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 (Date of earliest event reported) August 7, 1998



                         TRANSACTION SYSTEMS ARCHITECTS, INC.
                (Exact name of registrant as specified in its charter)



DELAWARE                             0-25346                   47-0772104
(State or other jurisdiction      (Commission                (IRS Employer
of incorporation)                 File Number)            Identification No.)



                    224 South 108th Avenue, Omaha, Nebraska 68154
                (Address of principal executive offices)   (Zip Code)



Registrant's telephone number, including area code:  (402) 334-5101




                         TRANSACTION SYSTEMS ARCHITECTS, INC.
                                       FORM 8-K


ITEM 2.        ACQUISITION OR DISPOSITION OF ASSETS.

     On August 7, 1998, Transaction Systems Architects, Inc. (the "Company") 
acquired all of the common stock of IntraNet, Inc., a Massachusetts 
corporation ("IntraNet") pursuant to an Agreement and Plan of Merger (the 
"Merger Agreement") dated April 27, 1998, as amended, among the Company, I.N. 
Acquisition Corp., a Massachusetts corporation and a wholly-owned subsidiary 
of the Company, and IntraNet.  Pursuant to the Merger Agreement, I.N. 
Acquisition Corp. was merged with and into IntraNet, with IntraNet surviving 
as a wholly-owned subsidiary of the Company.  Under the terms of the Merger 
Agreement, the Company issued 1,220,300 shares of Class A Common Stock.

     IntraNet is a provider of electronic funds transfer and payment 
processing systems for financial institutions. 

ITEM 7.   FINANCIAL STATEMENTS AND EXHIBITS.

(c)       Exhibits.

         2.11      Agreement and Plan of Merger dated April 27, 1998 among the
                   Company, I.N. Acquisition Corp. and IntraNet, as amended
                   pursuant to Amendment No. 1 thereto dated May 28, 1998,
                   Amendment No. 2 thereto dated May 29, 1998, Amendment No. 3
                   thereto dated June 26, 1998 and Amendment No. 4 thereto
                   dated July 16, 1998.


SIGNATURES

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.

                              TRANSACTION SYSTEMS ARCHITECTS, INC.


Dated:  August 19, 1998       By: /s/ Gregory J. Duman
                                  ---------------------------------
                                          Gregory J. Duman
                                      Chief Financial Officer
                                   (Principal Financial Officer)




                                    EXHIBIT INDEX




Exhibit                  Description
Number


2.11      Agreement and Plan of Merger dated April 27, 1998 among the Company,
          I.N. Acquisition Corp. and IntraNet, as amended pursuant to Amendment
          No. 1 thereto dated May 28, 1998, Amendment No. 2 thereto dated May
          29, 1998, Amendment No. 3 thereto dated June 26, 1998 and Amendment
          No. 4 thereto dated July 16, 1998.






                             AGREEMENT AND PLAN OF MERGER






                                  TABLE OF CONTENTS



ARTICLE I MERGER     . . . . . . . . . . . . . . . . . . . . . . . . . . .   -1-

ARTICLE II TERMS OF THE MERGER AND CