled Principal Balance":  With respect to a mortgage loan
underlying a Conventional Certificate, as defined in the related Pooling and
Administration Agreement.





                                      -23-
<PAGE>   29
         "Senior Bond":  With respect to a Series of Senior/Subordinated Bonds,
a Bond of a Class of such Series which Class is preferred in right of payment
of principal and/or interest to the Classes of Junior Bonds of such Series, as
more particularly described in the related Series Supplement.

         "Series":  Each separate series of Bonds issued pursuant to this
Indenture and a Series Supplement thereto setting forth the specific terms of
such Series of Bonds, which series may, as provided in the related Series
Supplement, be divided into two or more Classes.

         "Series Supplement":  A supplemental indenture to this Indenture that
authorizes a particular Series of Bonds.

         "Special Hazard Loss":  Unless otherwise specified in the related
Series Supplement, with respect to a mortgage loan underlying a Conventional
Certificate securing a Series of Bonds, the principal portion of such mortgage
loan not recovered from insurance proceeds and liquidation proceeds or
otherwise as a result of any casualty loss not covered by standard hazard
insurance, including a loss resulting from vandalism, earthquake, flood, mud
flow, and a loss from partial damage caused by reason of application of any
coinsurance clause in an applicable standard hazard policy, including the
amount of any unrecovered advance made by the servicer of each mortgage loan
incurring a Special Hazard Loss.

         "Special Hazard Loss Amount":  With respect to any relevant Series of
Bonds, the amount specified in the related Series Supplement, as adjusted from
time to time in accordance with such Series Supplement.

         "Special Hazard Coverage Termination Date":  With respect to any
relevant Series of Bonds, the earlier of (a) the Payment Date on which the
amount of Special Hazard Losses incurred on the mortgage loans underlying the
Conventional Certificates securing such Series of Bonds and not previously
deducted from the Special Hazard Loss Amount relative to such Series of Bonds,
equals or exceeds the Special Hazard Loss Amount on such Payment Date, and (b)
the Cross-over Date relative to such Series of Bonds.

         "Special Payment Date":  With respect to any Overdue Bond of any
Series or Class, the fixed day specified in the related Series Supplement
during each month following the month in which any amount due on such Overdue
Bond was not paid.

         "Special Payment Date Statement":  As defined in Section 2.9(f).

         "Special Record Date":  With respect to any Special Payment Date  for
the Bonds of a Series, the date as of which the Holders of Bonds of the related
Series or any Class within such Series entitled to receive a payment of
principal (other than a payment in full of all unpaid principal of a Bond) or
interest, or notice of payment in full of principal, on such Special Payment
Date  are to be determined, which date shall be as specified in the related
Series Supplement.





                                      -24-
<PAGE>   30
         "Startup Day":  With respect to any Series in respect of which one or
more REMIC elections have been made, as defined in the Series Supplement
relative thereto in respect of each such REMIC.

         "Stated Maturity":  With respect to any installment of principal of or
interest on any Bond, the date specified in such Bond as the fixed date on
which such installment is due and payable to the extent of Available Funds.

         "Straight Pass-Through Conventional Certificate":  A Conventional
Certificate under the terms of which no interest is distributable to the holder
thereof with respect to prepaid principal of any underlying mortgage loan for
any period after the date of any such prepayment, with the result that the
amount of interest distributable to the holder of such Conventional Certificate
on the Distribution Date on which such prepaid principal is distributed might
be less than one month's interest at the applicable Certificate Rate on the
Certificate Principal Balance of such Certificate, determined before giving
effect to the Distribution due on such Distribution Date.

         "Tender Date":  With respect to a Series, a day specified in the
related Series Supplement for each Payment Date on or before which date a
Bondholder must submit notice to the Trustee requesting redemption of his or
its Bonds or submit notice requesting withdrawal of such a request for
redemption pursuant to Section 10.4.

         "Trust Estate":   With respect to any Series, all money, instruments
and other property subject or intended to be subject to the lien of this
Indenture for the benefit of such Series as of any particular time (including,
without limitation, all property and interests Granted to the Trustee in the
Series Supplement for such Series), including all proceeds thereof.

         "Trust Indenture Act" or "TIA":  The Trust Indenture Act of 1939 as it
may be amended from time to time.

         "Trustee": Chase Bank of Texas, National Association, as trustee,
until a successor Person shall have become the Trustee pursuant to the
applicable provisions of this Indenture, and thereafter "Trustee" shall mean
such successor Person.  Pursuant to Section 6.16, the Issuer may appoint a
different Person to serve as an alternate to the Trustee and when a different
Person is so appointed pursuant to Section 6.16 and the related Series
Supplement, the term Trustee shall, with respect to such Series of Bonds, refer
to the alternate Person so appointed.

         "Uncertificated Certificate":  A Certificate issued in book-entry form
and not represented by an instrument.

         "Unpaid Interest":  With respect to a Class and an Interest Payment
Date, the excess of the Accrued Bond Interest for such Class on such Interest
Payment Date over the amount actually paid in respect of interest on such Class
on such Interest Payment Date.

         "Variable Rate Bond Redemption Price":  With respect to a Series that
includes one or more Classes of Variable Rate Bonds, as defined in the related
Series Supplement.





                                      -25-
<PAGE>   31
         "Variable Rate Bonds":  A Bond (including a LIBOR Bond) on which
interest accrues at any time at a Bond Interest Rate that is adjusted,
according to a predetermined index, at fixed periodic intervals, all as set
forth in the related Series Supplement.

         "Variable Rate Interest Accrual Period":  The period specified in the
related Series Supplement for any Class of Variable Rate Bonds, and including
each LIBOR Interest Accrual Period.

         "Vice President":  With respect to the Issuer or the Trustee, any vice
president, whether or not designated by a number or a word or words added
before or after the title "vice president".

         "Voting Record Date":  Unless specified otherwise in the related
Series Supplement for any Series of Bonds, the record date specified in TIA
Section  316(c).

         SECTION 1.2      RESERVED.

         SECTION 1.3      Calculations Respecting Mortgage Loans Underlying
                          Certificates.

                 (a)      In connection with all calculations required to be
         made pursuant to this Indenture with respect to Distributions on any
         Certificate, any payments on the underlying mortgage loans or any
         payments on any other assets included in a Trust Estate, and with
         respect to the income which can be earned from the reinvestment of
         Distributions and of any other amounts receivable for deposit in a
         Pledged Account, the rules set forth in this Section 1.3 shall be
         applied except to the extent supplemented or modified herein or in the
         Series Supplement for any particular Series.

                 (b)      If a Series Supplement provides that calculations
         with respect to Distributions on all or any part of the Certificates
         securing the related Series shall be made on a mortgage
         loan-by-mortgage loan basis, then such calculations shall be based
         upon current information as to the terms of such mortgage loans and
         reports of payments received on such mortgage loans supplied to the
         Trustee or the Issuer, as the case may be, by the Person responsible
         for the servicing thereof and satisfying such requirements, if any, as
         may be set forth in such Series Supplement.  To the extent it is not
         patently incorrect on its face, such information may be conclusively
         relied upon in making such calculation.

                 (c)      For any Certificate with respect to which
         calculations required to be made pursuant to this Indenture are not
         made on a mortgage loan-by-mortgage loan basis, such calculations
         shall be made on the basis of information or accountings as to
         Distributions on such Certificate furnished by the related
         Administrator and satisfying such requirements, if any, with respect
         thereto as may be set forth in the Series Supplement for the Series
         secured thereby.

         To the extent they are not patently incorrect on their face, such
         information or accountings may be conclusively relied upon in making
         such calculations.





                                      -26-
<PAGE>   32
                 (d)      Except as specified in a particular Series
         Supplement, each Distribution receivable with respect to a
         Certificate, unless actually received earlier, shall be assumed to be
         received at the time specified in the related Series Supplement and
         shall be assumed to be immediately deposited in the related Collection
         Account and reinvested on the next succeeding Business Day at the
         applicable Assumed Reinvestment Rate.  Unless the related Series
         Supplement provides otherwise, all principal of and interest on
         investments held in a Pledged Account shall be assumed to be received
         on the date due and immediately deposited in such Pledged Account and
         reinvested on the next succeeding Business Day at the applicable
         Assumed Reinvestment Rate.  Unless the related Series Supplement
         provides otherwise, all funds assumed to be reinvested at the
         applicable Assumed Reinvestment Rate shall be assumed to remain so
         invested until the Business Day next preceding the Principal Reduction
         Date or Interest Payment Date on which they are required to be
         available in the related Collection Account for application, in
         accordance with the terms hereof and of the related Series Supplement,
         to payments of principal of or interest on the Bonds of the related
         Series.  All funds eligible to be invested pursuant to a Qualified GIC
         shall (subject, however, to any limitations contained in such
         Qualified GIC) be assumed to be invested thereunder on the next
         Business Day after the assumed date of receipt and to remain invested
         thereunder until the Business Day preceding the Principal Reduction
         Date on which such funds are, or might be, required to be available
         for application pursuant to this Indenture or the applicable Series
         Supplement.





                                      -27-
<PAGE>   33
                                   ARTICLE II

                                   THE BONDS

         SECTION 2.1      Forms Generally.

         The Bonds of each Series and the Trustee's certificate of
authentication thereon shall be in substantially the form or forms set forth in
the Series Supplement pursuant to which such Bonds are constituted and as may
in the Issuer's judgment be necessary, appropriate or convenient to permit the
Bonds to be issued and sold to or held in bearer form by non-United States
Persons, to establish entitlement to an exemption from United States
withholding tax or reporting requirements with respect to payments on the
Bonds, or to comply, or facilitate compliance, with other applicable laws.
Each Series of Bonds may have such letters, numbers or other marks of
identification and such legends or endorsements placed thereon as may be
required to comply with the rules of any securities exchange on which the Bonds
may be listed, or as may, consistently herewith, be determined by the officers
executing such Bonds, as evidenced by their execution thereof.  While Bonds may
contain the above-referenced provisions with respect to Bonds issued in bearer
form, no Bonds may actually be issued in bearer form until the Issuer and the
Trustee shall have entered into an appropriate supplemental indenture pursuant
to Section 9.1(8) providing for such issuance.  Any portion of the text of any
Bond may be set forth on the reverse thereof with an appropriate reference on
the face of the Bond.

         The definitive Bonds shall be printed, lithographed or engraved or
produced by any combination of these methods on steel engraved borders or may
be produced in any other manner permitted by the rules of any securities
exchange on which the Bonds may be listed, all as determined by the officers
executing such Bonds, as evidenced by their execution thereof.

         Each Class of Book Entry Bonds shall be evidenced by one or more
certificates physically held by the Clearing Agency, which certificates may be
typewritten, printed, lithographed, mimeographed or otherwise produced.

         SECTION 2.2      Form of Trustee's Certificate of Authentication.

         The form of the Trustee's certificate of authentication is as follows:

         This is one of the Bonds referred to in the within-mentioned
Indenture.


                     ----------------------------------------------------- 
                     Chase Bank of Texas, National Association, as Trustee

                     By            
                       ----------------------------------------------------     
                          Authorized Signatory



                                      -28-
<PAGE>   34
         SECTION 2.3      Bonds Issuable in Series and Classes; General
                          Provisions with Respect to Principal and Interest
                          Payments.

         The aggregate principal amount of Bonds that may be issued pursuant to
this Indenture is unlimited.

         The Bonds may, as provided herein, at the election of and as
authorized by the Board of Directors, be issued in one or more Series, each of
which Series may consist of only one Class of Bonds or may be divided into two
or more Classes, and shall be designated generally as the "Collateralized
Mortgage Obligations" of the Issuer, with such further particular designations
added or incorporated in such title for the Bonds of any particular Series or
Class as the Board of Directors may determine.  Each Series shall include at
least one Class of Bonds which are not Compound Interest Bonds and may, but
need not, include one or more Classes of Compound Interest Bonds.

         If a Series of Bonds includes more than one Class, the Classes of
Bonds of such Series shall have such Stated Maturities as shall be specified in
the related Series Supplement.  Subject to the provisions of Section 3.1,
Section 5.19 and Section 8.2(d), the principal of each Bond shall be payable in
installments ending no later than the Stated Maturity of the final installment
of the principal thereof unless the unpaid principal of such Bond becomes due
and payable at an earlier date by declaration of acceleration, redemption or
otherwise.

         All payments of principal on the Bonds of a Series shall be applied on
each Payment Date prior to the occurrence of an Event of Default among the
Classes of such Bonds in accordance with the order of priority of payment set
out, and otherwise upon the terms specified in, the related Series Supplement.
Except to the extent specified in the related Series Supplement for a Series of
Bonds, payments of principal on each Class of Bonds, other than a Class of
Bonds subject to redemption at the request of a Holder, shall be made pro rata
among all Outstanding Bonds of such Class, without preference or priority of
any kind.

         The aggregate amount of principal of and interest on the Bonds of a
Series due and payable on each Payment Date for such Series shall be equal to
the Debt Service Requirement for such Series for such Payment Date.  All
payments made with respect to any Bond shall be applied first to the interest
then due and payable on such Bond and then to the principal thereof.  All
computations of interest accrued on any Bond shall be made as if each year
consisted of twelve months of thirty days each.

         Interest shall accrue on the Imputed Principal Balance of each
Outstanding Bond of a Series at the Bond Interest Rate relative thereto over
the related Interest Accrual Period and (other than interest accrued on any
Compound Interest Bonds of such Series, which shall be payable as described
below) shall be payable on each Interest Payment Date for such Series in an
amount equal to the lesser of (a) Available Funds on such Interest Payment
Date, after payment of all amounts payable in priority to such interest
payment, as determined pursuant to the related Series Supplement, and (b)
Accrued Bond Interest for such Interest Payment Date.





                                      -29-
<PAGE>   35
         Interest at the applicable Bond Interest Rate shall accrue on the
Imputed Principal Balance of each Outstanding Compound Interest Bond of a
Series from the Accrual Date for such Series, but none of such accrued interest
shall be payable until the Initial Interest Payment Date for such Compound
Interest Bond (or the first Interest Payment Date thereafter if the Debt
Service Requirement for such Initial Interest Payment Date is exactly equal to
the aggregate amount of principal of and interest on all other Classes of Bonds
of such Series which is payable on such Initial Interest Payment Date).  On
each Interest Payment Date prior to the Initial Interest Payment Date for a
Compound Interest Bond, Accrued Bond Interest on such Bond during the related
Interest Accrual Period shall be added to the Current Principal Amount of such
Bond and shall thereafter accrue interest.  Except as otherwise specified in
the related Series Supplement, on the Initial Interest Payment Date for the
Compound Interest Bonds of a Series, Accrued Bond Interest on such Bonds for
the related Interest Accrual Period shall be payable in an amount not in excess
of the difference between (a) the Debt Service Requirement on the related
Series for such Initial Interest Payment Date and (b) the aggregate amount of
principal of and interest on all other Bonds of the related Series required to
be paid on such date.  The portion, if any, of such interest which is not paid
on such Initial Interest Payment Date shall be added to the principal of such
Compound Interest Bonds on such Initial Interest Payment Date and shall
thereafter accrue interest in the manner set forth above.  On each Interest
Payment Date after the Initial Interest Payment Date for a Class of Compound
Interest Bonds Accrued Bond Interest on the Class Imputed Principal Balance of
such Class shall be payable to the extent of Available Funds as specified in
the related Series Supplement.

         In the case of a Class or Classes of Bonds which are Variable Rate
Bonds, the related Series Supplement shall specify the method of calculating
the Bond Interest Rate at any time to be borne by such Variable Rate Bonds.  On
each Interest Determination Date relative to a Class of Variable Rate Bonds the
interest rate of which is calculated by reference to an Index, until such
Variable Rate Bonds are paid in full, the Trustee shall determine the rate of
interest pursuant to the relevant Index for the purposes of such Interest
Determination Date in accordance with the mechanism specified in the related
Series Supplement, and the resulting Bond Interest Rate to be applicable to
such Variable Rate Bonds for the next Variable Rate Interest Accrual Period.

         Promptly after its determination thereof, the Trustee shall advise the
Issuer of the rate of interest applicable to each Class of  Variable Rate Bonds
of a Series for the next succeeding Variable Rate Interest Accrual Period.

         In determining LIBOR or the Reserve Interest Rate and the resulting
Bond Interest Rate for each relevant Variable Rate Interest Accrual Period for
any relevant Class of Variable Rate Bonds, the Trustee may conclusively rely
and shall be protected in relying upon the offered rates quoted (whether quoted
in writing, electronically or orally) by the Reference Banks or other banks as
to LIBOR or the Reserve Interest Rates, as appropriate, in effect from time to
time.  The Trustee shall have no liability or responsibility to any Person for
(i) its selection of other banks for purposes of determining the Reserve
Interest Rate or (ii) its inability, following a good faith reasonable effort,
to determine LIBOR or a Reserve Interest Rate, all as provided for in the
definition of "LIBOR" in the related Series Supplement.





                                      -30-
<PAGE>   36
         The establishment of a rate of interest by reference to an Index and
the Reserve Interest Rate and the resulting Bond Interest Rate for each
relevant Variable Rate Interest Accrual Period relative to a Series of Bonds
shall (in the absence of manifest error) be final, conclusive and binding upon
the Holder or the Issuer and any of their respective partners, beneficiaries,
agents, officers, directors, employees or successors or assigns.

         Unless otherwise specified in the related Series Supplement,
calculation of the amount of interest accrued on the Bonds of any Class of any
Series during an Interest Accrual Period shall be made on the assumption that
any payment of principal on the Bonds of such Class made on a Principal
Reduction Date occurring during such Interest Accrual Period (other than on the
first day thereof) was instead paid on the first day of such Interest Accrual
Period.

         Any Unpaid Interest on a Class of Bonds shall be paid subject to and
as provided in the related Series Supplement.  Unless otherwise specified in
the related Series Supplement, no interest shall accrue on any Unpaid Interest.

         Notwithstanding any of the foregoing provisions with respect to
payments of principal of and interest on the Bonds, if the Bonds of a Series
have become or been declared due and payable following an Event of Default and
such acceleration of maturity and its consequences have not been rescinded and
annulled,  payments of principal of and interest on such Bonds shall be made in
accordance with Section 5.8.

         Each Bond shall bear upon the face thereof the designation so selected
for the Series and Class to which it belongs.

         Each Series of Bonds shall be created by a Series Supplement
authorized by the Board of Directors and establishing the terms and provisions
of such Series, specifying the Certificates and any other property to be
included in the Trust Estate therefor and Granting such Trust Estate as
security for the Series of Bonds created thereby.  The several Series may
differ in respect of any of the following matters:

         (1)     designation of the Series;

         (2)     dating of the Bonds of the Series and Accrual Date;

         (3)     the number of Classes, including the number of Classes of
                 Compound Interest Bonds, if any, the number of Classes of SAB
                 Bonds, if any, the number of Classes of Variable Rate Bonds,
                 if any, the number of Classes of Formula Rate Bonds, if any,
                 the number of Classes of Senior Bonds, if any, the number of
                 Classes of Junior Bonds, if any, and the maximum aggregate
                 principal amount of Bonds of each such Class which may be
                 issued;

         (4)     the Bond Interest Rate (if any) for each Class, and if such
                 Series of Bonds includes a Class or Classes of Variable Rate
                 Bonds, the method of calculating the Bond





                                      -31-
<PAGE>   37
                 Interest Rate borne at any time by such Variable Rate Bonds;
                 and if such Series of Bonds includes a Class of Formula Rate
                 Bonds, the method of calculating the Bond Interest Rate borne
                 at any time by such Formula Rate Bonds;

         (5)     the Stated Maturity of the final installment of principal of
                 each Class of Bonds of such Series entitled to payments of
                 principal;

         (6)     the place or places for the payment of the final installment
                 of principal;

         (7)     the priority of principal payments among the Classes entitled
                 to payments of principal and within each Class of the Series
                 entitled to payments of principal;

         (8)     the denominations of the Bonds of such Series;

         (9)     if such Series of Bonds includes a Class of Formula Rate
                 Bonds, restrictions relating to the transfer of such Class of
                 Formula Rate Bonds;

         (10)    whether the Bonds of such Series may be authenticated by an
                 Authenticating Agent, and, if so, the Person appointed as
                 Authenticating Agent for such Series;

         (11)    the Interest Payment Dates, Principal Payment Dates and
                 Special Payment Dates;

         (12)    the amount, if any, to be deposited at the Closing Date in the
                 Collection Account for such Series;

         (13)    whether a Qualified GIC is to be Granted to the Trustee with
                 respect to the investment of funds in any Pledged Account for
                 such Series, and, if so, the standards applicable to such
                 Qualified GIC, including the conditions, if any, under which
                 the Trustee shall be required to terminate such Qualified GIC;

         (14)    any items required to be delivered to the Trustee on the
                 Closing Date for such Series pursuant to the last paragraph of
                 Section 2.12;

         (15)    whether calculations with respect to the mortgage loans
                 underlying the Certificates securing such Series are to be
                 made on a mortgage loan-by-mortgage loan basis or on the basis
                 of the assumptions set forth in Section 1.3, and, if
                 applicable, any modifications to such assumptions to be used
                 in making calculations with respect to the Certificates
                 securing such Series;

         (16)    if calculations with respect to the mortgage loans underlying
                 the Certificates securing such Series are to be made on a
                 basis other than mortgage loan-by-mortgage loan, the
                 characteristics to be used in grouping such Certificates (and
                 any other assets to be included in any Collateral Group) into
                 Collateral Groups;





                                      -32-
<PAGE>   38
         (17)    (a) the requirements for verification of data supplied in
                 connection with the Conventional Certificates securing such
                 Series by the related Administrator regarding the underlying
                 mortgage loans, and (b) the documents relating to such
                 Conventional Certificates required to be delivered to the
                 Trustee pursuant to Section 2.12(k);

         (18)    the circumstances, if any, under which the Bonds of such
                 Series will be subject to redemption by Holders pursuant to
                 Article X and any supplement to or modification of the
                 requirements of Section 10.4 which are to apply to such
                 Series;

         (19)    the extent to which all or any portion of the interest accrued
                 but not payable on any Compound Interest Bonds of such Series
                 is to be included in the calculation of the Principal
                 Distribution Amount for any Payment Date for such Series;

         (20)    if an election has been or will be made to treat the Trust
                 Estate or any other assets specified in such election and
                 securing the Series or any portion thereof as a REMIC, the
                 designation of a certain Class or Classes of such Series as
                 "regular interests" in each such REMIC established in respect
                 of such Series and the designation of a single Class of such
                 Series as the "residual interest" in each such REMIC
                 established in respect of such Series;

         (21)    provisions with respect to the following terms for which the
                 definitions set forth in Article I require or permit further
                 specification, to the extent applicable to any Series of
                 Bonds, in the related Series Supplement:

                          (a)     "Accrued Bond Interest",

                          (b)     "Assumed Reinvestment Rate",

                          (c)     "Available Funds",

                          (d)     "Bankruptcy Loss Amount",

                          (e)     "Book Entry Termination" (if each Series is
                                  issued with Book Entry Bonds),
                          (f)     "Calculation Date",

                          (g)     "COFI",

                          (h)     "Collateral Group",

                          (i)     "Debt Service Requirement",

                          (j)     "Earliest Bond Redemption Date",





                                      -33-
<PAGE>   39
                          (k)     "ERISA Prohibited Bond",

                          (l)     "ERISA Restricted Bond",

                          (m)     "Eligible Investments" (if the definition of
                                  such term is to be expanded or restricted for
                                  such Series),

                          (n)     "Expense Reserve Amount",

                          (o)     "First SAB Paydown Date" (if such Series is
                                  issued with one or more Classes of SAB
                                  Bonds),

                          (p)     "Formula Rate Bond" (if such Series is issued 
                                  with a Class of Form  Rate Bonds),

                          (q)     "Fraud Loss Amount",

                          (r)     "Highest Bond Interest Rate",

                          (s)     "Index",

                          (t)     "Interest Accrual Period",

                          (u)     "Interest Determination Date",

                          (v)     "LIBOR",

                          (w)     "LIBOR Interest Accrual Period",

                          (x)     "Manager",

                          (y)     "Maximum Bond Interest Rate Assumption",
                          (z)     "Maximum Variable Interest Rate",

                          (aa)    "Net Interest Shortfall",

                          (bb)    "New York Agent",

                          (cc)    "New York Office",

                          (dd)    "Paying Agent" (if there will be a Paying
                                  Agent other than the Trustee for such
                                  Series),





                                      -34-
<PAGE>   40
                          (ee)    "Principal Distribution Amount",

                          (ff)    "Record Date",

                          (gg)    "Redemption Price",

                          (hh)    "Restricted Bond",

                          (ii)    "SAB Bond" (if such Series is issued with one
                                  or more Classes of SAB Bonds),

                          (jj)    "SAB Payment Date" (if such Series is issued
                                  with one or more Classes of SAB Bonds),

                          (kk)    "Special Allocation Bonds" (if such Series is
                                  issued with one or more Special Allocation
                                  Funds),

                          (ll)    "Special Hazard Loss Amount",

                          (mm)    "Special Record Date",

                          (nn)    "SAB Principal Payment" (if such Series is
                                  issued with one or more Classes of SAB
                                  Bonds),

                          (oo)    "Tender Date",

                          (pp)    "Termination Date" (if such Series is issued
                                  with Book Entry Bonds);

                          (qq)    "Variable Rate Interest Accrual Period" (if
                                  such Series is issued with one or more
                                  Classes of Variable Rate Bonds), and

                          (rr)    "Variable  Rate Bond Redemption Price",

         (22)    if applicable, registration, payment and other procedures to
                 be followed with respect to Certificates issued in book entry
                 form;

         (23)    any other provisions expressing or referring to the terms and
                 conditions upon which the Bonds of that Series are to be
                 issued under this Indenture; and

         (24)    The Series Supplement relative to each Series of Bonds secured
                 by assets in respect of which one or more REMIC elections have
                 been made shall specify each of the following in respect of
                 each such REMIC:

                                  (i)      the "Startup Day" for the purposes
                          of the REMIC Provisions;





                                      -35-
<PAGE>   41
                                  (ii)     the "latest possible maturity date"
                          of the regular interests of such REMIC for the
                          purposes of Section 860(G)(a)(1) of the Code;

                                  (iii)    each regular interest and Residual
                          Interest in such REMIC; and

                                  (iv)     the Prepayment Assumption in respect
                          of such Series of Bonds.

         SECTION 2.4      Denominations.

         The Bonds of each Series shall be issuable only as registered Bonds in
the denominations prescribed by the terms of the Series Supplement creating the
particular Series.

         SECTION 2.5      Execution, Authentication, Delivery and Dating.

         The Bonds shall be executed on behalf of the Issuer by its Chairman,
President or one of its Vice Presidents.  The signature of any of these
officers on the Bonds may be manual or facsimile.

         Bonds bearing the manual or facsimile signature of individuals who
were at any time the proper officers of the Issuer shall bind the Issuer,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Bonds or did not hold
such offices at the date of such Bonds.

         At any time and from time to time after the execution and delivery of
this Indenture, the Issuer may deliver Bonds executed by the Issuer to the
Trustee for authentication; and the Trustee shall authenticate and deliver such
Bonds as in this Indenture provided and not otherwise.

         Each Bond shall be dated as of the date specified in the related
Series Supplement.

         No Bond shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose, unless there appears on such Bond a
certificate of authentication substantially in the form provided for herein
executed by the Trustee or by any Authenticating Agent for the Series of which
it is a part by the manual signature of one of its authorized officers or
employees, and such certificate upon any Bond shall be conclusive evidence, and
the only evidence, that such Bond has been duly authenticated and delivered
hereunder.

         SECTION 2.6      Temporary Bonds.

         Pending the preparation of Definitive Bonds, the Issuer may execute,
and upon Issuer Order the Trustee shall authenticate and deliver, temporary
Bonds which are printed, lithographed, typewritten, mimeographed or otherwise
produced, in any authorized denomination, substantially of the





                                      -36-
<PAGE>   42
tenor of the Definitive Bonds in lieu of which they may be so issued and with
such variations as the officers executing such Bonds may determine, as
evidenced by their execution of such Bonds.

         If temporary Bonds are issued, the Issuer will cause Definitive Bonds
to be prepared without unreasonable delay. After the preparation of Definitive
Bonds, the temporary Bonds shall be exchangeable for Definitive Bonds upon
surrender of the temporary Bonds at the office or agency of the Issuer to be
maintained as provided in Section 3.2, without charge to the Holder.  Upon
surrender or cancellation of any one or more temporary Bonds, the Issuer shall
execute and the Trustee shall authenticate and deliver and exchange therefor a
like principal amount of Definitive Bonds of the same Series and Class and of
authorized denominations.  Until so exchanged, the temporary Bonds shall in all
respects be entitled to the same benefits under this Indenture as Definitive
Bonds of the same Class and Series.

         SECTION 2.7      Registration, Registration of Transfer and Exchange.

         The Issuer shall cause to be kept a register (the "Bond Register") in
which, subject to such reasonable regulations as it may prescribe, the Issuer
shall provide for the registration of Bonds and the registration of transfers
of Bonds.  The Trustee is hereby initially appointed "Bond Registrar" for the
purpose of registering Bonds and transfers of Bonds as herein provided.  Upon
any resignation of any Bond Registrar appointed by the Issuer, the Issuer shall
promptly appoint a successor or, in the absence of such appointment, shall
assume the duties of Bond Registrar.  In the event that the Trustee is acting
as Bond Registrar and the Trustee resigns as Trustee with respect to one or
more Series of Bonds, the Trustee may resign as Bond Registrar with respect to
the Bonds of such Series or Classes, as applicable.

         Each Authenticating Agent for a Series, unless it is appointed Bond
Registrar for such Series, and the Trustee, for any Series for which it is not
the Bond Registrar, shall be a co-Bond Registrar for such Series.  The Issuer
shall cause each co-Bond Registrar for a Series to furnish the Bond Registrar
for such Series promptly after each authentication of a Bond by it appropriate
information with respect thereto for entry by the Bond Registrar into the Bond
Register.  If the Trustee shall at any time not be authorized to keep and
maintain the Bond Register, the Trustee shall have the right to inspect such
Bond Register at all reasonable times and to rely conclusively upon a
certificate of the Person in charge of the Bond Register as to the names and
addresses of the Holders of the Bonds and the principal amounts and numbers of
such Bonds as held.  In the event that the Trustee is acting as Authenticating
Agent and the Trustee resigns as Trustee with respect to one or more Series of
Bonds, the Trustee may resign as Authenticating Agent with respect to the Bonds
of such Series or Classes, as applicable.

         Subject to restrictions, if any, in the related Series Supplement,
upon surrender for registration of transfer of any Bond at the office or agency
of the Issuer to be maintained as provided in Section 3.2, the Issuer shall
execute, and the Trustee shall authenticate and deliver, in the name of the
designated transferee or transferees, one or more new Bonds of any authorized
denominations, of the same Series and of a like aggregate principal amount and
Class.





                                      -37-
<PAGE>   43
         At the option of the Holder, Bonds may be exchanged for other Bonds of
any authorized denominations, of the same Series and of a like aggregate
initial principal amount and Class, upon surrender of the Bonds to be exchanged
at such office or agency.  Bonds (other than Book Entry Bonds) of a Class which
are subject to redemption at the request of Bondholders and which are redeemed
in part, but not in whole, pursuant to Section 10.4 shall be surrendered at
such office or agency in exchange for new Bond certificates, without service
charge, in an aggregate principal amount equal to and in exchange for the
unredeemed portion of such Bond so surrendered.  Whenever any Bonds are so
surrendered for exchange, the Issuer shall execute, and the Trustee shall
authenticate and deliver, the Bonds which the Bondholder making the exchange is
entitled to receive.

         Subject to restrictions, if any, in the related Series Supplement, all
Bonds issued upon any registration of transfer or exchange of Bonds shall be
the valid obligations of the Issuer, evidencing the same debt, and entitled to
the same benefits under this Indenture, as the Bonds surrendered upon such
registration of transfer or exchange.

         Every Bond presented or surrendered for registration of transfer or
exchange shall be duly endorsed, or be accompanied by a written instrument of
transfer in form satisfactory to the Trustee duly executed, by the Holder
thereof or his attorney duly authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange of Bonds, but the Issuer or the Bond Registrar may require payment of
a sum sufficient to cover any tax or other governmental charge as may be
imposed in connection with any registration of transfer or exchange of Bonds,
other than exchanges pursuant to Section 2.8 not involving any transfer.

         Except as otherwise specified in the related Series Supplement,
neither the Issuer nor the Bond Registrar shall be required to issue, register
the transfer of or exchange any Bonds which are subject to redemption at the
request of Bondholders of any Series during a period beginning at the opening
of business five (5) Business Days prior to the selection of Bonds of that
Series to be redeemed pursuant to Bondholder redemption under Section 10.4 and
ending at the close of business on the day of the mailing of any relevant
notice of redemption.  No Bond which has been tendered for Bondholder
redemption may be transferred or exchanged unless such request for redemption
is withdrawn.

         In the case of a Class of Book Entry Bonds, the provisions of this
Section 2.7 may be supplemented by provisions in the related Series Supplement
and by applicable rules established by the Clearing Agency for such Class
providing for transfer of registration of Book Entry Bonds on the books of the
Clearing Agency.

         SECTION 2.8      Mutilated, Destroyed, Lost or Stolen Bonds.

         If (1) any mutilated Bond is surrendered to the Trustee or the Trustee
receives evidence to its satisfaction of the destruction, loss or theft of any
Bond, and (2) there is delivered to the Trustee such security or indemnity as
may be required by it to save each of the Issuer and the Trustee harmless,
then, in the absence of notice to the Issuer or the Trustee that such Bond has
been acquired





                                      -38-
<PAGE>   44
by a bona fide purchaser, the Issuer shall execute and upon its request the
Trustee shall authenticate and deliver, in exchange for or in lieu of any such
mutilated, destroyed, lost or stolen Bond, a new Bond or Bonds of the same
Series, tenor, aggregate initial principal amount and Class bearing a number
not contemporaneously outstanding; provided, however, that if any such
mutilated, destroyed, lost or stolen Bond shall have become or shall be about
to become due and payable, or shall have become subject to redemption in full,
instead of issuing a new Bond, the Issuer may pay such Bond without surrender
thereof, except that any mutilated Bond shall be surrendered.  If, after the
delivery of such new Bond or payment of a destroyed, lost or stolen Bond
pursuant to the proviso to the preceding sentence, a bona fide purchaser of the
original Bond in lieu of which such new Bond was issued presents for payment
such original Bond, the Issuer and the Trustee shall be entitled to recover
such new Bond (or such payment) from the Person to whom it was delivered or any
Person taking such new Bond from such Person, except a bona fide purchaser, and
shall be entitled to recover upon the security or indemnity provided therefor
to the extent of any loss, damage, cost or expenses incurred by the Issuer or
the Trustee in connection therewith.

         Upon the issuance of any new Bond under this Section, the Issuer or
the Bond Registrar may require the payment of a sum sufficient to cover any tax
or other governmental charge that may be imposed in relation thereto and any
other reasonable expenses (including the fees and expenses of the Trustee or
Bond Registrar) connected therewith.

         Every new Bond issued pursuant to this Section in lieu of any
destroyed, lost or stolen Bond shall constitute an original additional
contractual obligation of the Issuer, whether or not the destroyed, lost or
stolen Bond shall be at any time enforceable by anyone, and shall be entitled
to all the benefits of this Indenture equally and proportionately with any and
all other Bonds of the same Series duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Bonds.

         SECTION 2.9      Payments of Principal and Interest.

                 (a)      Any installment of interest or principal on a Bond,
         or the Redemption Price of any Bond called for redemption, payable on
         any Bonds of any Series which is punctually paid or duly provided for
         by the Issuer on the applicable Payment Date shall be paid to the
         Person in whose name such Bond (or one or more Predecessor Bonds) is
         registered at the close of business on the Record Date for such
         Payment Date in the manner provided for in the related Series
         Supplement.  Any installment of interest or principal not punctually
         paid or duly provided for shall be payable in the manner and to the
         Persons specified in subsection (c) of this Section 2.9.

                 (b)      All reductions in the principal amount of a Bond (or
         one or more Predecessor Bonds) effected by payments of installments of
         principal made on any Payment Date or by the allocation of any
         Realized Losses or a Junior Bond Write Down Amount to such Bond





                                      -39-
<PAGE>   45
         shall be binding upon all Holders of such Bond and of any Bond issued
         upon the registration of transfer thereof or in exchange therefor or
         in lieu thereof, whether or not such payment or allocation of losses
         is noted on such Bond.  The final installment of principal of each
         Bond (including the Redemption Price of any Bond called for
         redemption, if such redemption will result in payment of the entire
         unpaid principal amount of such Bond) shall be payable only upon
         presentation and surrender thereof on or after the Payment Date
         therefor at the office or agency of the Issuer maintained by it for
         such purpose in the Borough of Manhattan, the City of New York, State
         of New York, pursuant to Section 3.2.

                 Whenever, on the basis of Distributions on the Certificates
         securing a Series received and expected to be received on the related
         Distribution Date, the Issuer expects that the entire remaining unpaid
         principal amount of any Bonds of such Series will become due and
         payable on the next Principal Payment Date, unless specified otherwise
         in the related Series Supplement it shall mail or cause to be mailed,
         no later than five days prior to such Principal Payment Date, to each
         Person in whose name a Bond to be so retired is registered at the
         close of business on the tenth Business Day prior to such Principal
         Payment Date, notwithstanding the Record Date otherwise applicable
         with respect to such Series, a notice to the effect that:

                       (i)        the Issuer expects that funds sufficient to
                 pay such final installment will be available in the Collection
                 Account on such Principal Payment Date, and

                      (ii)        if such funds are available, (A) such final
                 installment will be payable on such Principal Payment Date,
                 but only upon presentation and surrender of such Bond at the
                 office or agency of the Issuer maintained for such purpose
                 pursuant to Section 3.2 (the address of which shall be set
                 forth in such notice), and (B) no interest shall accrue on
                 such Bond after such Principal Payment Date.

         Notices in connection with redemptions or special redemptions of Bonds
         shall contain the information set forth in, and be mailed in
         accordance with, Section 10.2.

                 (c)      If the entire amount of Accrued Bond Interest on any 
         Class of Bonds of a Series is not paid in full on any Interest Payment 
         Date by reason of a shortfall in Available Funds over the amount 
         required to pay such Accrued Bond Interest and any amount required to
         be paid out of Available Funds in priority to such Accrued Bond 
         Interest, the amount of interest not paid on such Interest Payment 
         Date (such amount being the "Unpaid Interest") shall be payable on the
         following Interest Payment Date, to the extent that Available Funds on
         such following Interest Payment Date are sufficient and subject at all
         times to any order of priority of payments out of Available Funds
         specified in the related Series Supplement.  No interest shall accrue
         or be payable on any amounts of Unpaid Interest.

                 If the entire Principal Distribution Amount or aggregate
         Accrued Bond Interest payable out of Available Funds on any Series of
         Bonds on a Payment Date, or the entire Redemption Price payable in
         connection with the redemption in whole of any Bond,  which is due and
         payable on any Redemption Date, shall not have been punctually paid or
         duly





                                      -40-
<PAGE>   46
         provided for when and as due and payable (any Bond on which such an
         amount due and payable has not been punctually paid or duly provided
         for being hereinafter referred to as an "Overdue Bond"), then each
         such amount, together with, in the case of any Redemption Price not
         paid when due, interest thereon from the date such amount was due
         until paid, at the Bond Interest Rate of the related Bonds, shall be
         payable on each subsequent Special Payment Date, to the extent only
         that funds are available therefor in the related Collection Account,
         to the Person entitled thereto as provided below.  No interest shall
         accrue or be payable on any Overdue Bond or any unpaid interest in
         respect thereof except as expressly provided above.

                 Any reduction in the principal amount of any Overdue Bond (or
         one or more Predecessor Bonds) effected by any payments made on a
         Special Payment Date shall be binding upon all Holders of such Bond
         and of any Bond issued upon the registration of transfer thereof or in
         exchange therefor or in lieu thereof, whether or not such payment is
         noted on such Bond.  Payments of interest on any overdue portion of
         the Redemption Price of any Bond called for redemption  shall, except
         as provided below with respect to payment of the entire amount
         remaining due on an Overdue Bond, be made to the Person entitled
         thereto as provided below by check mailed to such Person's address as
         it appears in the Bond Register or, if the criteria specified in
         paragraph (ii) of Section 2.9(a) are fulfilled, by wire transfer to a
         depository institution satisfactory to the Trustee, or by such other
         means as may be agreed between the Trustee and the Holder of such
         Bond.

                 If funds sufficient to pay the entire amount remaining due on
         any Overdue Bonds of a particular Class are expected to be available
         on the next Special Payment Date for such Series, as shown on the
         Special Payment Date Statement for such Special Payment Date, the
         Trustee, on behalf of the Issuer, will notify each Person in whose
         name an Overdue Bond to be so retired is registered at the close of
         business on the Special Record Date that would otherwise be applicable
         to such Special Payment Date, by notice mailed no later than five days
         after such otherwise applicable Special Record Date, that sufficient
         funds are expected to be available to make such payment and that, if
         such funds are available, such payment will be made only upon
         presentation and surrender of such Overdue Bond at the office or
         agency of the Issuer maintained for such purpose pursuant to Section
         3.2 (the address of which shall be set forth in such notice).  Upon
         the giving of such notice, the entire amount then due and payable on
         any such Overdue Bond shall, if sufficient funds are so available
         therefor, be payable only upon presentation and surrender of such
         Overdue Bond to the office or agency of the Issuer maintained for that
         purpose.

                 Other amounts payable with respect to any Overdue Bond as
         provided above on any Special Payment Date shall be payable (i) to the
         Person in whose name that Bond (or one or more Predecessor Bonds) is
         registered at the close of business on the Special Record Date for
         such Special Payment Date or (ii) in any other lawful manner not
         inconsistent with the requirements of any securities exchange on which
         such Bond may be listed and upon such notice as may be required by
         such exchange, if, after notice given by the Issuer to the Trustee





                                      -41-
<PAGE>   47
         of the proposed payment pursuant to this provision, such manner of
         payment shall be deemed practicable by the Trustee.

                 (d)      Subject to the foregoing provisions of this Section,
         each Bond delivered under this Indenture upon registration of transfer
         of or in exchange for or in lieu of any other Bond shall carry the
         rights to unpaid principal and interest that were carried by such other
         Bond.  Any checks mailed pursuant to subsection (a) or (c) of this
         Section 2.9 and returned undelivered shall be held in accordance with
         Section 3.3.

                 (e)      Not later than each Calculation Date for a Series, 
         the Trustee shall prepare and deliver to the Issuer a Payment Date
         Statement with respect to the following Payment Date setting setting
         forth the following items (unless otherwise specified in the related
         Series Supplement):

                       (i)        the Debt Service Requirement with respect to
                 such Series for the following Payment Date;

                      (ii)        the aggregate amount of interest accrued
                 during the Interest Accrual Period relating to such Payment
                 Date on all Outstanding Bonds of such Series;

                     (iii)        the aggregate amount of Accrued Bond Interest
                 payable (to the extent of Available Funds) on each Class of
                 Bonds of such Series then Outstanding, in accordance with the
                 order of priority of payment in the Series Supplement;

                      (iv)        the amount of Net Interest Shortfalls and the
                 interest portion of all Realized Losses allocable to the Bonds
                 of such Series, or any Class or Classes thereof, on such
                 Payment Date;

                       (v)        the aggregate amount of principal payable out
                 of Available Funds for such Payment Date in respect of each
                 Class of Bonds of such Series then Outstanding, the principal
                 portion of any Realized Losses then allocable to the Bonds of
                 such Series and the Classes of Bonds to which such Realized
                 Losses are required to be allocated pursuant to the related
                 Series Supplement, and the amount of any Junior Bond Writedown
                 Amount then allocable to any Class of Junior Bonds of such
                 Series and the Class or Classes of Junior Bonds to which it is
                 allocable;

                      (vi)        if such following Payment Date is an Initial
                 Interest Payment Date for any Class of Compound Interest Bonds
                 of such Series, the amount of interest payable thereon on such
                 Interest Payment Date, the amount of the installment of
                 principal, if any, due and payable on such Class of Compound
                 Interest Bonds on such Payment Date, and the amount, if any,
                 of accrued interest to be added to the principal of such Class
                 of Compound Interest Bonds on such Payment Date;





                                      -42-
<PAGE>   48
                      (vi)        whether the amount expected to be available
                 in the Collection Account on such Payment Date will be
                 sufficient to pay on such Payment Date all amounts specified
                 in clauses (iii) and (v) above, and, if not, the percentages
                 of each such amount which may be paid in accordance with the
                 priorities set forth in Section 8.2 from the amounts expected
                 to be available in the Collection Account for such Series;

                     (vii)        the amounts included in such statement
                 pursuant to clauses (iii) and (v) above, expressed in each
                 case per Individual Bond, to be paid on such Payment Date and
                 the amount of Realized Losses and the portion of the Junior
                 Bond Write Down Amount, if any, to be allocated to each
                 Individual Bond of a Class of such Series;

                      (ix)        Reserved

                       (x)        Reserved

                      (xi)        Reserved

                     (xii)        Reserved

                    (xiii)        the amount, if any, to be withdrawn from the
                 Collection Account by the Trustee in respect of the following
                 Payment Date pursuant to Section 8.2(d);

                     (xiv)        the amount, if any, to be withdrawn from the
                 Collection Account and paid over to any firm of Independent
                 Accountants in respect of the following Payment Date pursuant
                 to Section 8.2(d);

                      (xv)        Reserved

                     (xvi)        the amount, if any, to be withdrawn from the
                 Collection Account after such following Payment Date and
                 transferred to the Expense Fund pursuant to Section 8.2(d);

                    (xvii)        the amount, if any, to be withdrawn from the
                 Collection Account and paid over to the Issuer or its assignee
                 or the Residual Interest Holders in respect of the following
                 Payment Date pursuant to Section 8.2(d); and

                   (xviii)        the Class Imputed Principal Balance and the
                 Class Current Principal Amount of the Bonds of each Class of
                 such Series which will remain after giving effect to the
                 payments and allocating all Realized Losses and Junior Bond
                 Write Down Amounts to be made or allocated on such Payment
                 Date (and, in the case of Compound Interest Bonds, after
                 giving effect to the interest accrued during the Inter-





                                      -43-
<PAGE>   49
                 est Accrual Period for such Payment Date and added to the
                 principal thereof) expressed both on an aggregate basis and
                 per Individual Bond.

                 Each Payment Date Statement shall be delivered by the Trustee
         to the Issuer and, where required by the applicable Series Supplement,
         to the firm of Independent Accountants appointed by the Issuer
         pursuant to Section 8.9(a).  If the actual amount of Distributions
         received by the Trustee on a Distribution Date differs from the
         expected amount of Distributions used by the Trustee in accordance
         with Section 1.3(b) or 1.3(c), whichever is applicable, in determining
         the Debt Service Requirement for a Payment Date, the Trustee shall
         immediately on such Distribution Date (i) recompute all amounts in the
         related Payment Date Statement to reflect the actual amount of
         Distributions on such Distribution Date, (ii) revise such Payment Date
         Statement accordingly, and (iii) deliver such revised Payment Date
         Statement to the Issuer and, where required by the applicable Series
         Supplement, to the Independent Accountants.  Upon such delivery, such
         revised Payment Date Statement shall be controlling for all purposes
         under this Indenture.

                 (f)     Not later than the fifth day after the Special Record
         Date applicable to any Special Payment Date for any Overdue Bond of a
         particular Series, the Trustee shall deliver to the Issuer a statement
         (a "Special Payment Date Statement") with respect to such Series 
         setting forth:

                         (i)      the amount of any overdue principal or any
                 overdue portion of the Redemption Price of any Overdue Bond
                 of such Series called for redemption and all unpaid interest 
                 accrued on any Overdue Bonds called for redemption through 
                 the preceding Special Payment Date or the Interest Accrual 
                 Period for the preceding Payment Date (in the case of the 
                 first Special Payment Date after such Bonds became Overdue 
                 Bonds) which was not paid on such preceding Special Payment 
                 Date or Payment Date, expressed both on an aggregate basis and
                 per Individual Bond of each Class included in such Overdue 
                 Bonds,

                        (ii)      the amount of interest due and payable on
                 such Special Payment Date on the overdue portion of the 
                 Redemption Price of any Bond of such Series called for 
                 redemption, expressed both on an aggregate basis and per
                 Individual Bond of each Class included in such Overdue Bonds,

                       (iii)      if such Special Payment Date is all Payment 
                 Date for that Series, the amounts required to be set forth in 
                 clauses (i) through (v) of the Payment Date Statement with
                 respect to such Payment Date,

                        (iv)      whether the amount expected to be on deposit
                 in the related Collection Account and available for payment
                 the Bondholders in accordance with the priorities set forth in
                 Section 8.2(c) on such Special Payment Date and, if 
                 applicable, such Payment Date is sufficient to pay on such
                 Special Payment Date all amounts specified in clauses (i) 
                 through (iii) above, and, if not, the percentages of





                                      -44-
<PAGE>   50
                 each amount specified in clauses (i) through (iii) above which
                 may be paid, in accordance with the priorities set forth in
                 said Section 8.2(c), from the amount expected to be on deposit
                 in the Collection Account for such Series on such Special
                 Payment Date and, if applicable, such Payment Date, and

                         (v)      the amounts included in such Special Payment
                 Date Statement pursuant to clauses (i) through (iii) above,
                 expressed in each case per Individual Bond of each Class of
                 Bonds of such Series covered by such Special Payment Date
                 Statement which will remain unpaid after giving effect to
                 payment of the amounts expected to be on deposit in the
                 related Collection Account and available for payment on such
                 Special Payment Date and, if applicable, such Payment Date.

         SECTION 2.10     Persons Deemed Owners.

         Prior to due presentment for registration of transfer of any Bond, the
Issuer, the Trustee, any Agent and any other agent of the Issuer or the Trustee
may treat the Person in whose name any Bond is registered as the owner of such
Bond (a) on the applicable Record Date or Special Record Date for the purpose
of receiving payments of the principal of and interest on such Bond and (b) on
any other date for all other purposes whatsoever, whether or not such Bond is
an Overdue Bond, and neither the Issuer, the Trustee, any Agent nor any other
agent of the Issuer or the Trustee shall be affected by notice to the contrary.

         SECTION 2.11     Cancellation.

         All Bonds surrendered for payment, registration of transfer, exchange
or redemption shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee and shall be promptly cancelled by it.  The Issuer may
at any time deliver to the Trustee for cancellation any Bond previously
authenticated and delivered hereunder which the Issuer may have acquired in any
manner whatsoever, and all Bonds so delivered shall be promptly cancelled by
the Trustee.  No Bonds shall be authenticated in lieu of or in exchange for any
Bonds cancelled as provided in this Section, except as expressly permitted by
this Indenture. All cancelled Bonds held by the Trustee shall be held by the
Trustee in accordance with its standard retention policy, unless the Issuer
shall direct by an Issuer Order that they be destroyed or returned to it.

         SECTION 2.12     Authentication and Delivery of Bonds.

         Bonds of any one or more Series may from time to time be executed by
the Issuer and delivered to the Trustee for authentication, and thereupon the
same shall be authenticated and delivered by the Trustee, upon Issuer Request
and upon receipt by the Trustee of the following:

                 (a)      an Issuer Resolution authorizing the execution,
         authentication and delivery of such Bonds and the related Series
         Supplement;





                                      -45-
<PAGE>   51
                 (b)      in case the Bonds to be authenticated and delivered
         are of any Series not theretofore created, an appropriate Series
         Supplement, accompanied by an Issuer Resolution authorizing such
         Series Supplement (and, in the case of the first Series to be
         authenticated and delivered hereunder, authorizing this Indenture),
         designating the new Series to be created and prescribing, consistent
         with the applicable provisions of this Indenture, the terms and
         provisions relating to the Bonds of such Series;

                 (c)      Opinions of Counsel addressed to the Trustee,
         complying with the requirements of Section 11.1, and, except to the
         extent provided otherwise in the related Series Supplement, to the
         effect that:

                          (i)     all instruments furnished to the Trustee in
                 connection with such Bonds conform to the requirements of this
                 Indenture and constitute all the documents required to be
                 delivered hereunder for the Trustee to authenticate and
                 deliver the Bonds then applied for;

                          (ii)    all conditions precedent provided for in this
                 Indenture relating to the authentication and delivery of the
                 Bonds applied for have been complied with;

                          (iii)   the Issuer has corporate power to execute and
                 deliver the Series Supplement relating to such Bonds (and, in
                 the case of the first Series to be authenticated and delivered
                 hereunder, this Indenture), and to issue such Bonds and has
                 duly taken all necessary corporate action for those purposes;

                          (iv)    assuming due execution and delivery thereof
                 by the Trustee, this Indenture and the related Series
                 Supplement, as executed and delivered by the Issuer, are the
                 valid, legal and binding obligations of the Issuer,
                 enforceable in accordance with their terms, subject to
                 bankruptcy, reorganization, insolvency, arrangement,
                 moratorium, fraudulent or preferential conveyance and other
                 similar laws of general application affecting the enforcement
                 of creditors' rights generally and to general principles of
                 equity (regardless whether such enforceability is considered
                 in a proceeding in equity or at law); and the execution of
                 such Series Supplement is authorized or permitted by Section
                 9.1 of this Indenture;

                          (v)     the Bonds then applied for, when issued,
                 delivered, authenticated and paid for, will be the valid,
                 legal and binding non-recourse obligations of the Issuer,
                 entitled to the benefits of this Indenture and the related
                 Series Supplement, equally and ratably with all other Bonds of
                 such Series, except to the extent specified otherwise in the
                 related Series Supplement, if any, theretofore issued,
                 authenticated, delivered and paid for and then Outstanding
                 hereunder, and enforceable in accordance with their terms,
                 subject to bankruptcy, reorganization, insolvency,
                 arrangement, moratorium, fraudulent or preferential conveyance
                 and other similar laws of general application affecting the
                 enforcement of creditors' rights generally





                                      -46-
<PAGE>   52
                 and to general principles of equity (regardless whether such
                 enforceability is considered in a proceeding in equity or at
                 law);

                          (vi)    if a Guaranty Agreement applies to such
                 Series, such Guaranty Agreement has been duly executed and
                 delivered by the Guarantor and constitutes a valid, legal and
                 binding obligation of the Guarantor enforceable in accordance
                 with its terms, subject to bankruptcy, reorganization,
                 insolvency, arrangement, moratorium, fraudulent or
                 preferential conveyance and other similar laws of general
                 application affecting creditors' rights generally and to
                 general principles of equity (regardless of whether such
                 enforceability is considered in a proceeding at law or in
                 equity);

                          (vii)   the Issuer has corporate power and authority
                 to Grant the Trust Estate for such Series to the Trustee as
                 security for the Bonds of such Series and has duly authorized
                 such Grant to the Trustee by all necessary corporate action;

                          (viii)  the Series Supplement delivered to the
                 Trustee with such Opinion of Counsel creates a valid lien
                 and/or security interest in and subjects the Certificates
                 securing such Series and all proceeds therefrom and the
                 Pledged Accounts or Funds for such Series to the lien and
                 security interest of this Indenture;

                          (ix)    such action has been taken with respect to
                 delivery of possession of the Trust Estate and with respect to
                 the recording and filing of this Indenture, the Series
                 Supplement for such Series, any other indentures supplemental
                 hereto and any other requisite documents and with respect to
                 the execution and filing of any financing statements as is
                 necessary to make effective and to perfect a first priority
                 lien and security interest created by this Indenture in the
                 Trust Estate for such Series, with either the details of such
                 action being recited therein, or the absence of any such
                 action being necessary to make such lien and security interest
                 effective and perfected being stated therein; and, with any
                 recording, filing, re-recording and re-filing of this
                 Indenture, the Series Supplement for such Series, any other
                 indentures supplemental hereto and any other requisite
                 documents and any execution and filing of any financing
                 statements and continuation statements that will, in the
                 opinion of such counsel, be required to maintain the lien and
                 security interest created by this Indenture in the Trust
                 Estate for such Series until February 15 of the year in which
                 the first Opinion of Counsel with respect to such Series is
                 required to be delivered under Section 3.6 being described
                 therein;

                          (x)     this Indenture and the Series Supplement for
                 such Series have been duly qualified under the TIA, or that no
                 qualification of such Indenture under the TIA is necessary;
                 the execution of the Series Supplement for such Series
                 requires the requalification of this Indenture under the TIA,
                 or that no requalification of the Indenture under the TIA is
                 necessary by virtue of the execution of such Series
                 Supplement;





                                      -47-
<PAGE>   53
                          (xi)    the Issuer is not required to register as an
                 "investment company" under the Investment Company Act, as such
                 term is defined thereunder, and the Issuer is not under the
                 "control" of an "investment company," as such terms are
                 defined in the Investment Company Act;

                          (xii)   the Pooling and Administration Agreement for
                 each such Conventional Certificate has been duly authorized,
                 executed and delivered by the Administrator and constitutes
                 the legal, valid and binding agreement of the Administrator
                 enforceable in accordance with its terms, subject to
                 bankruptcy, reorganization, insolvency, arrangement,
                 moratorium, fraudulent or preferential conveyance and other
                 similar laws of general application affecting creditors'
                 rights generally and to general principles of equity
                 (regardless of whether such enforceability is considered in a
                 proceeding at law or in equity);

                          (xiii)  each Conventional Certificate Granted to the
                 Trustee is validly issued and outstanding and entitled to the
                 benefit of the related Pooling and Administration Agreement;

                          (xiv)   no authorization, approval or consent of any
                 governmental body having jurisdiction in the premises which
                 has not been obtained by the Issuer is required for the valid
                 issuance and delivery of the Bonds; and

                          (xv)    if an election or elections has or have been
                 or will be made to treat the Trust Estate securing the Series,
                 or any other assets securing a Series, as identified in such
                 election or elections, as a REMICs, (1) assuming the proper
                 making of each such election, (2) compliance with the
                 pertinent provisions of this Indenture, and (3) continuing
                 compliance with the applicable provisions of the Code, the
                 Trust Estate or such assets will qualify as a REMIC, each
                 Class of Bonds designated in the related Series Supplement as
                 "regular interests" in a REMIC will be treated as "regular
                 interests" in such REMIC and each Class of Bonds or other
                 security designated in the related Series Supplement as a
                 "residual interest" in a REMIC will be treated, in the
                 aggregate, as the single Class of "residual interests" in such
                 REMIC.

                 The Opinion of Counsel delivered to the Trustee at the closing
         of the related Series of Bonds may differ from the Opinion of Counsel
         described in this Section 2.12(c) so long as the Opinion of Counsel so
         delivered is acceptable to each Rating Agency, which shall be
         conclusively evidenced by the delivery at the Closing of each such
         Rating Agency's rating letter.

                 (d)      an Officers' Certificate complying with the
         requirements of Section 11.1 and stating that:





                                      -48-
<PAGE>   54
                          (i)     the Issuer is not in Default under this
                 Indenture and the issuance of the Bonds applied for will not 
                 result in any breach of any of the terms, conditions or 
                 provisions of, or constitute a default under, the Issuer's
                 certificate of incorporation or by-laws or any indenture,
                 mortgage, deed of trust or other agreement or instrument to
                 which the Issuer is a party or by which it is bound, or any
                 order of any court or administrative agency entered in any 
                 proceeding to which the Issuer is a party or by which it may be
                 bound or to which it may be subject;

                          (ii)    all conditions precedent provided in this
                 Indenture relating to the authentication and delivery of the
                 Bonds applied for have been complied with;

                          (iii)   the Issuer is the owner of each Certificate
                 securing such Series, has not assigned any interest or
                 participation in any such Certificate (or, if any such
                 interest or participation has been assigned, it has been
                 released) and has the right to Grant each such Certificate to
                 the Trustee;

                          (iv)    the Issuer has Granted to the Trustee all of
                 its right, title, and interest in each such Certificate; and

                          (v)     attached thereto are true and correct copies
                 of letters signed by one or more nationally recognized
                 statistical rating agencies confirming that the Bonds of such
                 Series have been rated in the rating category specified for
                 such Class in the Prospectus Supplement or Private Placement
                 Memorandum (as applicable) relative to such Series by each
                 such rating agency.

                 (e)      [Reserved]

                 (f)      All of the Certificates and any other assets to be
         included in a Collateral Group securing such Series, or, in the case
         of Uncertificated Certificates, Advices issued for each such
         Uncertificated Certificate by the Person or Persons in whose name such
         Uncertificated Certificate is registered, in each case as listed on
         Schedule A to the applicable Series Supplement; which Certificates,
         assets and Uncertificated Certificates

                          (i)     shall have

                                  (A)      an aggregate initial Certificate
                          Principal Amount at least equal to the aggregate
                          initial Original Principal Amount of the Bonds
                          proposed to be authenticated and delivered, and

                                  (B)      aggregate scheduled Distributions on
                          each Distribution Date which, together with

                                        (1)     the amount, if any, to be
                                  deposited in the Collection Account on the
                                  Closing Date pursuant to clause (g) below,





                                      -49-
<PAGE>   55
                                        (2)     income that can be earned from
                                  the reinvestment of Distributions and to
                                  which the Bondholders are entitled (as
                                  specified in the related Series Supplement)
                                  and all other amounts receivable with respect
                                  to the assets securing such Series, computed
                                  as described in subsection (e)(i)(E) above,
                                  and

                                        (3)     all other amounts, if any,
                                  available for such purpose and required
                                  hereby or by the related Series Supplement to
                                  be deposited in the Collection Account on or
                                  prior to the Payment Date immediately
                                  following the related Distribution Date, are
                                  sufficient,

                          when applied, in accordance with the terms hereof and
                          the related Series Supplement, to payments of
                          principal of and interest on the Bonds (under the
                          Maximum Bond Interest Rate Assumption if such Series
                          of Bonds includes a Class or Classes of Variable Rate
                          Bonds),

                                        (1)     to pay on each Payment Date for
                                  such Series  (after deduction of all fees and
                                  expenses then due to the Trustee pursuant to
                                  the related Series Supplement) all interest
                                  (under the Maximum Bond Interest Rate
                                  Assumption if such Series of Bonds includes a
                                  Class or Classes of Variable Rate Bonds) then
                                  due and payable on the Bonds proposed to be
                                  authenticated and delivered, and

                                        (2)     to pay the entire principal
                                  amount of each Class of such Bonds on or
                                  prior to the Stated Maturity of the final
                                  installment of principal thereof;

         The certificate delivered to the Trustee pursuant to Section 2.12(d)
shall conclusively evidence compliance with such requirement.

                          (ii)   shall otherwise satisfy each of the
                 requirements established for such Certificates in the related
                 Series Supplement; and

                          (iii)  shall have been registered in the name of the
                 Trustee (or, if requested by the Trustee, in the name of a
                 Qualified Nominee); provided, that the Issuer may, at its sole
                 option, instead request the Trustee to cause all of such
                 Certificates to be so registered promptly following the
                 Closing Date for such Series, in which event such Certificates
                 shall be accompanied by such powers and shall otherwise be in
                 such form as shall permit the registration thereof in the name
                 of the Trustee or its Qualified Nominee without the taking of
                 any further action other than presentation for registration of
                 transfer and payment of the applicable fees in connection
                 therewith.  (The Trustee, by its acceptance of such
                 Certificates, shall be deemed to have agreed to present them
                 for registration of transfer no later than the opening of
                 business on the last Business Day of the Month of Closing and
                 to pay the





                                      -50-
<PAGE>   56
                 applicable transfer fees, subject to its right of
                 reimbursement under Section 6.7); and, provided, further that
                 in the case of Certificates issuable in book-entry form only,
                 in lieu of delivering such Certificates the Issuer shall take
                 such actions to effect the Grant thereof to the Trustee as are
                 specified in the related Series Supplement.

                 (g)      Cash in the amount, if any, required by the terms of
         the related Series Supplement to be deposited in the Collection
         Account for such Series and held by the Trustee and applied in
         accordance with Section 8.2, and if there is an Expense Fund for such
         Series, cash or Eligible Investments in the amount specified in the
         related Series Supplement.

                 (h)      [Reserved]

                 (i)      Such certificates, insurance policies, surety bonds,
         instruments, opinions or other documents as may be required by the
         terms of the Series Supplement creating such Series.

                 (j)      If such Series or any Class or Classes of such Series
         is directly insured, guaranteed or otherwise backed, the Guaranty
         Agreement for such Series.

                 (k)      A certificate of an Independent Person appointed by
         an Issuer Order, whose regular business activity includes valuing
         securities similar to the Certificates securing such Series, as to the
         fair market value of such Certificates, which determination of fair
         market value shall, unless otherwise provided in the related Series
         Supplement, be based upon generally available market quotations as of
         a date not earlier than three Business Days prior to the related
         Closing Date.

                 (l)      Such other documents, certificates, instruments or
         opinions as may be required by the terms of the Series Supplement
         creating such Series of Bonds.

         SECTION 2.13     Book Entry Bonds.

         Unless provided otherwise in the related Series Supplement, each Class
of Bonds subject to redemption at the request of Bondholders shall, and any
other class of any Series, may, if specified in the related Series Supplement,
be issued initially as a single certificate in the name of a Clearing Agency
maintaining book entry records with respect to ownership and transfer of such
Bonds, or its nominee, or a custodian bank of such Clearing Agency, or its
nominee, and registration of such Bonds may not be transferred by the Trustee
or Bond Registrar except under the conditions, if any, described in the related
Series Supplement.  In such case, the Trustee shall deal with the Clearing
Agency and Clearing Agency Participants as representatives of the Beneficial
Owners of such Bonds for purposes of exercising the rights of Bondholders
hereunder, as provided in the related Series Supplement.  Requests and
directions from, and votes of, such representatives shall not be deemed to be
inconsistent if they are made with respect to different Beneficial Owners.





                                      -51-
<PAGE>   57
         SECTION 2.14     Termination of Book Entry System.

                 (a)      Except as otherwise provided in the related Series
         Supplement, the book entry system through the Clearing Agency with
         respect to any Class of Book Entry Bonds may be terminated upon the
         happening of any of the following:

                          (i)     The Clearing Agency or the Issuer advises the
                 Trustee that the Clearing Agency is no longer willing or able
                 to properly discharge its responsibilities under the
                 respective Letter Agreement and the Issuer is unable to locate
                 a qualified successor clearing agency satisfactory to the
                 Trustee and the Issuer;

                         (ii)     The Issuer, in its sole discretion but with
                 the consent of the Trustee, elects to terminate the book entry
                 system by notice to the Clearing Agency and the Trustee; or

                        (iii)     After the occurrence of an Event of Default
                 (at which time the Trustee shall use all reasonable efforts to
                 promptly notify each Beneficial Owner through the Clearing
                 Agency of such Event of Default when such notice shall be
                 given pursuant to Section 6.2, the Beneficial Owners of a
                 majority in Aggregate Current Principal Amount of the Book
                 Entry Bonds advise the Trustee in writing, through the related
                 Clearing Agency Participants and the Clearing Agency, that the
                 continuation of a book entry system through the Clearing
                 Agency to the exclusion of any Definitive Bond certificates
                 being issued to any person other than the Clearing Agency or
                 its nominee is no longer in the best interests of the
                 Beneficial Owners.

                 (b)      Upon the occurrence of any event described in
         subsection (a) above, the Trustee shall use all reasonable efforts to
         notify all Beneficial Owners, through the Clearing Agency, of the
         occurrence of such event and of the availability of Definitive Bond
         certificates to Beneficial Owners requesting the same, in an Aggregate
         Current Principal Amount representing the interest of each, making
         such adjustments and allowances as it may find necessary or
         appropriate as to accrued interest and previous calls for redemption
         or special redemption.  Definitive Bond certificates shall be issued
         only upon surrender to the Trustee of the Bond by the Clearing Agency,
         accompanied by registration instructions for the Definitive Bond
         certificates.  Neither the Issuer nor the Trustee shall be liable for
         any delay in delivery of such instructions and may conclusively rely
         on, and shall be protected in relying on, such instructions.  Upon
         issuance of the Definitive Bond certificates, all references herein
         and in the Series Supplement to obligations imposed upon or to be
         performed by the Clearing Agency shall cease to be applicable and the
         provisions relating to Definitive Bonds shall be applicable.





                                      -52-
<PAGE>   58
         SECTION 2.15     Restrictions on Transfer of Certain Classes of Bonds.

                 (a)      No legal or beneficial interest in all or any portion
         of any Residual Bonds of any Series may be transferred directly or
         indirectly to (i) a Disqualified Organization or an agent of a
         Disqualified Organization (including a broker, nominee, or middleman),
         (ii) 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 (a "Book-Entry Nominee"), or (iii) an individual,
         corporation, partnership or other person unless such transferee (A) is
         not a Non-U.S. Person or (B) is a Non-U.S. Person that will hold such
         Residual Bond in connection with the conduct of a trade or business
         within the United States and has furnished the transferor and the
         Trustee with an effective Internal Revenue Service Form 4224 or (C) is
         a Non-U.S. Person that has delivered to both the transferor and the
         Trustee an opinion of a nationally recognized tax counsel to the
         effect that the transfer of a Residual Bond to it is in accordance
         with the requirements of the Code and the regulations promulgated
         thereunder and that such transfer of a Residual Bond will not be
         disregarded for federal income tax purposes (any such person who is
         not covered by clause (A), (B) or (C) above being referred to herein
         as  "Non-permitted Foreign Holder"), and any such purported transfer
         shall be void and have no effect.  The Trustee shall not authenticate
         and deliver a Residual Bond in connection with any transfer thereof
         unless the transferor shall have provided to the Trustee an affidavit,
         substantially in the form attached as Exhibit B to the related Series
         Supplement, signed by the transferee.

                 The affidavit described in the preceding paragraph, if not
         executed in connection with the initial issuance of the Residual Bonds
         of any relevant Series, shall be accompanied by a written statement in
         the form attached as Exhibit E to the related Series Supplement,
         signed by the transferor of any such Residual Bond.  The Residual
         Bonds (if any) of each Series shall bear a legend referring to the
         foregoing restrictions contained in this paragraph and the preceding
         paragraph.

                 Upon written notice to the Trustee that any legal or
         beneficial interest in any portion of a Residual Bond of any Series
         has been transferred, directly or indirectly, to a Disqualified
         Organization or agent thereof (including a broker, nominee, or
         middleman) in contravention of the foregoing restrictions, (i) such
         transferee shall be deemed to hold such Residual Bond in constructive
         trust for the last transferor who was not a Disqualified Organization
         or agent thereof, and such transferor shall be restored as the owner
         of such Residual Bond as completely as if such transfer had never
         occurred, provided that the Trustee may, but is not required to,
         recover any payments made to such transferee with respect to such
         Residual Bond and return such recovery to the transferor, and (ii) the
         Trustee agrees, at the Issuer's expense, to furnish to the Internal
         Revenue Service and to any transferor of such Residual Bond or such
         agent (within 60 days of the request therefor by the transferor or
         agent) such information necessary to the application of Section
         860E(e) of the Code as may be required by the Code, including but not
         limited to the present value of the total anticipated excess
         inclusions with respect to such Residual Bond (or portion thereof) for
         periods after such transfer.  At the election of the Trustee, the cost
         to the Trustee of computing and furnishing





                                      -53-
<PAGE>   59
         such information may be charged to the transferor or such agent
         referred to above; however, the Trustee shall in no event be excused
         from furnishing such information.

                 The restrictions on transfers of the Residual Bonds of any
         Series set forth in the preceding three paragraphs shall cease to
         apply to transfers (and the applicable portions of the legend to such
         Residual Bonds may be deleted) after delivery to the Trustee of an
         Opinion of Counsel to the effect that the elimination of such
         restrictions will not cause a REMIC Loss.

                 (b)      No transfer of a Restricted Bond of any Series shall
         be made unless such transfer is exempt from the registration
         requirements of the Securities Act of 1933, as amended (the "Act"),
         and any applicable state securities laws, or is made in accordance
         with the Act and any applicable state securities laws.  As a condition
         precedent to the transfer of a Restricted Bond, (i) the Trustee shall
         require a written opinion of counsel, which counsel shall be
         acceptable to the Trustee, that such transfer may be made pursuant to
         an exemption from the Act and any applicable state securities laws
         (which opinion shall not be at the expense of the Trustee) or (ii) the
         Trustee shall require the transferee to execute an investment letter
         in the form substantially as set forth in Exhibit F to the related
         Series Supplement or in such other form as may be acceptable to the
         Trustee, certifying as to the facts surrounding such transfer.  The
         holder of any Restricted Bond desiring to effect the transfer thereof
         shall, and hereby agrees to, indemnify the Trustee and the Issuer
         against any liability that may result if the transfer thereof is not
         so exempt or is not made in accordance with such federal and state
         laws.  Such agreement to so indemnify the Trustee and the Issuer shall
         survive the termination of this Agreement.

                 (c)      No transfer of an ERISA Restricted Bond (if any) of a
         Series shall be made to any Person unless the Trustee has received (A)
         either (i) a certificate substantially in the form required by the
         related Series Supplement, from such transferee to the effect that
         such transferee is not a Plan or a Person that is using the assets of
         a Plan to acquire such ERISA Restricted Bond or (ii) a certificate in
         such form and substance as shall be satisfactory to the Trustee and
         the Issuer in lieu of the Certificate required by the related Series
         Supplement or (B) an opinion of counsel, which counsel shall be
         satisfactory to the Trustee and the Issuer to the effect that the
         purchase and holding of such ERISA Restricted Bond will not constitute
         or result in the assets of the Trust Estate being deemed to be "plan
         assets" subject to the prohibited transactions provisions of ERISA or
         Section 4975 of the Code and will not subject the Trustee, the
         Certificate Trustee, the Administrator relative to such Series or the
         Issuer to any obligation in addition to those undertaken in this
         Indenture or in the related Pooling and Administration Agreement;
         provided, however, that the Trustee will not require such certificate
         or opinion if, as a result of a change of law or otherwise, counsel
         satisfactory to the Trustee has rendered an opinion to the effect that
         the purchase and holding of an ERISA Restricted Bond by a Plan or a
         Person that is purchasing or holding such ERISA Restricted Bond with
         the assets of a Plan will not constitute or result in a prohibited
         transaction under ERISA or Section 4975 of the Code.  The preparation
         and delivery of the certificate and





                                      -54-
<PAGE>   60
         opinions referred to above shall not be an expense of the Trust
         Estate, the Trust, the Certificate Trustee, the Administrator relative
         to such Series or the Issuer.

                          (i)     No transfer of an ERISA Prohibited Bond shall
                 be made to any Person unless the Trustee has received a
                 certificate (substantially in the form of Exhibit B to the
                 related  Series Supplement in the case of a Residual Bond, or
                 containing a certification substantially as set forth in
                 paragraph 17 of Exhibit B to the related Series Supplement, in
                 the case of an ERISA Prohibited Bond that is not a Residual
                 Bond) from such transferee to the effect that, among other
                 things, such transferee is not a Plan or a Person that is
                 using the assets of a Plan to acquire any such Bond.  The
                 preparation and delivery of such certificate shall not be an
                 expense of the Trust Estate, the Trustee, the Issuer.

                 (d)      Subject to Section 6.1 hereof, the Trustee may
         conclusively rely upon any certificate, affidavit or opinion delivered
         pursuant to Section 2.15(a), (b), or (c).





                                      -55-
<PAGE>   61
                                  ARTICLE III

                                   COVENANTS

         SECTION 3.1      Payment of Bonds.

         The Issuer will pay or cause to be duly and punctually paid the
principal of, and interest on, the Bonds of each Series in accordance with the
terms of such Bonds and this Indenture.  The Bonds of each Series shall be non-
recourse obligations of the Issuer and shall be limited in right of payment to
amounts available from the Trust Estate relative to such Series as provided in
this Indenture and the Issuer shall not otherwise be liable for payments on the
Bonds.  No person shall be personally liable for any amounts payable under the
Bonds.  If any other provision of this Indenture conflicts or is deemed to
conflict with the provisions of this Section 3.1, the provisions of this
Section 3.1 shall control.

         SECTION 3.2      Maintenance of Office or Agency.

         The Issuer will maintain in the Borough of Manhattan, the City of New
York, the State of New York an office or agency where Bonds may be presented or
surrendered for payment or may be surrendered for registration of transfer or
exchange, and where notices and demands to or upon the Issuer in respect of the
Bonds and this Indenture may be served.  The Issuer will give prompt written
notice to the Trustee of the location and any change in the location of such
office or agency.  Until written notice of any change in the location of such
office or agency is delivered to the Trustee or if at any time the Issuer shall
fail to maintain any such required office or agency or shall fail to furnish
the Trustee with the address thereof, Bonds may be so presented or surrendered,
and such notices and demands may be made or served, at the New York Office, and
the Issuer hereby appoints the New York Agent as its agent in the City of New
York, for the foregoing purposes.

         The Issuer may also from time to time designate one or more other
offices or agencies (in or outside the City of New York) where the Bonds may be
presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that (i) no such designation or
rescission shall in any manner relieve the Issuer of its obligation to maintain
an office or agency in the Borough of Manhattan, the City of New York, the
State of New York for the purposes set forth in the preceding paragraph, (ii)
presentations or surrenders of Bonds for payment may be made only in the City
of New York, the State of New York and (iii) any designation of an office or
agency for payment of Bonds shall be subject to Section 3.3.  The Issuer will
give prompt written notice to the Trustee of any such designation or rescission
and of any change in the location of any such other office or agency.





                                      -56-
<PAGE>   62
         SECTION 3.3      Money for Bond Payments to Be Held in Trust.

         All payments of amounts due and payable with respect to any Bonds
which are to be made from amounts withdrawn from the related Collection Account
pursuant to Section 8.2(c) or Section 5.8 shall be made on behalf of the Issuer
by the Trustee or by a Paying Agent, and no amounts so withdrawn from a
Collection Account for payments of Bonds shall be paid over to the Issuer under
any circumstances except as provided in this Section 3.3 or in Section 5.8.

         When the Issuer shall have a Paying Agent for a Series that is not
also the Bond Registrar for such Series, it shall furnish, or cause the Bond
Registrar for such Series to furnish, no later than

                 (a)      the fifth calendar day after each Record Date for
         such Series, and

                 (b)      the fifth calendar day after each Special Record Date
         applicable to a Special Payment Date for such Series,

a list, in such form as such Paying Agent may reasonably require, of the names
and addresses of the Holders of Bonds of such Series and of the number of
Individual Bonds of each Class of such Series held by each such Holder.

         Whenever the Issuer shall have a Paying Agent other than the Trustee,
it will, on or before the Business Day next preceding each Payment Date and
Special Payment Date for each Series of Bonds, direct the Trustee to deposit
with such Paying Agent an aggregate sum sufficient to pay the amounts then
becoming due (to the extent funds are then available for such purpose in the
Collection Account for such Series), such sum to be held in trust for the
benefit of the Persons entitled thereto. Any moneys deposited with a Paying
Agent in excess of an amount sufficient to pay the amounts then becoming due on
the Bonds with respect to which such deposit was made shall, upon Issuer Order,
be paid over by such Paying Agent to the Trustee for application in accordance
with Article VIII.

         Any Paying Agent shall be appointed by Issuer Order.  The Issuer shall
not appoint any Paying Agent (other than the Trustee) which is not, at the time
of such appointment, a depository institution or trust company whose
obligations would be Eligible Investments pursuant to clause (ii) of the
definition of the term "Eligible Investment".  In the event that the Trustee is
acting as Paying Agent and the Trustee resigns as Trustee with respect to one
or more Series of Bonds (or to the extent permitted in any Series Supplement,
with respect to one or more Classes within a Series), the Trustee may resign as
Paying Agent with respect to the Bonds of such Series or Classes, as
applicable.  The Issuer will cause each Paying Agent other than the Trustee to
execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee (and if the Trustee acts as Paying Agent, it
hereby so agrees), subject to the provisions of this Section, that such Paying
Agent will:

                 (1)      allocate all sums received for payment to the Holders
         of Bonds of each Series for which it is acting as Paying Agent on each
         Payment Date and Special Payment Date





                                      -57-
<PAGE>   63
         among such Holders in the proportion specified in the applicable
         Payment Date Statement and Special Payment Date Statement, as the case
         may be, in each case to the extent permitted by applicable law;

                 (2)      hold all sums held by it for the payment of amounts
         due with respect to the Bonds in trust for the benefit of the Persons
         entitled thereto until such sums shall be paid to such Persons or
         otherwise disposed of as herein provided and pay such sums to such
         Persons as herein provided;

                 (3)      if such Paying Agent is not the Trustee, immediately
         resign as a Paying Agent and forthwith pay to the Trustee all sums
         held by it in trust for the payment of Bonds if at any time it ceases
         to meet the standards set forth above required to be met by a Paying
         Agent at the time of its appointment;

                 (4)      if such Paying Agent is not the Trustee, give the
         Trustee notice of any Default by the Issuer (or any other obligor upon
         the Bonds) in the making of any payment required to be made with
         respect to any Series of Bonds for which it is acting as Paying Agent;

                 (5)      if such Paying Agent is not the Trustee, at any time
         during the continuance of any such Default, upon the written request
         of the Trustee, forthwith pay to the Trustee all sums so held in trust
         by such Paying Agent; and

                 (6)      comply with all requirements of the Code with respect
         to the withholding from any payments made by it on any Bonds of any
         applicable withholding taxes imposed thereon and with respect to any
         applicable reporting requirements in connection therewith; provided,
         however, that with respect to withholding and reporting requirements
         applicable to original issue discount (if any) on any Class of Bonds,
         the Issuer shall have first provided the calculations pertaining
         thereto to the Trustee.

         The Issuer may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, by
Issuer Order direct any Paying Agent, if other than the Trustee, to pay to the
Trustee all sums held in trust by such Paying Agent, such sums to be held by
the Trustee upon the same trusts as those upon which such sums were held by
such Paying Agent; and upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such money.

         Except as provided by applicable law, any money held by the Trustee or
any Paying Agent in trust for the payment of any amount due with respect to any
Bond and remaining unclaimed for two and one-half years after such amount has
become due and payable to the Holder of such Bond (or, if earlier, three months
prior to the date on which such amount would escheat to a governmental entity
under applicable law) shall be discharged from such trust and paid to the
Issuer; and the Holder of such Bond shall thereafter, as an unsecured general
creditor, look only to the Issuer for payment thereof (but only to the extent
of the amounts so paid to the Issuer), and all liability of the Trustee or such
Paying Agent with respect to such trust money shall thereupon cease; provided,





                                      -58-
<PAGE>   64
however, that if an election has been or will be made to treat the Trust Estate
securing the Series or any other assets specified in a REMIC election relative
to such Series, as a REMIC, any such unclaimed funds shall be paid to the state
pursuant to applicable escheat laws and in such event the Holder of such Bond
shall thereafter look only to such state for payment thereof and all liability
of the Issuer, the Trustee or such Paying Agent with respect to such trust
money shall thereupon cease.  The Trustee may adopt and employ, at the expense
of the Issuer, any reasonable means of notification of such repayment
(including, but not limited to, mailing notice of such repayment to Holders
whose Bonds have been called but have not been surrendered for redemption or
whose right to or interest in moneys due and payable but not claimed is
determinable from the records of the Trustee or any Agent, at the last address
of record for each such Holder).

         SECTION 3.4      Corporate Existence.

                 (a)      Subject to Section 3.4(b) and (c), the Issuer will
         keep in full effect its existence, rights and franchises as a
         corporation under the laws of the State of Delaware or under the laws
         of any other state or the United States of America, and will obtain
         and preserve its qualification to do business as a foreign corporation
         in each jurisdiction in which such qualification is or shall be
         necessary to protect the validity and enforceability of this
         Indenture, the Bonds or any of the Certificates.

                 (b)      Any corporation into which the Issuer hereunder may
         be merged or with which it may be consolidated, or any corporation
         resulting from any merger or consolidation to which such Issuer
         hereunder shall be a party, shall be the successor Issuer under this
         Indenture without the execution or filing of any paper, instrument or
         further act to be done on the part of the parties hereto, anything
         herein, or in any agreement relating to such merger or consolidation,
         by which any such Issuer may seek to retain certain powers, rights and
         privileges theretofore obtaining for any period of time following such
         merger or consolidation, to the contrary notwithstanding.

                 (c)      Upon any consolidation or merger of or other
         succession to the Issuer in accordance with Section 3.4(b) hereof, the
         Person formed by or surviving such consolidation or merger (if other
         than the Issuer) may exercise every right and power of the Issuer
         under this Indenture with the same effect as if such Person had been
         named as the Issuer herein.

         SECTION 3.5      Protection of Trust Estate.

         The Issuer will from time to time execute and deliver all such
supplements and amendments hereto and all such financing statements,
continuation statements, instruments of further assurance, and other
instruments, and will take such other action as may be necessary or advisable
to

                 (i)      Grant more effectively all or any portion of a Trust
         Estate,

                 (ii)     maintain or preserve the lien of this Indenture or
         carry out more effectively the purposes hereof,





                                      -59-
<PAGE>   65
                 (iii)    perfect, publish notice of, or protect the validity
         of, any Grant made or to be made by this Indenture,

                 (iv)     enforce any of the Certificates, or

                 (v)      preserve and defend title to any Certificate or other
         instrument included in a Trust Estate and the rights of the Trustee,
         and of the Bondholders of the Series secured thereby, in such
         Certificate or other instrument against the claims of all persons and
         parties.

The Issuer hereby designates the Trustee its agent and attorney-in-fact to
execute, upon the Issuer's failure to do so, any financing statement,
continuation statement or other instrument required pursuant to this Section
3.5; provided, however, that such designation shall not be deemed to create a
duty in the Trustee to monitor the compliance of the Issuer with the foregoing
covenants and provided, further, that the duty of the Trustee to execute any
instrument required pursuant to this Section 3.5 shall arise only if the
Trustee has knowledge of any failure of the Issuer to comply with the
provisions of this Section 3.5.

         SECTION 3.6      Opinions as to Trust Estate.

         On or before February 15 in each calendar year, the Issuer shall
furnish to the Trustee an Opinion of Counsel either stating that, in the
opinion of such counsel, such action has been taken with respect to the
recording, filing, re-recording and re-filing of this Indenture, any indentures
supplemental hereto and any other requisite documents and with respect to the
execution and filing of any financing statements and continuation statements as
is necessary to maintain the lien and security interest created by this
Indenture with respect to the Trust Estate for such Series and reciting the
details of such action or stating that in the opinion of such counsel no such
action is necessary to maintain such lien and security interest.  Such Opinion
of Counsel shall also describe the recording, filing, re-recording and
re-filing of this Indenture, any indentures supplemental hereto and any other
requisite documents and the execution and filing of any financing statements
and continuation statements that will, in the opinion of such counsel, be
required to maintain the lien and security interest of this Indenture with
respect to the Trust Estate for such Series until February 15 in the following
calendar year.

         The Trustee shall not remove any portion of any Trust Estate that
consists of money or is evidenced by an instrument, certificate or other
writing from the jurisdiction in which it was held at the date the most recent
opinion of Counsel was delivered pursuant to this Section 3.6 (or from the
jurisdiction in which it was held as described in the Opinion of Counsel
delivered at the Closing Date pursuant to Section 2.12(c), if no Opinion of
Counsel has yet been delivered pursuant to this Section 3.6) or cause or permit
ownership or the pledge of any portion of the Trust Estate that consists of
book-entry securities to be recorded on the books of a Person located in a
different jurisdiction from the jurisdiction in which such ownership or pledge
was recorded at such date unless the Trustee shall have first received an
Opinion of Counsel to the effect that the lien and security interest





                                      -60-
<PAGE>   66
created by this Indenture with respect to such property will continue to be
maintained after giving effect to such action or actions.

         SECTION 3.7      Performance of Obligations.

         The Issuer will not take any action or permit any action to be taken
by others which would release any Person from any of such Person's covenants or
obligations under any instrument included in a Trust Estate, or which would
result in the amendment, hypothecation, subordination, termination or discharge
of, or impair the validity or effectiveness of, any such instrument, except as
expressly provided in this Indenture.

         SECTION 3.8      Negative Covenants.

         The Issuer will not:

                 (a)      sell, transfer, exchange or otherwise dispose of any
         portion of a Trust Estate except as expressly permitted by this
         Indenture;

                 (b)      claim any credit on, or make any deduction from, the
         principal of, or interest on, any of the Bonds by reason of the
         payment of any taxes levied or assessed upon any portion of a Trust
         Estate;

                 (c)      (i) engage in any business or activity other than in
         connection with, or relating to, the issuance of Bonds pursuant to
         this Indenture or any Series Supplement or the issuance of bonds
         permitted under clause (d) below, or (ii) amend Article III or VIII of
         its Certificate of Incorporation, as in effect on the Closing Date for
         the initial Series of Bonds, without, in each case, the consent of the
         Holders of not less than 66 2/3% of the Aggregate Current Principal
         Amount of the Bonds of each Series then Outstanding;

                 (d)      issue bonds under any other indenture unless such
         bonds are non-recourse obligations of the Issuer;

                 (e)      incur, assume, guaranty or agree to indemnify any
         indebtedness of any Person, except for such indebtedness as may be
         incurred by the Issuer in connection with the issuance of a Series of
         Bonds pursuant to this Indenture or any Series Supplement or as
         permitted under clause (d) above or indebtedness which, if consisting
         of indebtedness other than Bonds or indebtedness permitted under
         clause (d) above, (i) shall either be (1) subordinate to each Series
         of Bonds issued pursuant to the Indenture or (2) secured by collateral
         other than the Trust Estate and to which the creditor with respect to
         such indebtedness has recourse only to such collateral and not to any
         other assets of the Issuer and (ii) shall provide that the holder
         thereof may not file a petition in any bankruptcy or insolvency
         proceeding with respect to the Issuer until not less than 91 days
         after payment in full of all Outstanding Bonds issued pursuant to this
         Indenture;





                                      -61-
<PAGE>   67
                 (f)      dissolve or liquidate in whole or in part;

                 (g)      merge or consolidate with any corporation other than
         an Affiliate of the Issuer, any such merger or consolidation with an
         Affiliate of the Issuer to be subject to the following conditions:

                          (1)     the surviving or resulting entity shall be a
                 corporation organized under the laws of the United States or
                 any state thereof and its certificate of incorporation shall
                 contain substantially the same restrictions as are contained
                 in Articles III and VIII of the Issuer's Certificate of
                 Incorporation;

                          (2)     the surviving or resulting corporation (if
                 other than the Issuer) shall expressly assume by an indenture
                 supplemental hereto all of the Issuer's obligations hereunder;

                          (3)     the consummation of such merger or
                 consolidation shall not result in the lowering of any rating
                 of the Outstanding Bonds of any Series by the rating agencies
                 that rated the initial Series of Bonds; and

                          (4)     immediately after consummation of the merger
                 or consolidation no Default shall exist with respect to any
                 Series;

                 (h)      (1) permit the validity or effectiveness of this
         Indenture or any Grant under the related Series Supplement to be
         impaired, or permit the lien of this Indenture to be amended,
         hypothecated, subordinated, terminated or discharged with respect to
         any Series, or permit any Person to be released from any covenants or
         obligations with respect to any Series under this Indenture, except as
         may be expressly permitted hereby or by any Series Supplement, (2)
         permit any lien, charge, security interest, mortgage or other
         encumbrance (other than the lien of this Indenture or any Permitted
         Encumbrance) to be created on or extend to or otherwise arise upon or
         burden the Trust Estate for any Series or any part thereof or any
         interest therein or the proceeds thereof, so long as such proceeds
         remain a part of the Trust Estate, or (3) permit the lien of this
         Indenture not to constitute a valid first priority security interest
         in the Trust Estate securing any Series; or

                 (i)      take any action, or omit to take any action, if such
         action or omission may (i) cause any Trust Estate or any other assets
         securing a Series of Bonds and in respect of which a REMIC election
         has been made to fail to qualify as a REMIC during any taxable year,
         or (ii) cause or permit any REMIC relative to any Series to engage in
         any "prohibited transaction" as defined in Section 860F of the Code.

         SECTION 3.9      Annual Statement as to Compliance.

         On or before 120 days after the end of the first fiscal year of the
Issuer which ends more than three months after the Closing Date for a Series,
and each fiscal year thereafter, the Issuer shall





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<PAGE>   68
deliver to the Trustee a brief statement with respect to such Series, signed by
its principal executive officer, principal financial officer or principal
accounting officer, that

                 (1)      a review of the fulfillment by the Issuer during such
         year of its obligations under this Indenture has been made under such
         officer's supervision; and

                 (2)      to the best of such officer's knowledge, based on
         such review, the Issuer has complied with all conditions and covenants
         under this Indenture 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.
         For purposes of this paragraph, such compliance shall be determined
         without regard to any period of grace or requirement of notice
         provided under the Indenture.

         SECTION 3.10     Contribution of Assets.

         Except as otherwise provided in the related Series Supplement, if an
election has been made or will be made to treat the Trust Estate or any other
assets specified in such election securing the related Series as a REMIC,
following the Closing Date, the Trustee shall not accept any contribution of
additional assets to the Trust Estate or such other assets, unless it has
received a Non-Disqualification Opinion with respect thereto and an opinion of
counsel that the contribution will not result in the imposition of a penalty
tax under the Code on the related REMIC.

         SECTION 3.11     Successor Substituted.

         Upon any consolidation or merger in accordance with Section 3.8(g),
the person resulting from or surviving such consolidation or merger (if other
than the Issuer) shall succeed to, and be substituted for, and may exercise
every right and power of the Issuer under the Indenture with the same effect as
if such Person had been named as the Issuer herein.  Promptly upon the
occurrence of any such succession, such Person shall give notice thereof to the
Trustee.





                                      -63-
<PAGE>   69
                                   ARTICLE IV

                           SATISFACTION AND DISCHARGE

         SECTION 4.1      Satisfaction and Discharge of Indenture.

         Whenever the following conditions shall have been satisfied with
respect to a Series:

                 (1)      either

                          (A)     all Bonds of such Series theretofore
                 authenticated and delivered (other than (i) Bonds which have
                 been destroyed, lost or stolen and which have been replaced or
                 paid as provided in Section 2.8, and (ii) Bonds for whose
                 payment money has theretofore been deposited in trust and
                 thereafter repaid to the Issuer, as provided in Section 3.3)
                 have been delivered to the Trustee for cancellation; or

                          (B)     all Bonds of such Series not theretofore
                 delivered to the Trustee for cancellation

                                  (i)      have become due and payable, or

                                  (ii)     will become due and payable at the
                          Stated Maturity of the final installment of the
                          principal thereof within one year, or

                                  (iii)    are to be called for redemption
                          within one year under irrevocable arrangements
                          satisfactory to the Trustee for the giving of notice
                          of redemption by the Trustee in the name, and at the
                          expense, of the Issuer,

                 and, in the case of any Series in respect of the assets
                 securing which a REMIC election or elections have been made,
                 the Issuer has delivered to the Trustee a Non-Disqualification
                 Opinion relevant to the actions specified in clauses (i), (ii)
                 or (iii) above, and has deposited or caused to be deposited
                 with the Trustee, in trust for such purpose, an amount
                 sufficient to pay and discharge the Aggregate Imputed
                 Principal Balance at such time of the Bonds of such Series,
                 together with an amount equal to the aggregate amount of
                 interest that will have accrued on such Series of Bonds (under
                 the Maximum Bond Interest Rate Assumption if such Series of
                 Bonds includes a Class or Classes of Variable Rate Bonds);

                 (2)      the Issuer has paid or caused to be paid all other
         sums payable hereunder by the Issuer with respect to such Series; and





                                      -64-
<PAGE>   70
                 (3)      the Issuer has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel each stating that all conditions
         precedent herein provided for the satisfaction and discharge of this
         Indenture with respect to such Series have been complied with;

then, upon Issuer Request, authorized by a Board Resolution, this Indenture and
the related Series Supplement and the lien, rights and interests created hereby
and thereby shall cease to be of further effect with respect to such Series,
and the Trustee and each co-trustee and separate trustee, if any, then acting
as such hereunder shall, at the expense of the Issuer, execute and deliver all
such instruments as may be necessary to acknowledge the satisfaction and
discharge of this Indenture and the related Series Supplement with respect to
such Series and shall pay, or assign or transfer and deliver, all cash,
securities and other property held by it as part of the Trust Estate or other
assets for such Series remaining after satisfaction of the conditions specified
in clauses (1) and (2) above, (x) with respect to each Series of Bonds for
which an election to treat the Trust Estate and any other assets specified in
such election and securing the Bonds as one or more REMICs has not been made
and will not be made, to the Issuer or upon Issuer Order or (y) with respect to
each Series of Bonds for which such an election has been made or will be made,
and upon receipt by the Trustee of a Non-Disqualification Opinion as required
by Section 4.3, as provided in the related Series Supplement.

         In the absence of an Issuer Request authorized by a Board Resolution,
the payment of all Outstanding Bonds of all Series shall not render this
Indenture inoperative or prevent the Issuer from issuing additional Series of
Bonds from time to time thereafter as herein provided.

         Notwithstanding the satisfaction and discharge of this Indenture with
respect to a Series, the obligations of the Issuer to the Trustee under Section
6.7, the obligations of the Trustee to the Issuer and to the Holders of Bonds
of such Series under Section 3.3, the obligations of the Trustee to the Holders
of Bonds of such Series under Section 4.2, the obligation of the Trustee to
determine and publish notices of the rates to be borne by the Variable Rate
Bonds pursuant to Section 2.3, the provisions of Article II with respect to
lost, stolen, destroyed or mutilated Bonds of such Series, registration of
transfers of Bonds of such Series, and rights to receive payments of principal
of and interest on the Bonds of such Series, and the rights, privileges and
immunities of the Trustee under Article VI  shall survive.

         SECTION 4.2      Application of Trust Money.

         All money deposited with the Trustee pursuant to Sections 3.3 and 4.1
shall be held in trust and applied by it, in accordance with the provisions of
the Bonds and this Indenture, to the payment, either directly or through any
Paying Agent, as the Trustee may determine, to the Persons entitled thereto, of
the principal and interest for whose payment such money has been deposited with
the Trustee.





                                      -65-
<PAGE>   71
         SECTION 4.3      REMIC Matters.

                 (a)      Each Series Supplement shall contain a statement
         specifying whether or not it is intended that one or more REMIC
         elections be made in respect of the Trust Estate and other assets
         specified in such Series Supplement and securing the Bonds issued
         thereby.  If an election or elections are made as aforesaid, it is
         intended that each REMIC specified in the related Series Supplement
         shall constitute, and the affairs thereof shall be conducted so as to
         qualify each such REMIC as, a "real estate mortgage investment
         conduit" as defined in and in accordance with the REMIC Provisions.
         In furtherance of such intention, and with respect to each such REMIC,
         the Issuer covenants and agrees that it shall:

                          (i)     prepare and file, or cause to be prepared and
                 filed, in a timely manner, a U.S. Real Estate Mortgage
                 Investment Conduit Income Tax Return (Form 1066) and prepare
                 and file or cause to be prepared and filed with the Internal
                 Revenue Service and applicable state or local tax authorities
                 income tax or information returns for each taxable year with
                 respect to each calendar year as the taxable year and the
                 accrual method of accounting, containing such information and
                 at the times and in the manner as may be required by the Code
                 or state or local tax laws, regulations, or rules, and shall
                 furnish or cause to be furnished to the related Bondholders
                 the schedules, statements or information at such times and in
                 such manner as may be required thereby;

                          (ii)    within thirty days of the Closing Date of
                 each such Series, shall furnish or cause to be furnished to
                 the Internal Revenue Service, on Form 8811 or as otherwise may
                 be required by the Code, the name, title, address, and
                 telephone number of the person that the holders of the related
                 Bonds may contact for tax information relating thereto (and
                 the Issuer shall act as the representative of each relevant
                 Trust Estate for this purpose), together with such additional
                 information as may be required by such Form, and shall update
                 such information at the time or times in the manner required
                 by the Code;

                          (iii)   make or cause to be made an election on
                 behalf of such REMIC, to be treated as a REMIC on its federal
                 tax return for its first taxable year (and, if necessary,
                 under applicable state law);

                          (iv)    prepare and forward, or cause to be prepared
                 and forwarded, to the related Bondholders and to the Internal
                 Revenue Service and, if necessary, state tax authorities, all
                 information returns or reports, or furnish or cause to be
                 furnished by telephone, mail, publication or other appropriate
                 method such information, as and when required to be provided
                 to them in accordance with the REMIC Provisions, including
                 without limitation, the calculation of any original issue
                 discount using the Prepayment Assumption specified in the
                 related Series Supplement;





                                      -66-
<PAGE>   72
                          (v)     provide information necessary for the
                 computation of tax imposed on the transfer of a Residual
                 Interest of each such REMIC (including the information
                 required by Treasury Regulation 1.860D- 1(b)(5)(ii)) to the
                 Internal Revenue Service and to a Disqualified Organization,
                 or an agent (including a broker, nominee or other middleman)
                 of a Disqualified Organization, or a pass-through entity in
                 which a Disqualified Organization is the record holder of an
                 interest and to any other Person specified in Section
                 860E(e)(3) and (6) of the Code as liable for the tax imposed
                 under Section 860E(e) of the Code (the reasonable cost of
                 computing and furnishing such information may be charged to
                 the Person liable for such tax);

                          (vi)    conduct the affairs of each such REMIC at all
                 time that any Bonds relative thereto are Outstanding so as to
                 maintain the status thereof as a REMIC under the REMIC
                 Provisions;

                          (vii)   not knowingly or intentionally take any
                 action or omit to take any action that would cause the
                 termination of the REMIC status of each such REMIC;

                          (viii)  exercise reasonable care not to allow the
                 creation of any "interests" in each such REMIC within the
                 meaning of Section 860D(d)(2) of the Code other than as
                 provided in the related Series Supplement ;

                          (ix)    exercise reasonable care not to allow the
                 occurrence of any "prohibited transactions" within the meaning
                 of Section 860F of the Code in respect of any such REMIC,
                 unless the Issuer shall have provided a Non-Disqualification
                 Opinion to the Trustee that such occurrence would not result
                 in a REMIC Loss in respect of such REMIC;

                          (x)     exercise reasonable care not to allow such
                 REMIC to receive income from the performance of services or
                 from assets not permitted under the REMIC Provisions to be
                 held by a REMIC;

                          (xi)    pay from amounts in the Trust Estate the
                 amount of any federal or state law, including prohibited
                 transaction taxes, taxes on certain contributions to such
                 REMIC after the Startup Day relative thereto, and taxes on net
                 income from foreclosure property, imposed on such REMIC and as
                 the same shall be due and payable (but such obligation shall
                 not prevent the Issuer or any other appropriate Person from
                 contesting any such tax in appropriate proceedings and shall
                 not prevent the Issuer from withholding payment of such tax,
                 if permitted by law, pending the outcome of such proceedings);

                          (xii)   ensure that all federal, state or local
                 income tax or information returns shall be signed by the
                 Issuer or such other person as may be required to sign such
                 returns by the Code or state or local laws, regulations or
                 rules; and





                                      -67-
<PAGE>   73
                          (xiii)  maintain such records relating to each such
                 REMIC, including but not limited to the income, expenses,
                 individual mortgage loans (including mortgaged property)
                 relative to such REMIC, other assets and liabilities of the
                 Trust Estate relative to such REMIC, and the fair market value
                 and adjusted basis of the property of each determined at such
                 intervals as may be required by the Code, as may be necessary
                 to prepare the foregoing returns, schedules, statement or
                 information.

                 (b)      Reserved

                 (c)      The Issuer shall cause the first federal income tax
         return of each REMIC relative to a Series of Bonds to include the
         information required by Treasury Regulation Section 1.860D-1(d)(2) and
         Treasury Regulation Section 1.860F-4(b)(2).

                 (d)      Except as otherwise provided in the related Series
         Supplement, where an election has been made or will be made to treat
         the Trust Estate or any other assets specified in such election and
         securing the Series as one or more REMICs, the termination of each
         such REMIC shall be effected by the Issuer pursuant to a Qualified
         Liquidation and only after delivery by the Issuer to the Trustee of a
         Non-Disqualification Opinion.

         SECTION 4.4      Reinstatement.

         If the Trustee or any Paying Agent is unable to apply any money in
accordance with Sections 4.1 and 4.2 by reason of any legal proceeding or by
reason of any order or judgment of any court or governmental authority
enjoining, restraining or otherwise prohibiting such application, the Issuer's
obligations under the Indenture and the Bonds shall be revived and reinstated
as though no deposit had occurred pursuant to Section 4.1 until such time as
the Trustee or such Paying Agent is permitted to apply all such money or
obligations in accordance with Sections 4.1 and 4.2; provided, however, that if
the Issuer has made payment of interest on or principal of any of the Bonds
because of the reinstatement of its obligations, the Issuer shall be subrogated
to the Holders of the Bonds to receive such payment from the money or
obligations held by the Trustee or such Paying Agent.





                                      -68-
<PAGE>   74
                                   ARTICLE V

                             DEFAULTS AND REMEDIES

         SECTION 5.1              Event of Default.

         (A)     "Event of Default", wherever used herein, means, with respect
to a Series of Bonds issued hereunder, except to the extent specified otherwise
in the related Series Supplement for such Series of Bonds, any one of the
following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or
pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

                 (1)      if the Issuer shall

                          (A)     subject to clause 5.1(B) hereof, default in
                 the payment when and as due of any installment of principal of
                 or interest on any Bond of such Series, or

                          (B)     default in the payment of the Redemption
                 Price of any Bond of such Series which has been called for
                 redemption pursuant to Article X,

         and, except in the case of any such default in the payment of
         principal, such default or failure shall continue for a period of five
         days;

                 (2)      if the Issuer shall breach or default in the due
         observance of any one or more of the covenants set forth in clauses
         (a), (c)(ii), (f) or (g) of Section 3.8;

                 (3)      Reserved

                 (4)      Reserved

                 (5)      the entry of a decree or order for relief by a court
         having jurisdiction in respect of the Issuer in an involuntary case
         under the federal bankruptcy laws, as now or hereafter in effect, or
         any other present or future federal or state bankruptcy, insolvency or
         similar law, or appointing a receiver, liquidator, assignee, trustee,
         custodian, sequestrator or other similar official of the Issuer or of
         any substantial part of its property, or ordering the winding up or
         liquidation of the affairs of the Issuer and the continuance of any
         such decree or order unstayed and in effect for a period of 60
         consecutive days; or

                 (6)      the commencement by the Issuer of a voluntary case
         under the federal bankruptcy laws, as now or hereafter in effect, or
         any other present or future federal or state bankruptcy, insolvency or
         similar law, or the consent by the Issuer to the appointment of or
         taking possession by a receiver, liquidator, assignee, trustee,
         custodian, sequestrator or other





                                      -69-
<PAGE>   75
         similar official of the Issuer or of any substantial part of its
         property or the making by the Issuer of an assignment for the benefit
         of creditors or the failure by the Issuer generally to pay its debts
         as such debts become due or the taking of corporate action by the
         Issuer in furtherance of any of the foregoing.

         (B)     Neither (a) the allocation of Realized Losses to any Class of
Bonds of a Series, nor (b) the reduction of the Imputed Principal Balance of
any Bond of any Class of a Series by reason of the application of a Junior Bond
Write Down Amount, nor (c) the failure to pay the full amount of any principal
entitlement or any Accrued Bond Interest or any Unpaid Interest on any Class of
Bonds of a Series by reason of the insufficiency of Available Funds on a
Payment Date and the order of allocation of payments from Available Funds
specified in the related Series Supplement, shall constitute an Event of
Default under this Indenture or any Series Supplement, it being expressly
agreed and understood that the Issuer's obligation to make payment on the Bonds
of any Series on any Payment Date constitutes an obligation to pay an aggregate
amount equal to the Available Funds on such Payment Date.

         (C)     Payments on the Bonds of any Series shall be made on each
Payment Date from Available Funds subject to and in accordance with the order
of priority of payments specified in the related Series Supplement.  No
recourse shall be had to the Issuer or any of its assets, other than the Trust
Estate securing the related Series, in the event of (a) a failure by any Holder
of a Bond of any Series to recover by the Stated Maturity thereof or at all the
Current Principal Amount of such Bond by reason of the incurrence of
delinquencies or Realized Losses on the mortgage loans evidenced by the
Conventional Certificates securing such Series or by the application to such
Bond of any portion of a Junior Bond Write Down Amount, or (b) a failure by any
Holder of a Bond of any Series to recover the full amount of any Accrued Bond
Interest or Unpaid Interest thereon by reason of the insufficiency of Available
Funds on any Payment Date and the order of allocation of payments from
Available Funds specified in the related Series Supplement.

         SECTION 5.2      Acceleration of Maturity; Rescission and Annulment.

         (A)     Except to the extent specified otherwise in the Series
Supplement relating to any Series of Bonds, if an Event of Default occurs and
is continuing with respect to a Series, then and in every such case the Holders
of Senior Bonds representing not less than 100% of the Aggregate Current
Principal Amount of the Outstanding Senior Bonds of that Series may declare all
the Bonds of that Series to be immediately due and payable, by a notice in
writing to the Issuer and the Trustee, and upon any such declaration of such
Bonds, an amount equal to (i) the Aggregate Imputed Principal Balance of the
Bonds of such Series at the time of such declaration; (ii) the aggregate of (x)
Accrued Bond Interest on each Class of Bonds of such Series that is due and
unpaid as of the Interest Payment Date most recently preceding  such
declaration, and (y) any Unpaid Interest outstanding as of the date of such
declaration, and (iii) an amount equal to the excess of (x) the Aggregate
Current Principal Amount of such Bonds of such Series over (y) the Aggregate
Imputed Principal Balance of the Bonds of such Series, calculated at the time
of such declaration, shall, subject to Section 5.3 hereof, become immediately
due and payable.





                                      -70-
<PAGE>   76
         (B)     Except to the extent specified otherwise in the Series
Supplement relating to any Series of Bonds, the Holders of Junior Bonds of such
Series shall have no right to exercise the rights referred to in clause (A)
above until the Class Imputed Principal Balance of each Class of the Senior
Bonds of such Series has been reduced to zero.  If any date on or after the
date on which the Class Imputed Principal Balance of each Class of the Senior
Bonds of a Series has been reduced to zero, an Event of Default occurs and is
continuing with respect to such Series, then and in every such case the Holders
of the Highest Priority Junior Class of such Series representing not less than
66 2/3% of the Aggregate Current Principal Amount of such Class may declare all
the Bonds of that Series to be immediately due and payable, by notice in
writing to the Issuer and the Trustee, in which event the outstanding Bonds of
such Series shall be accelerated in the same manner and with the same effect as
provided in clause (A) above.

         (C)     Except to the extent specified otherwise in the Series
Supplement relating to any Series of Bonds, at any time after such a
declaration of acceleration of maturity of the Bonds of a Series has been made
and before a judgment or decree for payment of the money due has been obtained
by the Trustee as hereinafter in this Article provided, the Holders of Bonds
representing 100% of the Aggregate Current Principal Amount of the Outstanding
Senior Bonds of such Series (if such declaration is made pursuant to clause (A)
above), or the Holders of the Highest Priority Junior Class of such Series
representing not less than 66 2/3% of such Class (if such declaration is made
pursuant to clause (B) above), by written notice to the Issuer and the Trustee,
may rescind and annul such declaration and its consequences if

                 (1)      the Issuer delivered or caused to be delivered to the
         Trustee a Non-Disqualification Opinion regarding the actions described
         in this subsection, if one or more REMIC elections has or have been
         made in respect of the assets securing the Series, and the Issuer has
         paid or deposited with the Trustee a sum sufficient to pay

                          (i)     all payments of principal of, and interest
                 on, all Bonds of that Series and all other amounts which would
                 then be due hereunder or upon such Bonds if the Event of
                 Default giving rise to such acceleration had not occurred; and

                          (ii)    all sums paid or advanced by the Trustee
                 hereunder and the reasonable compensation, expenses,
                 disbursements and advances of the Trustee, its agents and
                 counsel; and

                 (2)      all Events of Default in respect to such Series,
         other than the nonpayment of the principal of Bonds of that Series
         which have become due solely by such acceleration, have been cured or
         waived as provided in Section 5.14.

No such rescission shall affect any subsequent Default or impair any right
consequent thereon.





                                      -71-
<PAGE>   77
         SECTION 5.3      Proceedings.

         Subject to the provisions of Section 3.1 and the following sentence,
if an Event of Default occurs and is continuing with respect to a Series, the
Trustee may in its discretion proceed to protect and enforce its rights and the
rights of the Bondholders by such appropriate Proceedings as the Trustee shall
deem most effective to protect and enforce any such rights, whether for the
specific enforcement of any covenant or agreement in this Indenture or in aid
of the exercise of any power granted herein, or enforce any other proper
remedy.  Any proceedings brought by the Trustee on behalf of the Bondholders or
any Bondholder against the Issuer shall be limited to the preservation,
enforcement and foreclosure of the liens, assignments, rights and security
interests under the Indenture and no attachment, execution or other unit or
process shall be sought, issued or levied upon any assets, properties or funds
of the Issuer, other than the Trust Estate relative to the Series of Bonds in
respect of which such Event of Default has occurred.  If there is a foreclosure
of any such liens, assignments, rights and security interests under this
Indenture, by private power of sale or otherwise, no judgment for any
deficiency upon the indebtedness represented by the Bonds may be sought or
obtained by the Trustee or any Bondholder against the Issuer.

         SECTION 5.4      Remedies.

         If an Event of Default shall have occurred and be continuing in
respect to a Series of Bonds and the Bonds of such Series have been declared
due and payable and such declaration and its consequences have not been
rescinded and annulled, the Trustee may do one or more of the following:

                 (a)      institute Proceedings for the collection of all
         amounts then payable on the Bonds of that Series, or under this
         Indenture in respect to that Series of Bonds, whether by declaration
         or otherwise, enforce any judgment obtained and collect from the
         Issuer (other than from the Trust Estate or other assets securing any
         other Series of Bonds) moneys adjudged due;

                 (b)      in accordance with Section 5.17, sell the Trust
         Estate and other assets, if any, securing the Bonds of that Series or
         any portion thereof or rights or interest therein, at one or more
         public or private Sales called and conducted in any manner permitted
         by law;

                 (c)      institute Proceedings from time to time for the
         complete or partial foreclosure of this Indenture with respect to the
         Trust Estate securing the Bonds of that Series; and

                 (d)      exercise any remedies of a secured party under the
         Uniform Commercial Code and take any other appropriate action to
         protect and enforce the rights and remedies of the Trustee or the
         Holders of the Bonds hereunder, including, without limitation, any
         action specified in the Series Supplement for any Series of Bonds.





                                      -72-
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         SECTION 5.5      [Reserved].

         SECTION 5.6      Trustee May File Proofs of Claim.

         In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, composition or other judicial
Proceeding relative to the Issuer or any other obligor upon any of the Bonds or
the property of the Issuer or of such other obligor or their creditors, the
Trustee (irrespective of whether the Bonds of any Series shall then be due and
payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand on the Issuer for the payment of
any overdue principal or interest) shall be entitled and empowered, by
intervention in such Proceeding or otherwise, to

                 (i)      file and prove a claim for the whole amount of
         principal and interest owing and unpaid in respect of the Bonds of
         each Series issued hereunder and to file such other papers or
         documents as may be necessary or advisable in order to have the claims
         of the Trustee (including any claim for the reasonable compensation,
         expenses, disbursements and advances of the Trustee, its agents and
         counsel) and of the Bondholders allowed in such Proceeding, and

                 (ii)     collect and receive any moneys or other property
         payable or deliverable on any such claims and to distribute the same,

and any receiver, assignee, trustee, liquidator, or sequestrator (or other
similar official) in any such Proceeding is hereby authorized by each
Bondholder to make such payments to the Trustee and, in the event that the
Trustee shall consent to the making of such payments directly to the
Bondholders, to pay to the Trustee any amount due to it for the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel, and any other amounts due the Trustee under Section 6.7.

         Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Bondholder any plan
of reorganization, arrangement, adjustment, or composition affecting any of the
Bonds or the rights of any Holder thereof, or to authorize the Trustee to vote
in respect of the claim of any Bondholder in any such Proceeding.

         SECTION 5.7      Trustee May Enforce Claims without Possession of
                          Bonds.

         All rights of action and claims under this Indenture or any of the
Bonds may be prosecuted and enforced by the Trustee without the possession of
any of the Bonds or the production thereof in any Proceeding relating thereto,
and any such Proceeding instituted by the Trustee shall be brought in its own
name as trustee of an express trust, and any recovery of judgment shall be, in
accordance with Section 5.8, for the payment of the reasonable compensation,
expenses, disbursements and advances of  the Trustee, its agents and counsel
and, except to the extent specified otherwise in the Series Supplement for any
Series of Bonds, for the ratable benefit of the Holders of the Bonds of the
Series in respect of which such judgment has been recovered.





                                      -73-
<PAGE>   79
         SECTION 5.8      Application of Money Collected.

         If the Bonds of a Series have been declared due and payable following
an Event of Default and such declaration and its consequences have not been
rescinded and annulled, any money collected by the Trustee with respect to such
Series of Bonds pursuant to this Article or otherwise and any monies that may
then be held or thereafter received by the Trustee with respect to such Series
of Bonds shall be applied in the following order, at the date or dates fixed by
the Trustee and, in case of the distribution of the entire amount due on
account of principal of, and interest on, such Bonds, upon presentation and
surrender thereof:

                 First:  To the payment of all amounts due the Trustee under
         Section 6.7;

                 Second: Except to the extent specified otherwise in the Series
         Supplement for any Series of Bonds, to the payment of amounts then due
         and unpaid upon the Outstanding Bonds of such Series for:

                          (a)     the aggregate of the Accrued Bond Interest on
                 each Class of Bonds Outstanding that is due and unpaid as of
                 the Interest Payment Date most recently preceding date of any
                 declaration made pursuant to Section 5.2(A), together with any
                 Unpaid Interest outstanding as of such date of declaration,
                 such amount to be paid ratably among the Bonds of such Series
                 without preference or priority of any kind

                          (b)     interest on the Class Imputed Principal
                 Balance of each Class of Bonds (including interest on any
                 Class of Compound Interest Bonds) of such Series then
                 Outstanding at the Bond Interest Rate applicable thereto, for
                 the period from the end of the Interest Accrual Period with
                 respect to the Interest Payment Date most recently preceding
                 the date of any declaration made pursuant to Section 5.2(A),
                 to the date specified for such Class in the related Series
                 Supplement, (less such Class' share of the Net Interest
                 Shortfalls and the interest portion of any Realized Losses
                 incurred during the aforesaid accrual period on the mortgage
                 loans underlying the Conventional Certificates securing such
                 Series), such amount to be paid ratably among the Bonds of
                 such Series, without preference or priority of any kind;

                 Third:  Except to the extent specified otherwise in the Series
         Supplement for any Series of Bonds, to the payment of the Aggregate
         Imputed Principal Balance of the Bonds of such Series, the Imputed
         Principal Balance of each Bond of such Series ratably, without
         preference or priority of any kind;

                 Fourth:  Except to the extent specified in the Series
         Supplement for any Series of Bonds, to the payment of the excess of
         (a) the Aggregate Current Principal Amount of the Bonds of such Series
         over (b) the Aggregate Imputed Principal Balance of such Bonds,  each
         such Bond's respective share of such excess amount, ratably, without
         preference or priority of any kind; and





                                      -74-
<PAGE>   80
                 Fifth:  Except as otherwise provided in the related Series
         Supplement, to the payment of the remainder, if any, (i) to the Issuer
         or any other Person legally entitled thereto if one or more REMIC
         elections has or have not been made in respect of the assets securing
         the Bonds of such Series or (ii) if such an election or elections has
         or have been or will be made, to the  Residual Interest in the REMIC
         that  includes such assets, as stipulated in the related Series
         Supplement.

         SECTION 5.9      Limitation on Suits.

         No Holder of a Bond of any Series shall have any right to institute
any Proceedings, judicial or otherwise, with respect to this Indenture, or for
the appointment of a receiver or trustee, or for any other remedy hereunder,
unless

                 (1)      such Holder has previously given written notice to
         the Trustee of a continuing Event of Default with respect to such
         Series;

                 (2)      (a) all of the Holders of the Classes of Senior Bonds
         of such Series having Class Imputed Principal Balances greater than
         zero or (b) in the event that no Class of Senior Bonds of such Series
         has a Class Imputed Principal Balance greater than zero, the Holders
         of the Highest Priority Junior Class of such Series representing not
         less than 66 2/3% of the Aggregate Current Principal Amount of such
         Class shall have made written request to the Trustee to institute
         Proceedings in respect of such Event of Default in its own name as
         Trustee hereunder;

                 (3)      such Holder or Holders have offered to the Trustee
         reasonable indemnity against the costs, expenses and liabilities to be
         incurred in compliance with such request;

                 (4)      the Trustee for 60 days after its receipt of such
         notice, request and offer of indemnity has failed to institute any
         such Proceeding; and

                 (5)      no direction inconsistent with such written requests
         has been given to the Trustee during such 60-day period by (a) any
         Holder of a Class of Senior Bonds of such Series having Class Imputed
         Principal Balances greater than zero or (b) in the event that no Class
         of Senior Bonds of such Series has a Class Imputed Principal Balance
         greater than zero, any Holder of the Highest Priority Junior Class of
         such Series;

it being understood and intended that no one or more Holders of Bonds shall
have any right in any manner whatever by virtue of, or by availing of, any
provision of this Indenture to affect, disturb or prejudice the rights of any
other Holders of Bonds or to obtain or to seek to obtain priority or preference
over any other Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all the
Holders of Bonds of the same Series, except to the extent specified otherwise
in the Series Supplement for any Series.





                                      -75-
<PAGE>   81
         SECTION 5.10     Restoration of Rights and Remedies.

         If the Trustee or any Bondholder has instituted any Proceeding to
enforce any right or remedy under this Indenture and such Proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Bondholder, then and in every such case the Issuer, the
Trustee and the Bondholders shall, subject to any determination in such
Proceeding, be restored severally and respectively to their former positions
hereunder, and thereafter all rights and remedies of the Trustee and the
Bondholders shall continue as though no such Proceeding had been instituted.

         SECTION 5.11     Rights and Remedies Cumulative.

         No right or remedy herein conferred upon or reserved to the Trustee or
to the Bondholders is intended to be exclusive of any other right or remedy,
and every right and remedy shall, to the extent permitted by law, be cumulative
and in addition to every other right and remedy given hereunder or now or
hereafter existing at law or in equity or otherwise.  The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent
the concurrent assertion or employment of any other appropriate right or
remedy.

         SECTION 5.12     Delay or Omission Not Waiver.

         No delay or omission of the Trustee or of any Holder of any Bond to
exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default or
an acquiescence therein. Every right and remedy given by this Article or by law
to the Trustee or to the Bondholders may be exercised from time to time, and as
often as may be deemed expedient, by the Trustee or by the Bondholders, as the
case may be.

         SECTION 5.13     Control by Bondholders.

         If an Event of Default is declared by or at the direction of the
Holders of Senior Bonds of a Series pursuant to Section 5.2(A) above, the
Holders of Bonds representing more than 50% of the Aggregate Current Principal
Amount of the Outstanding Senior Bonds of such  Series shall have the right to
direct the time, method and place of conducting any Proceeding for any remedy
available to the Trustee with respect to such Series or exercising any trust or
power conferred on the Trustee with respect to such Series.  If an Event of
Default is declared by or at the direction of the Holders of the Highest
Priority Junior Class of a Series pursuant to Section 5.2(B) above (and subject
to the conditions therein contained), the Holders of the Highest Priority
Junior Class of such Series representing more than 50% of the Aggregate Current
Principal Amount of such Class shall have the right to direct the time, method
and place of conducting any Proceeding for any remedy available to the Trustee
with respect to such Series or exercising any trust or power conferred on the
Trustee.  Any direction given by the Holders of Senior Bonds or Junior Bonds
pursuant to this Section 5.13 shall be subject to the following conditions:





                                      -76-
<PAGE>   82
                 (1)      such direction shall not be in conflict with any rule
         of law or with this Indenture,

                 (2)      any direction to the Trustee to undertake a Sale of a
         Trust Estate shall be by the Holders of Bonds secured thereby
         representing the percentage of the Aggregate Current Principal Amount
         of the Outstanding Bonds specified in Section 5.17(b)(1), unless
         Section 5.17(b)(2) is applicable, or except to the extent specified
         otherwise in the Series Supplement for any Series of Bonds,

                 (3)      the Trustee may take any other action deemed proper
         by the Trustee which is not inconsistent with such direction;
         provided, however, that, subject to Section 6.1, the Trustee need not
         take any action which it determines might involve it in liability or
         be unjustly prejudicial to the Bondholders not consenting.

         SECTION 5.14     Waiver of Past Defaults.

                 (a)      Except to the extent specified otherwise in the
         Series Supplement for any Series of Bonds, the Holders of Bonds
         representing 100% of the Aggregate Current Principal Amount of the
         Outstanding Senior Bonds of a Series may on behalf of the Holders of
         all the Bonds of such Series waive any past Default hereunder with
         respect to such Series and its consequences, except a Default in the
         payment of any installment of principal of, or interest on, any Bond
         of that Series.

                 Upon any such waiver, such Default shall cease to exist, and
         any Event of Default arising therefrom shall be deemed to have been
         cured for every purpose of this Indenture; but no such waiver shall
         extend to any subsequent or other Default or impair any right
         consequent thereon.

                 (b)      Except to the extent specified otherwise in the
         Series Supplement for any Series of Bonds, the Holders of the Highest
         Priority Junior Class of such  Series representing not less than 66
         2/3% of the Aggregate Current Principal Amount of such Class may on
         behalf of all the Junior Bonds of such Series waive any past Default
         hereunder in respect of which such Holders would have been entitled to
         exercise their rights pursuant to Section 5.2(B), and may waive the
         consequences of such Default, except, in either case, a Default

                          (1)     in the payment of any installment of
                 principal of, or interest on, any Bond of that Series, or

                          (2)     in respect of a covenant or provision hereof
                 which under Section 9.2 cannot be modified or amended without
                 the consent of each Outstanding Junior Bond affected.

         Upon any such waiver, such Default shall cease to exist, and any Event
         of Default arising therefrom shall be deemed to have been cured for
         every purpose of this Indenture; but no





                                      -77-
<PAGE>   83
         such waiver shall extend to any subsequent or other Default or impair
         any right consequent thereon.

         SECTION 5.15     Undertaking for Costs.

         All parties to this Indenture agree, and each Holder of any Bond by
his acceptance thereof shall be deemed to have agreed, that any court may in
its discretion require, in any suit for the enforcement of any right or remedy
under this Indenture, or in any suit against the Trustee for any action taken,
suffered or omitted by it as Trustee, the filing by any party litigant in such
suit of an undertaking to pay the costs of such suit, and that such court may
in its discretion assess reasonable costs, including reasonable attorneys'
fees, against any party litigant in such suit, having due regard to the merits
and good faith of the claims or defenses made by such party litigant; but the
provisions of this Section shall not apply to any suit instituted by the
Trustee, except to the extent specified otherwise in the Series Supplement
relating to any Series of Bonds, to any suit instituted by any Bondholder, or
group of Bondholders, holding in the aggregate Bonds representing more than 10%
of the Aggregate Current Principal Amount of the Outstanding Bonds of a Series,
or to any suit instituted by any Bondholder for the enforcement of the payment
of any installment of interest on any Bond on or after the Stated Maturity
thereof expressed in such Bond or for the enforcement of the payment of the
entire remaining unpaid principal amount of any Bond on or after the Stated
Maturity of the final installment of the principal thereof (or, in the case of
any Bond called for redemption, on or after the applicable Redemption Date).

         SECTION 5.16     Waiver of Stay or Extension Laws.

         The Issuer covenants (to the extent that it may lawfully do so) that
it will not at any time insist upon, or plead, or in any manner whatsoever
claim or take the benefit or advantage of, any stay or extension law wherever
enacted, now or at any time hereafter in force, which may affect the covenants
in, or the performance of, this Indenture; and the Issuer (to the extent that
it may lawfully do so) hereby expressly waives all benefit or advantage of any
such law, and covenants that it will not hinder, delay or impede the execution
of any power herein granted to the Trustee, but will suffer and permit the
execution of every such power as though no such law had been enacted.

         SECTION 5.17     Sale of Trust Estate.

                 (a)      The power to effect any sale (a "Sale") of any
         portion of a Trust Estate pursuant to Section 5.4 shall not be
         exhausted by any one or more Sales as to any portion of such Trust
         Estate remaining unsold, but shall continue unimpaired until the
         entire such Trust Estate shall have been sold or all amounts payable
         on the Bonds of the Series secured thereby and under this Indenture
         with respect thereto shall have been paid.  The Trustee may from time
         to time postpone any public Sale by public announcement made at the
         time and place of such Sale.  The Trustee hereby expressly waives its
         right to any amount fixed by law as compensation for any Sale.





                                      -78-
<PAGE>   84
                 (b)      To the extent permitted by law, and except as
         specified otherwise in the Series Supplement for any Series of Bonds,
         the Trustee shall not in any private Sale sell or otherwise dispose of
         the Trust Estate, or any portion thereof, securing a Series of Bonds
         which has been declared due and payable unless

                          (1)     if such Sale is effected consequent on a
                 declaration made by the Holders of Senior Bonds of a Series
                 pursuant to Section 5.2(A), the Holders of all Outstanding
                 Senior Bonds of such Series consent to, or direct the Trustee
                 to make, such Sale, or, if such Sale is effected consequent on
                 a declaration made by the Holders of the Highest Priority
                 Junior Class of such Series representing not less than 66 2/3%
                 of the Aggregate Current Principal of such Class pursuant to
                 Section 5.2(B), the Holders of the Highest Priority Junior
                 Class of such Series representing not less than 66 2/3% of the
                 Aggregate Current Principal of such Class consent to, or
                 direct the Trustee to make, such a Sale, or

                          (2)     the proceeds of such Sale would be not less
                 than the entire amount which would be distributable to the
                 Holders of the Senior Bonds or the Junior Bonds, as the case
                 may be, of such Series, in full payment thereof in accordance
                 with Section 5.8.

         The foregoing provisions shall not preclude or limit the ability of
         the Trustee to purchase all or any portion of the Trust Estate at a
         private Sale, provided that, unless otherwise specified in the related
         Series Supplement, in no event (except as may be compelled or required
         by applicable law or court order in which case the provisions of
         Section 4.3 shall apply if appropriate) shall the Trustee purchase or
         sell the Trust Estate or any portion thereof (if an election or
         elections has or have been made or will be made to treat the Trust
         Estate or such other assets specified in such election securing the
         Series as a REMIC) unless it either (i) has received a
         Non-Disqualification Opinion, or (ii) the proceeds of such Sale net of
         any tax on "prohibited transactions" as defined in Section 860F of the
         Code that is payable from the Trust Estate would be not less than the
         entire amount that would be distributable to the Holders of the Bonds,
         in full payment thereof in accordance with Section 5.8, and such sale
         meets the requirements of Section 4.3.

                 (c)      Except as otherwise provided in the related Series
         Supplement, unless the Holders of all Outstanding Bonds have otherwise
         consented or directed the Trustee, at any public Sale of all or any
         portion of a Trust Estate at which a minimum bid equal to or greater
         than the amount described in paragraph (2) of subsection (b) of this
         Section 5.17 and the amount of any tax on "prohibited transactions" as
         defined in Section 860F of the Code that would be payable from the
         Trust Estate if an election or elections has or have been  made or
         will be made to treat the Trust Estate or such other assets specified
         in such election securing the Series as a REMIC, has not been
         established by the Trustee and no Person bids an amount equal to or
         greater than such amount, the Trustee shall bid an amount at least
         $1.00 more than the highest other bid.





                                      -79-
<PAGE>   85
                 (d)      In connection with a Sale of all or any portion of a
         Trust Estate

                          (1)     any Holder or Holders of Bonds of the Series
                 secured thereby may bid for and purchase the property offered
                 for Sale, and upon compliance with the terms of such Sale may
                 hold, retain and possess and dispose of such property, without
                 further accountability, and may, in paying the purchase money
                 therefor, deliver any Outstanding Bonds of such Series or
                 claims for interest thereon in lieu of cash up to the amount
                 which shall, upon distribution of the net proceeds of such
                 Sale, be payable thereon, and such Bonds, in case the amounts
                 so payable thereon shall be less than the amount due thereon,
                 shall be returned to the Holders thereof after being
                 appropriately stamped to show such partial payment; for the
                 purposes of this clause (1), the principal amount of
                 indebtedness of the Issuer evidenced by any Outstanding Bond
                 delivered in lieu of cash shall be the Imputed Principal
                 Balance of such Bond.

                          (2)     the Trustee may bid for and acquire the
                 property offered for Sale in connection with any public Sale
                 thereof, and, in lieu of paying cash therefor, may make
                 settlement for the purchase price by crediting the gross Sale
                 price against the sum of (A) the amount which would be
                 distributable to the Holders of the Bonds of the Series
                 secured thereby as a result of such Sale in accordance with
                 Section 5.8 and (B) the expenses of the Sale and of any
                 Proceedings in connection therewith which are reimbursable to
                 it, without being required to produce the Bonds of such Series
                 in order to complete any such Sale or in order for the net
                 Sale price to be credited against such Bonds, and any property
                 so acquired by the Trustee shall be held and dealt with by it
                 in accordance with the provisions of this Indenture;

                          (3)     the Trustee shall execute and deliver an
                 appropriate instrument of conveyance transferring its interest
                 in any portion of such Trust Estate in connection with a Sale
                 thereof;

                          (4)     the Trustee is hereby irrevocably appointed
                 the agent and attorney-in-fact of the Issuer to transfer and
                 convey its interest in any portion of such Trust Estate in
                 connection with a Sale thereof, and to take all action
                 necessary to effect such Sale; and

                          (5)     no purchaser or transferee at such a Sale
                 shall be bound to ascertain the Trustee's authority, inquire
                 into the satisfaction of any conditions precedent or see to
                 the application of any moneys.

                 (e)      Notwithstanding anything in this Indenture to the
         contrary, if an Event of Default specified in Section 5.1(A)(1) is the
         Event of Default, or one of the Events of Default, on the basis of
         which the Bonds of a Series have been declared due and payable, then
         the Trustee may, in its sole discretion, sell the Trust Estate
         securing such Series without





                                      -80-
<PAGE>   86
         compliance with this Section 5.17, but except as otherwise provided in
         the related Series Supplement, subject to and in compliance with
         Section 4.3.

         SECTION 5.18     Action on Bonds.

         The Trustee's right to seek and recover judgment on a Series of Bonds
or under this Indenture shall not be affected by the seeking, obtaining or
application of any other relief under or with respect to this Indenture.
Neither the lien of this Indenture nor any rights or remedies of the Trustee or
the Holders of Bonds of any Series shall be impaired by the recovery of any
judgment by the Trustee against the Issuer or by the levy of any execution
under such judgment upon any portion of the Trust Estate securing such Series.

         SECTION 5.19     No Recourse to Other Trust Estates or Other Assets of
                          the Issuer.

         Except to the extent provided otherwise in the related Series
Supplement, the Trust Estate Granted to the Trustee as security for a
particular Series will serve as security only for that Series.  Except to the
extent provided otherwise in the related Series Supplement, Holders of Bonds of
one Series shall have no recourse against the Trust Estate Granted to the
Trustee as security for any other Series, and no judgment against the Issuer
for any amount due with respect to one Series of Bonds may be enforced against
either the Trust Estate securing any other Series or any other assets of the
Issuer, nor may any prejudgment lien or other attachment be sought against any
such other Trust Estate or any other assets of the Issuer.

         SECTION 5.20     Application of the TIA.

                 (a)      Pursuant to Section 3.16(a) of the TIA, all
         provisions automatically provided for in Section 3.16(a) are hereby
         expressly excluded.

                 (b)      Section 3.16(b) of the TIA requires the following
         provision to be included herein:

                          Notwithstanding any other provision of the indenture
                 to be qualified, the right of any holder of any indenture
                 security to receive payment of the principal of and interest
                 on such indenture security, on or after the respective due
                 dates expressed in such indenture security, or to institute
                 suit for the enforcement of any such payment on or after such
                 respective dates, shall not be impaired or affected without
                 the consent of such holder, except as to a postponement of an
                 interest payment consented to as provided in paragraph (2) of
                 subsection (a), and except that such indenture may contain
                 provisions limiting or denying the right of any such holder to
                 institute any such suit, if and to the extent that the
                 institution or prosecution thereof or the entry of judgment
                 therein would, under applicable law, result in the surrender,
                 impairment, waiver, or loss of the lien of such indenture upon
                 any property subject to such lien.





                                      -81-
<PAGE>   87
                                   ARTICLE VI

                                  THE TRUSTEE

         SECTION 6.1      Duties of Trustee.

                 (a)      The Trustee shall be subject to TIA Section  315(c).

                 (b)      Except during the continuance of an Event of Default:

                          (1)     The Trustee need perform only those duties
                 that are specifically set forth in this Indenture and no
                 others and no implied covenants or obligations of the Trustee
                 shall be read into this Indenture.

                          (2)     In the absence of bad faith on its part, the
                 Trustee may conclusively rely, as to the truth of the
                 statements and the correctness of the opinions expressed
                 therein, upon certificates or opinions furnished to the
                 Trustee and conforming to the requirements of this Indenture.
                 The Trustee shall, however, examine such certificates and
                 opinions to determine whether they conform to the requirements
                 of this Indenture.

                 (c)      The Trustee may not be relieved from liability for
         its own negligent action, its own negligent failure to act, or its own
         wilful misconduct, except that:

                          (1)     This paragraph does not limit the effect of
                                  subsection (b) of this Section.

                          (2)     The Trustee shall not be liable for any error
                 of judgment made in good faith by a Responsible Officer,
                 unless it is proved that the Trustee was negligent in
                 ascertaining the pertinent facts.

                          (3)     The Trustee shall not be liable with respect
                 to any action it takes or omits to take in good faith in
                 accordance with a direction received by it pursuant to Section
                 5.4 or Section 5.17.

                 (d)      For all other purposes under this Indenture, the
         Trustee shall not be deemed to have notice of any Event of Default
         described in Section 5.1(A)(2), 5.1(A)(5) or 5.1(A)(6) or any default
         (other than a default in payment to the Trustee) under any Pooling and
         Administration Agreement or any Guaranty Agreement unless a
         Responsible Officer assigned to and working in the Trustee's corporate
         trust department has actual knowledge thereof or unless written notice
         of any event which is in fact such an Event of Default or Default is
         received by the Trustee at the Corporate Trust Office, and such notice
         references the Bonds generally, the Bonds of any Series, the Issuer,
         any Trust Estate or this Indenture.





                                      -82-
<PAGE>   88
                 (e)      No provision of this Indenture shall require the
         Trustee to expend or risk its own funds or otherwise incur any
         financial liability in the performance of any of its duties hereunder,
         or in the exercise of any of its rights or powers, if it shall have
         reasonable grounds for believing that repayment of such funds or
         adequate indemnity against such risk or liability is not reasonably
         assured to it; provided, however, that the Trustee shall not refuse or
         fail to perform any of its duties hereunder solely as a result of
         nonpayment of its normal fees and expenses and further provided that
         nothing in this Section 6.1(e) shall be construed to limit the
         exercise by the Trustee of any right or remedy permitted under this
         Indenture or otherwise in the event of the Issuer's failure to pay the
         Trustee's fees and expenses pursuant to Section 6.7.  In determining
         that such repayment or indemnity is not reasonably assured to it, the
         Trustee must consider not only the likelihood of repayment or
         indemnity by or on behalf of the Issuer but also the likelihood of
         repayment or indemnity from amounts payable to it from the applicable
         Trust Estate pursuant to Sections 6.7 and 8.2(d).

                 (f)      Every provision of this Indenture that in any way
         relates to the Trustee is subject to the provisions of this Section.

                 (g)      Notwithstanding any extinguishment of all right,
         title and interest of the Issuer in and to the Trust Estate following
         an Event of Default and a consequent declaration of acceleration of
         the Maturity of the Bonds, whether such extinguishment occurs through
         a Sale of the Trust Estate to another Person, the acquisition of the
         Trust Estate by the Trustee or otherwise, the rights, powers and
         duties of the Trustee with respect to the Trust Estate (or the
         proceeds thereof) and the Holders of the Bonds and the rights of the
         Bondholders shall, to the extent permitted by law, continue to be
         governed by the terms of this Indenture.

         SECTION 6.2      Notice of Default.

         Within 90 days after the occurrence of any Default known to the
Trustee, the Trustee shall transmit by mail to all Holders of Bonds of each
Series as to which such Default has occurred notice of each such Default,
unless such Default shall have been cured or waived, provided, however, that
except in the case of a Default of the type described in Section 5.1(A)(1), the
Trustee shall be protected in withholding such notice if and so long as the
board of directors, the executive committee or a trust committee of directors
and/or Responsible Officers of the Trustee in good faith determine that the
withholding of such notice is in the interests of the Holders of the Bonds of
the Series affected by such Default.

         SECTION 6.3      Rights of Trustee.

                 (a)      The Trustee may rely on any document believed by it
         to be genuine and to have been signed or presented by the proper
         Person.  The Trustee need not investigate any fact or matter stated in
         the document.





                                      -83-
<PAGE>   89
                 (b)      Before the Trustee acts or refrains from acting, it
         may require an Officers' Certificate or an Opinion of Counsel.  The
         Trustee shall not be liable for any action it takes or omits to take
         in good faith in reliance on the Officers' Certificate or Opinion of
         Counsel.

                 (c)      The Trustee may act through agents and shall not be
         responsible for the misconduct or negligence of any agent appointed
         with due care.

                 (d)      The Trustee shall not be liable for any action it
         takes or omits to take in good faith which it believes to be
         authorized or within its rights or powers.

         SECTION 6.4      Not Responsible for Recitals or Issuance of Bonds.

         The recitals contained herein and in the Bonds, except the
certificates of authentication on the Bonds, shall be taken as the statements
of the Issuer, and the Trustee assumes no responsibility for their correctness.
The Trustee makes no representations with respect to any Trust Estate or as to
the validity or sufficiency of this Indenture or of the Bonds.  The Trustee
shall not be accountable for the use or application by the Issuer of Bonds or
the proceeds thereof or any money paid to the Issuer or upon Issuer Order
pursuant to the provisions hereof.

         SECTION 6.5      May Hold Bonds.

         The Trustee, any Agent, or any other agent of the Issuer, in its
individual or any other capacity, may become the owner or pledgee of Bonds and,
subject to Sections 6.8 and 6.13, may otherwise deal with the Issuer or any
Affiliate of the Issuer with the same rights it would have if it were not
Trustee, Agent, or such other agent.

         SECTION 6.6      Money Held in Trust.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by this Indenture or by law, but
shall be accounted for separately for each Series.  The Trustee shall be under
no liability for interest on any money received by it hereunder except as
otherwise agreed with the Issuer and except to the extent of income or other
gain on investments which are obligations of the Trustee, in its commercial
capacity, and income or other gain actually received by the Trustee on
investments, which are obligations of others.

         SECTION 6.7      Compensation and Reimbursement.

                 (a)      The Issuer agrees

                          (1)     subject to any separate written agreement
                 with the Trustee, to pay the Trustee from time to time
                 reasonable compensation for all services rendered by it
                 hereunder (which compensation shall not be limited by any
                 provision of law in regard to the compensation of a trustee of
                 an express trust);





                                      -84-
<PAGE>   90
                          (2)     except as otherwise expressly provided
                 herein, to reimburse the Trustee upon its request for all 
                 reasonable expenses, disbursements and advances incurred or 
                 made by the Trustee in accordance with any provision of this
                 Indenture (including the reasonable compensation and the
                 expenses and disbursements of its agents and counsel), except
                 any such expense, disbursement or advance as may be
                 attributable to its negligence or bad faith; and

                          (3)     to indemnify the Trustee and its agents for,
                 and to hold them harmless against, any loss, liability or
                 expense incurred without negligence or bad faith on their
                 part, arising out of, or in connection with, the acceptance or
                 administration of this trust, including the costs and expenses
                 of defending themselves against any claim in connection with
                 the exercise or performance of any of their powers or duties
                 hereunder, provided that:

                                  (i)      with respect to any such claim, the
                          Trustee shall have given the Issuer written notice
                          thereof promptly after the Trustee shall have
                          knowledge thereof;

                                  (ii)     while maintaining absolute control
                          over its own defense, the Trustee shall cooperate and
                          consult fully with the Issuer in preparing such
                          defense; and

                                  (iii)    notwithstanding anything to the
                          contrary in this Section 6.7(a)(3), the Issuer shall
                          not be liable for settlement of any such claim by the
                          Trustee entered into without the prior consent of the
                          Issuer.

                 Subject to Section 6.10, the Trustee agrees to fully perform
         its duties under this Indenture notwithstanding any failure on the
         part of the Issuer to make any payments, reimbursements or
         indemnifications to the Trustee pursuant to this Section 6.7.

                 (b)      The Issuer may remit payment for such fees and
         expenses to the Trustee or, in the absence thereof, the Trustee may
         reimburse itself from time to time pursuant to Section 8.2(d) hereof
         for payments of its fees and expenses hereunder from moneys on deposit
         in the Collection Account.

                 (c)      Notwithstanding the provisions of Section 6.1(e) and
         6.7(a)(1), (2) and (3) hereof, the fees, expenses, disbursements and
         advances payable to the Trustee pursuant to Section 6.7(a)(1) and (2)
         and any indemnity payments due to the Trustee pursuant to Section
         6.7(a)(3) shall not in the aggregate on any Payment Date exceed the
         Expense Reserve Amount, if any; provided, however, that the Trustee
         shall advance any amounts in excess thereof due under this Section
         6.7.

                 (d)      If the Bonds have been declared due and payable
         following an Event of Default pursuant to Section 5.2, which
         acceleration of Maturity and its consequences have





                                      -85-
<PAGE>   91
         not been rescinded and annulled and moneys collected by the Trustee
         are being applied in accordance with Section 5.8 as may be amended by
         any Series Supplement, expenses, disbursements and advances due the
         Trustee under 6.7(a)(2) and indemnity payments due to the Trustee
         under Section 6.7(a)(3) hereof shall no longer be subject to the
         provisions of Section 6.7(c).

                 (e)      As security for the payment obligations of the Issuer
         pursuant to the foregoing provisions of this Section 6.7, the Issuer
         hereby Grants to the Trustee a lien ranking at all times senior to the
         lien of the Bonds with respect to which any claim of the Trustee under
         this Section arose and senior to all other liens, if any, upon all
         property and funds held or collected as part of the Trust Estate for
         such Bonds by the Trustee in its capacity as such.  The Trustee shall
         not (i) exercise or enforce such senior lien in any manner, or (ii)
         institute any Proceeding against the Issuer for any payments,
         reimbursements, or indemnifications to the Trustee or to enforce such
         lien, in either case unless (i) the Bonds have been declared due and
         payable following an Event of Default pursuant to Section 5.2, (ii)
         such acceleration of Maturity and its consequences have not been
         rescinded and annulled, and (iii) moneys collected by the Trustee are
         being applied in accordance with Section 5.8, as may be amended by any
         Series Supplement.

                 (f)      Subject to the last sentence of Section 6.7(e),
         nothing in this Section 6.7 shall be construed to limit (except as
         otherwise expressly provided in subsection (e) of this Section 6.7)
         the exercise by the Trustee of any right or remedy permitted under the
         Indenture or otherwise in the event of the Issuer's failure to pay the
         amounts due the Trustee pursuant to this Section 6.7.

         SECTION 6.8      Disqualification; Conflicting Interests.

         In addition to the conflicting interests specified in TIA Section
310(b), the Trustee shall be deemed to have a conflicting interest under said
Section  310(b) upon the occurrence of a default, if by reason of supplements
or amendments to this Indenture as originally executed there shall be created
covenants, restrictions, conditions or additional events of default which

                 (1)      unless otherwise provided in the related Series
         Supplement, would give the Holders of Bonds of any Series any rights
         with respect to the Trust Estate or any other property held by the
         Trustee for the benefit of Holders of Bonds of any other Series with
         respect to which it is also serving as Trustee, or

                 (2)      is sufficiently likely to involve a material conflict
         of interest between Series of Bonds that it is advisable in the public
         interest or for the protection of Holders of Bonds of any Series that
         the Trustee disqualify itself from acting as such with respect to one
         or more applicable Series of Bonds.





                                      -86-
<PAGE>   92
         SECTION 6.9      Eligibility; Trustee's Capital and Surplus.

         The Trustee shall at all times meet the then current capital and
surplus requirements of the TIA and shall have a combined capital and surplus
of at least $50,000,000 or be a member or subsidiary of a bank holding system,
the aggregate combined capital and surplus of which is at least $50,000,000.
If the Trustee or the members of the bank holding company system of which it is
a part publish annual reports of condition of the type described in TIA Section
310(a)(2), its (or such bank holding company system's) combined capital and
surplus for purposes of TIA Section
 310(a)(2) shall be as set forth in the latest such report or reports.  If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of TIA Section  310(a)(2), it shall resign immediately in the manner
and with the effect hereinafter specified in this Article.

         SECTION 6.10     Resignation and Removal; Appointment of Successor.

                 (a)      Subject to the provisions of the Series Supplement
         with respect to any Series of Bonds, the Trustee may resign at any
         time with respect to the Bonds of one or more Series (or for fewer
         than all Classes within any such Series) by giving written notice
         thereof to the Issuer.  If an instrument of acceptance by a successor
         Trustee shall not have been delivered to the Trustee within 30 days
         after the giving of such notice of resignation, the resigning Trustee
         may petition any court of competent jurisdiction for the appointment
         of a successor Trustee.

                 (b)      The Trustee may be removed at any time with respect
         to any Series, or any Class within any Series, by Act of the Holders
         representing more than 50% of the Aggregate Current Principal Amount
         of the Outstanding Bonds of that Series, delivered to the Trustee and
         to the Issuer.

                 (c)      If at any time following a default:

                          (1)     the Trustee shall have a conflicting interest
                 under Section 6.8 and TIA Section 310(b) and shall fail to
                 resign or eliminate such conflicting interest in accordance
                 with TIA Section 310(b) after written request therefor by the
                 Issuer or by any Bondholder, or

                          (2)     the Trustee shall cease to be eligible under
                 Section 6.9 or shall become incapable of acting or shall be
                 adjudged a bankrupt or insolvent, or a receiver of the Trustee
                 or of its property shall be appointed, or any public officer
                 shall take charge or control of the Trustee or of its property
                 or affairs for the purpose of rehabilitation, conservation or
                 liquidation,

         then, in any such case, (i) the Issuer by a Board Resolution may
         remove the Trustee, and the Issuer shall join with the Trustee in the
         execution, delivery and performance of all instruments and agreements
         necessary or proper to appoint a successor Trustee and to vest in such
         successor Trustee any property, title, right or power deemed necessary
         or desirable,





                                      -87-
<PAGE>   93
         subject to the other provisions of this Indenture; provided, however,
         if the Issuer does not join in such appointment within fifteen (15)
         days after the receipt by it of a request to do so, or in case an
         event of default has occurred and is continuing, the Trustee may
         petition a court of competent jurisdiction to make such appointment,
         or (ii) subject to Section 5.15, and, in the case of a conflicting
         interest as described in clause (1) above, unless the Trustee's duty
         to resign has been stayed as provided in TIA Section  310(b), any
         Bondholder who has been a bona fide Holder of a Bond for at least six
         months may, on behalf of himself and all others similarly situated,
         petition any court of competent jurisdiction for the removal of the
         Trustee and the appointment of a successor Trustee.

                 (d)      If the Trustee shall resign, be removed or become
         incapable of acting, or if a vacancy shall occur in the office of the
         Trustee with respect to the Bonds of one or more Series, or any Class
         within such Series, for any cause, the Issuer by a Board Resolution
         shall promptly appoint a successor Trustee with respect to such Series
         or such Class.  If within one year after such resignation, removal or
         incapability or the occurrence of such vacancy a successor Trustee
         with respect to any Series shall be appointed by Act of the Holders of
         Bonds representing more than 50% of the Aggregate Current Principal
         Amount of the Outstanding Bonds of that Series delivered to the Issuer
         and the retiring Trustee, the successor Trustee so appointed shall,
         forthwith upon its acceptance of such appointment, become the
         successor Trustee and supersede the successor Trustee appointed by the
         Issuer.  If no successor Trustee shall have been so appointed by the
         Issuer or Bondholders and shall have accepted appointment in the
         manner hereinafter provided, any Bondholder who has been a bona fide
         Holder of a Bond for at least six months may, on behalf of himself and
         all others similarly situated, petition any court of competent
         jurisdiction for the appointment of a successor Trustee.

                 (e)      The Issuer shall give or shall cause to be given
         notice of each resignation and each removal of the Trustee and each
         appointment of a successor Trustee to the Holders of Bonds of each
         Series affected thereby.  Each notice shall include the name of the
         successor Trustee and the address of its Corporate Trust Office.

                 (f)      Except as otherwise provided in the Series Supplement
         with respect to a Series, any costs or expenses incurred in connection
         with the resignation or removal of the Trustee with respect to such
         Series shall be paid by the Trustee.

         SECTION 6.11     Acceptance of Appointment by Successor.

         Every successor Trustee appointed hereunder shall execute, acknowledge
and deliver to the Issuer and the retiring Trustee an instrument accepting such
appointment, and thereupon the resignation or removal of the retiring Trustee
shall become effective and such successor Trustee, without any further act,
deed or conveyance, shall become vested with all the rights, powers, trusts and
duties of the retiring Trustee. Notwithstanding the foregoing, on request of
the Issuer or the successor Trustee, such retiring Trustee shall, execute and
deliver an instrument transferring to such successor Trustee all the rights,
powers and trusts of the retiring Trustee (provided, however, that if the
retiring





                                      -88-
<PAGE>   94
Trustee has been removed or has resigned, pursuant to Section 6.10, with
respect to less than all Series for which it is Trustee, or for less than all
Classes within any such Series, then such transfer shall be limited to its
rights and powers with respect to each Series or Class with respect to which it
has resigned or been removed), and shall duly assign, transfer and deliver to
such successor Trustee all property and money held by such retiring Trustee
hereunder (provided, however, that if the retiring Trustee has been removed or
has resigned, pursuant to Section 6.10, with respect to less than all Series
for which it is Trustee, or for less than all Classes within any such Series,
then such assignment, transfer and delivery by the retiring Trustee shall be
limited to the property and money held by it for the benefit of the Holders of
Bonds of the Series or Class with respect to which it has resigned or been
removed); provided, however, that the execution and delivery of any such
instruments by the retiring Trustee and the succession of a new Trustee shall
not in any way (i) impair or release the liens of the retiring Trustee provided
for in Section 6.7, (ii) constitute a waiver of any charges due the retiring
Trustee under the Indenture, or (iii) constitute a waiver of any right of the
retiring Trustee to institute proceedings to enforce any rights or remedies
available to the retiring Trustee pursuant to this Indenture. Upon request of
any such successor Trustee, the Issuer shall execute and deliver any and all
instruments for more fully and certainly vesting in and confirming to such
successor Trustee all such rights, powers and trusts.

         No successor Trustee shall accept its appointment unless at the time
of such acceptance such successor Trustee shall be qualified and eligible under
this Article.

         SECTION 6.12     Merger, Conversion, Consolidation or Succession to
Business of Trustee.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on the
part of any of the parties hereto.  In case any Bonds have been authenticated,
but not delivered, by the Trustee then in office, any successor by merger,
conversion or consolidation to such authenticating Trustee may adopt such
authentication and deliver the Bonds so authenticated with the same effect as
if such successor Trustee had authenticated such Bonds.

         SECTION 6.13     Preferential Collection of Claims Against Issuer.

         The Trustee, and any co-trustee or separate trustee authorized in
Section 6.14,  shall be subject to TIA Section  311(a), excluding any creditor
relationship listed in TIA Section  311(b), and a Trustee, co-trustee or
separate trustee who has resigned or been removed shall be subject to TIA
Section  311(a) to the extent indicated.





                                      -89-
<PAGE>   95
         SECTION 6.14     Co-trustees and Separate Trustees.

         At any time or times, for the purpose of meeting the legal
requirements of the TIA or of any jurisdiction in which any of a Trust Estate
may at the time be located, or the requirements of the Series Supplement with
respect to any Series of Bonds, the Issuer and the Trustee shall have power to
appoint, and, upon the written request of the Trustee or of the Holders of
Bonds representing more than 50% of the Aggregate Current Principal Amount of
the Outstanding Bonds of the Series or Class, as the case may be, secured by
the Trust Estate with respect to which a co-trustee or separate trustee is
being appointed, the Issuer shall for such purpose join with the Trustee in the
execution, delivery and performance of all instruments and agreements necessary
or proper to appoint, one or more Persons approved by the Trustee either to act
as co-trustee, jointly with the Trustee, of all or any part of such Trust
Estate, or to act as separate trustee of any such property, in either case with
such powers as may be provided in the instrument of appointment, and to vest in
such Person or Persons in the capacity aforesaid, any property, title, right or
power deemed necessary or desirable, subject to the other provisions of this
Section.  If the Issuer does not join in such appointment within 15 days after
the receipt by it of a request so to do, or in case an Event of Default has
occurred and is continuing, the Trustee alone shall have power to make such
appointment.

         Should any written instrument from the Issuer be required by any
co-trustee or separate trustee so appointed for more fully confirming to such
co-trustee or separate trustee such property, title, right or power, any and
all such instruments shall, on request, be executed, acknowledged and delivered
by the Issuer.

         Every co-trustee or separate trustee shall, to the extent permitted by
law, but to such extent only, be appointed subject to the following terms:

                 (1)      The Bonds shall be authenticated and delivered and
         all rights, powers, duties and obligations hereunder in respect of the
         custody of securities, cash and other personal property held by, or
         required to be deposited or pledged with, the Trustee hereunder, shall
         be exercised, solely by the Trustee.

                 (2)      The Trustee at any time, by an instrument in writing
         executed by it, with the concurrence of the Issuer evidenced by a
         Board Resolution, may accept the resignation of or remove any
         co-trustee or separate trustee appointed under this Section, and, in
         case an Event of Default has occurred and is continuing, the Trustee
         shall have power to accept the resignation of, or remove, any such
         co-trustee or separate trustee without the concurrence of the Issuer.
         Upon the written request of the Trustee, the Issuer shall join with
         the Trustee in the execution, delivery and performance of all
         instruments and agreements necessary or proper to effectuate such
         resignation or removal.  A successor to any co-trustee or separate
         trustee so resigned or removed may be appointed in the manner provided
         in this Section.

                 (3)      No co-trustee or separate trustee hereunder shall be
         personally liable by reason of any act or omission of the Trustee, or
         any other such trustee hereunder, and the





                                      -90-
<PAGE>   96
         Trustee shall not be personally liable by reason of any act or
         omission of any co-trustee or other such separate trustee hereunder.

                 (4)      Any Act of Bondholders delivered to the Trustee shall
         be deemed to have been delivered to each such co-trustee and separate
         trustee.

         SECTION 6.15     Authenticating Agents.

         Upon the request of the Issuer, the Trustee shall appoint an
Authenticating Agent with power to act on its behalf and subject to its
direction in the authentication and delivery of the Bonds of each Series
designated for such authentication by the Issuer and containing provisions
therein for such authentication (or with respect to which the Issuer has made
other arrangements, satisfactory to the Trustee and such Authenticating Agent,
for notation on the Bonds of such Series of the authority of an Authenticating
Agent appointed after the initial authentication and delivery of such Bonds) in
connection with transfers and exchanges under Sections 2.6 and 2.7, as fully to
all intents and purposes as though the Authenticating Agent had been expressly
authorized by those Sections to authenticate and deliver Bonds of such Series.
Notwithstanding the foregoing, if an Authenticating Agent for a Series is
designated in the related Series Supplement, no separate request or appointment
shall be required.  For all purposes of this Indenture (other than in
connection with the authentication and delivery of Bonds pursuant to Sections
2.5 and 2.12 in connection with their initial issuance and for purposes of
Section 2.8), the authentication and delivery of Bonds by the Authenticating
Agent pursuant to this Section shall be deemed to be the authentication and
delivery of Bonds "by the Trustee."  Such Authenticating Agent shall at all
times be a Person that both meets the requirements of Section 6.9 for the
Trustee hereunder and has its principal office in the Borough of Manhattan,
City and State of New York.

         Any Authenticating Agent for a Series shall also serve as Bond
Registrar or co-Bond Registrar for such Series, as provided in Section 2.7.
Any Authenticating Agent appointed by the Trustee pursuant to the terms of this
Section 6.15 or pursuant to the terms of any Supplemental Indenture shall
deliver to the Trustee as a condition precedent to the effectiveness of such
appointment an instrument accepting the trusts, duties and responsibilities of
Authenticating Agent and of Bond Registrar or co-Bond Registrar and
indemnifying the Trustee for and holding the Trustee harmless against, any
loss, liability or expense (including reasonable attorneys, fees) incurred
without negligence or bad faith on its part, arising out of or in connection
with the acceptance, administration of the trust or exercise of authority by
such Authenticating Agent, Bond Registrar or co-Bond Registrar.

         Any corporation into which any Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, consolidation or conversion to which any Authenticating Agent
shall be a party, or any corporation succeeding to the corporate trust business
of any Authenticating Agent, shall be the successor of the Authenticating Agent
hereunder, if such successor corporation is otherwise eligible under this
Section, without the execution or filing of any further act on the part of the
parties hereto or the Authenticating Agent or such successor corporation.





                                      -91-
<PAGE>   97
         Any Authenticating Agent may at any time resign by giving written
notice of resignation to the Trustee and the Issuer.  The Trustee may at any
time terminate the agency of any Authenticating Agent by giving written notice
of termination to such Authenticating Agent and the Issuer.  Upon receiving
such a notice of resignation or upon such a termination, or in case at any time
any Authenticating Agent shall cease to be eligible under this Section, the
Trustee shall promptly appoint a successor Authenticating Agent, shall give
written notice of such appointment to the Issuer and shall mail notice of such
appointment to all Holders of Bonds of the applicable Series.

         The Trustee agrees, subject to Section 6.1(e), to pay to any
Authenticating Agent from time to time reasonable compensation for its services
and the Trustee shall be entitled to be reimbursed for such payments, subject
to Section 6.7.  The provisions of Sections 2.10, 6.4 and 6.5 shall be
applicable to any Authenticating Agent.

         SECTION 6.16     Alternate Trustees.

         Whenever the Issuer shall so determine, a Person different than the
initial Trustee may be appointed by the Issuer to act as an alternate Trustee
with respect to any Series of Bonds proposed to be issued hereunder.  Such
alternate Trustee shall also satisfy the eligibility requirements of the TIA
and this Article VI.  The Issuer shall have the power to appoint a separate
Trustee to act as Trustee with respect to any Series of Bonds proposed to be
issued hereunder and each such alternate Trustee and the Issuer alone shall
have the power to execute and deliver an agreement supplemental hereto, which
agreement supplemental hereto may be the Series Supplement for such Series of
Bonds, which shall contain such provisions as shall be deemed necessary or
desirable to confirm that all the rights, powers, trust and duties of the
Trustee with respect to the Outstanding Bonds of any Series as to which the
Trustee initially named in the Series Supplement for such Series is not
retiring, shall continue to be vested in such initial Trustee, and shall add to
or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trust hereunder by more
than one Trustee with respect to the Outstanding Bonds of any Series as to
which the initial Trustee named herein is not to be the Trustee or with respect
to any proposed Series of Bonds, it being understood that nothing herein or in
such supplemental agreement shall constitute such Trustees as co-Trustees of
the same trust and that each such Trustee shall be a Trustee of a separate
trust or trusts with respect to different Series of Bonds each concurrently
Outstanding.  No separate or alternate Trustee shall accept its appointment
unless, at the time of such acceptance such separate Trustee shall be qualified
and eligible under this Article VI.





                                      -92-
<PAGE>   98
                                  ARTICLE VII

                         BONDHOLDERS' LISTS AND REPORTS

         SECTION 7.1      Issuer to Furnish Trustee Names and Addresses of
                          Bondholders.

                 (a)      The Issuer will furnish or cause to be furnished to
         the Trustee (i) semi-annually, not less than 45 days nor more than 60
         days after each Interest Payment Date for a Series, a list, in such
         form as the Trustee may reasonably require, of the names and addresses
         of the Holders of Bonds of such Series, and (ii) at such other times,
         as the Trustee may request in writing, within 30 days after receipt by
         the Issuer of any such request, a list of similar form and content as
         of a date not more that 10 days prior to the time such list is
         furnished; provided, however, that so long as the Trustee is the Bond
         Registrar, no such list shall be required to be furnished.  If the
         Bonds of a particular Series have Interest Payment Dates which are
         more frequent than semi-annual, then the applicable Interest Payment
         Dates for purposes of clause (i) of the preceding sentence shall be
         the Interest Payment Date occurring closest to six months after the
         Closing Date for such Series and each Interest Payment Date occurring
         at six-month intervals thereafter.

                 (b)      In addition to furnishing to the Trustee the
         Bondholder lists, if any, required under subsection (a), the Issuer
         shall also furnish all Bondholder lists, if any, required under
         Section 3.3 at the times required by said Section 3.3.

         SECTION 7.2      Preservation of Information; Communications to
                          Bondholders.

                 (a)      The Trustee shall preserve, in as current a form as
         is reasonably practicable, the names and addresses of the Holders of
         Bonds contained in the most recent list, if any, furnished to the
         Trustee as provided in Section 7.1 and the names and addresses of the
         Holders of Bonds received by the Trustee in its capacity as Bond
         Registrar.  The Trustee may destroy any list furnished to it as
         provided in Section 7.1 upon receipt of a new list so furnished.

                 (b)      The Issuer, the Trustee and the Bond Registrar shall
          have the protection of TIA Section 312(c).

         SECTION 7.3      Reports by Trustee.

                 (a)      In addition to any report required to be delivered by
         the Trustee to the Holders of Bonds of any Series pursuant to TIA
         Section  313(a), additional reports may be required to be delivered by
         the Trustee as set forth in the Series Supplement for any Series of
         Bonds.

                 (b)      For purposes of the information required to be
         included in any reports to be delivered by the Trustee pursuant to TIA
         Sections  313(a)(3), 313(b)(1) (if applicable), 313(b)(2),





                                      -93-
<PAGE>   99
         or pursuant to the Series Supplement for any Series of Bonds as may be
         required pursuant to Section 7.3(a), the principal amount of
         "indenture securities" outstanding on the date as of which such
         information is provided shall be the Aggregate Current Principal
         Amount of the then Outstanding Bonds of the particular Series covered
         by the report.

                 (c)      With respect to any report required to be delivered
          by the Trustee pursuant to TIA Section 313(a) or (b), or as otherwise
          required pursuant to Section 7.3(a), the Trustee shall mail any such
          report to
         all Holders of such Series of Bonds within 30 days after May 15 of
         each year (the "reporting date"), commencing with the year after the
         issuance of such Series of Bonds.

                 (d)      Unless provided otherwise in the Series Supplement
         for any Series of Bonds, upon written request in form satisfactory to
         the Trustee received by the Trustee at least fifteen days prior to the
         next Payment Date, the Trustee will provide notice to a Bondholder on
         such Payment Date of such Bondholder's priority status with respect to
         such Bondholder's requests for redemption pursuant to Section 10.4.

         SECTION 7.4      Reports by Issuer.

         The Issuer (a) shall file with the Trustee within 15 days after it
files them with the Commission copies of the annual reports and of the
information, documents, and other reports (or copies of such portions of any of
the foregoing as the Commission may by rules and regulations prescribe) which
the Issuer is required to file with the Commission pursuant to Section 13 or
15(d) of the Securities Exchange Act of 1934 and (b) shall also comply with the
other provisions of TIA Section  314(a).





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                                  ARTICLE VIII

           ACCOUNTS, PAYMENTS OF INTEREST AND PRINCIPAL, AND RELEASES

         SECTION 8.1      Collection of Moneys.

         Except as otherwise expressly provided herein, the Trustee may demand
payment or delivery of, and shall receive and collect, directly and without
intervention or assistance of any fiscal agent or other intermediary, all money
and other property payable to or receivable by the Trustee pursuant to this
Indenture.  The Trustee shall hold all such money and property received by it
as part of the Trust Estate with respect to which it was received, and shall
apply it as provided in this Indenture.  If the Trustee shall not have received
a Distribution with respect to any Certificate by the Business Day immediately
following the related Distribution Date, the Trustee shall, unless the Issuer
shall have made provisions satisfactory to the Trustee for delivery to the
Trustee of an amount equal to such Distribution, request the issuer or
guarantor of such Certificate, as appropriate, to make such payment as promptly
as practicable or legally permitted.  If the Trustee shall subsequently receive
any such Distribution, it may withdraw such request.  Notwithstanding any other
provision hereof, the Trustee shall deliver to the Issuer or its designee or
assignee any Distribution received with respect to a Certificate after the
related Distribution Date to the extent that the Issuer previously made payment
or provision for payment with respect to such Distribution in accordance with
this Section 8.1, and any such Distribution shall not be deemed part of the
Trust Estate for the related Series.

         Except as otherwise expressly provided in this Indenture, if,
following any request by the Trustee for payment of a late Distribution, any
default occurs in the making of such payment, or if a default occurs in any
other performance required under any Certificate with respect to any Series,
the Trustee may, and upon the request of the Holders of Bonds representing more
than 50% of the Aggregate Current Principal Amount of the Outstanding Bonds of
the affected Series shall, take such action as may be appropriate to enforce
such payment or performance including the institution and prosecution of
appropriate Proceedings.  Any such action shall be without prejudice to any
right to claim a Default or Event of Default with respect to such Series under
this Indenture and to proceed thereafter as provided in Article V.

         SECTION 8.2      Collection Accounts.

                 (a)      On or before the Closing Date for a Series, the
         Issuer shall open, at the Corporate Trust Office, one or more accounts
         (each of which shall be an Eligible Account) which shall collectively
         be the "Collection Account" for such Series.  The Trustee shall
         promptly deposit in the related Collection Account all Distributions
         received by it with respect to Certificates securing the Bonds of a
         Series (other than Distributions required to be delivered to the
         Issuer pursuant to Section 8.1).  All Distributions deposited from
         time to time in a Collection Account, any amount required to be
         deposited in the Collection Account for a Series pursuant to Section
         2.12(g) and the terms of the related Series Supplement, all





                                      -95-
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         other deposits therein pursuant to this Indenture, and all investments
         made with such moneys, including all income or other gain from such
         investments, shall be held by the Trustee in such Collection Account
         as part of the Trust Estate for the related Series as herein provided,
         subject to withdrawal by the Trustee for the purposes set forth in
         subsections (c) and (d) of this Section 8.2.  All funds withdrawn from
         a Collection Account pursuant to subsection (c) of this Section 8.2
         for the purpose of making payments to the Holders of Bonds of the
         related Series shall be applied in accordance with Section 3.3.

                 (b)      So long as no Default or Event of Default shall have
         occurred and be continuing with respect to a Series of Bonds, all or a
         portion of the related Collection Account shall be invested and
         reinvested by the Trustee at the Issuer's direction or pursuant to the
         provisions of the related Series Supplement in one or more Eligible
         Investments bearing interest or sold at discount. No such investment
         shall mature later than the Business Day immediately preceding the
         next Principal Reduction Date for such Series unless permitted
         otherwise by the Rating Agencies.

                 Notwithstanding the foregoing,

                          (i)     except as permitted by clause (ii) below, no
                 investment of any amount held in a Collection Account may
                 mature later than the Business Day immediately preceding the
                 next Payment Date for Bonds of the related Series unless
                 permitted otherwise by the Rating Agencies,

                          (ii)    any investment (including repurchase
                 agreements) on which the Trustee (or any agent of the Trustee
                 acceptable to the Rating Agency or Agencies that rated such
                 Series) is the obligor, may mature on a Payment Date or
                 Special Payment Date if, under this Section 8.2, such
                 investment could otherwise mature on the Business Day
                 immediately preceding such Payment Date or Special Payment
                 Date and

                          (iii)   if there are any Overdue Bonds of a Series
                 Outstanding, funds then in the related Collection Account may
                 be invested in investments maturing later than the Business
                 Day immediately preceding the next Special Payment Date,
                 unless permitted otherwise by the Rating Agencies, only to the
                 extent that after giving effect to such proposed investment
                 the amount of funds that would be on deposit in the Collection
                 Account (including therein the amount of Distributions and
                 proceeds of investments scheduled to be deposited in such
                 Collection Account prior to such next Special Payment Date)
                 and would be available to make payments on the Bonds of such
                 Series on such next Special Payment Date, exceeds any payments
                 of principal of or interest on any Overdue Bonds of such
                 Series due and payable on such next Special Payment Date.

                 All income or other gains from investment of moneys deposited
         in a Collection Account shall be deposited by the Trustee in such
         Collection Account





                                      -96-
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         immediately upon receipt, and any loss resulting from such investment
         shall be charged to such Collection Account.

                 (c)      Unless the Bonds of a Series have been declared due
         and payable pursuant to Section 5.2 and moneys collected by the
         Trustee with respect to such Series are being applied in accordance
         with Section 5.8, amounts on deposit in the related Collection Account
         on any Payment Date or Special Payment Date shall be withdrawn from
         such Collection Account, in the amounts required, for application as
         follows:

                          (i)     on any Special Payment Date, except to the
                 extent provided otherwise in the applicable Series Supplement
                 and to the extent permitted by applicable law,

                                  first, to the payment of all interest due
                          with respect to any Overdue Bonds of such Series
                          called for redemption, pro rata without any
                          preference or priority as to Maturity, and

                                  second, to the payment of amounts due with
                          respect to principal of such Overdue Bonds (including
                          any portion of an installment of principal required
                          to be paid which was not paid therefor, and any
                          amounts remaining unpaid on Bonds with respect to
                          which the Redemption Price was not paid in full on
                          the applicable Redemption Date), in the order in
                          which such amounts became due and pro rata among all
                          amounts which became due on the same date, each such
                          amount being the amount thereof set forth in the
                          applicable Special Payment Date Statement; and

                          (ii)    on any Payment Date, in accordance with the
                 order of priority of payment specified in the related Series
                 Supplement;

         each such amount being the amount thereof set forth in the applicable
         Special Payment Date Statement or Payment Date Statement, as the case
         may be.

                 (d)      On or after each Payment Date for a Series, so long
         as the Trustee shall have prepared a Payment Date Statement in respect
         of such Payment Date and shall have made, or, in accordance with
         Section 3.3, set aside from amounts in the Collection Account for such
         Series an amount sufficient to make the payment of principal of and
         interest on the Bonds of such Series then required to be made as
         indicated in such Payment Date Statement, the cash balance, if any,
         then remaining in the related Collection Account, less the amount of
         Distributions due on the related Certificates but not received on the
         immediately preceding Distribution Date and the amount of any
         Reinvestment Income then payable to the Bond Manager, shall be
         withdrawn from such Collection Account by the Trustee and applied

                          first, to the payment of any unpaid amount due the
                 Trustee pursuant to Section 6.7,





                                      -97-
<PAGE>   103
                          second, to the payment of any unpaid amount due any
                 firm of Independent Accountants pursuant to Section 8.9(a),

                          third, to the extent required by the related Series
                 Supplement, to deposit an amount in the related Expense Fund
                 (any amount so deposited being released from the lien of the
                 Indenture pursuant to Section 8.10).

         Except as otherwise provided in the related Series Supplement, the
         balance, if any, of the amount so withdrawn shall be released from the
         lien of this Indenture and paid by the Trustee (i) with respect to
         each Series of Bonds for which a REMIC election or elections has or
         have not been made and will not be made, to the Issuer or, upon Issuer
         Order, to its assignee, or (ii) where such an election or elections
         has or have been made or will be made, to the  Residual Interest that
         is entitled to such  assets as stipulated in the related Series
         Supplement, in each case subject to satisfaction of the following
         conditions:

                          (i)     no Default or Event of Default shall have
                 occurred and be continuing,

                          (ii)    an Independent Accountant shall have
                 delivered to the Trustee the certificate or opinion in respect
                 of such Payment Date required by Section 8.9(b);

                          (iii)   the Issuer shall have delivered to the
                 Trustee an Officers' Certificate stating that all conditions
                 precedent to such release specified in this subsection (d)
                 have been satisfied, and

                          (iv)    the Issuer shall have delivered to the
                 Trustee an Opinion of Counsel to the effect that all documents
                 delivered to the Trustee in connection with such release
                 comply as to form with the requirements of this subsection (d)
                 and all conditions precedent to such release specified in this
                 subsection (d) have been satisfied.

         SECTION 8.3      Reserved.

         SECTION 8.4      Reserved.

         SECTION 8.5      Reserved.

         SECTION 8.6      General Provisions Regarding Pledged Accounts.

                 (a)      Each Pledged Account shall relate solely to the Bonds
         of the Series with respect to which it was established and to the
         Certificates and other property securing such Series. Funds and other
         property in each Pledged Account shall not be commingled with any
         other moneys or property of the Issuer or any Affiliate thereof.
         Notwithstanding the foregoing, the Trustee may hold any funds or other
         property received or held by it as part of a Pledged Account in
         collective accounts maintained by it in the normal course of its





                                      -98-
<PAGE>   104
         business and containing funds or property held by it for other Persons
         (which may include the Issuer or an Affiliate), provided that such
         accounts are under the sole control of the Trustee and the Trustee
         maintains adequate records indicating the ownership of all such funds
         or property and the portions thereof held for credit to each Pledged
         Account.

                 (b)      The Issuer will not direct the Trustee to make any
         investment of any funds in a Pledged Account or to sell any investment
         held in a Pledged Account except under the following terms and
         conditions:

                          (i)     each such investment shall be made in the
                 name of the Trustee (in its capacity as such) or in the name
                 of a Qualified Nominee of the Trustee (or, if, as indicated by
                 an Opinion of Counsel delivered to the Trustee, applicable law
                 provides for perfection of pledges of an investment not
                 evidenced by a certificate or other instrument through
                 registration of such pledge on books maintained by or on
                 behalf of the issuer of such investment, such pledge may be so
                 registered),

                          (ii)    the Trustee shall have sole control over such
                 investment, the income thereon and the proceeds thereof,

                          (iii)   any certificate or other instrument
                 evidencing such investment shall be delivered directly to the
                 Trustee or its agent, and

                          (iv)    the proceeds of each sale of such an
                 investment shall be remitted by the purchaser thereof directly
                 to the Trustee for deposit in the Pledged Account in which
                 such investment was held.

                 (c)      Except as otherwise provided in the related Series
         Supplement, if a REMIC election or elections has or have been made or
         will be made in respect of the assets securing such Series, prior to
         any disposition of any investment in a Pledged Account that would
         result in a gain to a REMIC of such Series, the Trustee shall inform
         the Issuer of its intention to dispose of such investment and of the
         possibility that such disposition could result in the imposition of
         taxes on "prohibited transactions" as defined in Section 860F of the
         Code.  If any amounts are needed for disbursement from a Pledged
         Account and sufficient uninvested funds are not available therein to
         make such disbursement, in the absence of an Issuer Order for the
         liquidation of investments held therein in an amount sufficient to
         provide the required funds, the Trustee shall cause to be sold or
         otherwise converted to cash a sufficient amount of the investments in
         such Pledged Account.

                 (d)      The Trustee shall not in any way be held liable by
         reason of any insufficiency in any Pledged Account except for losses
         on investments which are liabilities of the Trustee (or of any agent
         of the Trustee).


                 (e)      All investments of funds in a Pledged Account and all
         sales of investments held in a Pledged Account shall, except as
         provided below, be made by the Trustee in





                                      -99-
<PAGE>   105
         accordance with an Issuer Order.  Subject to compliance with the
         requirements of Section 8.2(b), such Issuer Order may authorize the
         Trustee to make the specific investments set forth therein, to make
         investments from time to time consistent with the general instructions
         set forth therein, or to make specific investments pursuant to
         written, telegraphic or telephonic instructions of the employees or
         agents of the Issuer identified therein, in each case in such amounts
         as such Issuer Order shall specify.

                 In the event that:

                          (i)     the Issuer shall have failed to give
                 investment directions to the Trustee by 12:30 p.m. Eastern
                 Time on any Business Day authorizing the Trustee to invest the
                 funds then in a Pledged Account,

                          (ii)    a Default or Event of Default with respect to
                 such Series shall have occurred and be continuing but the
                 Bonds of such Series shall not have been declared due and
                 payable pursuant to Section 5.2, or

                          (iii)   an Event of Default with respect to such
                 Series shall have occurred and be continuing, the Bonds of
                 such Series shall have been declared due and payable pursuant
                 to Section 5.2, and amounts collected or receivable from the
                 related Trust Estate are being applied in accordance with
                 Section 5.8,

         the Trustee shall invest and reinvest the funds then in each related
         Pledged Account to the fullest extent practicable, in such manner as
         the Trustee shall from time to time determine, but only in one or more
         Eligible Investments bearing interest or sold at a discount.  All
         investments made pursuant to clause (i) above shall mature on the next
         Business Day following the date of such investment, all such
         investments made pursuant to clause (ii) above shall mature no later
         than the maturity date therefor permitted by Section 8.2(b), or by the
         terms of any related Series Supplement, whichever is applicable, and
         all investments made pursuant to clause (iii) above shall mature no
         later than the first date following the date of such investment on
         which the Trustee proposes to make a distribution to Holders of Bonds
         of the related Series pursuant to Section 5.8.

                 (f)      Subject to the restriction on the maturity of
         investments set forth in Sections 8.2(b), or in any related Series
         Supplement, and notwithstanding paragraph (e) above, the Issuer will
         give appropriate and timely investment directions to the Trustee such
         that at the close of business on not more than two Business Days in
         any one calendar year not more than an aggregate of $50,000 of funds
         in the Pledged Accounts  for a Series are not invested pursuant,
         directly or indirectly, to an Issuer Order in Eligible Investments
         bearing interest or sold at a discount which mature on or after the
         opening of business on the next Business Day.

                 (g)      Unless it shall have otherwise agreed in writing with
         the Issuer, the Trustee shall not be required to enter into repurchase
         obligations for the investment of funds in any





                                     -100-
<PAGE>   106
         Pledged Account with any Person whose repurchase obligations would be
         Eligible Investments only if the requirements of subclause (b) of
         clause (iii) of the definition of the term "Eligible Investments" were
         complied with in connection with such investment.

         SECTION 8.7      Reports by Trustee to Bondholders.

         On each Payment Date for a Series the Trustee shall deliver a written
report

                 (a)      to each Holder of Bonds of a Class of such Series on
         which a payment of principal and interest is then being made, setting
         forth the amount of such payment which represents principal and the
         amount which represents interest, and the principal amount of an
         Individual Bond of each such Class after giving effect to the payment
         of principal made on such Payment Date;

                 (b)      to each Holder of Bonds of a Class of such Series on
         which a payment of interest only is then being made, setting forth the
         Class Current Principal Amount and Class Imputed Principal Balance of
         Bonds of each Class of such Series Outstanding after giving effect to
         the payment of principal made on such Payment Date and the allocation
         of all Realized Losses and any Junior Bond Writedown Amount then
         allocable to such Class and after including in the aggregate principal
         amount of Compound Interest Bonds Outstanding the amount of any
         accrued interest added to the principal amount thereof on such Payment
         Date; and

                 (c)      to each Holder of a Compound Interest Bond of such
         Series (but only if such Holder shall not have received on such
         Payment Date a payment of interest equal to the entire amount of
         Accrued Bond Interest on such Bond for such Payment Date, or since the
         related Accrual Date if no Payment Date has yet occurred), setting
         forth

                          (i)     the information contained in the report
                 delivered pursuant to clause (b) above,

                          (ii)    the interest accrued on an Individual Bond of
                 such Class of Compound Interest Bonds through the Interest
                 Accrual Period for such Payment Date and added to the
                 principal of such Compound Interest Bond, and

                          (iii)   the principal amount of an Individual Bond of
                 such Class of Compound Interest Bonds after giving effect to
                 the addition thereto of interest accrued thereon during the
                 Interest Accrual Period for such Payment Date.

                 (d)      to each Holder of Bonds of a Class of such Series,
         the aggregate amount of Realized Losses and any Junior Bond Write Down
         Amount allocated to the Bonds of such Class on such Payment Date;





                                     -101-
<PAGE>   107
                          (i)     the amount of any Realized Losses or portion
                 of any Junior Bond Write Down Amount allocated to an
                 Individual Bond of such Class on such Payment Date; and

                          (ii)    the Imputed Principal Balance and the Current
                 Principal Amount of an Individual Bond of such Class on such
                 Payment Date,

in the case of (iii) above, after application of all payments of principal on
such Bonds and allocation of any Realized Losses and the Junior Bond Write Down
Amount, if any, allocable on such Payment Date.

         SECTION 8.8      Reports by Trustee.

         In addition to any statements required to be delivered or prepared by
the Trustee pursuant to Sections 2.9 or 8.2, the Trustee shall deliver to the
Issuer and the Independent Accountants appointed pursuant to Section 8.9,
within two Business Days after the request of either the Issuer or such
Independent Accountants, a written report setting forth the amount of each
Pledged Account or Fund established hereunder and the identity of the
investments included therein.  Without limiting the generality of the
foregoing, the Trustee shall, upon the request of the Issuer, promptly transmit
to the Issuer copies of all accountings of, and information with respect to,
Distributions furnished it by the issuer of, or the paying agent for, each
Certificate and shall promptly notify the Issuer if, or on the third Business
Day after any Distribution Date in the case of a Conventional Certificate, any
related Distribution then due or any portion thereof has not been received by
the Trustee.

         SECTION 8.9      Reports by Independent Accountants.

                 (a)      At the Closing Date for a Series the Issuer shall
         appoint the firm of Independent Accountants for purposes of preparing
         and delivering the reports or certificates with respect to such Series
         required by this Section 8.9.  Upon any resignation by such firm the
         Issuer shall promptly notify the Trustee and appoint a successor
         thereto that shall also be a firm of Independent Accountants of
         recognized national reputation.  If the Issuer shall fail to appoint a
         successor to a firm of Independent Accountants which has resigned on
         or before the fifteenth day after such resignation, the Trustee shall
         promptly notify the Issuer of such failure in writing.  If the Issuer
         shall not have appointed a successor within ten days thereafter the
         Trustee shall promptly appoint a successor firm of Independent
         Accountants of recognized national reputation.  The fees of such
         successor shall be payable by the Issuer, and any fees not so paid by
         the Issuer may be paid by the Trustee on behalf of the Issuer, from
         amounts otherwise payable to the Issuer from the related Collection
         Account pursuant to Section 8.2(d).

                 (b)      The Issuer, or the Trustee on behalf of the Issuer,
         shall direct the firm of Independent Accountants appointed pursuant to
         subsection (a) (or any successor firm so appointed) to review, and
         prepare and deliver to the Trustee a report or certificate with





                                     -102-
<PAGE>   108
         respect to each Payment Date Statement specified in the related Series
         Supplement delivered by the Trustee pursuant to Section 2.9(e).

                 Such report or certificate shall state that

                          (i)     such Independent Accountants have reviewed
                 such Payment Date Statement, 

                          (ii)    they have performed the calculations
                 required to be made in connection therewith,

                          (iii)   they have reviewed the accountings of the
                 related Distributions and of the related Collection Account
                 furnished by the Trustee with respect to the Distribution Date
                 relative to such Payment Date Statement, and

                          (iv)    based upon such review, such firm of
                 Independent Accountants has no material exceptions to the
                 Trustee's calculations set forth in any of such Statements, or
                 that all of such exceptions are set forth in such report or
                 certificate.

         Such report or certificate shall be delivered to the Trustee, and a
         copy of such report or certificate shall be delivered to the Issuer,
         prior to the close of business on the second Business Day following
         the related Calculation Date. If such firm of Independent Accountants
         sets forth any material exceptions to the Trustee's Payment Date
         Statement in its report or certificate, the Trustee's Payment Date
         Statement shall be deemed to have been amended to reflect such
         exceptions, and a copy of such report shall be delivered to each
         Rating Agency rating the related Bonds.

                 (c)      If the Trustee shall fail to deliver to the Issuer
         any Payment Date Statement by the due date therefor, the Issuer shall,
         at the opening of business on the next Business Day after such due
         date, direct the firm of Independent Accountants appointed pursuant to
         subsection (a) to prepare and deliver to the Trustee such Payment Date
         Statement at the expense of the Issuer, no later than 2:00 p.m. on the
         Business Day following the day on which such direction was given. Any
         fees of such Independent Accountants not paid by the Issuer may be
         paid by the Trustee, on behalf of the Issuer, from amounts otherwise
         payable to the Issuer from the related Collection Account pursuant to
         Section 8.2(d).

         SECTION 8.10     Expense Fund.

                 (a)      Except as otherwise provided in the related Series
         Supplement, any cash or Eligible Investments received by the Trustee
         for deposit in the Expense Fund for a Series pursuant to Sections
         2.12(g) or 8.2(d) hereof, together with any other Eligible Investments
         in which amounts in such Expense Fund are or will be invested or
         reinvested during the term of the Bonds of such Series, shall be held
         by the Trustee subject to disbursement and withdrawal as herein
         provided, but shall not be security for the Bonds of such Series.





                                     -103-
<PAGE>   109
                 (b)      Except as otherwise provided in the related Series
         Supplement all or a portion of the Expense Fund for a Series shall be
         invested and reinvested at the Issuer's direction in one or more
         Eligible Investments.

                 (c)      Except as otherwise provided in the related Series
         Supplement amounts on deposit in the Expense Fund for a Series shall
         be applied by the Trustee to the payment of expenses relating to the
         administration of the Bonds of such Series (other than interest
         expense on such Bonds) specified in the related Series Supplement to
         the extent that such expenses have not been paid by the Issuer or from
         other sources.

                 (d)      Except as otherwise provided in the related Series
         Supplement, upon full and final payment of all Outstanding Bonds of
         the related Series and payment of all unpaid expenses relating to the
         administration of the Bonds of such Series (other than interest
         expense on such Bonds) covered by such Expense Fund, the Trustee shall
         pay to or upon the order of the Issuer all amounts remaining on
         deposit in the Expense Fund for such Series.

         SECTION 8.11     Substitution of Certificates with Eligible Substitute
                          Certificates.

                 (a)      Except as otherwise provided in the related Series
         Supplement, the Issuer shall have the right to Grant one or more
         Eligible Substitute Certificates for any one or more Certificates
         securing a Series of Bonds, any such substitution to take place on a
         Payment Date, subject, however, to satisfaction of the following
         conditions:

                          (i)     no Default or Event of Default shall have
                 occurred and be continuing;

                          (ii)    if the Eligible Substitute Certificates to be
                 Granted in substitution for the Certificates to be released
                 are issued in definitive or certificated form, such Eligible
                 Substitute Certificates, registered in the name of the Trustee
                 (or, if requested by the Trustee, in the name of its Qualified
                 Nominee) shall have been delivered to the Trustee;

                          (iii)   if the Eligible Substitute Certificates to be
                 Granted in substitution for the Certificates to be released
                 are issuable in book entry form only, the Trustee shall have
                 received (A) written notification or confirmation from the
                 operator of the book-entry system that ownership of such
                 Eligible Substitute Certificates has been registered in the
                 name of the Trustee or a Qualified Nominee or (B) notification
                 from a bank, broker, clearing corporation or other Person that
                 maintains securities accounts for the Issuer or the Trustee
                 and is acting in that capacity with respect to such Eligible
                 Substitute Certificates that either (1) ownership of such
                 Eligible Substitute Certificates in the name of the Issuer and
                 the Grant thereof to the Trustee have been entered on the
                 securities accounts books of such Person or (2) ownership of
                 such Eligible Substitute Certificates in the name of the
                 Trustee has been entered on the securities accounts books of
                 such Person;





                                     -104-
<PAGE>   110
                          (iv)    the Trustee shall have received a certificate
                 or opinion from a firm of Independent Accountants stating that
                 (A) such firm has reviewed (1) the terms of the Certificates
                 proposed to be released and of the Eligible Substitute
                 Certificates proposed to be Granted in substitution therefor,
                 (2) the Issuer's calculations of the Certificate Principal
                 Balance of  the Certificates to be released and of the
                 Eligible Substitute Certificates to be granted in substitution
                 therefor and the Issuer's calculations of the aggregate
                 Certificate Principal Balance of all of the Certificates
                 pledged to secure the Bonds immediately following the
                 substitutions and (3) the Issuer's calculations demonstrating
                 that the Eligible Substitute Certificates proposed to be
                 Granted in substitution for the Certificates to be released
                 satisfy all conditions precedent to such release and
                 substitution set forth in the Indenture and the related Series
                 Supplement that are of a type that can be verified by
                 mathematical computations and (B) based on such review,
                 nothing has come to their attention that the Issuer's
                 calculations were not made in compliance with the terms of the
                 Indenture and the related Series Supplement and are not
                 mathematically correct;

                          (v)     the Trustee shall have received an Officers'
                 Certificate stating that all conditions precedent to such
                 release specified in this subsection (a) and in the related
                 Series Supplement have been satisfied;

                          (vi)    the Trustee shall have received an Opinion of
                 Counsel to the effect (A) that all documents delivered to the
                 Trustee in connection with such release comply as to the form
                 with the requirements of this subsection (a) and the
                 requirements, if any, set forth in the related Series
                 Supplement, (B) that all conditions to such release specified
                 in this subsection (a) and in the related Series Supplement
                 have been satisfied and (C) of the opinion required by Section
                 2.12(c) but only as applicable to the portion of the Trust
                 Estate comprised of the Eligible Substitute Certificates; and

                          (vii)   the Trustee shall have received a certificate
                 of an Independent Person, whose regular business activity
                 includes valuing securities similar to such Eligible
                 Substitute Certificates, as to the fair market value of such
                 Eligible Substitute Certificates, which determination of fair
                 market value shall be based upon generally available market
                 quotations as of a date not earlier than three Business Days
                 prior to the date of Grant to the Trustee.

                 (b)      Upon any such Grant, the Trustee shall transfer and
         assign the replaced Certificates to the Issuer whereupon they shall be
         released from, and no longer subject to, the lien of the Indenture.





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                                   ARTICLE IX

                            SUPPLEMENTAL INDENTURES

         SECTION 9.1      Supplemental Indentures without Consent of
                          Bondholders.

         Without the consent of the Holders of any Bonds, the Issuer, when
authorized by a Board Resolution, and the Trustee, at any time and from time to
time, may enter into one or more indentures supplemental hereto, in form
satisfactory to the Trustee, for any of the following purposes:

                 (1)      to correct or amplify the description of any property
         at any time subject to the lien of this Indenture, or better to
         assure, convey and confirm unto the Trustee any property subject or
         required to be subjected to the lien of this Indenture, or to subject
         to the lien of this Indenture additional property;

                 (2)      to add to the conditions, limitations and
         restrictions on the authorized amount, terms and purposes of the
         issuance, authentication and delivery of any Series of Bonds, as
         herein set forth, additional conditions, limitations and restrictions
         thereafter to be observed;

                 (3)      to set forth the terms of, and security for, any
         Series that has not theretofore been authorized by a Series
         Supplement;

                 (4)      to modify or eliminate any of the terms of this
                          Indenture; provided, however, that

                          (A)     such supplemental indenture shall expressly
                 provide that any such modifications or eliminations shall not
                 be effective with respect to any Outstanding Bond of any
                 Series created prior to the execution of such supplemental
                 indenture; and

                          (B)     the Trustee may, in its discretion, decline
                 to enter into any such supplemental indenture which, in its
                 opinion, would adversely affect its own rights, duties or
                 immunities;

                 (5)      to evidence the succession of another Person to the
         Issuer, and the assumption by any such successor of the covenants of
         the Issuer herein and in the Bonds contained, or the appointment of an
         alternate Trustee under Section 6.16;

                 (6)      to add to the covenants of the Issuer, for the
         benefit of the Holders of all Bonds or of the Bonds of any Series, or
         to surrender any right or power herein conferred upon the Issuer;





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<PAGE>   112
                 (7)      to cure any ambiguity, to correct or supplement any
         provision herein which may be defective or inconsistent with any other
         provision herein, or to amend any other provisions with respect to
         matters or questions arising under this Indenture; provided that such
         action shall not adversely affect in any material respect the
         interests of the Holders of any Series of Bonds; and provided,
         further, that the amendment shall not be deemed to adversely affect in
         any material respect the interests of the Holders of any Series of
         Bonds if the Person requesting the amendment obtains a letter from
         each Rating Agency that the amendment would not result in the
         downgrading or withdrawal of the ratings then assigned to any Series
         of Bonds;

                 (8)      to provide for the issuance of Bonds of any Series
         (including Bonds of a Series theretofore authorized and then
         Outstanding) or any Class within such Series in bearer form with
         coupons ("Bearer Bonds") and for the exchangeability of Bearer Bonds
         and Bonds of the same Series and Class issued in registered form
         ("Registered Bonds"); any such supplemental indenture may provide for
         payments on Bearer Bonds only outside the United States and for
         appointment of a foreign Paying Agent that does not satisfy the
         requirements of clause (ii) of the definition of the term "Eligible
         Investments" but is otherwise acceptable to the rating agencies that
         rated the initial Series of the Bonds and may also contain any
         provisions as may in the Issuer's judgment be necessary, appropriate
         or convenient (a) to permit the Bonds to be issued and sold to or held
         in bearer form by non-United States Persons, (b) to establish
         entitlement to an exemption from United States withholding tax or
         reporting requirements with respect to payments on the Bonds, (c) to
         comply, or facilitate compliance, with other applicable laws or
         regulations, (d) to provide for usual and customary provisions for
         communication (by notice publication, maintenance of lists of holders
         of Bearer Bonds who have provided names and addresses for such
         purpose, or otherwise) with holders of Bearer Bonds, or (e) to
         otherwise effectuate provisions for the issuance of Bearer Bonds and
         their exchangeability with Registered Bonds (under no circumstances
         will this provision allow the Trustee or the Issuer to issue a second
         Class of "residual interests" as defined in the Code);

                 (9)      to modify, eliminate or add to the provisions of this
         Indenture to such extent as shall be necessary to effect the
         qualification of this Indenture under TIA or under any similar federal
         statute hereafter enacted, and to modify, eliminate or add to the
         provisions of this Indenture to such extent as shall be necessary or
         appropriate to conform to any provisions of the TIA, as the same may
         from time to time be amended; or

                 (10)     if a REMIC election or elections has or have been
         made or will be made in respect of the Trust Estate or such other
         assets specified in such election and securing the Bonds of a Series,
         to modify, eliminate or add to the provisions of this Indenture to
         such extent as shall be necessary (i) to maintain the qualification of
         such assets as a REMIC under the Code or (ii) to avoid or minimize the
         risk of the imposition of any tax on the Issuer, the Trust Estate or
         another Person under the Code that would be a claim against the
         Issuer, Trust Estate or such other Person, as the case may be, or
         (iii) to prevent a REMIC Loss, provided that (a) there shall have been
         delivered an Opinion of Counsel to the effect that such action





                                     -107-
<PAGE>   113
         is necessary to maintain such qualification or to avoid any such tax
         or minimize the risk of its imposition or to prevent such prohibited
         transaction, respectively, and (b) such supplemental indenture shall
         not have any of the effects described in paragraphs (1) through (6) of
         the proviso to Section 9.2 of this Indenture.

         SECTION 9.2      Supplemental Indentures with Consent of Bondholders.

         With the consent of the Holders of Bonds representing not less than
two-thirds of the Aggregate Current Principal Amount of all Outstanding Bonds
in case Outstanding Bonds of all Series are to be affected or with the consent
of the Holders of Bonds representing not less than two-thirds of the Aggregate
Current Principal Amount of the Outstanding Bonds of each Series to be affected
in case one or more, but less than all, of the Series of Outstanding Bonds are
to be affected, by Act of said Holders delivered to the Issuer and the Trustee,
the Issuer, when authorized by a Board Resolution, and the Trustee may enter
into an indenture or indentures supplemental hereto for the purpose of adding
any provisions to, or changing in any manner or eliminating any of the
provisions, of this Indenture relating to such Series or of modifying in any
manner the rights of the Holders of the Bonds of such Series under this
Indenture; provided, however, that no such supplemental indenture shall,
without the consent of the Holder of each Outstanding Bond affected thereby:

                 (1)      change the Stated Maturity of the final installment
         of the principal of, or any installment of interest on, any Bond or
         reduce the principal amount thereof, the Bond Interest Rate thereon or
         the Redemption Price with respect thereto, change Bond Redemption Date
         for any Series of Bonds, change any place of payment where, or the
         coin or currency in which, any Bond or any interest thereon is
         payable, or impair the right to institute suit for the enforcement of
         the payment of any installment of interest due on any Bond on or after
         the Stated Maturity thereof or for the enforcement of the payment of
         the entire remaining unpaid principal amount of any Bond on or after
         the Stated Maturity of the final installment of the principal thereof
         (or, in the case of redemption, on or after the applicable Redemption
         Date);

                 (2)      reduce the percentage of the Aggregate Current
         Principal Amount of the Outstanding Bonds of any Series, the consent
         of the Holders of which is required for any such supplemental
         indenture, or the consent of the Holders of which is required for any
         waiver of compliance with provisions of this Indenture or Defaults
         hereunder and their consequences provided for in this Indenture;

                 (3)      modify any of the provisions of this Section, Section
         5.13 or Section 5.17(b), except to increase any percentage specified
         therein or to provide that certain other provisions of this Indenture
         cannot be modified or waived without the consent of the Holder of each
         Outstanding Bond affected thereby;

                 (4)      modify or alter the provisions of the proviso to the
         definition of the term "Outstanding";





                                     -108-
<PAGE>   114
                 (5)      permit the creation of any lien ranking prior to or
         on a parity with the lien of this Indenture with respect to any part
         of a Trust Estate or terminate the lien of this Indenture on any
         property at any time subject hereto or deprive the Holder of any Bond
         of the security afforded by the lien of this Indenture; or

                 (6)      modify any of the provisions of this Indenture in
         such manner as to affect the calculation of the Debt Service
         Requirement for any Payment Date for any Series of Bonds (including
         the calculation of any of the individual components of such Debt
         Service Requirement) or to affect rights of the Holders of Bonds of
         any Series to the benefits of any provisions for the mandatory
         redemption of Bonds of such Series contained herein or in the related
         Series Supplement.

         Notwithstanding any of the foregoing, prior to the date on which the
Class Imputed Principal Balance of each Class of Senior Bonds of a Series has
been reduced to zero, no amendment, variation or modification shall be made to
Article V hereof in respect of any Series of Bonds without the consent of the
Holders representing not less than 100% of the Aggregate Current Principal
Amount of all Outstanding Senior Bonds of such Series.  The consent of the
Holders of any Junior Bonds of such Series shall not be required to be obtained
prior to making any amendment for such series to Article V above for so long as
any Senior Bond of such Series is Outstanding.  Upon reduction to zero of the
Class Imputed Principal Balance of each Class of Senior Bonds of a Series, no
amendment, variation or modification to Article V hereof shall be made in
respect of such Series of Bonds without the consent of the Holders representing
not less than 66 2/3% of the Aggregate Current Principal Amount of the Highest
Priority Junior Class of such Series.

         The Trustee may in its discretion determine whether or not any Bonds
of any particular Series would be affected by any supplemental indenture and
any such determination shall be conclusive upon the Holders of all Bonds,
whether theretofore or thereafter authenticated and delivered hereunder.  The
Trustee shall not be liable for any such determination made in good faith.

         It shall not be necessary for any Act of Bondholders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

         Promptly after the execution by the Issuer and the Trustee of any
supplemental indenture pursuant to this Section, the Issuer shall mail to the
Holders of the Bonds of each Series to which such supplemental indenture
relates a notice setting forth in general terms the substance of such
supplemental indenture. Any failure of the Issuer to mail such notice, or any
defect therein, shall not, however, in any way impair or affect the validity of
any such supplemental indenture.

         SECTION 9.3      Execution of Supplemental Indentures.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby
of the trusts created by this Indenture, the Trustee shall be entitled to
receive, and (subject to Section 6.1) shall be fully protected in relying





                                     -109-
<PAGE>   115
upon, an Opinion of Counsel stating that the execution of such supplemental
indenture is authorized or permitted by this Indenture.  In addition, in
executing any supplemental indenture which modifies an existing trust created
by this Indenture, the Trustee shall require, as a condition of such execution
or acceptance if a REMIC election or elections has or have been made or will be
made in respect of the Trust Estate or such other assets specified in such
election and securing such Series of Bonds, a Non-Disqualification Opinion.
The Trustee may, but shall not (except to the extent required in the case of a
supplemental indenture entered into under Section 9.1(8)) be obligated to,
enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

         SECTION 9.4      Effect of Supplemental Indentures.

         Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such supplemental
indenture shall form a part of this Indenture for all purposes; and every
Holder of Bonds of any Series to which such supplemental indenture relates
which have theretofore been or thereafter are authenticated and delivered
hereunder shall be bound thereby.

         SECTION 9.5      Conformity with Trust Indenture Act.

         Every supplemental indenture executed pursuant to this Article shall
conform to the requirements of TIA as then in effect so long as this Indenture
shall then be qualified under TIA.

         SECTION 9.6      Reference in Bonds to Supplemental Indentures.

         Bonds authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article which relates to the Series of
which such Bonds are a part may, and if required by the Issuer shall, bear a
notation in form approved by the Trustee as to any matter provided for in such
supplemental indenture.  If the Issuer shall so determine, new Bonds so
modified as to conform, in the opinion of Trustee and the Issuer, to any such
supplemental indenture which relates to the Series of which such Bonds are a
part may be prepared and executed by the Issuer and authenticated and delivered
by the Trustee in exchange for Outstanding Bonds of such Series.

         SECTION 9.7      Amendments to Governing Documents.

         Except as is otherwise provided in Section 3.8(c) the Trustee shall,
upon Issuer Request, consent to any proposed amendment to the Issuer's
governing documents, or an amendment to or waiver of any provision of any other
document relating to the Issuer's governing documents, such consent to be given
without the necessity of obtaining the consent of the Holders of any Bonds upon
receipt by the Trustee of:

                 (1)      an Officer's Certificate, to which such proposed
         amendment or waiver shall be attached, stating that such attached copy
         is a true copy of the proposed amendment or





                                     -110-
<PAGE>   116
         waiver and that all conditions precedent to such consent specified in
         this Section 9.7 have been satisfied; and

                 (2)      written confirmation from each of the rating agencies
         that rated any Series of the Issuer's Bonds that the implementation of
         the proposed amendment or waiver will not adversely affect their
         respective ratings of any Series of Bonds.

         Notwithstanding the foregoing, the Trustee may decline to consent to a
proposed waiver or amendment that adversely affects its own rights, duties or
immunities under the Indenture or otherwise.

         Nothing in this Section 9.7 shall be construed to require that any
Person obtain the consent of the Trustee to any amendment or waiver or any
provision of any document where the making of such amendment or the giving of
such waiver without obtaining the consent of the Trustee is not prohibited by
the Indenture or by the terms of the document that is the subject of the
proposed amendment or waiver.





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                                   ARTICLE X

                              REDEMPTION OF BONDS

         SECTION 10.1     Redemption.

         All the Bonds of a Series may be redeemed in whole, but not in part,
on any Payment Date for such Series in accordance with and subject to the
provisions relating to such redemption contained in the related Series
Supplement.  If the Issuer shall elect to redeem the Bonds of a Series pursuant
to this Section 10.1 and the related Series Supplement, it shall furnish notice
of such election to the Trustee not later than thirty (30) days prior to the
Payment Date selected for such redemption, whereupon all such Bonds shall be
due and payable on such Payment Date upon the furnishing of a notice pursuant
to Section 10.2 to each Holder of such Bonds.

         SECTION 10.2     Form of Redemption Notice.

         Unless otherwise specified in the related Series Supplement notices of
redemptions of Bonds shall be given by the Trustee in the name and at the
expense of the Issuer and shall be mailed, or caused to be mailed, no later
than five days prior to such Payment Date on which such Bonds are to be
redeemed to the Persons who were Holders of such Bonds at the close of business
on the tenth Business Day prior to such Payment Date notwithstanding the Record
Date otherwise applicable.

         Unless otherwise provided in the related Series Supplement, no prior
notice of redemption at the request of a Bondholder or redemption of Book Entry
Bonds shall be required.

                 All notices of redemption shall state:

                 (1)      the Payment Date on which such redemption will take
                          place,

                 (2)      the Redemption Price at which the Bonds of such
                          Series will be redeemed,

                 (3)      the fact of payment in full on such Bonds, the place
         where such Bonds are to be surrendered for payment of the Redemption
         Price (which shall be the office or agency of the Issuer to be
         maintained as provided in Section 3.2), and that no interest shall
         accrue on such Bond for any period after the date fixed for
         redemption.

Failure to give notice of redemption, or any defect therein, to any Holder of
any Bond selected for redemption shall not impair or affect the validity of the
redemption of any other Bond.

         SECTION 10.3     Bonds Payable on Payment Date.

         Notice of redemption having been given as provided in Section 10.2,
the Bonds or portions thereof so to be redeemed shall, on the applicable
Payment Date, become due and payable at the





                                     -112-
<PAGE>   118
Redemption Price and (unless the Issuer shall default in the payment of the
Redemption Price) no interest shall accrue on such Payment Date.

         SECTION 10.4     Right of Redemption by Holder.

                 (a)      Unless the Bonds of a Series have been declared due
         and payable prior to their Stated Maturity by reason of an Event of
         Default, a Holder may request the redemption of Bonds of one or more
         Classes of such Series if the related Series Supplement provides that
         such Class or Classes shall be subject to redemption as so provided in
         this Section 10.4.  A Bondholder may request redemption by delivering
         the following to the Trustee on or before the Tender Date:   (i) a
         written request for redemption in form satisfactory to the Trustee
         (such as the form appearing on the back of each Bond), by the
         Bondholder or the Bondholder's legal representative, with appropriate
         evidence of authority; (ii) in the case of Definitive Bonds, the
         certificate or certificates representing the Bond or Bonds for which
         redemption is being requested, and (iii) in the case of a request on
         behalf of a deceased Holder, appropriate evidence of death and any tax
         waivers requested by the Trustee.  With respect to each Class of Bonds
         subject to redemption at the request of Holders, on each Payment Date
         for such Series, the Issuer shall redeem Bonds with respect to which
         redemption has been properly requested in the order of priority
         described in paragraph (b) of this Section 10.4 and subject to the
         limitations that (1) except as set forth in such subsection (b), the
         Issuer shall not, on any one Payment Date, redeem from any personal
         representative, surviving joint tenant or surviving tenant by the
         entirety of a deceased Holder more than one hundred Individual Bonds
         of such Series or redeem from any other Holder more than ten
         Individual Bonds of such Series, unless all other Holders of Bonds for
         which redemption has been properly requested for such Payment Date
         have had their Bonds redeemed up to such limitations, and (2) with
         respect to each Class of a Series subject to redemption pursuant to
         this Section 10.4, the Issuer shall, on each Redemption Date, only
         make redemptions to the extent of the aggregate amount of principal
         payable on the Bonds of such Class on such Payment Date, rounded down
         to the nearest Individual Bond (the "Class Redemption Amount").  Bonds
         which have been accepted for Redemption shall become due and payable
         on the applicable Redemption Date and shall cease to bear interest as
         of the end of the Interest Accrual Period for such Redemption Date.
         Upon presentation and surrender of such Bonds for redemption on or
         after the Redemption Date therefor, such Bonds shall be redeemed by
         the Issuer at the Redemption Price, together with accrued interest.
         Installments of interest due on or prior to a Redemption Date shall
         continue to be payable to the Holders of such Bonds as of the
         applicable Record Date according to their terms and the provisions of
         Section 2.9.

                 (b)      Subject to the limitations provided in subsection (a)
         of this Section 10.4, with respect to each Redemption Date and with
         respect to each Class, requests for redemption of Deceased Holder
         Bonds shall be accepted in the order of receipt of such requests by
         the Trustee to the extent permitted by the one hundred Individual Bond
         limitation referred to in Section 10.4(a); requests for redemption of
         Bonds other than Deceased Holder Bonds shall be accepted in the order
         of receipt of such requests by the Trustee to the extent permitted by





                                     -113-
<PAGE>   119
         the ten Individual Bond limitation referred to in Section 10.4(a),
         after all requests for redemption of Deceased Holder Bonds of the same
         Class theretofore submitted have been accepted within the one hundred
         Individual Bond limitation.  With respect to each Redemption Date, the
         Issuer shall accept requests for redemption of Deceased Holder Bonds
         in excess of the one hundred Individual Bond limitation, but only to
         the extent of the Class Redemption Amount for such Class for such
         Series after all requests for redemption in this subsection (b) with
         respect to such Redemption Date within the one hundred Individual Bond
         and ten Individual Bond limitations set forth above have been
         accepted.  With respect to each Redemption Date, the Issuer shall
         accept requests for redemption of Bonds other than Deceased Holder
         Bonds in excess of the ten Individual Bond limitation, but only to the
         extent of the Class Redemption Amount for such Class for such Series
         after all other requests for redemption in this subsection (b) with
         respect to such Redemption Date within the one hundred Individual Bond
         and ten Individual Bond limitations set forth above have been
         accepted.  With respect to each Redemption Date, the Issuer shall
         accept requests for redemption of Bonds other than Deceased Holder
         Bonds in excess of the ten Individual Bond limitation, but only to the
         extent of the Class Redemption Amount for such Class for such Series
         after all other requests for redemption in this subsection (b) with
         respect to such Redemption Date have been accepted.  Subject to the
         foregoing provisions, requests for redemption shall be accepted in the
         order that they were received by the Trustee.

                 (c)      In order to obtain redemption, the Holder or the
         personal representative, surviving joint tenant or surviving tenant by
         the entirety of a deceased Holder must deliver to the Trustee on or
         before the Tender Date preceding the Redemption Date:  (i) a written
         request for redemption in form satisfactory to the Trustee (such as
         the form appearing on the certificate representing the Bonds), signed
         by the Holder or the Holder's legal representative (with appropriate
         evidence of authority), (ii) the certificates representing the Bond or
         Bonds for which redemption is being requested, and (iii) in the case
         of Deceased Holder Bonds, appropriate evidence of death and any tax
         waivers required by the Trustee.  No particular forms of request for
         redemption or authority to request redemption are necessary (but the
         form set forth on the form of Bond in Section 2.2 shall be
         sufficient). Requests for redemption of Bonds received by the Trustee
         after the Tender Date preceding the Redemption Date, and requests for
         redemption not accepted in respect of such Redemption Date, whether on
         behalf of a deceased Holder or otherwise, will be treated as a request
         for redemption on the next succeeding Redemption Date, and the Bonds
         submitted will be held by the Trustee, until the request is accepted
         or withdrawn, except that the Trustee, in its discretion, may cancel
         the certificates representing any such Bonds provided that it shall
         maintain a record of the Bonds so cancelled and such Bonds shall
         continue to be deemed Outstanding for all purposes.  Within the first
         five Business Days of any month, the Trustee shall notify each Holder
         whose Bonds have been accepted for redemption in whole or in part on
         the Redemption Date in such month.  Only whole Individual Bonds may be
         redeemed.

                 (d)      For purposes of this Section, the death of a tenant
         by the entirety, joint tenant or tenant in common will be deemed the
         death of a Holder, and the entire principal amount of the Bond so held
         will be deemed to be a Deceased Holder Bond.  The death of a person





                                     -114-
<PAGE>   120
         who, during his lifetime, was entitled to substantially all of the
         beneficial interests of ownership of a Bond will be deemed the death
         of the Holder, regardless of the registered Holder, if such beneficial
         interest can be established to the satisfaction of the Trustee.  Such
         beneficial interest shall be deemed to exist in typical cases of
         street name of nominee ownership, ownership under the Uniform Gifts to
         Minors Act, community property or other joint ownership arrangement
         between a husband and wife, and trust and certain other arrangements
         where a person has substantially all of the beneficial ownership
         interests in the Bonds during his or her lifetime.  Beneficial
         interest shall include the power to sell, transfer or otherwise
         dispose of a Bond and the right to receive the proceeds therefrom, as
         well as interest and principal payable with respect thereto.

                 (e)      To the extent that the Class Redemption Amount as
         defined under Section 10.4(a) for a Principal Payment Date exceeds the
         aggregate amount of Bonds of a Class to be redeemed on such Principal
         Payment Date at the option of the Holders of such Class, Bonds of such
         Class shall be mandatorily redeemed by the Issuer at the price
         specified in the related Series Supplement.  Unless otherwise provided
         in the related Series Supplement, if less than all of the Bonds of any
         such Class are to be redeemed, the particular Bonds to be redeemed
         shall be selected by the Trustee from the Outstanding Bonds of such
         Series not previously called or accepted for redemption, not more than
         30 days prior to the applicable Principal Payment Date.  The Trustee
         shall select the Bonds to be redeemed by random lot.  Only whole
         Individual Bonds may be redeemed.

                 The Trustee shall promptly notify the Issuer in writing of the
         Individual Bonds selected for redemption pursuant to this Section
         10.4(e) and, in the case of any Bond selected for partial redemption,
         the principal amount thereof to be redeemed.

                 (f)      Beneficial Owners of Book Entry Bonds may tender
         their interest in Bonds for redemption on any Principal Payment Date
         subject to the limitations established in this Section 10.4.  If, and
         to the extent provided in the related Series Supplement, the Clearing
         Agency will receive requests for redemption and requests for
         withdrawal, determine the order of receipt of request for redemption,
         select Bonds to be mandatorily redeemed, provide notices of redemption
         and/or make payments of the redemption price and accrued interest, if
         any, in accordance with the terms and provisions of the related Series
         Supplement and the rules and procedures of the Clearing Agency.

                 (g)      Each of the terms and provisions of this Section 10.4
         may be modified, with respect to any Series, by the related Series
         Supplement.

         SECTION 10.5     Withdrawal of Requests.

         Any requests for redemption pursuant to Section 10.4 may be withdrawn
by the persons making the same upon the delivery of a written request for such
withdrawal received by the Trustee not later than the Tender Date for a given
Redemption Date on which such Bond would otherwise be redeemable pursuant to
Section 10.4. If not so withdrawn, the redemption request will be irre-





                                     -115-
<PAGE>   121
vocable with respect to the selection of Bonds for redemption on the Redemption
Date within such month.  In the event a request for redemption has been
withdrawn as provided herein, the Trustee shall return the certificate
representing the Bond or Bonds in respect of which the redemption request has
been withdrawn or, in the case of Bonds the certificates of which were
cancelled by the Trustee pursuant to Section 10.4(c), the Issuer shall execute,
and the Trustee shall authenticate and deliver, new certificates representing
the Bonds in respect of which the redemption request has been withdrawn, such
new Bonds to be of the same date and tenor as the Bonds cancelled under Section
10.4(c) in the amount which remains outstanding.

         SECTION 10.6     Redemption Register.

         The Trustee shall maintain at its Corporate Trust Office a register in
which it shall record, in the order of receipt, all requests for redemption
received by the Trustee under Section 10.4.  The Trustee may establish such
procedures as it may deem fair and equitable in order to determine the order of
receipt of requests for redemption received by the Trustee on a single day, and
any such determination shall be conclusive.  In establishing procedures for
determining the order of receipt of request for redemption, the Trustee may
designate from time to time any particular person, department or office as the
designated recipient of such requests and provide that, after Holders have been
notified in writing of such designation, no request for redemption will be
deemed received until received by the person, department or office so
designated.  Unless withdrawn as provided in Section 10.5, all such requests
shall remain in effect until the Bonds which are the subject of such request
have been redeemed.

         SECTION 10.7     Reserved.





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                                   ARTICLE XI

                                 MISCELLANEOUS

         SECTION 11.1     Compliance Certificates and Opinions.

         Upon any application or request by the Issuer to the Trustee to take
any action under any provision of this Indenture, the Issuer shall furnish to
the Trustee an Officers' Certificate stating that all conditions precedent, if
any, provided for in this Indenture relating to the proposed action have been
complied with and an Opinion of Counsel stating that in the opinion of such
counsel all such conditions precedent, if any, have been complied with, except
that in the case of any such application or request as to which the furnishing
of such documents is specifically required by any provision of this Indenture
relating to such particular application or request, no additional certificate
or opinion need be furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture, including one furnished
pursuant to specific requirements of this Indenture relating to a particular
application or request (other than certificates provided pursuant to TIA
Section  314(a)(4)) shall include and shall be deemed to include (regardless of
whether specifically stated therein) the following:

                 (1)      a statement that each individual signing such
         certificate or opinion has read such covenant or condition and the
         definitions herein relating thereto;

                 (2)      a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;

                 (3)      a statement that, in the opinion of each such
         individual, he has made such examination or investigation as is
         necessary to enable him to express an informed opinion as to whether
         or not such covenant or condition has been complied with; and

                 (4)      a statement as to whether, in the opinion of each
         such individual, such condition or covenant has been complied with.

         SECTION 11.2     Form of Documents Delivered to Trustee.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and one
or more other such Persons as to other matters, and any such Person may certify
or give an opinion as to such matters in one or several documents.





                                     -117-
<PAGE>   123
         Any certificate or opinion of an officer of the Issuer may be based,
insofar as it relates to legal matters, upon a certificate or opinion of, or
representations by counsel, unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are
erroneous. Any such certificate or Opinion of Counsel may be based, insofar as
it relates to factual matters, upon a certificate or opinion of, or
representations by, an officer or officers of the Issuer, stating that the
information with respect to such factual matters is in the possession of the
Issuer, unless such officer or counsel knows, or in the exercise of reasonable
care should know, that the certificate or opinion or representations with
respect to such matters are erroneous.  Any opinion of counsel may be based on
the written opinion of other counsel, in which event such Opinion of Counsel
shall be accompanied by a copy of such other counsel's opinion and shall
include a statement to the effect that such counsel believes that such counsel
and the Trustee may reasonably rely upon the opinion of such other counsel.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

         Wherever in this Indenture, in connection with any application or
certificate or report to the Trustee, it is provided that the Issuer shall
deliver any document as a condition of the granting of such application, or as
evidence of the Issuer's compliance with any term hereof, it is intended that
the truth and accuracy, at the time of the granting of such application or at
the effective date of such certificate or report (as the case may be), of the
facts and opinions stated in such document shall in such case be conditions
precedent to the right of the Issuer to have such application granted or to the
sufficiency of such certificate or report.  The foregoing shall not, however,
be construed to affect the Trustee's right to rely upon the truth and accuracy
of any statement or opinion contained in any such document as provided in
Section 6.1(b)(2).

         Whenever in this Indenture it is provided that the absence of the
occurrence and continuation of a Default or Event of Default is a condition
precedent to the taking of any action by the Trustee at the request or
direction of the Issuer, then notwithstanding that the satisfaction of such
condition is a condition precedent to the Issuer's right to make such request
or direction, the Trustee shall be protected in acting in accordance with such
request or direction if it does not have knowledge of the occurrence and
continuation of such Default or Event of Default as provided in Section 6.1(d).

         SECTION 11.3     Acts of Bondholders.

                 (a)      Any request, demand, authorization, direction,
         notice, consent, waiver or other action provided by this Indenture to
         be given or taken by Bondholders may be embodied in and evidenced by
         one or more instruments of substantially similar tenor signed by such
         Bondholders in person or by agent duly appointed in writing; and,
         except as herein otherwise expressly provided, such action shall
         become effective when such instrument or instruments are delivered to
         the Trustee, and, where it is hereby expressly required, to the
         Issuer.  Such instrument or instruments (and the action embodied
         therein and evidenced thereby) are





                                     -118-
<PAGE>   124
         herein sometimes referred to as the "Act" of the Bondholders signing
         such instrument or instruments.  Proof of execution of any such
         instrument or of a writing appointing any such agent shall be
         sufficient for any purpose of this Indenture and (subject to Section
         6.1) conclusive in favor of the Trustee and the Issuer, if made in the
         manner provided in this Section.

                 (b)      The fact and date of the execution by any Person of
         any such instrument or writing may be proved by the affidavit of a
         witness of such execution or by the certificate of any notary public
         or other officer authorized by law to take acknowledgments of deeds,
         certifying that the individual signing such instrument or writing
         acknowledged to him the execution thereof.  Whenever such execution is
         by an officer of a corporation or a member of a partnership on behalf
         of such corporation or partnership, such certificate or affidavit
         shall also constitute sufficient proof of his authority.

                 (c)      The ownership of Bonds shall be proved by the Bond
         Register.

                 (d)      Any request, demand, authorization, direction,
         notice, consent, waiver or other action by the Holder of any Bonds
         shall bind the Holder of every Bond issued upon the registration of
         transfer thereof or in exchange therefor or in lieu thereof, in
         respect of anything done, omitted or suffered to be done by the
         Trustee or the Issuer in reliance thereon, whether or not notation of
         such action is made upon such Bonds.

                 (e)      The Voting Record Date specified in this Indenture,
         or in the related Series Supplement for any Series of Bonds, shall be
         applicable with respect to all Acts of Bondholders under this Section
         11.3.

         SECTION 11.4     Notices, etc. to Trustee and Issuer.

         Any request, demand, authorization, direction, notice, consent, waiver
or Act of Bondholders or other documents provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with

                 (1)      the Trustee by any Bondholder or by the Issuer shall
         be sufficient for every purpose hereunder if made, given, furnished or
         filed in writing to or with and received by the Trustee at its
         Corporate Trust Office, or

                 (2)      the Issuer by the Trustee or by any Bondholder shall
         be sufficient for every purpose hereunder (except as provided in
         Section 5.1(A)(3) and (4)) if in writing and mailed, first-class
         postage-prepaid, to the Issuer addressed to it at 2711 N. Haskell,
         Suite 1000, Dallas, Texas 75204 or at any other address previously
         furnished in writing to the Trustee by the Issuer.





                                     -119-
<PAGE>   125
         SECTION 11.5     Notices and Reports to Bondholders; Waiver of Notices.

         Where this Indenture provides for notice to Bondholders of any event
or the mailing of any report to Bondholders, such notice or report shall be
sufficiently given (unless otherwise herein expressly provided) if mailed,
first-class postage prepaid, to each Bondholder affected by such event or to
whom such report is required to be mailed, at the address of such Bondholder as
it appears on the Bond Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice or the
mailing of such report.  In any case where a notice or report to Bondholders is
mailed in the manner provided above, neither the failure to mail such notice or
report, nor any defect in any notice or report so mailed, to any particular
Bondholder shall affect the sufficiency of such notice or report with respect
to other Bondholders, and any notice or report which is mailed in the manner
herein provided shall be conclusively presumed to have been duly given or
provided.

         Where this Indenture provides for notice in any manner, such notice
may be waived in writing by any Person entitled to receive such notice, either
before or after the event, and such waiver shall be the equivalent of such
notice.  Waivers of notice by Bondholders shall be filed with the Trustee, but
such filing shall not be a condition precedent to the validity of any action
taken in reliance upon such waiver.

         In case, by reason of the suspension of regular mail service as a
result of a strike, work stoppage or similar activity, it shall be impractical
to mail notice of any event to Bondholders when such notice is required to be
given pursuant to any provision of this Indenture, then any manner of giving
such notice as shall be satisfactory to the Trustee shall be deemed to be a
sufficient giving of such notice.

         SECTION 11.6     Rules by Trustee and Agents.

         The Trustee may make reasonable rules for any meeting of Bondholders.
Any Agent may make reasonable rules and set reasonable requirements for its
functions.

         SECTION 11.7     Conflict with Trust Indenture Act.

         If any provision hereof limits, qualifies or conflicts with the duties
 imposed by operation of TIA Section 318(c), the imposed duties under the TIA
 shall control.

         SECTION 11.8     Effect of Headings and Table of Contents.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.





                                     -120-
<PAGE>   126
         SECTION 11.9     Successors and Assigns.

         All covenants and agreements in this Indenture by the Issuer shall
bind its successors and assigns, whether so expressed or not.

         SECTION 11.10    Severability.

         In case any provision in this Indenture or in the Bonds shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

         SECTION 11.11    Benefits of Indenture.

         Nothing in this Indenture or in the Bonds, expressed or implied, shall
give to any Person, other than the parties hereto and their successors
hereunder, any separate trustee or co-trustee appointed under Section 6.14, any
alternate trustee appointed under Section 6.16 and the Bondholders, any benefit
or any legal or equitable right, remedy or claim under this Indenture.

         SECTION 11.12    Legal Holidays.

         In any case where the date of any Payment Date, Redemption Date,
Special Payment Date, or any other date on which principal of or interest on
any Bond or Overdue Bond is proposed to be paid shall not be a Business Day,
then (notwithstanding any other provision of the Bonds or this Indenture)
payment need not be made on such date, but may be made on the next succeeding
Business Day with the same force and effect as if made on the nominal date of
any such Payment Date, Redemption Date, Special Payment Date, or other date for
the payment of principal of or interest on any Bond or Overdue Bond, as the
case may be, and no interest shall accrue for the period from and after any
such nominal date, provided such payment is made in full on such next
succeeding Business Day.

         SECTION 11.13    GOVERNING LAW.

         IN VIEW OF THE FACT THAT BONDHOLDERS ARE EXPECTED TO RESIDE IN MANY
STATES AND OUTSIDE THE UNITED STATES AND THE DESIRE TO ESTABLISH WITH CERTAINTY
THAT THIS INDENTURE WILL BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN
ACCORDANCE WITH THE LAW OF A STATE HAVING A WELL-DEVELOPED BODY OF COMMERCIAL
AND FINANCIAL LAW RELEVANT TO TRANSACTIONS OF THE TYPE CONTEMPLATED HEREIN,
THIS INDENTURE, EACH SERIES SUPPLEMENT AND EACH BOND SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO
AGREEMENTS MADE AND TO BE PERFORMED THEREIN.





                                     -121-
<PAGE>   127
                 SECTION 11.14    Counterparts.

         This instrument may be executed in any number of counterparts, each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument.

         SECTION 11.15    Recording of Indenture.

         This Indenture is subject to recording in any appropriate public
recording offices, such recording to be effected by the Issuer and at its
expense in compliance with any Opinion of Counsel delivered pursuant to Section
2.12(c) or 3.6.

         SECTION 11.16    Corporate Obligation.

         No recourse may be taken, directly or indirectly, against any
incorporator, subscriber to the capital stock, stockholder, officer or director
of the Issuer or the Trustee or of any predecessor or successor of the Issuer
or the Trustee with respect to the Issuer's obligations with respect to the
Bonds or the obligations of the Issuer or the Trustee under this Indenture or
any certificate or other writing delivered in connection herewith or therewith.

         SECTION 11.17    Inspection.

         The Issuer agrees that, on reasonable prior notice, it will permit any
representative of the Trustee, during the Issuer's normal business hours, to
examine all of the books of account, records, reports and other papers of the
Issuer, to make copies and extracts therefrom, to cause such books to be
audited by Independent Accountants selected by the Trustee, and to discuss its
affairs, finances and accounts with its officers, employees and Independent
Accountants (and by this provision the Issuer hereby authorizes its Accountants
to discuss with such representatives such affairs, finances and accounts), all
at such reasonable times and as often as may be reasonably requested.  Any
expense incident to the exercise by the Trustee of any right under this Section
11.17 shall be borne by the Issuer.

         SECTION 11.18    Usury.

         The amount of interest payable or paid on any Bond under the terms of
this Indenture shall be limited to an amount which shall not exceed the maximum
nonusurious rate of interest allowed by the applicable laws of the United
States or the State of New York (whichever shall permit the higher rate), which
could lawfully be contracted for, charged or received (the "Highest Lawful
Rate"). In the event any payment of interest on any Bond exceeds the Highest
Lawful Rate, the Issuer stipulates that such excess amount will be deemed to
have been paid as a result of an error on the part of both the Trustee, acting
on behalf of the Holder of such Bond, and the Issuer, and the Holder receiving
such excess payment shall promptly, upon discovery of such error or upon notice
thereof from the Issuer or the Trustee, refund the amount of such excess or, at
the option of the Trustee, apply the excess to the payment of principal of such
Bond, if any, remaining unpaid.  In





                                     -122-
<PAGE>   128
addition, all sums paid or agreed to be paid to the Trustee for the benefit of
Holders of Bonds for the use, forbearance or detention of money shall, to the
extent permitted by applicable law, be amortized, prorated, allocated and
spread throughout the full term of such Bonds.

         SECTION 11.19    REMIC Status.

         The provisions of this Indenture shall be construed so as to carry out
the intention of the parties that the Trust Estate and any other assets
specified in such REMIC election or elections and securing a Series of Bonds,
be treated as a REMIC, if a REMIC election or elections has or have been made
or will be made in respect of the Trust Estate or such other assets, at all
times so long as any Bond of such Series is Outstanding (or would be treated as
Outstanding for purposes of a Non-Disqualification Opinion).

         SECTION 11.20    Reserved.

         SECTION 11.21    Appointment of Tax Matters Partner.

         If a REMIC election or elections has or have been made or will be made
in respect of the Trust Fund or any other assets specified in such REMIC
election or elections which assets secure the Bonds of a Series, the tax
matters partner for each such REMIC and for all purposes of the Code shall be
the Person designated as such in the related Series Supplement.





                                     -123-
<PAGE>   129
         IN WITNESS WHEREOF, the Issuer and the Trustee have caused this
Indenture to be duly executed by their respective officers thereunto duly
authorized as of the day and year first above written.

                             Capstead Securities Corporation IV



                             By: /s/ WADE WALKER 
                                -----------------------------------
                                 Wade Walker, Vice President

STATE OF TEXAS            )
                          :  ss.:
COUNTY OF DALLAS          )

         On the 29th day of September, 1998, before me personally came Wade
Walker to me known, who, being by me duly sworn, did depose and say that he
resides in Dallas, Texas; that he is a Vice President of Capstead Securities
Corporation IV, the corporation described in and that executed the above
instrument; and that he signed his name thereto by order of the Board of
Directors of said Corporation.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.

                                /S/ ROBIN DEVELLIS        
                                -----------------------------------     
                                Notary Public





<PAGE>   130
                                Chase Bank of Texas, National Association,
                                as Trustee


                                By: /s/ PATTY LOGAN
                                   --------------------------------
                                Name:   Patty Logan
                                     ------------------------------     
                                Title:  Vice President
                                      -----------------------------


STATE OF TEXAS            )
                          :  ss.:
COUNTY OF DALLAS          )

         On the 29th day of September, 1998 before me personally came Patty
Logan to me known, who, being by me duly sworn, did depose and say that he/she 
resides in Houston, Tx.; that he/she is a Vice President of Chase Bank of
Texas, National Association, the national banking association described in and
that executed the above instrument as Trustee; and that he/she signed his/her 
name thereto by order of the Board of Directors of said national banking 
association.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my
official seal the day and year in this certificate first above written.

                                /s/ Robin DeVellis
                                -----------------------------------     
                                Notary Public






<PAGE>   1
                                                                    EXHIBIT 4.2 
                                                                      EXECUTION









                       CAPSTEAD SECURITIES CORPORATION IV,

                                     Issuer

                                       and


                   CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,

                                     Trustee

                      ------------------------------------

                            Series 1998-3 Supplement

                          Dated as of September 1, 1998


                                       to


                                    INDENTURE

                         Dated as of September 1, 1998

                      ------------------------------------

                                  $345,831,963
                       COLLATERALIZED MORTGAGE OBLIGATIONS

                                  Series 1998-3






           ===========================================================



<PAGE>   2




                                TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                         PAGE
                                                                                                         ----
<S>                                                                                                             <C>
PRELIMINARY STATEMENT.............................................................................................1


GRANTING CLAUSES..................................................................................................1

Section (1)        Certain Defined Terms..........................................................................2
Section (2)        Designation....................................................................................8
Section (3)        Dating of Series 1998-3 Bonds; Calculation of Interest Accrued.................................8
Section (4)        Transfer of ERISA Restricted Bonds.............................................................8
Section (5)        Aggregate Principal Amount; Classes............................................................8
Section (6)        Denominations of Series 1998-3 Bonds...........................................................9
Section (7)        Authentication of Series 1998-3 Bonds..........................................................9
Section (8)        Payment Dates.................................................................................10
Section (9)        Places for Payment of Principal of Series 1998-3 Bonds; Payments on Book Entry Bonds..........10
Section (10)       Payment on the Bonds Before Acceleration; Reports to Bondholders..............................10
Section (11)       Payment of the Bonds on and after Acceleration................................................13
Section (12)       Reserve Fund..................................................................................13
Section (13)       Transfer of Certificates to Trustee; Deposits to Collection Account; Pledged Accounts.........14
Section (14)       Requirements for Issuance of Series 1998-3 Bonds..............................................14
Section (15)       Calculations with Respect to Underlying Mortgage Loans........................................14
Section (16)       Redemption....................................................................................15
Section (17)       Actions by Trustee as Holder of Conventional Certificates.....................................15
Section (18)       REMIC Administration..........................................................................16
Section (19)       Form of Series 1998-3 Bonds; Matters Relating to Book Entry Bonds.............................19
Section (20)       The Administrators and the Trustee............................................................20
Section (21)       Supplements, Modifications and Ratifications of Indenture.....................................20
Section (22)       Certain Matters Regarding Registration of Transfer and Exchange of Bonds......................21
Section (23)       Bond Manager on Behalf or Issuer..............................................................21
Section (24)       Investment of Funds in the Collection Account; Inapplicability of Section 6.10(f).............22
Section (25)       Counterparts..................................................................................22
Section (26)       Governing Law.................................................................................22
Section (27)       Notices.......................................................................................22
</TABLE>



                                       i

<PAGE>   3



EXHIBITS
- --------

Exhibit A-1   -    Form of Class A Bond

Exhibit A-2   -    Form of Class AX Bond

Exhibit A-3   -    Form of Class R Bond

Exhibit B     -    Form of Transferee Affidavit and Agreement (Residual Bonds)

Exhibit C     -    Form of Transferor Certificate (Residual Bonds)

                                       ii

<PAGE>   4



         Series 1998-3 Supplement dated as of September 1, 1998, between
CAPSTEAD SECURITIES CORPORATION IV, a Delaware corporation (together with its
successors and assigns as provided in the Indenture referred to below, the
"Issuer") and CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, a national banking
association (together with its successors in trust thereunder as provided in the
Indenture, the "Trustee"), as trustee under an Indenture, as amended and
restated as of September 1, 1998 (such Indenture, as thereafter amended and
supplemented, is referred to herein as the "Indenture").

                              PRELIMINARY STATEMENT

         Section 2.3 of the Indenture provides, among other things, that the
Issuer, when authorized by its Board of Directors, and the Trustee may enter
into an indenture supplemental to the Indenture for the purpose of authorizing a
Series of Bonds and to specify certain terms of such Series of Bonds. The Board
of Directors of the Issuer has duly authorized the creation of a Series of Bonds
in an aggregate principal amount of $345,831,963 to be known as its
Collateralized Mortgage Obligations, Series 1998-3 (the "Series 1998-3 Bonds",
with references herein to "Bonds" being references solely to the Series 1998-3
Bonds)), and the Issuer and the Trustee are executing and delivering this Series
1998-3 Supplement in order to provide for the Series 1998-3 Bonds. All terms
used in this Series 1998-3 Supplement that are defined in the Indenture, either
directly or by reference therein, have the meanings assigned to them therein as
supplemented by Section 1 hereof, if applicable, except to the extent the
context clearly requires otherwise. Any such defined term that is defined in the
Indenture as relating to a particular Series rather than to all Bonds generally
shall, when used in this Series 1998-3 Supplement, relate to the Series 1998-3
Bonds, whether or not expressly so stated herein.

                                GRANTING CLAUSES

         The Issuer hereby Grants to the Trustee, for the exclusive benefit of
the Holders of the Series 1998-3 Bonds, all of the Issuer's right, title and
interest in and to (a) the mortgage pass-through certificates listed in Schedule
A to this Series 1998-3 Supplement, which the Issuer has caused to be delivered
to the Trustee herewith and which Conventional Certificates evidence interests
in pools of mortgage loans on one- to four-family residential properties and
individual condominium units, and all Distributions with respect thereto payable
at any time on or after the first Distribution Date, (b) each Pledged Account
for the Series 1998-3 Bonds, including the Reserve Fund and all income from the
investment of funds in each such Pledged Account, (c) the Initial Deposit and
(c) all proceeds of the conversion, voluntary or involuntary, of any of the
foregoing into cash or other liquid property. Such Grants are made, however, in
trust, to secure the Series 1998-3 Bonds, equally and ratably, without prejudice
or distinction between any Series 1998-3 Bond and any other Series 1998-3 Bond
by reason of difference in time of issuance or otherwise, and to secure (i) the
payment of all amounts due on the Series 1998-3 Bonds as such amounts become due
in accordance with their terms, (ii) the payment of all other sums payable under
the Indenture or this Series 1998-3 Supplement with respect to the Series 1998-3
Bonds, and (iii) compliance with the provisions of the Indenture and this Series
1998-3 Supplement with respect to the Series 1998-3 Bonds, all as provided in
the Indenture and this Series 1998-3 Supplement.



<PAGE>   5

         The Trustee acknowledges such Grants, accepts the trusts hereunder in
accordance with the provisions hereof and of the Indenture, and agrees to
perform the duties herein or therein required in accordance with Article VI of
the Indenture.

         SECTION (1)  CERTAIN DEFINED TERMS.

         Sections 1.1 and 2.3 of the Indenture provide that the meaning of
certain defined terms used in the Indenture shall, when applied to the Bonds of
a particular Series, be as defined in said Section 1.1 but with such additional
provisions as are specified in the related Series Supplement. With respect to
the Series 1998-3 Bonds, the following provisions shall govern the defined terms
set forth below:

         "Accrual Date": With respect to any Class of Bonds, September 29, 1998.

         "Accrued Bond Interest": As to each Class of Bonds and any Payment
Date, the interest accrued during the related Interest Accrual Period at the
applicable Bond Interest Rate on the Class Current Principal Balance (or in the
case of the Class AX Bonds, the Class Notional Balance) of such Class
immediately prior to such Payment Date, calculated on the basis of the actual
number of days in the related Interest Accrual Period and a 360-day year, less
any Net Interest Shortfall allocated thereto on such date. No Accrued Bond
Interest will be payable with respect to any Class of Bonds after the Payment
Date on which the Class Current Principal Balance or Class Notional Balance of
such Class has been reduced to zero.

         "Administrator": With respect to the each series of Conventional
Certificates, as defined in the related Pooling and Administration Agreement.

         "Available Funds": As to any Payment Date, the aggregate amount of
distributions received on or with respect to the Conventional Certificates on
the Certificate Distribution Date immediately preceding such Payment Date.

         "Basis Risk Shortfall": As to any Payment Date, the sum of (i) the
excess of (x) interest accrued on the Class A Bonds for the preceding Interest
Accrual Period at a per annum interest rate equal to the lesser of 8.50% and
LIBOR plus the Margin for such date, over (y) interest accrued on the Class A
Bonds for the preceding Interest Accrual Period at the Net WAC for such date and
(ii) the amount of Basis Risk Shortfalls from prior Payment Dates remaining
unpaid on the Class A Bonds.

         "Bond Interest Rate": With respect to the Class A Bonds, the Class A
Bond Interest Rate. With respect to the Class AX Bonds, the Class AX Bond
Interest Rate. With respect to the Class R Bonds, the same as the Class A Bond
Interest Rate. Any monthly calculation of interest at a stated rate shall be
based upon annual interest at such rate divided by twelve.

         "Bond Manager": Capstead Mortgage Corporation, or its successors and
assigns.

         "Bond Management Agreement": The Agreement dated as of September 1,
1998 between the Issuer and Capstead Mortgage Corporation, as Bond Manager.

                                       2

<PAGE>   6

         "Bond Redemption Date": Each of the dates identified in Section 16(a)
and (b) hereof on which the Series 1998-3 Bonds may be called for redemption.

         "Book Entry Bonds:  The Class A Bonds.

         "Cap Agreement": The requirement of the Trustee to make payments to the
Class A Bonds pursuant to Section 12.

         "Certificate Distribution Date": The date specified in each Pooling and
Administration Agreement for monthly distributions on the related Conventional
Certificates.

         "Certificate Trustee": The institution identified as such in the
applicable Pooling and Administration Agreement.

         "Class": Each class subdivision of the Bonds created hereunder pursuant
to Section 5.

         "Class A Bond Interest Rate": As to the Class A Bonds and any Payment
Date, a per annum rate equal to LIBOR plus the Margin for such date, but in no
event greater than the lesser of (x) the Net WAC for such date, and (y) 8.50%
per annum.

         "Class A Regular Interest": The regular interest, within the meaning of
Code Section 860G(a)(1), represented by the Class A Bonds, other than the right
to receive amounts under the Cap Agreement.

         "Class AX Bond Interest Rate": As to the Class AX Bonds and any Payment
Date, a per annum rate equal to the excess of (x) the Net WAC for such date,
over (y) the Class A Bond Interest Rate for such date.

         "Class AX Regular Interest": The regular interest, within the meaning
of Code Section 860G(a)(1), represented by the Class AX Bond, other than (i) the
right to receive the Initial Deposit and the investment earnings on the Reserve
Fund and (ii) the obligation to make payments under the Cap Agreement.

         "Class Current Principal Balance": With respect to the Class A Bonds
and Class R Bonds and any Payment Date, the sum of the Current Principal
Balances of all Class A Bonds or Class R Bonds as the case may be, on said date.

         "Class Notional Balance": As to the Class AX Bonds and any Payment
Date, the sum of the Class Current Principal Balances of the Class A Bonds and
the Class R Bonds for such date.

         "Clearing Agency": The registered Holder of the single Bond evidencing
the Book Entry Bonds. The initial Clearing Agency with respect to the Book Entry
Bonds shall be The Depository Trust Company of New York, the nominee for which
is Cede & Co. The Clearing Agency shall at all times be a "clearing corporation"
as defined in Article 8 of the Uniform Commercial Code of the State of New York.

         "Closing Date": September 29, 1998.

                                       3

<PAGE>   7

         "Compensating Payment": As to any Payment Date, the amount paid to the
Class A Bonds on such date pursuant to Section 10(b) hereof.

         "Conventional Certificates": The certificates pledged to secure the
Series 1998-3 Bonds, as set forth on Schedule A hereto.

         "Corporate Trust Office": The principal office of the Trustee at which
at any particular time its corporate trust business shall be administered, which
office at the date of this Agreement is located at 601 Travis, Houston, Texas
77002; Attention 10 CTH 382 Corporate Trust Department, or at such other address
as the Trustee may designate from time to time with notice to the Issuer and
Bondholders, or the principal corporate trust office of any successor Trustee at
the address designated by such successor Trustee by notice to the Issuer and
Bondholders.

         "CPR": A model designed to measure the rate of prepayment of a pool of
mortgage loans assuming a specified constant prepayment percentage for the life
of such pool.

         "Current Principal Balance": With respect to any Bond (other than a
Class AX Bond) as of any Payment Date, the initial principal amount of such Bond
as of the Closing Date, as reduced by all amounts paid on previous Payment Dates
on such Bond with respect to principal.

         "Cut-off Date":  September 1, 1998.

         "ERISA Restricted Bonds":  The Class AX Bonds.

         "ERISA Prohibited Bonds":  The Class R Bonds.

         "Global Bond Certificate": Any Bond registered in the name of the
Clearing Agency or its nominee, beneficial interests in which are reflected on
the books of the Person maintaining an account with such Clearing Agency
(directly or as an indirect participant in accordance with rules of such
Clearing Agency).

         "Individual Bond":  As defined in Section 10(f) hereof.

         "Individual Bond Certificate": Any Bond registered in the name of a
Holder other than the Clearing Agency or its nominee.

         "Initial Call Date":  The Payment Date occurring in March 2001.

         "Initial Deposit":  $5,000.00.

         "Interest Accrual Period": With respect to each Payment Date, the
period beginning on the previous Payment Date (or, in the case of the first
Payment Date, the Closing Date) and ending on the day preceding such Payment
Date.

         "Interest Only Bonds": The Class AX Bonds.

         "Letter Agreements": The Letter of Representations to The Depository
Trust Company from the Trustee and the Issuer dated September 29, 1998 with
respect to the Book Entry Bonds.

                                       4

<PAGE>   8

         "LIBOR": With respect to each Interest Accrual Period for the Class A
Bonds, the London Interbank Offered Rate for one-month United States
dollar-denominated deposits determined in accordance with the following
provisions:

         (i) On the second business day prior to the first day of the related
         Interest Accrual Period (each, a "LIBOR Determination Date"), until the
         Class Current Principal Balances of the Class A Bonds have been reduced
         to zero, the Trustee will request each of the designated reference
         banks meeting the criteria set forth herein (the "Reference Banks") to
         inform the Trustee of the quotation offered by its principal London
         office for making one-month United States dollar deposits in leading
         banks in the London interbank market, as of 11:00 a.m. (London time) on
         such LIBOR Determination Date. (For purposes of calculating LIBOR,
         "business day" means a day on which banks are open for dealing in
         foreign currency and exchange in London and New York City.) In lieu of
         making a request of the Reference Banks, the Trustee may rely on the
         quotations for those Reference Banks that appear at such time on the
         Reuters Screen LIBO Page (as defined in the International Swap Dealers
         Association Inc. Code of Standard Wording, Assumptions and Provisions
         for Swaps, 1986 Edition), to the extent available.

         (ii) LIBOR will be established by the Trustee on each LIBOR
         Determination Date as follows:

         (a) If on any LIBOR Determination Date two or more Reference Banks
provide such offered quotations, LIBOR for the next Interest Accrual Period
shall be the arithmetic mean of such offered quotations (rounded upwards if
necessary to the nearest whole multiple of 1/32%).

         (b) If on any LIBOR Determination Date only one or none of the
Reference Banks provides such offered quotations, LIBOR for the next Interest
Accrual Period shall be whichever is the higher of (i) LIBOR as determined on
the previous LIBOR Determination Date or (ii) the Reserve Interest Rate. The
"Reserve Interest Rate" shall be the rate per annum which the Trustee determines
to be either (i) the arithmetic mean (rounded upwards if necessary to the
nearest whole multiple of 1/32%) of the one-month United States dollar lending
rates that New York City banks selected by the Trustee are quoting, on the
relevant LIBOR Determination Date, to the principal London offices of at least
two of the Reference Banks to which such quotations are, in the opinion of the
Trustee, being so made, or (ii) in the event that the Trustee can determine no
such arithmetic mean, the lowest one-month United States dollar lending rate
which New York City banks selected by the Trustee are quoting on such LIBOR
Determination Date to leading European banks.

         (c) If on the first LIBOR Determination Date, the Trustee is required
but is unable to determine the Reserve Interest Rate in the manner provided in
paragraph (b) above, LIBOR shall be 5.387%. If on any subsequent LIBOR
Determination Date, the Trustee is required but is unable to determine the
Reserve Interest Rate in the manner provided in paragraph (b) above, LIBOR shall
be LIBOR for the immediately preceding LIBOR Determination Date.

         (iii) Each Reference Bank shall (i) be a leading bank engaged in
         transactions in Eurodollar deposits in the international Eurocurrency
         market, (ii) not control, be controlled by, or be under common control
         with the Trustee, and (iii) have an established

                                       5

<PAGE>   9

         place of business in London. If any such Reference Bank should be
         unwilling or unable to act as such or if the Trustee should terminate
         the appointment of any such Reference Bank, the Trustee will promptly
         appoint another leading bank meeting the criteria specified above.

         (iv) The establishment of LIBOR on each LIBOR Determination Date by the
         Trustee and the Trustee's calculation of the rate of interest
         applicable to the Class A Bonds for the related Interest Accrual Period
         shall (in the absence of manifest error) be final and binding.

         "Margin": As to each Payment Date through and including the Initial
Call Date, 0.18%; as to each Payment Date thereafter, 0.36%.

         "Maximum Bond Interest Rate Assumption": The lesser of (i) the Net WAC
and (ii) 8.50%.

         "Mortgage Loan": As defined in the applicable Pooling and
Administration Agreement.

         "Net Interest Shortfall": As to any Payment Date, the aggregate of
interest shortfalls (net of any compensating payment made in respect thereof by
the related Servicer) on the Conventional Certificates resulting from
prepayments on the related Mortgage Loans or the application of the Soldiers and
Sailors' Civil Relief Act of 1940, as amended. The aggregate of Net Interest
Shortfalls for any Payment Date shall be allocated between the Class A and Class
AX Bonds in proportion to the amount of such Accrued Bond Interest that would
have accrued on such Bonds in absence of such Net Interest Shortfalls.

         "Net WAC": As to any Payment Date, the weighted average (by principal
balance) of the interest rates of the Conventional Certificates for such date
less the Trustee's Fee Rate.

         "Non-U.S. Person":  A Person other than a United States Person.

         "Offered Bond":  Any Class A Bond.

         "Payment Date": The twenty-fifth day of each month, or if such day is
not a Business Day, the next succeeding Business Day, commencing in October
1998.

         "Permitted Transferee": As to a Residual Bond, a transferee of such
Residual Bond that is not a Disqualified Organization and not a Non-U.S. Person
and satisfies the requirements for a transferee of a Residual Bond under Section
2.15 of the Indenture.

         "Pledged Account":  The Collection Account and the Reserve Fund.

         "Pooling and Administration Agreement": Each Pooling and Administration
Agreement pursuant to which a Conventional Certificate was issued.

         "Prepayment Assumption":  40% CPR.

                                        6

<PAGE>   10

         "Rating Agencies": As of the Closing Date, Standard & Poor's Rating
Services, a division of the McGraw-Hill Companies, Inc. and Duff & Phelps Rating
Co.

         "Record Date": With respect to any Payment Date, the close of business
on the last Business Day of the month immediately preceding the month of such
Payment Date.

         "REMIC": A "real estate mortgage investment conduit" as defined in
Section 860D of the Code.

         "Reserve Fund": The Eligible Account established and monitored pursuant
to Section 12 hereof. The Reserve Fund shall in no event become an asset of the
REMIC.

         "Reserve Fund Deficiency": As to any Payment Date the excess of (x) the
Reserve Fund Requirement for such date over (y) the amount on deposit in the
Reserve Fund on such date.

         "Reserve Fund Deposit": With respect to any Payment Date, an amount
equal to the lesser of (x) the sum of the Reserve Fund Deficiency and Basis Risk
Shortfall applicable to such Payment Date and (y) either, in the event that a
Basis Risk Shortfall exists on such Payment Date, Accrued Bond Interest on the
Class AX Bonds for such Payment Date or, in the event that a Reserve Fund
Deficiency exists but a Basis Risk Shortfall does not exist on such Payment
Date, 50% of the Accrued Bond Interest on the Class AX Bonds for such Payment
Date.

         "Reserve Fund Requirement": As to any Payment Date, $5,000; provided,
however, that if on any Payment Date the Net WAC for such date exceeds LIBOR
plus the applicable Margin by less than 0.25%, the Reserve Fund Requirement for
such date shall equal the product of 0.50% and the Class Current Principal
Balance of the Class A Bonds for such date.

         "Residual Bonds":  Any of the Class R Bonds.

         "Residual Interest":  The Class R Bonds.

         "Restricted Bonds":  None.

         "Series 1998-3 Bonds": Each Class of Bonds set forth in Section 5
hereof.

         "Series 1998-3 REMIC":  The REMIC established hereby.

         "Special Payment Date":  As specified by Section 8 hereof.

         "Stated Maturity": With respect to a Class of Bonds, as specified in
Section 5.

         "Startup Day":  As defined in Section 18.

         "Substitute Mortgage Loan": As defined in the Pooling and
Administration Agreement.

         "Transferor":  A transferor of a Residual Bond.

         "Trust Fund": As defined in applicable Pooling and Administration
Agreement.

                                       7

<PAGE>   11

         "Trustee's Fee": As to any Payment Date, an amount equal to the product
of (i) the aggregate Certificate Principal Balance and (ii) 1/12 the Trustee Fee
Rate.

         "Trustee Fee Rate":  0.00385% per annum.

         "Underwriter": Greenwich Capital Markets, Inc.

         "United States Person": (i) a citizen or resident of the United States;
(ii) a corporation (or entity treated as a corporation for tax purposes) created
or organized in the United States or under the laws of the United States or of
any state thereof, including, for this purpose, the District of Columbia; (iii)
a partnership (or entity treated as a partnership for tax purposes) organized in
the United States or under the laws of the United States or of any state
thereof, including, for this purpose, the District of Columbia (unless provided
otherwise by future Treasury regulations); (iv) an estate whose income is
includible in gross income for United States income tax purposes regardless of
its source; or (v) a trust, if a court within the United States is able to
exercise primary supervision over the administration of the trust and one or
more U.S. Persons have authority to control all substantial decisions of the
trust. Notwithstanding the last clause of the preceding sentence, to the extent
provided in Treasury regulations, certain trusts in existence on August 20,
1996, and treated as U.S.
Persons prior to such date, may elect to continue to be U.S. Persons.

         SECTION (2)  DESIGNATION.

         The Series 1998-3 Bonds shall be designated generally as the Issuer's
Collateralized Mortgage Obligations, Series 1998-3.

         SECTION (3)  DATING OF SERIES 1998-3 BONDS; CALCULATION OF INTEREST
ACCRUED.

         The Series 1998-3 Bonds that are authenticated and delivered by the
Trustee to or upon the order of the Issuer on the Closing Date shall be dated
the Closing Date. All other Series 1998-3 Bonds that are authenticated after the
Closing Date for any other purpose under the Indenture shall be dated the date
of their authentication.

         The Class A Bonds shall constitute the only Class of Book Entry Bonds.

         SECTION (4)  TRANSFER OF ERISA RESTRICTED BONDS.

         No transfer of an ERISA Restricted Bond in definitive form may be made
except as provided in Section 2.15 of the Indenture.

         SECTION (5)  AGGREGATE PRINCIPAL AMOUNT; CLASSES.

         The aggregate principal amount of Series 1998-3 Bonds that may be
authenticated and delivered under this Series 1998-3 Supplement shall be
$345,831,963 except for Series 1998-3 Bonds authenticated and delivered upon
registration of transfer of, or in exchange for, or in lieu of, other Series
1998-3 Bonds pursuant to Sections 2.6, 2.7, 2.8 or 9.6 of the Indenture. Such
aggregate principal amount shall be divided among the three Classes having the
designations,

                                       8

<PAGE>   12

original Class Current Principal Balances (or Class Notional Balances), Bond
Interest Rates and Stated Maturities of their final installment of principal as
follows:



<TABLE>
<CAPTION>

                                              Approximate Initial         Stated Maturity
       Class                Bond                   Current                 (Payment Date
    Designation         Interest Rate          Principal Balance           Occurring In)
    -----------         -------------          -----------------           -------------
<S>                               <C>               <C>                    <C> 
Class A Bonds                     (1)               $345,831,863           February, 2025
Class AX Bonds                    (2)                      (4)             February, 2025
Class R Bonds                     (3)                   $100.00            February, 2025
</TABLE>


- -------------------
(1)   Interest shall accrue on the Class A Bonds at the Class A Bond Interest
      Rate.

(2)   Interest shall accrue on the Class AX Bonds at the Class AX Bond Interest
      Rate.

(3)   Interest shall accrue on the Class R Bonds at the Class A Bond Interest
      Rate.

(4)   The Class AX Bonds are interest only bonds and are issued with an initial
      Class Notional Balance of $345,831,963.


         SECTION (6)  DENOMINATIONS OF SERIES 1998-3 BONDS.

         The Book Entry Bonds shall initially be evidenced by a single Bond
representing the initial Class Current Principal as of the Closing Date. The
Class A Bonds shall be issued in minimum denominations of $25,000 in principal
balance in increments of $1 in excess thereof, and the Class AX Bonds shall be
issued in certificated fully-registered form in minimum denominations of
$100,000 in Class Notional Balance and, in each case, integral multiples of
$1,000 in excess thereof. The Class R Bonds shall be issued as a single
certificate in certificated fully-registered form, representing the entire
interest Original Principal Amount thereof. Notwithstanding the foregoing, one
Bond of each Class of Bonds, other than the Residual Bonds, may be issued in a
different principal or notional balance. All of the Book Entry Bonds shall
initially be registered on the Bond Register in the name of Cede & Co., the
nominee of the Clearing Agency, and no Beneficial Owner thereof will receive a
Definitive Bond representing such Beneficial Owner's interest in the Book Entry
Bonds, except in the case of Individual Bond Certificates, and except in the
event of Book Entry Termination.

         SECTION (7)  AUTHENTICATION OF SERIES 1998-3 BONDS.

         The Series 1998-3 Bonds may be authenticated by the Trustee at the
Corporate Trust Office. There shall be no Authenticating Agent for the Series
1998-3 Bonds unless the appointment of an Authenticating Agent is required as a
condition to the listing of the Series 1998-3 Bonds on any stock exchange.

                                       9

<PAGE>   13

         SECTION (8)  PAYMENT DATES.

         For purposes of the Indenture, the Interest Payment Dates and Principal
Payment Dates for the Series 1998-3 Bonds are each a Payment Date. For purposes
of the Indenture, the Special Payment Dates for the Series 1998-3 Bonds are the
25th day of any calendar month in which any Outstanding Series 1998-3 Bonds are
Overdue Bonds.

         SECTION (9)  PLACES FOR PAYMENT OF PRINCIPAL OF SERIES 1998-3 BONDS;
            PAYMENTS ON BOOK ENTRY BONDS.

         (a) The final payment of principal in retirement of each Class A or
Class R Bond, the final payment of interest in respect of a Class AX Bond, or
the final payment of contingent interest, if any, in respect of a Class R Bond
(or the Redemption Price of any such Series 1998-3 Bond called for redemption in
full), shall be payable upon presentation and surrender thereof only at the
office of the Trustee in the Borough of Manhattan, City and State of New York.

         (b) Each payment of principal of and interest on a Book Entry Bond
shall be paid to the Clearing Agency, which shall credit the amount of such
payments to the accounts of its Clearing Agency Participants in accordance with
its normal procedures. Each Clearing Agency Participant shall be responsible for
disbursing such payments to the Beneficial Owners of the Book Entry Bonds that
it represents and to each indirect participating brokerage firm (a "brokerage
firm" or "indirect participating firm") for which it acts as agent. Each
brokerage firm shall be responsible for disbursing funds to the Beneficial
Owners of the Book Entry Bonds that it represents. All such credits and
disbursements are to be made by the Clearing Agency and the Clearing Agency
Participants in accordance with the provisions of the Bonds. Neither the
Trustee, the Bond Registrar nor the Issuer shall have any responsibility
therefor except as otherwise provided by applicable law.

         SECTION (10)  PAYMENT ON THE BONDS BEFORE ACCELERATION; REPORTS TO
            BONDHOLDERS.

         (a) Before acceleration, if any, of the Bonds pursuant to Section 5.2
of the Indenture, the Trustee shall apply Available Funds on each Payment Date
(after deducting the applicable Trustee's Fee for such Payment Date) to pay
interest on and principal of the Bonds in the following priority and amounts:

         first, to each Class of Bonds, the Accrued Bond Interest thereon for
         such Payment Date; provided, however, that if on such Payment Date a
         Basis Risk Shortfall or Reserve Fund Deficiency exists, the amount
         otherwise payable to the Class AX Bonds pursuant to this clause shall
         be reduced by the Reserve Fund Deposit applicable to such Payment Date
         and such amount shall be deposited in the Reserve Fund pursuant to
         Section 12 hereof; and provided further that any shortfall in available
         amounts (other than as described in the preceding proviso) shall be
         allocated among such Classes in proportion to the amount of Accrued
         Bond Interest otherwise payable thereon; and provided further that
         amounts payable pursuant to this clause first shall be subject to
         Section 10 (c) hereof;

         second, to each Class of Bonds, any Accrued Bond Interest thereon
         remaining unpaid from previous Payment Dates, with any shortfall in
         available amounts

                                       10

<PAGE>   14

         being allocated among such Classes in proportion to the amount of such
         Accrued Bond Interest remaining unpaid for each such Class for such
         Payment Date; provided, however, that any such unpaid amounts with
         respect to the Class AX Bonds to the extent they represent amounts that
         would have been deposited in the Reserve Fund in respect of Basis Risk
         Shortfalls or Reserve Fund Deficiencies on previous Payment Dates shall
         not be payable to the Class AX Bonds but shall instead be deposited in
         the Reserve Fund; and provided further that amounts payable pursuant to
         this clause second shall be subject to Section 10(c) hereof;

         third, to the extent of distributions received on the Conventional
         Certificates attributable to principal, to the Class R Bonds in
         reduction of the Class Current Principal Balance thereof, until the
         Class Current Principal Balance thereof has been reduced to zero;

         fourth, to the extent of distributions received on the Conventional
         Certificates attributable to principal less amounts payable pursuant to
         clause third, to the Class A Bonds in reduction of the Class Current
         Principal Balance thereof, until the Class Current Principal Balance
         thereof has been reduced to zero, and

         fifth, any remaining amounts shall be distributed to the Class R Bonds.

         (b) As provided in Section 12 hereof, the Class A Bonds are subject to
additional payments from the Reserve Fund on any Payment Date as to which a
Basis Risk Shortfall exists for such Class of Bonds.

         (c) No Accrued Bond Interest shall be payable with respect to any Class
of Bonds after the Payment Date on which the Current Class Principal Balance or
Class Notional Balance thereof has been reduced to zero.

         (d) Payment of the above amounts to each Bondholder shall be made (i)
by check mailed to each Bondholder entitled thereto at the address appearing in
the Bond Register or (ii) upon receipt by the Trustee on or before the fifth
Business Day preceding the Record Date of written instructions from a Bondholder
holding Bonds representing an initial aggregate Current Principal Balance or
Class Notional Balance of not less than $1,000,000 by wire transfer to a United
States dollar account maintained by the payee at any United States depository
institution with appropriate facilities for receiving such a wire transfer;
provided, however, that the final payment in respect of each Class of Bonds
shall be made as provided in Section 9(a).

         (e) Concurrently with each payment to Bondholders, the Trustee shall
forward by first-class mail to each Bondholder, with a copy to the Issuer, the
Underwriter and the Rating Agencies, a statement setting forth the following
information, expressed with respect to clauses (i) and (v) of this Section 10(e)
in the aggregate and with respect to an individual Bond representing an initial
Current Principal Balance of $1,000, or in the case of a Class of Interest Only
Bonds, a Class Notional Balance of $1,000 (in each case, an "Individual Bond"
with respect to the applicable Class):

                                       11

<PAGE>   15

         (i)      the Class Current Principal Balance (or Class Notional Balance
         in the case of a Class of Interest Only Bonds) of each Class of Bonds
         immediately prior to such Payment Date;

         (ii)     the amount of the payment allocable to principal on the Class
         A and Class R Bonds;

         (iii)    the aggregate amount of interest accrued at the related Bond
         Interest Rate with respect to each Class of interest-bearing Bonds
         during the related Interest Accrual Period;

         (iv)     the Net Interest Shortfall and any other adjustments to
         interest at the related Bond Interest Rate necessary to account for any
         difference between interest accrued and aggregate interest paid with
         respect to each Class of interest-bearing Bonds;

         (v)      the amount of the payment allocable to interest on each Class
         of Bonds;

         (vi)     the Bond Interest Rate for each Class of interest-bearing
         Bonds with respect to such Payment Date;

         (vii)    the Class Current Principal Balance (or Class Notional Balance
         in the case of a Class of Interest Only Bonds) of each Class of Bonds
         after such Payment Date;

         (viii)   the amount of Scheduled Principal and Principal Prepayments,
         including but separately identifying the principal amount of Principal
         Prepayments, Insurance Proceeds, the purchase price in connection with
         the purchase of Mortgage Loans, cash deposits in connection with the
         substitutions of Mortgage Loans and Net Liquidation Proceeds) and the
         number and principal balance of Mortgage Loans purchased or substituted
         for during the relevant period and cumulatively since the Cut-off Date;

         (ix)     the number of Mortgage Loans (excluding REO Property (as
         defined in the related Pooling and Administration Agreement)) remaining
         in all of the Trust Funds as of the end of the related Due Period;

         (x)      information regarding any Mortgage Loan delinquencies as of
         the end of the related Due Period (as defined in the related Pooling
         and Administration Agreement), including the aggregate number,
         aggregate outstanding principal balance and aggregate Scheduled
         Principal Balance of Mortgage Loans delinquent one month, two months
         and three months or more;

         (xi)     the number of Mortgage Loans in the foreclosure process as of
         the end of the related Due Period (as defined in the related Pooling
         and Administration Agreement) and the aggregate Outstanding Principal
         Balance of such Mortgage Loans;

         (xii)    the number and aggregate Outstanding Principal Balance of all
         Mortgage Loans as to which the Mortgaged Properties were REO Properties
         as of the end of the related Due Period; and

                                       12

<PAGE>   16

         (xiii)   the book value (the sum of (A) the outstanding principal
         balance of the Mortgage Loan, (B) accrued interest through the date of
         foreclosure and (C) foreclosure expenses) of any REO Property;
         provided, however, that in the event that such information is not
         available to the applicable Administrator and the Trustee on the
         Payment Date, such information shall be furnished promptly after it
         becomes available.

The information set forth above shall be calculated, or reported, as the case
may be, by the Trustee based on data provided by the Administrators pursuant to
Section 6.02 of each Pooling and Administration Agreement upon which the Trustee
may conclusively rely. The information furnished by the Administrators shall be
sufficient for the Trustee to calculate any statement it is required to make. In
addition to the information set forth in clauses (i) through (xiii) above, the
statement to the Rating Agencies shall also include with respect to each Trust
Fund underlying the Conventional Certificates, the aggregate outstanding
principal balances of the Mortgage Loans in the related Mortgage Pool; the
Mortgage Pool insurance policy and special hazard insurance policy coverage
remaining for such Mortgage Pool; and cumulative losses. In addition, if so
requested by a Rating Agency, the Trustee shall provide such Rating Agency with
copies of the remittance reports with respect to each Trust Fund underlying the
Conventional Certificates. Capitalized terms used in this Section 10(e) and not
otherwise defined herein shall have the meaning ascribed to them in the
applicable Pooling and Administration Agreement.

         (g) By April 30 of each year beginning in 1999, the Trustee will, if
required by the Internal Revenue Code, furnish a report to each Holder of the
Bonds of record at any time during the prior calendar year as to the aggregate
of amounts reported pursuant to subclauses (e)(ii) and (e)(v) above with respect
to the Bonds, plus information with respect to the amount of servicing
compensation and such other customary information as the Administrators may
determine to be necessary and/or to be required by the Internal Revenue Service
or by a federal or state law or rules or regulations to enable such Holders to
prepare their tax returns for such calendar year. Such obligations shall be
deemed to have been satisfied to the extent that substantially comparable
information shall be provided by the Trustee pursuant to the requirements of the
Code.

         SECTION (11)  PAYMENT OF THE BONDS ON AND AFTER ACCELERATION.

         On each Payment Date, if the Bonds are declared due and payable
pursuant to Section 5.2 of the Indenture, (i) Accrued Bond Interest on each
Class of Bonds shall be paid pro rata in accordance with the amount of unpaid
Accrued Bond Interest on each such Class of Bonds from Available Funds, and (ii)
payments of principal on each outstanding Class A or Class R Bond shall be paid
pro rata out of remaining Available Funds until the Class Current Principal
Balance thereof has been reduced to zero.

         SECTION (12)  RESERVE FUND.

         On or prior to the Closing Date, the Trustee shall establish and
thereafter maintain a segregated account held in trust for the benefit of
Bondholders as herein provided. On or prior to the Closing Date, the Issuer
shall make the Initial Deposit to the Reserve Fund. The Reserve Fund shall at
all times be maintained as an Eligible Account. The Reserve Fund shall in no
event constitute an asset of the REMIC and shall at all times (i) be maintained
as an "outside reserve

                                       13

<PAGE>   17

fund" pursuant to U.S. Treasury Regulation 1.860G-2(h); (ii) be owned for
federal income tax purposes by the beneficial owners of the Class AX Bonds;
(iii) all amounts deposited in the Reserve Fund pursuant to Section 10 hereof
shall be treated as a distribution to the Class AX Bondholders; and (iv) not
elect to be treated as an association taxable as a corporation under Treasury
Regulations Section 301.7701-3(a). Funds on deposit in the Reserve Fund shall be
invested by the Trustee at the direction of the Issuer in Eligible Investments.
Any investment earnings on such Eligible Investments on deposit in the Reserve
Fund shall be released to the Bond Manager on each Payment Date as compensation
for its services rendered under the Bond Management Agreement.

         On each Payment Date, the Trustee shall transfer for deposit to the
Reserve Fund all amounts required to be so transferred pursuant to clauses first
and second of Section10(a)(i). To the extent that a Basis Risk Shortfall exists
on any Payment Date the Trustee shall withdraw from the Reserve Fund and pay
such amount to the Class A Bonds on such Payment Date along with amounts
otherwise payable pursuant to Section 10. In addition, if on any Payment Date
amounts on deposit in the Reserve Fund exceed the Reserve Fund Requirement for
such date, such excess shall be payable to the Class AX Bonds on such Payment
Date along with amounts otherwise payable thereto pursuant to Section 10. Upon
retirement of the Class A Bonds, any amounts on deposit to the Reserve Fund
shall be paid to the Class AX Bonds.

         SECTION (13)  TRANSFER OF CERTIFICATES TO TRUSTEE; DEPOSITS TO
            COLLECTION ACCOUNT; PLEDGED ACCOUNTS.

         (a) The Conventional Certificates shall have been registered in the
name of the Trustee or its Qualified Nominee by no later than the Closing Date
pursuant to Section 2.12(f)(iii) of the Indenture. The Trustee shall have
confirmed in writing on or prior to the Closing Date that it is holding such
Conventional Certificates as Trustee.

         (b) A Qualified GIC shall not be granted to the Trustee with respect to
the investment of funds in any Pledged Account for the Series 1998-3 Bonds.

         SECTION (14)  REQUIREMENTS FOR ISSUANCE OF SERIES 1998-3 BONDS.

         Except as to an executed counterpart of each Pooling and Administration
Agreement, no additional items shall be required to be delivered to the Trustee
pursuant to Sections 2.12(l) of the Indenture in connection with the issuance of
the Series 1998-3 Bonds.

         SECTION (15)  CALCULATIONS WITH RESPECT TO UNDERLYING MORTGAGE LOANS.

         Calculations with respect to the Mortgage Loans underlying the
Conventional Certificates granted as security for the Series 1998-3 Bonds shall
be made on a mortgage loan-by-mortgage loan basis to the extent required to
determine the amounts to be paid on the Bonds on each Payment Date.

                                       14

<PAGE>   18

         SECTION (16)  REDEMPTION.

         (a) The Series 1998-3 Bonds shall be subject to redemption in whole,
but not in part, on any Payment Date on or after the Initial Call Date. Any such
redemption of a Series 1998-3 Bond shall be effected at the Redemption Price
therefor.

         (b) The Series 1998-3 Bonds shall also be subject to redemption in
whole, but not in part, on each Payment Date on or after the date the Class
Current Principal Balance of the Class A Bonds is less than 25% of the Original
Principal Amount thereof. Any such redemption of a Series 1998-3 Bond shall be
effected at the Redemption Price therefor.

         SECTION (17)  ACTIONS BY TRUSTEE AS HOLDER OF CONVENTIONAL
            CERTIFICATES.

         (a) With the consent of the Holders of Series 1998-3 Bonds representing
not less than 66-2/3% of the aggregate principal balance of all Outstanding
Series 1998-3 Bonds, by Act of said Holders delivered to the Issuer and the
Trustee, the Issuer, when authorized by an Issuer Resolution, and the Trustee
may take any action that by the terms of the applicable Pooling and
Administration Agreement requires the consent of the holder of the Conventional
Certificates, including but not limited to: (1) entering into any amendments to
a Pooling and Administration Agreement; (2) removing or consenting to the
removal of, and appointing or consenting to the appointment of, a successor
Administrator; and (3) removing or consenting to the removal of, and appointing
or consenting to the appointment of, the Person acting as trustee under such
Pooling and Administration Agreement; provided, however, that no such action
shall, without the consent of the Holder of each Outstanding Bond affected
thereby:

                  (1) reduce the amount of, or delay the timing of, payments
                  received on its related Trust Fund that are required to be
                  distributed on any Conventional Certificate or change the
                  repurchase price with respect thereto, change any place of
                  payment where, or the coin or currency in which, any
                  Conventional Certificate or any interest thereon is payable,
                  or impair the right to institute suit for the enforcement of
                  the payment of any installment of interest or principal due on
                  any Conventional Certificate or adversely affect the tax
                  consequences to any holder of a Conventional Certificate;

                  (2) change the requirement of the consent of the holders of
                  the Conventional Certificate for any such action pursuant to
                  such Pooling and Administration Agreement;

                  (3) modify any of the provisions of this Section, except to
                  increase any percentage specified herein; or

                  (4) permit the creation of any lien ranking prior to or on a
                  parity with the related Trust created by such Pooling and
                  Administration Agreement with respect to any part of its
                  related Trust Fund or terminate the related Trust created by
                  such Pooling and Administration Agreement on any property at
                  any time subject thereto or deprive the Holder of any Bond of
                  the security afforded by the Conventional Certificate;

                                       15

<PAGE>   19

provided, however, that notwithstanding the foregoing provisions of this
Section, Issuer and the Trustee may, without the consent of any Holder of any
Series 1998-3 Bonds, consent to the release from or termination of a trust
created by such Pooling and Administration Agreement with respect to any
Mortgage Loan when such action by the Issuer and the Trustee is specifically
authorized by any other provision of the Indenture, this Series 1998-3
Supplement or the Pooling and Servicing Agreement.

         The Trustee may in its discretion determine whether or not any Series
1998-3 Bonds would be affected by any proposed action and any such determination
shall be conclusive upon the Holders of all Series 1998-3 Bonds, whether
theretofore or thereafter authenticated and delivered hereunder. The Trustee
shall not be liable for any such determination made in good faith.

         It shall not be necessary for any Act of Bondholders under this Section
to approve the particular form of any written instrument proposed to effect such
action, but it shall be sufficient if such Act shall approve the substance
thereof.

         Promptly after the execution by the Issuer and the Trustee of any
written instrument proposed to effect such action pursuant to this Section, the
Issuer shall mail to the Holders of the Series 1998-3 Bonds to which such action
relates a notice setting forth in general terms the substance of such action.
Any failure of the Issuer to mail such notice, or any defect therein, shall not,
however, in any way impair or affect the validity of any such action.

         (b) The Issuer hereby acknowledges and agrees that should the Person
acting as trustee under a Pooling and Administration Agreement demand indemnity
satisfactory to it as a condition precedent to taking any action requested by
the Trustee, as holder of the Conventional Certificates, the Trustee hereunder
shall have no duty or obligation to advance its own funds in fulfillment of such
indemnity, but rather may request such indemnity from the Issuer or from the
Holders of the Series 1998-3 Bonds.

         SECTION (18)  REMIC ADMINISTRATION.

         (a) The Issuer shall make an election to treat the Trust Estate, other
than the Reserve Fund, the Initial Deposit and the Cap Agreement as a REMIC
under the Code and, if necessary, under applicable state law. Such elections
will be made on Forms 1066 or other appropriate federal tax or information
return or any appropriate state return for the taxable year ending on the last
day of the calendar year in which the Bonds are issued. The Class A Regular
Interest and the Class AX Regular Interest shall be designated as the "regular
interests" and the Class R Bonds shall be designated as the sole class of
"residual interest". The Issuer shall not permit the creation of any "interests"
in the Series 1998-3 REMIC (within the meaning of Section 860G of the Code)
other than the interests described in the previous sentence. The Trustee and the
Issuer shall account for payments made to the Class A Bonds under the Cap
Agreement separately from the other distributions on the Class A Bonds. Each
Holder of a Class A Bond shall be deemed to own an undivided beneficial
ownership interest in two assets: (i) the Class A Regular Interest and (ii) the
Cap Agreement. The Cap Agreement is not included as part of the Series 1998-3
REMIC. Each Holder of a Class AX Bond shall be deemed to own an undivided
beneficial ownership in the Reserve Account for purposes of the REMIC
Provisions. Notwithstanding the

                                       16

<PAGE>   20
foregoing, if the aggregate initial schedule principal balance of the Mortgage
Loans exceeds the initial Class Current Principal Balance of the Bonds, the
Trustee shall issue to Capstead Mortgage Corporation an additional "regular
interest" having such excess as its principal balance and having an interest
rate equal to the Net WAC. Such regular interest shall be paid interest and
principal after clause fourth in Section 10(a).

         (b) The Closing Date is hereby designated as the "startup day" of the
Series 1998-3 REMIC within the meaning of Section 860G(a)(9) of the Code.

         (c) The Issuer shall pay out of its own funds, without any right of
reimbursement from the Trust Estate, any and all expenses relating to any tax
audit of the Series 1998-3 REMIC (including, but not limited to, any
professional fees or any administrative or judicial proceedings with respect
thereto that involved the Internal Revenue Service or state tax authorities),
other than the expense of obtaining any tax related Opinion of Counsel not
obtained in connection with such an audit and other than taxes. The Holder of
the Class R Bonds shall be the tax matters person of the Series 1998-3 REMIC, in
the manner provided under Treasury Regulations Section 1.860F-4(d) and Treasury
Regulations Section 301.6231(a)(7)-1 and the Issuer is hereby irrevocably
designated and shall serve as attorney-in-fact and agent for any such Persons
that are tax matters persons. The Issuer, as designated by the tax matters
person, shall (i) act on behalf of the Series 1998-3 REMIC in relation to any
tax matter or controversy involving such Series 1998-3 REMIC and (ii) represent
the REMIC in any administrative or judicial proceeding relating to an
examination or audit by any governmental taxing authority with respect thereto.

         (d) The Issuer shall prepare or cause to be prepared, sign and file all
of the tax returns in respect of the Series 1998-3 REMIC, other than tax returns
required to be filed by a Administrator pursuant to a Pooling and Administration
Agreement. The expenses of preparing and filing such returns shall be borne by
the Issuer without any right of reimbursement therefor. The Issuer shall cause
the first federal income tax return of the Series 1998-3 REMIC to include the
information required by Treasury Regulation Section 1.860D-1(d)(2) and Treasury
Regulation Section 1.860F-4(b)(2).

         (e) The Issuer shall perform on behalf of the Trust Estate all
reporting and other tax compliance duties that are the responsibility of the
Trust Estate under the Code, REMIC Provisions or other compliance guidance
issued by the Internal Revenue Service or any state or local taxing authority,
except as provided in Section 10(g). Among its other duties, as required by the
Code, the REMIC Provisions or other such compliance guidance, the Issuer shall
provide (i) to any Transferor of a Residual Bond such information as is
necessary for the application of any tax relating to the transfer of a Class R
Bond to any Person who is not a Permitted Transferee, (ii) to Bondholders such
information or reports as are required by the Code or the REMIC Provisions
including reports relating to interest, original issue discount and market
discount or premium (using the Prepayment Assumption) and (iii) to the Internal
Revenue Service the name, title, address and telephone number of the person who
will serve as the representative of the Series 1998-3 REMIC. The Prepayment
Assumption for the purposes of Section 4.3(b)(iv) of the Indenture is the
Prepayment Assumption as defined in Section 1 hereof.

         (f) The Issuer shall take such action and shall cause the Series 1998-3
REMIC created hereunder to take such action as shall be necessary to create or
maintain the status of the

                                       17

<PAGE>   21

Series 1998-3 REMIC as a REMIC under the REMIC Provisions. The Issuer shall not
take any action, cause the Series 1998-3 REMIC to take any action or fail to
take (or fail to cause to be taken) any action that, under the REMIC Provisions,
if taken or not taken, as the case may be, could (i) endanger the status of the
Series 1998-3 REMIC as a REMIC or (ii) result in the imposition of a tax upon
the Series 1998-3 REMIC (including but not limited to the tax on prohibited
transactions as defined in Section 860F(a)(2) of the Code and the tax on
contributions to a REMIC set forth in Section 860G(d) of the Code) (either such
event, an "Adverse REMIC Event") unless the Issuer has received an Opinion of
Counsel (at the expense of the party seeking to take such action but in no event
shall such Opinion of Counsel be an expense of the Issuer) to the effect that
the contemplated action will not, with respect to the Series 1998-3 REMIC
created hereunder, endanger such status or result in the imposition of such a
tax. The Issuer shall cause the Administrators not to take or fail to take any
action (whether or not authorized hereunder) as to which the Issuer has received
an Opinion of Counsel (which such Opinion of Counsel shall not be an expense of
the Issuer) to the effect that an Adverse REMIC Event could occur with respect
to such action. At all times as may be required by the Code, the Issuer will
take no action, nor permit any such action, that it knows will cause
substantially all of the assets of the Series 1998-3 REMIC to not consist of
"qualified mortgages" as defined in Section 860G(a)(3) of the Code or "permitted
investments" as defined in Section 860G(a)(5) of the Code.

         (g) In the event that any tax is imposed on a "prohibited transaction"
of the Series 1998-3 REMIC created hereunder as defined in Section 860F(a)(2) of
the Code, on "net income from foreclosure property" of the Series 1998-3 REMIC
as defined in Section 860G(c) of the Code, on any contributions to the REMIC
after the Startup Day therefor pursuant to Section 860G(d) of the Code, or any
other tax is imposed by the Code or any applicable provisions of state or local
tax laws, such tax shall be charged (i) to the Issuer pursuant to Section 18(m)
hereof, if such tax arises out of or results from a breach by the Issuer of any
of its obligations hereunder, (ii) to the applicable Administrator pursuant to
the Pooling and Administration Agreement, if such tax arises out of or results
from a breach by such Administrator of any of its obligations under the
applicable Pooling and Administration Agreements, (iii) to the Trustee, if such
tax arises out of the malfeasance or gross negligence of the Trustee, or
otherwise (iv) from Available Funds.

         (h) On or before April 15 of each calendar year, commencing April 15,
1999, the Issuer shall deliver to each Administrator and each Rating Agency a
certificate from an officer of the Issuer stating the Issuer's compliance with
this Section 18.

         (i) The Issuer shall, for federal income tax purposes, maintain books
and records with respect to the Series 1998-3 REMIC on a calendar year and on an
accrual basis.

         (j) The Issuer shall not permit the acquisition of any assets by the
Series 1998-3 REMIC unless it shall have received an Opinion of Counsel (which
such Opinion of Counsel shall not be an expense of the Issuer) to the effect
that the inclusion of such assets in such Series 1998-3 REMIC will not cause the
Series 1998-3 REMIC to fail to qualify as a REMIC at any time that any Bonds are
outstanding or subject the Series 1998-3 REMIC to any tax under the REMIC
Provisions or other applicable provisions of federal, state and local law or
ordinances.

                                       18

<PAGE>   22

         (k) The Issuer shall not enter into any arrangement by which the Series
1998-3 REMIC will receive a fee or other compensation for services nor permit
such Series 1998-3 REMIC to receive any income from assets other than "qualified
mortgages" as defined in Section 860G(a)(3) of the Code or "permitted
investments" as defined in Section 860G(a)(5) of the Code.

         (l) Solely for purposes of satisfying Section 1.860G-1(a)(4)(iii) of
the Treasury Regulations, the "latest possible maturity date" of each regular
interest in the Series 1998-3 REMIC would be reduced to zero is the Payment Date
occurring in April 25, 2027.

         (m) The obligations of the Issuer under this Section 18 may be
performed for the Issuer by the Bond Manager in accordance with the provisions
of the Bond Management Agreement.

         SECTION (19)  FORM OF SERIES 1998-3 BONDS; MATTERS RELATING TO BOOK
            ENTRY BONDS.

         (a) The Series 1998-3 Bonds shall be in the respective forms attached
hereto as Exhibits A-1 through A-3. If the Series 1998-3 Bonds are listed on any
stock exchange at any time after the Closing Date, then the Issuer shall, if
required as a condition to such listing, prepare and deliver to the Trustee
Series 1998-3 Bonds in substantially the same form as the Series 1998-3 Bonds
issued on the Closing Date, but with such other additional features and such
modifications, if any, as shall be deemed by the Issuer to be necessary or
appropriate in order to comply with the requirements of such stock exchange for
the listing of the Series 1998-3 Bonds on such exchange. Series 1998-3 Bonds in
the form issued on the Closing Date shall thereafter be exchangeable for Series
1998-3 Bonds in such revised form to the same extent as temporary Bonds are
exchangeable for definitive Bonds pursuant to Section 2.6 of the Indenture. The
Issuer shall also include in the Series 1998-3 Bonds of any Class any
information required to be set forth therein pursuant to the Code and applicable
regulations thereunder.

         (b) The Clearing Agency, the Issuer and the Trustee have entered or
will enter into the Letter Agreements. The Book Entry Bonds will be issued and
registered in the form of a single typewritten bond certificate to be delivered
to the Clearing Agency by the Issuer substantially in the respective forms for
each such Class of Bonds attached as exhibits hereto. Such Bond certificates
shall be initially registered on the Bond Register in the name of the nominee of
such Clearing Agency and no Beneficial Owner will receive a certificate
representing its interests in any Class A Bond except in the case of Individual
Bond Certificates as provided herein and except in the event that the Trustee
issues Definitive Bonds, as provided in Section 2.14 of the Indenture.

         (c) Prior to Book Entry Termination, except for Individual Bond
Certificates, each Class A Bond will remain registered in the name of the
Clearing Agency or its nominee and at all times: (i) registration of such Bonds
may not be transferred by the Trustee or the Bond Registrar except to another
Clearing Agency; (ii) ownership and transfers of registration of such Bonds on
the books of the Clearing Agency shall be governed by applicable rules
established by the Clearing Agency; (iii) the Clearing Agency may collect its
usual and customary fees, charges and expenses from its Clearing Agency
Participants; (iv) the Trustee shall deal with the Clearing Agency, Clearing
Agency Participants and indirect participating firms as representatives of the
Beneficial Owners of the Class A Bonds for purposes of exercising the rights of
Holders under

                                       19

<PAGE>   23

the Indenture, and requests and directions for and votes of such representatives
shall not be deemed to be inconsistent if they are made with respect to
different Beneficial Owners; and (v) the Trustee may rely and shall be fully
protected in relying upon information furnished by the Clearing Agency with
respect to its Clearing Agency Participants and furnished by the Clearing Agency
Participants with respect to indirect participating firms and their direct or
indirect Beneficial Owners.

         (d) After Book Entry Termination, Definitive Bonds shall, after
execution and delivery of a supplemental indenture containing any provisions,
which in the opinion of the Issuer are necessary for such purpose, be issued to
the Beneficial Owners of the Class A Bonds outstanding at the time of such Book
Entry Termination and such Bonds shall no longer be "Book Entry Bonds."

         SECTION (20)  THE ADMINISTRATORS AND THE TRUSTEE.

         The Administrators, pursuant to each Pooling and Administration
Agreement, will provide the Certificate Trustee who will provide the Trustee
with certain information concerning the Mortgage Loans underlying the
Conventional Certificates. The Trustee shall not be required to recompute,
verify or recalculate the information supplied to it by the Issuer or any
Administrator and may conclusively rely and shall be protected in relying on the
accuracy of all such information in performing its duties and responsibilities
hereunder.

         SECTION (21)  SUPPLEMENTS, MODIFICATIONS AND RATIFICATIONS OF
            INDENTURE.

         (a) The Trustee will be required to mail, in each year when required by
the TIA, to all Bondholders a brief report relating to its eligibility and
qualifications to continue as the Trustee under the Indenture, any amounts
advanced by it under the Indenture, the amount, interest rate and maturity date
of certain indebtedness owing by the Issuer to it in the Trustee's commercial
capacity, the property and funds physically held by the Trustee as such, any
release or substitution of property subject to the lien of the Indenture which
has not been previously reported, any additional Series of Bonds not previously
reported and any action taken by the Trustee which materially affects the Series
1998-3 Bonds and which has not been previously reported.

         (b) Section 1.1 of the Indenture is hereby amended to restate
subsection (x) of the definition of "Eligible Investments" as follows:

             (x) any other demand, money market or time deposit obligation,
             security or investment which is acceptable to each of the Rating
             Agencies as confirmed in writing by each such Rating Agency.

         (c) For purposes hereof, references in the Indenture to the "Imputed
Principal Balance" of a Bond shall refer to its Current Principal Amount or
Notional Amount, as applicable.

         (d) The Indenture as modified and supplemented by this Series 1998-3
Supplement with respect to the Series 1998-3 Bonds (but which modification and
supplement shall not apply to any other Series of Bonds unless otherwise
specified in the related Series Supplement) is in all

                                       20

<PAGE>   24

respects ratified and confirmed, and the Indenture as so modified and
supplemented by this Series 1998-3 Supplement shall be read, taken and construed
as one and the same instrument.

         (e) For purposes of determining whether an "Event of Default" under the
Indenture has occurred, the Stated Maturity Date of each Class of Bonds shall be
deemed to be the Payment Date occurring in February, 2025.

         (f) In lieu of delivering reports to Bondholders pursuant to Section
8.7 of the Indenture, the Trustee shall deliver the reports pursuant to Section
10(g) hereof.

         Notwithstanding any provisions of the Indenture, an Event of Default
shall not occur in respect of the Class AX Bonds to the extent that amounts in
respect of interest otherwise payable thereto have been reduced pursuant to
Section 10(b) hereof or as a result of the occurrence of a Basis Risk Shortfall.

         SECTION (22)  CERTAIN MATTERS REGARDING REGISTRATION OF TRANSFER AND
            EXCHANGE OF BONDS.

         (a) Subject to Section 19(b) and upon the satisfaction of the
applicable conditions set forth below, upon surrender for registration of
transfer of any Bond at any office or agency of the Trustee maintained for such
purpose, the Trustee shall sign, countersign and shall deliver, in the name of
the designated transferee or transferees, a new Bond of a like Class and
aggregate Current Principal Balance or Class Notional Balance, as applicable,
but bearing a different number.

         (b) By acceptance of an Individual Bond Certificate, each holder of
such an Individual Bond Certificate acknowledges the restrictions on the
transfer of such Bond set forth in the applicable legends on the face thereof
and agrees that it will transfer such a Bond only as provided herein.

         (c) Any Person acquiring a ERISA Restricted Bond (i) shall be required
to provide written certification to the Trustee that such Person is not a Plan,
a Person acting on behalf of a Plan or a Person using the assets of a Plan
(each, a "Plan Investor"), or, in the case of an insurance company, is either
not a Plan Investor or is eligible for an exemption from the applicable
prohibited transaction provisions of ERISA and the Code, or (ii) shall have
delivered to the Trustee an opinion of counsel satisfactory to the Trustee and
the Issuer to the effect that the purchase and holding of such Bonds will not
constitute or result in a prohibited transaction under ERISA or the Code and
will not (a) cause the assets of the Trust Estate to be treated as "plan assets"
within the meaning of Department of Labor regulations set forth in 29 C.F.R. ss.
2510.3-101, (b) give rise to any fiduciary duty under ERISA on the part of the
Issuer, the Administrators, the Certificate Trustee, the Trustee or their
respective affiliates or (c) be treated as, or result in, a prohibited
transaction under Sections 406 or 407 of ERISA or Section 4975 of the Code.

         SECTION (23)  BOND MANAGER ON BEHALF OR ISSUER.

         Any payment required to be made or any action required to be taken by
the Issuer under the Indenture may be undertaken by the Bond Manager, on behalf
of the Issuer, to the extent

                                       21

<PAGE>   25

permitted under the Bond Management Agreement. The Trustee may rely on
instructions from the Bond Manager as being so permitted under the Bond
Management Agreement.

         SECTION (24)  INVESTMENT OF FUNDS IN THE COLLECTION ACCOUNT;
            INAPPLICABILITY OF SECTION 6.10(f).

         (a) Notwithstanding anything to the contrary in Section 8.2 of the
Indenture any investment earnings derived from the investment of amounts on
deposit in the Collection Account in Eligible Investments shall be released by
the Trustee and paid to the Bond Manager on each Payment Date as compensation
for its services rendered under the Bond Management Agreement.

         (b) Section 6.10(f) of the Indenture shall not apply to this Series
1998-3 Supplement.

         SECTION (25)  COUNTERPARTS.

         This Series 1998-3 Supplement may be executed in any number of
counterparts, each of which so executed shall be deemed to be an original, but
all of such counterparts shall together constitute but one and the same
instrument.

         SECTION (26)  GOVERNING LAW.

         AS PROVIDED IN SECTION 11.13 OF THE INDENTURE, THIS SERIES SUPPLEMENT
AND EACH SERIES 1998-3 BOND ISSUED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS
MADE AND TO BE PERFORMED THEREIN.

         SECTION (27)  NOTICES.

         (a) All demands, notices and communications hereunder shall be in
writing and shall be deemed to have been duly given if delivered personally or
by telecopy or mailed by registered mail, postage prepaid, to (a) in the case of
the Issuer, 2711 North Haskell Avenue, Suite 1000, Dallas, Texas 75204,
Attention: Andrew F. Jacobs, Telecopy No. (214) 874-2599, Confirmation No. (214)
874-2501, and (b) in the case of the Trustee, 601 Travis, Houston, Texas 77002,
Attention 10 CTH 382 Corporate Trust Department or such other address or
telecopy number as may hereafter be furnished by any of the parties hereto, in
writing, to the other parties hereto. Unless otherwise specified herein, any
notice required or permitted to be mailed to a Bondholder shall be given by
registered mail, postage prepaid, at the address of such Holder as shown. Any
notice so mailed within the time prescribed herein shall be conclusively
presumed to have been duly given, whether or not the Bondholder receives such
notice.

         (b) The Trustee shall as soon as practicable notify the Rating Agencies
in writing of the following circumstances:

         (i) any amendment to the Indenture or this supplement pursuant to
         Section 9.1 or 9.2 of the Indenture, in which case the Trustee shall
         accompany such notice with a copy of the executed supplemental
         indenture effecting such amendment;

                                       22

<PAGE>   26

         (ii)  the occurrence of an Event of Default and the action, if any,
         taken as a consequence thereof;

         (iii) the resignation or removal of the Trustee and the appointment of
         any successor Trustee;

         (iv)  the final Payment Date on the Bonds; and

         (v)   each Payment Date Statement.

                                       23

<PAGE>   27



The Issuer shall, as soon as practicable, notify the Rating Agencies of the
appointment of any successor Trustee pursuant to Section 6.10 of the Indenture
in the event that the resigning or removed Trustee is unable so to do. All
notices to the Rating Agencies under this Section 25 shall be deemed to have
been duly given if mailed by registered mail, postage prepaid, or express
courier service, to (a) in the case of Standard & Poor's Rating Services, 26
Broadway, New York, New York 10004, Attention: Mortgage Surveillance Group, and
(b) in the case of DCR, Duff & Phelps Credit Rating Co., 55 East Monroe Street,
Chicago, Illinois 60603, Attention: RMBS: Capstead 1998-3, c/o Michelle-Lyn
Russell. Failure to give any notice as required by this clause (b) of Section 25
shall not constitute a breach hereof by any party hereto.

                                    * * * * *

                                       24

<PAGE>   28

         IN WITNESS WHEREOF, the Issuer and the Trustee have caused this Series
1998-3 Supplement to be duly executed by their respective officers thereunto
duly authorized and duly attested in the case of the Issuer to be hereunto
affixed all as of the day and year first above written.

                                  CAPSTEAD SECURITIES CORPORATION IV



                                  By: /s/ WADE WALKER
                                     -----------------------------------------
                                     Wade Walker
                                     Vice President - Asset and
                                        Liability Management


Attest: /s/ DAVID BARBOUR
       -------------------------
        David Barbour
        Assistant Secretary


                                  CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,
                                  as Trustee



                                  By: /s/ PATTY LOGAN
                                     -----------------------------------------
                                     Patty Logan
                                     Vice President


















                  [SIGNATURE PAGE FOR SERIES 1998-3 SUPPLEMENT]


<PAGE>   29



STATE OF TEXAS             )
                           )       :ss.:
COUNTY OF DALLAS           )


         On the 29th day of September, 1998, before me personally came WADE
WALKER, to me known, who, being by me duly sworn, did depose and say that he
resides at Dallas, Texas; that he is the Vice President--Asset and Liability
Management of CAPSTEAD SECURITIES CORPORATION IV, the corporation that executed
the above instrument as Issuer; and that he signed his name thereto by order of
the Board of Directors of said corporation.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.



[NOTARY SEAL]                     /s/ JANA INMAN
                                  --------------------------------------------
                                   Notary Public



STATE OF TEXAS             )
                           )       :ss.:
COUNTY OF TRAVIS           )

         On the 29th day of September, 1998, before me personally came Patty
Logan, to me known, who, being by me duly sworn did depose and say that he/she
resides at Houston, Tx; that he/she is Vice President of CHASE BANK OF TEXAS,
NATIONAL ASSOCIATION, the national bank described in and that executed the above
instrument as Trustee; and that he/she signed his/her name thereto by order of
the Board of Directors of said national bank.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal the day and year in this certificate first above written.



[NOTARY SEAL]                     /s/ ROBIN DEVELLIS
                                  --------------------------------------------
                                   Notary Public


<PAGE>   30
                                   SCHEDULE A

                   List of Certificates by Series Designation

Series 1991-VI                                    Series 1994UA-10
Series 1991-VII                                   Series 1994UA-12
Series 1992-V                                     Series 1994UA-14
Series 1992-VI                                    Series 1994UA-15
Series 1992-VII                                   Series 1994UA-16
Series 1992-VIII                                  Series 1994GA-1 
Series 1992-IX                                    Series 1994GA-4 
Series 1992-X                                     Series 1994GA-7 
Series 1992-XIV                                   Series 1994GA-10
Series 1991B-10                                   Series 1994GA-11
Series 1991E-4                                    Series 1994GA-12
Series 1992PA-1                              
Series 1992PA-6 
Series 1992PA-7 
Series 1992PA-10
Series 1992PA-11 
Series 1992PA-12 
Series 1992PA-13 
Series 1992PA-14 
Series 1992PA-15 
Series 1992GA-2 
Series 1992GA-7 
Series 1992GA-12 
Series 1992GA-18
Series 1992GA-19 
Series 1992GA-27 
Series 1992GA-28 
Series 1992GA-32 
Series 1992GA-36 
Series 1992GA-37 
Series 1992GA-41 
Series 1993PA-2 
Series 1993PA-7
Series 1993PA-13 
Series 1993PA-14 
Series 1993PA-22 
Series 1993PA-23 
Series 1994UA-1 
Series 1994UA-3 
Series 1994UA-5 
Series 1994UA-6 
Series 1994UA-8 
 
<PAGE>   31
                                              Series 1998-3, Class A/Face Page 1



                                   EXHIBIT A-1

         UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE ISSUER OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY
CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME
AS IS REQUIRED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE
TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC) ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

         THIS BOND IS A REGULAR INTEREST IN A REMIC.  PRINCIPAL OF THIS BOND
IS PAYABLE IN INSTALLMENTS AS SET FORTH HEREIN. ACCORDINGLY, THE
OUTSTANDING PRINCIPAL OF THIS BOND AT ANY TIME MAY BE LESS THAN THE
AMOUNT SHOWN ON THE FACE HEREOF.

         THIS BOND IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN
RIGHT OF PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE
INDENTURE REFERRED TO ON THE REVERSE HEREOF, AND THE ISSUER IS NOT OTHERWISE
LIABLE FOR PAYMENTS ON THIS BOND.

         REGISTRATION OF ANY TRANSFER OF OWNERSHIP OF THIS BOND MAY BE MADE ONLY
IN WHOLE AND ONLY TO AN ENTITY THAT IS A "CLEARING CORPORATION" AS DEFINED IN
SECTION 8-102(3) OF THE UNIFORM COMMERCIAL CODE AS IN EFFECT IN THE STATE OF NEW
YORK.


                       CAPSTEAD SECURITIES CORPORATION IV
               COLLATERALIZED MORTGAGE OBLIGATIONS, SERIES 1998-3
                                     CLASS A
                             DUE: February 25, 2025
                         ACCRUAL DATE: September 1, 1998
                         ISSUE DATE: September 29, 1998

$_________________                                          CUSIP NO. 14067L GD0
                                                        CERTIFICATE NUMBER _____

         CAPSTEAD SECURITIES CORPORATION IV, a corporation duly organized and
existing under the laws of the State of Delaware (herein referred to as the
"Issuer"), for value received hereby promises to pay to CEDE & CO. or registered
assigns, the principal sum of _________________



<PAGE>   32
                                              Series 1998-3, Class A/Face Page 2



_______________________________ ($________________) in monthly installments on
the twenty-fifth day of each month (each a "Payment Date"), commencing in
October 1998 and ending on or before February 25, 2025 (the "Stated Maturity" of
such final installment of principal), each such installment to be in the amount
of this Bond's entitlement from amounts payable to the Class A Bonds on the
related Payment Date, and (subject as provided below) to pay interest (computed
on the basis of a 360-day year of twelve 30-day months) on each Payment Date in
an amount equal to this Bond's share of the interest payable to the Class A
Bonds on the Class Current Principal Balance thereof immediately prior to such
Payment Date, calculated over the related Interest Accrual Period at a per annum
rate equal to one month LIBOR (determined in respect of such Payment Date
pursuant to the Series 1998-3 Series Supplement) plus a Margin of 0.18 per cent
on each Payment Date prior to and on the Initial Call Date, and 0.36 per cent on
each subsequent Payment Date, but in no event greater than the lesser of (x) the
weighted average (by principal balance) of the interest rates of the
Conventional Certificates for such Payment Date less the Trustee's Fee Rate and
(y) 8.50 per cent, plus this Bond's share of any Basis Risk Shortfalls deducted
from interest otherwise payable on the Class AX Bonds on such Payment Date in
accordance with the terms of the Series 1998-3 Supplement.

         Capitalized terms used in this Bond shall bear the same meaning as
ascribed thereto in the Series 1998-3 Supplement referred to on the reverse
hereof.

         This Bond is a non-recourse obligation of the Issuer. Principal of and
interest on this Bond are due and payable out of Available Funds on each Payment
Date as described in the Series 1998-3 Supplement. No amounts shall be due or
payable from the Issuer on any Payment Date except out of Available Funds, as
described more fully on the reverse hereof.

         The principal of, and interest on, this Bond are payable in such coin
or currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts. All payments made by the Issuer
with respect to this Bond shall be applied as set forth in the Series 1998-3
Supplement. No interest shall accrue or be payable on any installment of
principal or interest which is not paid when and as due, except as provided in
the Series 1998-3 Supplement and the Indenture referred to on the reverse
hereof.

         Unless the certificate of authentication hereon has been executed by
the Trustee by manual signature, this Bond shall not be entitled to any benefit
under the Indenture, or be valid or obligatory for any purpose.



<PAGE>   33
                                              Series 1998-3, Class A/Face Page 3



         IN WITNESS WHEREOF, Capstead Securities Corporation IV has caused this
instrument to be duly executed under its corporate seal.

Dated:                                 CAPSTEAD SECURITIES CORPORATION IV
      ------------------------


                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------


Attest:



- -----------------------------------
Name:
     ------------------------------
Title:
      -----------------------------



                          CERTIFICATE OF AUTHENTICATION

This is one of the Bonds referred to in the within-mentioned Indenture.

CHASE BANK OF TEXAS, NATIONAL
ASSOCIATION, as Trustee



By:
   -----------------------------------------------------------------------------
       Authorized Signatory




<PAGE>   34
                                                    Series 1998-3 Reverse Page 1



         This Bond is one of a duly authorized issue of non-recourse Bonds of
the Issuer, designated as its Collateralized Mortgage Obligations (herein called
the "Bonds"), issued and to be issued in one or more Series, each of which
Series is issuable in one or more Classes, and this Bond is one of the Series of
Bonds designated as the Issuer's Collateralized Mortgage Obligations, Series
1998-3 (herein called the "Series 1998-3 Bonds"). The Series 1998-3 Bonds
comprise the following Classes: the Class A, Class AX and Class R Bonds, all
issued or to be issued under the Issuer's Indenture dated as of September 1,
1998, as amended (herein called the "Indenture"), to which Indenture and all
indentures supplemental thereto, including the Series 1998-3 Supplement dated as
of September 1, 1998 (the "Series 1998-3 Supplement"), between the Issuer and
Chase Bank of Texas, National Association (the "Trustee", which term includes
any successor Trustee under the Indenture), which authorized the Series 1998-3
Bonds, reference is hereby made for a statement of the respective rights
thereunder of the Issuer, the Trustee and the Holders of the Bonds of each
particular Series and Class thereof and the terms upon which the Bonds of each
Series and Class are, and are to be, authenticated and delivered.

         All terms used in this Bond which are defined in the Indenture or the
Series 1998-3 Supplement shall have the meanings assigned to them in the
Indenture or the Series 1998-3 Supplement, as applicable.

         This Bond does not purport to summarize the Indenture or the Series
1998-3 Supplement and reference should be made to the Indenture and the Series
1998-3 Supplement for the interests, rights and limitations of rights, benefits,
obligations and duties of the Holders of the Series 1998-3 Bonds thereunder, and
the rights, duties and immunities of the Trustee.

         As provided in the Indenture, the Bonds are issuable in Series and
Classes within each such Series which may vary as provided or permitted in the
Indenture. Bonds of a Series and each Class within such Series are equally and
ratably secured by the collateral pledged as security therefor to the extent
provided by the Series Supplement authorizing such Series, and the Holders of
Bonds of one Series have no rights with respect to any of the collateral pledged
as security for any other Series.

         Payments of principal or interest, if any, on the Bonds will be made on
each Payment Date, commencing in October 1998, out of Available Funds on such
Payment Date in the manner and in accordance with the priorities for the Series
1998-3 Bonds provided in the Series 1998-3 Supplement.

         Subject to the provision for allocation of losses as provided in the
Indenture and the sufficiency of Available Funds on such date, the entire unpaid
principal amount of each Class of Series 1998-3 Bonds, other than the Class AX
Bonds, which are interest-only Bonds on which no principal will be payable,
shall be due and payable, if not then previously paid, on the Stated Maturity of
such Class.




<PAGE>   35
                                                    Series 1998-3 Reverse Page 2



         The Bonds are non-recourse obligations of the Issuer, as described in
the Indenture. The Issuer shall not be liable upon the indebtedness evidenced by
the Bonds except to the extent of all of the Trust Estate which constitutes
security for the payment of the Bonds. All payments of principal of and interest
on the Bonds shall be made only from Available Funds on each Payment Date and
the Trust Estate Granted as security for the Bonds. Each Holder hereof, by its
acceptance of this Bond, agrees that it will have recourse solely against such
Trust Estate for payments on the Bonds and that (i) the Issuer shall not
otherwise be liable for any amounts payable under the Bonds and (ii) neither the
Issuer nor any of its agents, officers, directors, employees or successors or
assigns shall be liable for any amounts payable, or performance due, under this
Bond or the Indenture (except for amounts payable solely from such Trust
Estate).

         If an Event of Default shall occur and be continuing with respect to
the Series 1998-3 Bonds, the Series 1998-3 Bonds may become or be declared due
and payable in the manner and with the effect provided in the Indenture and the
Series 1998-3 Supplement. Following the acceleration of the maturity of the
Series 1998-3 Bonds, all amounts collected as proceeds of the collateral
securing the Series 1998-3 Bonds or otherwise will be applied as described in
the Series 1998-3 Supplement and the Indenture. Neither (a) the allocation of
any Net Interest Shortfall or Basis Risk Shortfall to any Class of Bonds, nor
(b) the failure to pay the full amount of any principal entitlement or Accrued
Bond Interest or any unpaid Accrued Bond Interest on any Payment Date by reason
of the insufficiency of Available Funds on such Payment Date, shall constitute
an Event of Default on any Class of the Bonds.

         An Event of Default with respect to the Bonds of any other Series
issued under the Indenture, including any failure to make any payment of
principal or interest with respect thereto when and as due, will not be an Event
of Default with respect to Series 1998-3 Bonds.

         The Series 1998-3 Bonds are not prepayable or redeemable at the option
or direction of the Issuer except that the Series 1998-3 Bonds are subject to
redemption in whole, but not in part, at the option of the Issuer on any Payment
Date on or after the earlier of: (i) the Payment Date occurring in March 2001 or
(ii) each Payment Date on or after the date on which the Class Current Principal
Balance of the Class A Bonds is less than 25% of the Original Principal Amount
thereof. Any such redemption at the option of the Issuer shall be at a price
equal to 100% of the unpaid aggregate Class Current Principal Balance of the
Series 1998-3 Bonds so redeemed, plus accrued and unpaid interest through the
last day of the month preceding the month in which such optional redemption
occurs.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Bond may be registered on the Bond Register of
the Issuer, upon surrender of this Bond for registration of transfer at the
office or agency designated by the Issuer pursuant to the Indenture, duly
endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Trustee duly executed by the Holder hereof or his attorney
duly authorized in writing, and thereupon one or more new Series 1998-3 Bonds of
the same Class, of authorized denominations and in the same aggregate initial
principal amount, will be issued to the designated transferee or transferees.




<PAGE>   36
                                                    Series 1998-3 Reverse Page 3



         Prior to the due presentment for registration of transfer of this Bond,
the Issuer, the Trustee and any agent of the Issuer or the Trustee may treat the
Person in whose name this Bond is registered (i) on any Record Date, for
purposes of making payments, and (ii) on any other date for any other purpose,
as the owner hereof, whether or not this Bond be overdue, and neither the
Issuer, the Trustee nor any such agent shall be affected by notice to the
contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Bonds under the Indenture at any
time by the Issuer with the consent of the Holders of Bonds representing
two-thirds of the Aggregate Current Principal Amount of all Bonds at the time
Outstanding, in case Outstanding Bonds of all Series are to be affected, or with
the consent of the Holders of two-thirds of the Aggregate Class Current
Principal Balance of all the Bonds at the time Outstanding of each Series to be
affected, in case one or more, but less than all, of the Series of Bonds then
Outstanding are to be affected. The Indenture also contains provisions
permitting the Holders of Bonds representing specified percentages of the
Aggregate Current Principal Amount of the Bonds of a Series at the time
Outstanding on behalf of the Holders of all the Bonds of such Series, to waive
compliance by the Issuer with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder, at the time of the giving thereof, of this Bond (or any
one or more Predecessor Bonds) shall be conclusive and binding upon such Holder
and upon all future holders of this Bond and of any Bond issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof whether
or not notation of such consent or waiver is made upon this Bond. The Indenture
also permits the Trustee to amend or waive certain terms and conditions set
forth in the Indenture without the consent of the Holders of the Bonds of any
Series issued thereunder.

         The Class A Bonds are "Book Entry Bonds" which will be available to
investors only through the book entry facilities of The Depository Trust
Company, and bond certificates for such Class of Bonds will be available only
under certain limited circumstances as described in the Indenture.

         AS PROVIDED IN THE INDENTURE, THIS BOND, THE INDENTURE AND THE SERIES
1998-3 SUPPLEMENT CREATING THE SERIES 1998-3 BONDS SHALL BE CONSTRUED IN
ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK APPLICABLE
TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.






<PAGE>   37
                                                    Series 1998-3 Reverse Page 4



                                  ABBREVIATIONS

         The following abbreviations, when used in the inscription on the face
of this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations.

TEN COM               -             as tenants in common
TEN ENT               -             as tenants by the entireties
JT TEN                -             as  joint  tenants  with right  of
                                    survivorship and not as tenants in
                                    common
UNIF GIFT MIN ACT     -             __________        Custodian __________
                                      (Cust)                     (Minor)

                                    under Uniform Gifts to Minors Act

                                    ______________________________________
                                                 (State)

                    Additional abbreviations may also be used
                          though not in the above list.

                                ________________

                   FOR VALUE RECEIVED, the undersigned hereby
                     sell(s), assign(s) and transfer(s) unto

               PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
               NUMBER OF ASSIGNEE _______________________________


               __________________________________________________

               __________________________________________________

               __________________________________________________
                   Please print or typewrite name and address
                      including postal zip code of assignee

________________________________________________________________________________
the within Bond and all rights thereunder, hereby irrevocably constituting and
appointing _____________________________________ attorney to transfer said Bond
on the books of the Issuer, with full power of substitution in the premises.

Dated: __________________               ________________________________________
                                        NOTICE: The signature to this assignment
                                        must correspond with the name as written
                                        upon the face of the within instrument
                                        in every particular, without alteration
                                        or enlargement or any change whatsoever.




<PAGE>   38
                                             Series 1998-3, Class AX/Face Page 1

                                   EXHIBIT A-2

                   THIS BOND IS A REGULAR INTEREST IN A REMIC.

         THIS BOND IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN
RIGHT OF PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE
INDENTURE REFERRED TO ON THE REVERSE HEREOF, AND THE ISSUER IS NOT OTHERWISE
LIABLE FOR PAYMENTS ON THIS BOND.

         THIS BOND SHALL NOT BE ENTITLED TO ANY PAYMENTS WITH RESPECT TO
PRINCIPAL.

                       CAPSTEAD SECURITIES CORPORATION IV
               COLLATERALIZED MORTGAGE OBLIGATIONS, SERIES 1998-3
                                    CLASS AX
                              DUE: February 25,2025
                         ACCRUAL DATE: September 1, 1998
                         ISSUE DATE: September 30, 1998


Initial Class AX Notional                                   CUSIP NO. 14067L GE8
 Balance: ______________ (_____%)                       CERTIFICATE NUMBER _____

         NEITHER THIS CLASS AX BOND NOR ANY BENEFICIAL INTEREST HEREIN MAY BE
TRANSFERRED UNLESS THE TRUSTEE HAS RECEIVED EITHER (A) A CERTIFICATE FROM SUCH
TRANSFEREE TO THE EFFECT THAT (i) SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT
PLAN, TRUST OR ACCOUNT SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME
SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR SUBJECT TO SECTION 4975 OF THE
INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), OR A GOVERNMENTAL PLAN
DEFINED IN SECTION 3(32) OF ERISA SUBJECT TO ANY FEDERAL STATE OR LOCAL LAW
WHICH IS, TO MATERIAL EXTENT, SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR
THE CODE ("SIMILAR LAW") (EACH, A "BENEFIT PLAN") AND IS NOT AN ENTITY,
INCLUDING AN INSURANCE COMPANY SEPARATE ACCOUNT OR INSURANCE COMPANY GENERAL
ACCOUNT, WHOSE UNDERLYING ASSETS INCLUDE BENEFIT PLAN ASSETS BY REASON OF A
BENEFIT PLAN'S INVESTMENT IN THE ENTITY (SUCH BENEFIT PLAN OR ENTITY, A "BENEFIT
PLAN INVESTOR") OR (ii) IF SUCH TRANSFEREE IS AN INSURANCE COMPANY, TO THE
EFFECT THAT SUCH COMPANY IS NOT A BENEFIT PLAN INVESTOR OR IS ELIGIBLE FOR AN
EXEMPTION TO THE APPLICABLE PROHIBITED TRANSACTION PROVISIONS OF ERISA, THE CODE
AND SIMILAR LAW OR (iii) IN SUCH OTHER FORM AND SUBSTANCE AS SHALL BE
SATISFACTORY TO THE TRUSTEE AND THE ISSUER, OR (B) AN OPINION OF COUNSEL
SATISFACTORY TO THE TRUSTEE AND THE ISSUER TO THE EFFECT THAT THE PURCHASE AND
HOLDING OF SUCH BOND (i) WILL NOT CONSTITUTE OR RESULT IN THE ASSETS OF THE
TRUST ESTATE BEING DEEMED TO BE "PLAN ASSETS" SUBJECT TO THE FIDUCIARY



<PAGE>   39
                                             Series 1998-3, Class AX/Face Page 2

RESPONSIBILITY PROVISIONS OF ERISA OR PROHIBITED TRANSACTIONS PROVISIONS OF
SECTION 4975 OF THE CODE OR SIMILAR LAW OR (ii) WILL NOT CONSTITUTE OR RESULT IN
A PROHIBITED TRANSACTION WITHIN THE MEANING OF SECTION 406 OR SECTION 407 OF
ERISA OR SECTION 4975 OF THE CODE OR SIMILAR LAW, AND WILL NOT SUBJECT THE
TRUSTEE, THE CERTIFICATE TRUSTEE, THE ISSUER, THE ADMINISTRATOR OR ANY SERVICER
TO ANY OBLIGATION OR LIABILITY (INCLUDING OBLIGATIONS OR LIABILITIES UNDER
ERISA, SECTION 4975 OF THE CODE OR SIMILAR LAW) IN ADDITION TO THOSE UNDERTAKEN
IN THE INDENTURE AND THE POOLING AND ADMINISTRATION AGREEMENT.

         CAPSTEAD SECURITIES CORPORATION IV, a corporation duly organized and
existing under the laws of the State of Delaware (herein referred to as the
"Issuer"), for value received hereby promises to pay (subject as provided below)
to CAPSTEAD MORTGAGE CORPORATION, or registered assigns, interest (computed on
the basis of a 360-day year of twelve 30-day months) on the Class Notional
Balance of the Class AX Bonds during the period starting on September 1, 1998
(the "Accrual Date") and ending on or before February 25, 2025 Interest will
accrue on the Class Notional Balance of this Class AX Bond during each Interest
Accrual Period on the 25th day of each month (each, a "Payment Date") at a per
annum rate equal to the excess of (x) the weighted average (by principal
balance) of the interest rates of the Conventional Certificates for the related
Payment Date less the Trustee's Fee Rate, over (y) the Class A Bond Interest
Rate for such Payment Date. The Class A Bond Interest Rate is a rate per annum
equal to one month LIBOR (determined pursuant to the Series 1998-3 Supplement)
plus a Margin equal to 0.18 per cent per annum on each Payment Date prior to and
on the Initial Call Date and 0.36 per cent per annum on each Payment Date
thereafter, but in no event greater than the lesser of (x) the weighted average
(by principal balance) of the interest rates of the Conventional Certificates
for such Payment Date less the Trustee's Fee Rate and (y) 8.50% per annum LESS
this Bond's share of any Basis Risk Shortfalls deducted from interest otherwise
payable on the Class AX Bonds on such Payment Date in accordance with the terms
of the Series 1998-3 Supplement.

         Capitalized terms used in this Bond shall bear the same meanings as
ascribed thereto in the Series 1998-3 Supplement.

         No installments of principal are payable on this Bond. This Bond is a
non-recourse obligation of the Issuer. No amount is due or payable from the
Issuer on any Payment Date except out of Available Funds, as described more
fully on the reverse hereof.

         The interest on this Bond is payable in such coin or currency of the
United States of America as at the time of payment is legal tender for payment
of public and private debts. No interest shall accrue or be payable on any
installment of interest which is not paid when and as due, except as provided in
the Series 1998-3 Supplement and the Indenture referred to on the reverse
hereof.

         The following information is provided solely for the purposes of
applying the federal income tax original issue discount ("OID") rules to this
Bond. This Bond was issued on September 29, 1998 with an initial Bond Interest
Rate of approximately 3.075736%. Assuming that the Bonds pay in accordance with
projected cash flows based on the prepayment assumption equal to 40% of the



<PAGE>   40
                                             Series 1998-3, Class AX/Face Page 3

Prepayment Model as described in the Prospectus Supplement dated as of September
28, 1998 relating to the Series 1998-3 Bonds, this Bond is issued with
approximately $11.1393677 of OID per $1,000 of initial Class Notional Amount for
the Class AX Bonds, the annual yield to maturity of the Bond for purposes of
computing the OID would be approximately 20%, and the amount of OID attributable
to the initial short accrual period is approximately $.4450912 per $1,000 of
initial Class AX Notional Amount for the Class AX Bond computed using
compounding of interest in the short period. The actual yield to maturity on the
Bond may differ from the projected yield.

         Unless the certificate of authentication hereon has been executed by
the Trustee by manual signature, this Bond shall not be entitled to any benefit
under the Indenture, or be valid or obligatory for any purpose.



<PAGE>   41
                                             Series 1998-3, Class AX/Face Page 4

         IN WITNESS WHEREOF, Capstead Securities Corporation IV has caused this
instrument to be duly executed under its corporate seal.

Dated:                                 CAPSTEAD SECURITIES CORPORATION IV
      ---------------------------


                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------

Attest:



- -----------------------------------
Name:
     ------------------------------
Title:
      -----------------------------



                          CERTIFICATE OF AUTHENTICATION

This is one of the Bonds referred to in the within-mentioned Indenture.

CHASE BANK OF TEXAS, NATIONAL
ASSOCIATION, as Trustee



By:
   -----------------------------------------------------------------------------
      Authorized Signatory




<PAGE>   42
                                                    Series 1998-3 Reverse Page 1



         This Bond is one of a duly authorized issue of non-recourse Bonds of
the Issuer, designated as its Collateralized Mortgage Obligations (herein called
the "Bonds"), issued and to be issued in one or more Series, each of which
Series is issuable in one or more Classes, and this Bond is one of the Series of
Bonds designated as the Issuer's Collateralized Mortgage Obligations, Series
1998-3 (herein called the "Series 1998-3 Bonds"). The Series 1998-3 Bonds
comprise the following Classes: the Class A, Class AX and Class R Bonds, all
issued or to be issued under the Issuer's Indenture dated as of September 1,
1998, as amended (herein called the "Indenture"), to which Indenture and all
indentures supplemental thereto, including the Series 1998-3 Supplement dated as
of September 1, 1998 (the "Series 1998-3 Supplement"), between the Issuer and
Chase Bank of Texas, National Association (the "Trustee", which term includes
any successor Trustee under the Indenture), which authorized the Series 1998-3
Bonds, reference is hereby made for a statement of the respective rights
thereunder of the Issuer, the Trustee and the Holders of the Bonds of each
particular Series and Class thereof and the terms upon which the Bonds of each
Series and Class are, and are to be, authenticated and delivered.

         All terms used in this Bond which are defined in the Indenture or the
Series 1998-3 Supplement shall have the meanings assigned to them in the
Indenture or the Series 1998-3 Supplement, as applicable.

         This Bond does not purport to summarize the Indenture or the Series
1998-3 Supplement and reference should be made to the Indenture and the Series
1998-3 Supplement for the interests, rights and limitations of rights, benefits,
obligations and duties of the Holders of the Series 1998-3 Bonds thereunder, and
the rights, duties and immunities of the Trustee.

         As provided in the Indenture, the Bonds are issuable in Series and
Classes within each such Series which may vary as provided or permitted in the
Indenture. Bonds of a Series and each Class within such Series are equally and
ratably secured by the collateral pledged as security therefor to the extent
provided by the Series Supplement authorizing such Series, and the Holders of
Bonds of one Series have no rights with respect to any of the collateral pledged
as security for any other Series.

         Payments of principal or interest, if any, on the Bonds will be made on
each Payment Date, commencing in October 1998, out of Available Funds on such
Payment Date in the manner and in accordance with the priorities for the Series
1998-3 Bonds provided in the Series 1998-3 Supplement.

         Subject to the provision for allocation of losses as provided in the
Indenture and the sufficiency of Available Funds on such date, the entire unpaid
principal amount of each Class of Series 1998-3 Bonds, other than the Class AX
Bonds, which are interest-only Bonds on which no principal will be payable,
shall be due and payable, if not then previously paid, on the Stated Maturity of
such Class.




<PAGE>   43
                                                    Series 1998-3 Reverse Page 2



         The Bonds are non-recourse obligations of the Issuer, as described in
the Indenture. The Issuer shall not be liable upon the indebtedness evidenced by
the Bonds except to the extent of all of the Trust Estate which constitutes
security for the payment of the Bonds. All payments of principal of and interest
on the Bonds shall be made only from Available Funds on each Payment Date and
the Trust Estate Granted as security for the Bonds. Each Holder hereof, by its
acceptance of this Bond, agrees that it will have recourse solely against such
Trust Estate for payments on the Bonds and that (i) the Issuer shall not
otherwise be liable for any amounts payable under the Bonds and (ii) neither the
Issuer nor any of its agents, officers, directors, employees or successors or
assigns shall be liable for any amounts payable, or performance due, under this
Bond or the Indenture (except for amounts payable solely from such Trust
Estate).

         If an Event of Default shall occur and be continuing with respect to
the Series 1998-3 Bonds, the Series 1998-3 Bonds may become or be declared due
and payable in the manner and with the effect provided in the Indenture and the
Series 1998-3 Supplement. Following the acceleration of the maturity of the
Series 1998-3 Bonds, all amounts collected as proceeds of the collateral
securing the Series 1998-3 Bonds or otherwise will be applied as described in
the Series 1998-3 Supplement and the Indenture. Neither (a) the allocation of
any Net Interest Shortfall or Basis Risk Shortfall to any Class of Bonds, nor
(b) the failure to pay the full amount of any principal entitlement or Accrued
Bond Interest or any unpaid Accrued Bond Interest on any Payment Date by reason
of the insufficiency of Available Funds on such Payment Date, shall constitute
an Event of Default on any Class of the Bonds.

         An Event of Default with respect to the Bonds of any other Series
issued under the Indenture, including any failure to make any payment of
principal or interest with respect thereto when and as due, will not be an Event
of Default with respect to Series 1998-3 Bonds.

         The Series 1998-3 Bonds are not prepayable or redeemable at the option
or direction of the Issuer except that the Series 1998-3 Bonds are subject to
redemption in whole, but not in part, at the option of the Issuer on any Payment
Date on or after the earlier of: (i) the Payment Date occurring in March 2001 or
(ii) each Payment Date on or after the date on which the Class Current Principal
Balance of the Class A Bonds is less than 25% of the Original Principal Amount
thereof. Any such redemption at the option of the Issuer shall be at a price
equal to 100% of the unpaid aggregate Class Current Principal Balance of the
Series 1998-3 Bonds so redeemed, plus accrued and unpaid interest through the
last day of the month preceding the month in which such optional redemption
occurs.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Bond may be registered on the Bond Register of
the Issuer, upon surrender of this Bond for registration of transfer at the
office or agency designated by the Issuer pursuant to the Indenture, duly
endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Trustee duly executed by the Holder hereof or his attorney
duly authorized in writing, and thereupon one or more new Series 1998-3 Bonds of
the same Class, of authorized denominations and in the same aggregate initial
principal amount, will be issued to the designated transferee or transferees.




<PAGE>   44
                                                    Series 1998-3 Reverse Page 3



         Prior to the due presentment for registration of transfer of this Bond,
the Issuer, the Trustee and any agent of the Issuer or the Trustee may treat the
Person in whose name this Bond is registered (i) on any Record Date, for
purposes of making payments, and (ii) on any other date for any other purpose,
as the owner hereof, whether or not this Bond be overdue, and neither the
Issuer, the Trustee nor any such agent shall be affected by notice to the
contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Bonds under the Indenture at any
time by the Issuer with the consent of the Holders of Bonds representing
two-thirds of the Aggregate Current Principal Amount of all Bonds at the time
Outstanding, in case Outstanding Bonds of all Series are to be affected, or with
the consent of the Holders of two-thirds of the Aggregate Class Current
Principal Balance of all the Bonds at the time Outstanding of each Series to be
affected, in case one or more, but less than all, of the Series of Bonds then
Outstanding are to be affected. The Indenture also contains provisions
permitting the Holders of Bonds representing specified percentages of the
Aggregate Current Principal Amount of the Bonds of a Series at the time
Outstanding on behalf of the Holders of all the Bonds of such Series, to waive
compliance by the Issuer with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder, at the time of the giving thereof, of this Bond (or any
one or more Predecessor Bonds) shall be conclusive and binding upon such Holder
and upon all future holders of this Bond and of any Bond issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof whether
or not notation of such consent or waiver is made upon this Bond. The Indenture
also permits the Trustee to amend or waive certain terms and conditions set
forth in the Indenture without the consent of the Holders of the Bonds of any
Series issued thereunder.

         The Class A Bonds are "Book Entry Bonds" which will be available to
investors only through the book entry facilities of The Depository Trust
Company, and bond certificates for such Class of Bonds will be available only
under certain limited circumstances as described in the Indenture.

         AS PROVIDED IN THE INDENTURE, THIS BOND, THE INDENTURE AND THE SERIES
1998-3 SUPPLEMENT CREATING THE SERIES 1998-3 BONDS SHALL BE CONSTRUED IN
ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK APPLICABLE
TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.



<PAGE>   45
                                                    Series 1998-3 Reverse Page 4



                                  ABBREVIATIONS

         The following abbreviations, when used in the inscription on the face
of this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations.

TEN COM               -                    as tenants in common
TEN ENT               -                    as tenants by the entireties
JT TEN                -                    as  joint  tenants  with right  of
                                           survivorship and not as tenants in
                                           common
UNIF GIFT MIN ACT     -                    __________     Custodian __________
                                             (Cust)                  (Minor)

                                           under Uniform Gifts to Minors Act

                                           ___________________________________

                                                        (State)
                    Additional abbreviations may also be used
                          though not in the above list.

                                ________________

                   FOR VALUE RECEIVED, the undersigned hereby
                     sell(s), assign(s) and transfer(s) unto

               PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
               NUMBER OF ASSIGNEE _______________________________


               __________________________________________________

               __________________________________________________

               __________________________________________________
                   Please print or typewrite name and address
                      including postal zip code of assignee


________________________________________________________________________________
the within Bond and all rights thereunder, hereby irrevocably constituting and
appointing _____________________________________ attorney to transfer said Bond
on the books of the Issuer, with full power of substitution in the premises.

Dated: __________________               ----------------------------------------
                                        NOTICE: The signature to this assignment
                                        must correspond with the name as written
                                        upon the face of the within instrument
                                        in every particular, without alteration
                                        or enlargement or any change whatsoever.




<PAGE>   46
                                              Series 1998-3, Class R/Face Page 1


                                   EXHIBIT A-3

         THIS BOND IS PAYABLE IN INSTALLMENTS AS SET FORTH HEREIN. ACCORDINGLY,
THE OUTSTANDING PRINCIPAL AMOUNT OF THIS BOND AT ANY TIME MAY BE LESS THAN THE
AMOUNT SHOWN ON THE FACE HEREOF.

         THIS BOND IS A NON-RECOURSE OBLIGATION OF THE ISSUER, AND IS LIMITED IN
RIGHT OF PAYMENT TO AMOUNTS AVAILABLE FROM THE TRUST ESTATE AS PROVIDED IN THE
INDENTURE REFERRED TO ON THE REVERSE HEREOF, AND THE ISSUER IS NOT OTHERWISE
LIABLE FOR PAYMENTS ON THIS BOND.

         THIS SECURITY IS SUBJECT TO RESTRICTIONS ON TRANSFER AS
DESCRIBED HEREIN.


                       CAPSTEAD SECURITIES CORPORATION IV
               COLLATERALIZED MORTGAGE OBLIGATIONS, SERIES 1998-3
                                     CLASS R
                             DUE: February 25, 2025
                         ACCRUAL DATE: September 1, 1998
                         ISSUE DATE: September 29, 1998


$_______                                                    CUSIP NO. 14067L GF5
                                                        CERTIFICATE NUMBER _____


THIS BOND IS A RESIDUAL INTEREST IN A REMIC. SO LONG AS ANY CLASS R BOND SHALL
BE OUTSTANDING, THE HOLDER HEREOF SHALL HAVE THE RIGHT TO RECEIVE CERTAIN SUMS,
AS SET FORTH HEREIN. BECAUSE THIS CLASS R BOND CONSTITUTES A REMIC RESIDUAL
INTEREST UNDER THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), SUCH
HOLDER SHALL BE REQUIRED TO REPORT, FOR FEDERAL INCOME TAX PURPOSES, THE TAXABLE
INCOME OF THE REMIC.

THIS CLASS R BOND MAY NOT BE TRANSFERRED, SOLD OR OTHERWISE DISPOSED OF UNLESS,
PRIOR TO SUCH DISPOSITION, THE PROPOSED TRANSFEREE DELIVERS TO THE TRUSTEE AN
AFFIDAVIT STATING THAT SUCH TRANSFEREE (A) IS NOT A DISQUALIFIED ORGANIZATION
(AS DEFINED IN SECTION 860E(E)(5) OF THE CODE) AND IS NOT ACQUIRING THIS CLASS R
BOND AS AN AGENT, TRUSTEE OR NOMINEE ACTING ON BEHALF OF A PERSON WHO IS A
DISQUALIFIED ORGANIZATION; (B) AGREES TO BE BOUND BY AND TO ABIDE BY THE
TRANSFER RESTRICTIONS APPLICABLE TO A CLASS R BOND; (C) IS NOT AN ENTITY THAT
WILL HOLD THE CLASS R BOND AS NOMINEE TO FACILITATE



<PAGE>   47
                                              Series 1998-3, Class R/Face Page 2


THE CLEARANCE AND SETTLEMENT OF SUCH SECURITY THROUGH ELECTRONIC BOOK-ENTRY
CHANGES IN ACCOUNTS OF PARTICIPATING ORGANIZATIONS; (D) UNDERSTANDS THAT IT MUST
TAKE INTO ACCOUNT THE TAXABLE INCOME RELATING TO THE CLASS R BOND; (E) 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 R BOND; (F)
WILL NOT TRANSFER THE CLASS R BOND TO ANY PERSON OR ENTITY THAT IT HAS REASON TO
BELIEVE HAS THE INTENTION TO IMPEDE THE ASSESSMENT OR COLLECTION OF SUCH TAXES;
(G) HAS HISTORICALLY PAID ITS DEBTS AS THEY COME DUE; (H) INTENDS TO CONTINUE TO
PAY ITS DEBTS AS THEY COME DUE IN THE FUTURE; (I) UNDERSTANDS THAT, AS THE
HOLDER OF A NON-ECONOMIC RESIDUAL BOND, IT MAY INCUR LIABILITIES IN EXCESS OF
ANY CASH FLOWS GENERATED BY THE CLASS R BOND; AND (J) INTENDS TO PAY ANY AND ALL
TAXES ASSOCIATED WITH HOLDING THE CLASS R BOND AS THEY BECOME DUE.

THIS CLASS R BOND MAY NOT BE PURCHASED BY OR TRANSFERRED TO ANY PERSON THAT IS A
"FOREIGN PERSON,"UNLESS (I) SUCH PERSON HOLDS THE CLASS R BOND 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 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 R BOND WILL NOT BE DISREGARDED FOR FEDERAL INCOME TAX
PURPOSES. THE TERM "FOREIGN PERSON" MEANS A PERSON WHO IS NOT ONE OF THE
FOLLOWING: (A) A CITIZEN OR RESIDENT OF THE UNITED STATES, (B), A CORPORATION OR
PARTNERSHIP, INCLUDING AN ENTITY TREATED AS A CORPORATION OR PARTNERSHIP FOR
U.S. FEDERAL INCOME TAX PURPOSES CREATED IN THE UNITED STATES OR ORGANIZED UNDER
THE LAWS OF THE UNITED STATES OR ANY STATE THEREOF OR THE DISTRICT OF COLUMBIA
(EXCEPT, IN THE CASE OF A PARTNERSHIP, AS OTHERWISE PROVIDED BY TREASURY
REGULATIONS), (C) AN ESTATE THE INCOME OF WHICH IS INCLUDABLE IN GROSS INCOME
FOR UNITED STATES FEDERAL INCOME TAX PURPOSES REGARDLESS OF ITS SOURCE, OR (D) A
TRUST WHOSE ADMINISTRATION IS SUBJECT TO THE PRIMARY SUPERVISION OF A UNITED
STATES COURT AND WHICH HAS ONE OR MORE UNITED STATES PERSONS WHO HAVE THE
AUTHORITY TO CONTROL ALL SUBSTANTIAL DECISIONS OF THE TRUST.

NEITHER THIS CLASS R BOND NOR ANY BENEFICIAL INTEREST HEREIN MAY BE
TRANSFERRED UNLESS THE TRUSTEE HAS RECEIVED A CERTIFICATE FROM
SUCH TRANSFEREE TO THE EFFECT THAT SUCH TRANSFEREE IS NOT AN



<PAGE>   48
                                              Series 1998-3, Class R/Face Page 3


EMPLOYEE BENEFIT PLAN, TRUST OR ACCOUNT SUBJECT TO TITLE I OF THE EMPLOYEE
RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR SUBJECT TO
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"), OR A
GOVERNMENTAL PLAN DEFINED IN SECTION 3(32) OF ERISA SUBJECT TO ANY FEDERAL STATE
OR LOCAL LAW WHICH IS, TO MATERIAL EXTENT, SIMILAR TO THE FOREGOING PROVISIONS
OF ERISA OR THE CODE (EACH, A "BENEFIT PLAN") AND IS NOT AN ENTITY, INCLUDING AN
INSURANCE COMPANY SEPARATE ACCOUNT OR GENERAL ACCOUNT, WHOSE UNDERLYING ASSETS
INCLUDE BENEFIT PLAN ASSETS BY REASON OF A BENEFIT PLAN'S INVESTMENT IN THE
ENTITY.





<PAGE>   49
                                              Series 1998-3, Class R/Face Page 4



         CAPSTEAD SECURITIES CORPORATION IV, a corporation duly organized and
existing under the laws of the State of Delaware (herein referred to as the
"Issuer"), for value received hereby promises to pay to CAPSTEAD MORTGAGE
CORPORATION or registered assigns, the principal sum of ________________________
($______) in monthly installments on the twenty-fifth day of each month (each a
"Payment Date") commencing in October 1998 and ending on or before February 25,
2025 (the "Stated Maturity" of such final installment of principal), each such
installment to be in the amount equal to this Bond's entitlement from the
amounts payable to the Class R Bonds on the related Payment Date, and (subject
as provided below) to pay interest (computed on the basis of a 360-day year of
twelve 30-day months) on each Payment Date calculated over the related Interest
Accrual Period in an amount equal to this Bond's share of the interest payable
to the Class R Bonds on the Class Current Principal Balance thereof immediately
prior to such Payment Date, calculated over the related Interest Accrual Period
at a per annum rate equal to one month LIBOR (determined in respect of such
Payment Date pursuant to the Series 1998-3 Series Supplement) plus a Margin of
0.18 per cent on each Payment Date prior to and on the Initial Call Date, and
0.36 per cent on each subsequent Payment Date, but in no event greater than the
lesser of (x) the weighted average (by principal balance) of the interest rates
of the Conventional Certificates for such Payment Date less the Trustee's Fee
Rate and (y) 8.50 per cent

         Capitalized terms used in this Bond shall bear the same meaning as
ascribed thereto in the Series 1998-3 Supplement referred to on the reverse
hereof.

         This Bond is a non-recourse obligation of the Issuer. Principal of and
interest on this Bond are due and payable out of Available Funds on each Payment
Date as described in the Series 1998-3 Supplement. No amounts shall be due or
payable from the Issuer on any Payment Date except out of Available Funds, as
described more fully on the reverse hereof.

         The principal of, and interest on, this Bond is payable in such coin or
currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts. All payments made by the Issuer
with respect to this Bond shall be applied as set forth in the Series 1998-3
Supplement and the Indenture referred to on the reverse hereof.

         Unless the certificate of authentication hereon has been executed by
the Trustee by manual signature, this Bond shall not be entitled to any benefit
under the Indenture, or be valid or obligatory for any purpose.



<PAGE>   50
                                              Series 1998-3, Class R/Face Page 5


         IN WITNESS WHEREOF, Capstead Securities Corporation IV has caused this
instrument to be duly executed under its corporate seal.

Dated:                                 CAPSTEAD SECURITIES CORPORATION IV
      --------------------------


                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------


Attest:



- -------------------------------
Name:
     --------------------------
Title:
      -------------------------



                          CERTIFICATE OF AUTHENTICATION

This is one of the Bonds referred to in the within-mentioned Indenture.

CHASE BANK OF TEXAS, NATIONAL
ASSOCIATION, as Trustee



By:
   -----------------------------------------------------------------------------
      Authorized Signatory



<PAGE>   51
                                                    Series 1998-3 Reverse Page 1



         This Bond is one of a duly authorized issue of non-recourse Bonds of
the Issuer, designated as its Collateralized Mortgage Obligations (herein called
the "Bonds"), issued and to be issued in one or more Series, each of which
Series is issuable in one or more Classes, and this Bond is one of the Series of
Bonds designated as the Issuer's Collateralized Mortgage Obligations, Series
1998-3 (herein called the "Series 1998-3 Bonds"). The Series 1998-3 Bonds
comprise the following Classes: the Class A, Class AX and Class R Bonds, all
issued or to be issued under the Issuer's Indenture dated as of September 1,
1998, as amended (herein called the "Indenture"), to which Indenture and all
indentures supplemental thereto, including the Series 1998-3 Supplement dated as
of September 1, 1998 (the "Series 1998-3 Supplement"), between the Issuer and
Chase Bank of Texas, National Association (the "Trustee", which term includes
any successor Trustee under the Indenture), which authorized the Series 1998-3
Bonds, reference is hereby made for a statement of the respective rights
thereunder of the Issuer, the Trustee and the Holders of the Bonds of each
particular Series and Class thereof and the terms upon which the Bonds of each
Series and Class are, and are to be, authenticated and delivered.

         All terms used in this Bond which are defined in the Indenture or the
Series 1998-3 Supplement shall have the meanings assigned to them in the
Indenture or the Series 1998-3 Supplement, as applicable.

         This Bond does not purport to summarize the Indenture or the Series
1998-3 Supplement and reference should be made to the Indenture and the Series
1998-3 Supplement for the interests, rights and limitations of rights, benefits,
obligations and duties of the Holders of the Series 1998-3 Bonds thereunder, and
the rights, duties and immunities of the Trustee.

         As provided in the Indenture, the Bonds are issuable in Series and
Classes within each such Series which may vary as provided or permitted in the
Indenture. Bonds of a Series and each Class within such Series are equally and
ratably secured by the collateral pledged as security therefor to the extent
provided by the Series Supplement authorizing such Series, and the Holders of
Bonds of one Series have no rights with respect to any of the collateral pledged
as security for any other Series.

         Payments of principal or interest, if any, on the Bonds will be made on
each Payment Date, commencing in October 1998, out of Available Funds on such
Payment Date in the manner and in accordance with the priorities for the Series
1998-3 Bonds provided in the Series 1998-3 Supplement.

         Subject to the provision for allocation of losses as provided in the
Indenture and the sufficiency of Available Funds on such date, the entire unpaid
principal amount of each Class of Series 1998-3 Bonds, other than the Class AX
Bonds, which are interest-only Bonds on which no principal will be payable,
shall be due and payable, if not then previously paid, on the Stated Maturity of
such Class.




<PAGE>   52
                                                    Series 1998-3 Reverse Page 2



         The Bonds are non-recourse obligations of the Issuer, as described in
the Indenture. The Issuer shall not be liable upon the indebtedness evidenced by
the Bonds except to the extent of all of the Trust Estate which constitutes
security for the payment of the Bonds. All payments of principal of and interest
on the Bonds shall be made only from Available Funds on each Payment Date and
the Trust Estate Granted as security for the Bonds. Each Holder hereof, by its
acceptance of this Bond, agrees that it will have recourse solely against such
Trust Estate for payments on the Bonds and that (i) the Issuer shall not
otherwise be liable for any amounts payable under the Bonds and (ii) neither the
Issuer nor any of its agents, officers, directors, employees or successors or
assigns shall be liable for any amounts payable, or performance due, under this
Bond or the Indenture (except for amounts payable solely from such Trust
Estate).

         If an Event of Default shall occur and be continuing with respect to
the Series 1998-3 Bonds, the Series 1998-3 Bonds may become or be declared due
and payable in the manner and with the effect provided in the Indenture and the
Series 1998-3 Supplement. Following the acceleration of the maturity of the
Series 1998-3 Bonds, all amounts collected as proceeds of the collateral
securing the Series 1998-3 Bonds or otherwise will be applied as described in
the Series 1998-3 Supplement and the Indenture. Neither (a) the allocation of
any Net Interest Shortfall or Basis Risk Shortfall to any Class of Bonds, nor
(b) the failure to pay the full amount of any principal entitlement or Accrued
Bond Interest or any unpaid Accrued Bond Interest on any Payment Date by reason
of the insufficiency of Available Funds on such Payment Date, shall constitute
an Event of Default on any Class of the Bonds.

         An Event of Default with respect to the Bonds of any other Series
issued under the Indenture, including any failure to make any payment of
principal or interest with respect thereto when and as due, will not be an Event
of Default with respect to Series 1998-3 Bonds.

         The Series 1998-3 Bonds are not prepayable or redeemable at the option
or direction of the Issuer except that the Series 1998-3 Bonds are subject to
redemption in whole, but not in part, at the option of the Issuer on any Payment
Date on or after the earlier of: (i) the Payment Date occurring in March 2001 or
(ii) each Payment Date on or after the date on which the Class Current Principal
Balance of the Class A Bonds is less than 25% of the Original Principal Amount
thereof. Any such redemption at the option of the Issuer shall be at a price
equal to 100% of the unpaid aggregate Class Current Principal Balance of the
Series 1998-3 Bonds so redeemed, plus accrued and unpaid interest through the
last day of the month preceding the month in which such optional redemption
occurs.

         As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Bond may be registered on the Bond Register of
the Issuer, upon surrender of this Bond for registration of transfer at the
office or agency designated by the Issuer pursuant to the Indenture, duly
endorsed by, or accompanied by a written instrument of transfer in form
satisfactory to the Trustee duly executed by the Holder hereof or his attorney
duly authorized in writing, and thereupon one or more new Series 1998-3 Bonds of
the same Class, of authorized denominations and in the same aggregate initial
principal amount, will be issued to the designated transferee or transferees.




<PAGE>   53
                                                    Series 1998-3 Reverse Page 3



         Prior to the due presentment for registration of transfer of this Bond,
the Issuer, the Trustee and any agent of the Issuer or the Trustee may treat the
Person in whose name this Bond is registered (i) on any Record Date, for
purposes of making payments, and (ii) on any other date for any other purpose,
as the owner hereof, whether or not this Bond be overdue, and neither the
Issuer, the Trustee nor any such agent shall be affected by notice to the
contrary.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Issuer and the rights of the Holders of the Bonds under the Indenture at any
time by the Issuer with the consent of the Holders of Bonds representing
two-thirds of the Aggregate Current Principal Amount of all Bonds at the time
Outstanding, in case Outstanding Bonds of all Series are to be affected, or with
the consent of the Holders of two-thirds of the Aggregate Class Current
Principal Balance of all the Bonds at the time Outstanding of each Series to be
affected, in case one or more, but less than all, of the Series of Bonds then
Outstanding are to be affected. The Indenture also contains provisions
permitting the Holders of Bonds representing specified percentages of the
Aggregate Current Principal Amount of the Bonds of a Series at the time
Outstanding on behalf of the Holders of all the Bonds of such Series, to waive
compliance by the Issuer with certain provisions of the Indenture and certain
past defaults under the Indenture and their consequences. Any such consent or
waiver by the Holder, at the time of the giving thereof, of this Bond (or any
one or more Predecessor Bonds) shall be conclusive and binding upon such Holder
and upon all future holders of this Bond and of any Bond issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof whether
or not notation of such consent or waiver is made upon this Bond. The Indenture
also permits the Trustee to amend or waive certain terms and conditions set
forth in the Indenture without the consent of the Holders of the Bonds of any
Series issued thereunder.

         The Class A Bonds are "Book Entry Bonds" which will be available to
investors only through the book entry facilities of The Depository Trust
Company, and bond certificates for such Class of Bonds will be available only
under certain limited circumstances as described in the Indenture.

         AS PROVIDED IN THE INDENTURE, THIS BOND, THE INDENTURE AND THE SERIES
1998-3 SUPPLEMENT CREATING THE SERIES 1998-3 BONDS SHALL BE CONSTRUED IN
ACCORDANCE WITH, AND GOVERNED BY, THE LAWS OF THE STATE OF NEW YORK APPLICABLE
TO AGREEMENTS MADE AND TO BE PERFORMED THEREIN.






<PAGE>   54
                                                    Series 1998-3 Reverse Page 4



                                  ABBREVIATIONS

         The following abbreviations, when used in the inscription on the face
of this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations.

TEN COM                 -                    as tenants in common
TEN ENT                 -                    as tenants by the entireties
JT TEN                  -                    as  joint  tenants  with right  of
                                             survivorship and not as tenants in
                                             common
UNIF GIFT MIN ACT       -                    __________    Custodian __________
                                              (Cust)                   (Minor)

                                             under Uniform Gifts to Minors Act

                                             __________________________________
                                                         (State)

                    Additional abbreviations may also be used
                          though not in the above list.

                                ________________

                   FOR VALUE RECEIVED, the undersigned hereby
                     sell(s), assign(s) and transfer(s) unto

               PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING
               NUMBER OF ASSIGNEE _______________________________



               __________________________________________________

               __________________________________________________

               __________________________________________________
                   Please print or typewrite name and address
                      including postal zip code of assignee


________________________________________________________________________________
the within Bond and all rights thereunder, hereby irrevocably constituting and
appointing _____________________________________ attorney to transfer said Bond
on the books of the Issuer, with full power of substitution in the premises.

Dated: __________________               ________________________________________
                                        NOTICE: The signature to this assignment
                                        must correspond with the name as written
                                        upon the face of the within instrument
                                        in every particular, without alteration
                                        or enlargement or any change whatsoever.




<PAGE>   55
                                    EXHIBIT B

                   FORM OF TRANSFEREE AFFIDAVIT AND AGREEMENT
                                FOR CLASS R BONDS

                                     [DATE]


STATE OF TEXAS           )
                         )     ss.:
COUNTY OF DALLAS         )


         The undersigned, _____________________, being first duly sworn,
deposes, represents and warrants:

1.   That I am a _______________________ of ___________________________, a
     corporation duly organized and existing under the laws of the State of
     ____________ (the "Owner"), record or beneficial owner of Capstead
     Securities Corporation IV Collateralized Mortgage Obligations, Series
     1998-3, Class R Bonds (the "Residual Bonds") having an Initial Principal
     Balance of $100, on behalf of which I make this affidavit and agreement.
     The Bonds were issued pursuant to the Indenture (the "Indenture") dated as
     of September 1, 1998 and the Series 1998-1 Supplement thereto (the "Series
     Supplement") dated as of September 1, 1998, each between Capstead
     Securities Corporation IV and Chase Bank of New York, National Association,
     as Trustee (the "Trustee").

2.   That the Owner (i) is and will be a "Permitted Transferee" as of
     _____________________ and (ii) is acquiring the Bonds for its own account
     or for the account of another Owner from which it has received an affidavit
     in substantially the same form as this affidavit. A "Permitted Transferee"
     is any person other than a "disqualified organization" or a Non-U.S.
     Person. For this purpose, a "disqualified organization" means any of the
     following: (i) the United States, any State or political subdivision
     thereof, any foreign government, any international organization, or any
     agency or instrumentality of any of the foregoing, (ii) any organization
     (other than a farmers' cooperative described in Section 521 of the Internal
     Revenue Code of 1986 (the "Code)) that is exempt from the tax imposed by
     Chapter 1 of the Code and not subject to the tax imposed by Section 511 of
     the Code, (iii) rural electric or telephone cooperatives described in
     Section 1381(a)(2)(C) of the Code or (iv) any other Person whose holding of
     an ownership interest in a Residual Bond may cause the related REMIC to
     incur a liability for any tax imposed under the Code that would not
     otherwise be imposed but for the transfer of an ownership interest in a
     Residual Bond to such Person. For purposes of clause (i) of the previous
     sentence, a corporation shall not be treated as an instrumentality of the
     United States or of any State or political subdivision thereof, if (i) all
     of the activities of such corporation are subject to the tax imposed by
     Chapter 1 of the Code, and (ii) a majority of the board of directors of
     such corporation is not selected by the United States or any State or
     political subdivision thereof (except that this clause (ii) shall not apply
     to the Federal Home Loan Mortgage Corporation). The terms "United States,"
     "State" and



<PAGE>   56

     "international organization" shall have the meanings set forth in Section
     7701 of the Code or successor provisions.

3.   That the Owner is aware (i) of the tax that would be imposed on the Trust
     Estate if a Residual Bond is transferred to a disqualified organization
     under Section 860E(e) of the Code and that any Owner that is a disqualified
     organization will be obligated to reimburse the Trust Estate for any such
     tax; (ii) that such tax would be on the transferor, or, if such transfer is
     through an agent (which person includes a broker, nominee or middleman) for
     a disqualified organization, on the agent; (iii) that the person otherwise
     liable for the tax shall be relieved of liability for the tax if the
     transferee furnishes to such person an affidavit that the transferee is not
     a disqualified organization and, at the time of transfer, such person does
     not have actual knowledge that the affidavit is false; and (iv) that the
     Residual Bonds may be "noneconomic residual interests" within the meaning
     of Treasury regulation section 1.860E-1(c)(2) and that the transferor of an
     ownership interest in a "noneconomic residual interest" will remain liable
     for any taxes due with respect to the income on such residual interest,
     unless no significant purpose of the transfer is to enable the transferor
     to impede the assessment or collection of tax.

4.   That the Owner is aware of the tax imposed on a "pass-through entity"
     holding the Residual Bonds if at any time during the taxable year of the
     pass-through entity a disqualified organization is the record holder of an
     interest in such entity. For this purpose, a "pass-through entity" includes
     a regulated investment company, a real estate investment trust or common
     trust fund, a partnership, trust or estate, and certain cooperatives.

5.   That the Owner is aware that the Trustee will not register the transfer of
     any Residual Bonds unless the transferee, or the transferee's agent,
     delivers to the Trustee, among other things, an affidavit in substantially
     the same form as this affidavit. The Owner expressly agrees that it will
     not consummate any such transfer if it knows or believes that any of the
     representations contained in such affidavit and agreement are false.

6.   That the Owner consents to any additional restrictions or arrangements that
     shall be deemed necessary upon advice of counsel to constitute a reasonable
     arrangement to ensure that the Residual Bonds will only be owned, directly
     or indirectly, by Owners that are Permitted Transferees.

7.   That the Owner's taxpayer identification number is _________________.

8.   That the Owner has reviewed the restrictions set forth on the face of the
     Residual Bonds and the provisions of Section 2.15 of the Indenture under
     which the Residual Bonds were issued (and, in particular, the Owner is
     aware that such Section authorizes the Trustee to deliver payments to a
     person other than the Owner and negotiate a mandatory sale by the Trustee
     in the event that the Owner holds such Residual Bonds in violation of
     Section 3); and that the Owner expressly agrees to be bound by and to
     comply with such restrictions and provisions.

9.   That the Owner is not acquiring and will not transfer the Residual Bonds in
     order to impede the assessment or collection of any tax.


                                       -2-
<PAGE>   57
10.  That the Owner anticipates that it will, so long as it holds the Residual
     Bonds, have sufficient assets to pay any taxes owed by the holder of such
     Residual Bonds.

11.  That the Owner has no present knowledge that it may become insolvent or
     subject to a bankruptcy proceeding for so long as it holds the Residual
     Bonds.

12.  That the Owner has no present knowledge or expectation that it will be
     unable to pay any United States taxes owed by it so long as any of the
     Residual Bonds remain outstanding. In this regard, the Owner hereby
     represents to and for the benefit of the Person from whom it acquired the
     Residual Bonds that the Owner intends to pay taxes associated with holding
     the Residual Bonds as they become due, fully understanding that it may
     incur tax liabilities in excess of any cash flows generated by the Residual
     Bonds.

13.  That the Owner is not acquiring the Residual Bonds with the intent to
     transfer such Bonds to any person or entity that will not have sufficient
     assets to pay any taxes owed by the holder of such Bonds, or that may
     become insolvent or subject to a bankruptcy proceeding, for so long as such
     Residual Bonds remain outstanding.

14.  That Owner will, in connection with any transfer that it makes of any of
     the Residual Bonds, obtain from its transferee the representations required
     by Section 2.15 of the Indenture under which the Residual Bonds were issued
     and will not consummate any such transfer if it knows, or knows facts that
     should lead it to believe, that any such representations are false.

15.  That Owner will, in connection with any transfer that it makes of any of
     the Residual Bonds, represent and warrant that it is not transferring the
     Residual Bonds to impede the assessment or collection of any tax and that
     it has no actual knowledge that the proposed transferee: (i) has
     insufficient assets to pay any taxes owed by such transferee as holder of
     the Residual Bonds; (ii) may become insolvent or subject to a bankruptcy
     proceeding, for so long as the Residual Bonds remain outstanding; and (iii)
     is not a "Permitted Transferee."

16.  That the Owner is a United States Person.

17.  That the Owner is not an employee benefit plan subject to the Employee
     Retirement Income Security Act of 1974, as amended ("ERISA"), or the Code,
     nor a Person acting, directly or indirectly, on behalf of any such plan,
     and understands that registration of transfer of any Security to any such
     employee benefit plan, or to any person acting on behalf of such plan, will
     not be made unless such employee benefit plan delivers a certification of
     facts and an opinion of its counsel, addressed and satisfactory to the
     Trustee and the Issuer to the effect that such transfer will not (a) cause
     the assets of the Trust Estate to be treated as "plan assets" within the
     meaning of Department of Labor regulations set forth in 29
     C.F.R.ss.2510.3-101, (b) give rise to any fiduciary duty under ERISA on the
     part of the Issuer or the Trustee, or (c) be treated as, or result in, a
     prohibited transaction under Section 406 or 407 of ERISA or Section 4975 of
     the Code.


                                       -3-
<PAGE>   58
         IN WITNESS WHEREOF, the __________________ has caused this instrument
to be executed on its behalf, by the undersigned officer this ______ day of
______________, _____.


                                       [OWNER]



                                       By:
                                          --------------------------------------
                                       Name:
                                            ------------------------------------
                                       Title:
                                             -----------------------------------



         Personally appeared before me the above-named ___________________,
known or proved to me to be the same person who executed the foregoing
instrument and to be a ________________ of the Owner, and acknowledged to me
that he executed the same as his free act and deed and the free act and deed of
the Owner.

         Subscribed and sworn before me this _____ day of _______________,
______.


                                       -----------------------------------------
                                                    NOTARY PUBLIC

                                       COUNTY OF 
                                                 --------------
                                       STATE OF  
                                                ---------------


                                       My Commission expires:
                                                             -------------------


                                       -4-
<PAGE>   59
                                    EXHIBIT C

                         FORM OF TRANSFEROR CERTIFICATE
                                (RESIDUAL BONDS)


                                     [DATE]


Capstead Securities Corporation IV
2711 N. Haskell, Suite 1000
Dallas, Texas  75204

Chase Bank of Texas, National Association
601 Travis
Houston, Texas  77002

                       Capstead Securities Corporation IV
               Collateralized Mortgage Obligations, Series 1998-3

Dear Sirs:

     This letter is delivered to you in connection with the sale by
_____________________ (the "Transferor") to ____________________________________
(the "Purchaser") of the Collateralized Mortgage Obligations, Series 1998-3,
Class R Bonds (the "Residual Bonds"), issued pursuant to the Indenture (the
"Indenture") and the Series 1998-3 Supplement, each dated as of September 1,
1998, and each between Capstead Securities Corporation IV, as Issuer (the
"Issuer"), and Chase Bank of Texas, National Association, as Trustee (the
"Indenture Trustee"). All terms used herein and not otherwise defined shall have
the meaning set forth in the Indenture for the Series Supplement, as applicable.

     The Transferor hereby certifies, represents and warrants to, and covenants
with, the Issuer and the Indenture Trustee that:

1.   No purpose of the Transferor relating to the sale of the Residual Bonds by
     the Transferor to the Purchaser is or will be to impede the assessment or
     collection of any tax.

2.   The Transferor understands that the Purchaser has delivered to the
     Indenture Trustee a transferee affidavit and agreement in the form attached
     to the Series Supplement as Exhibit B. The Transferor does not know or
     believe that any representation contained therein is false.

3.   The Transferor has at the time of the transfer conducted a reasonable
     investigation of the financial condition of the Purchaser as contemplated
     by Treasury Regulations Section 1.860E-1(c)(4)(i) and, as a result of that
     investigation, the Transferor has determined that the

<PAGE>   60
     Purchaser has historically paid its debts as they have become due and has
     found no significant evidence to indicate that the Purchaser will not
     continue to pay its debts as they become due in the future. The Transferor
     understands that the transfer of the Residual Bonds may not be respected
     for United States income tax purposes (and the Transferor may continue to
     be liable for United States income taxes associated therewith) unless the
     Transferor has conducted such an investigation.

4.   The Transferor has no actual knowledge that the proposed Transferee is a
     Disqualified Organization, an agent of a Disqualified Organization or a
     Non-U.S. Person.


                                       Very truly yours,


                                       -----------------------------------------
                                             (Transferor)


                                       -2-


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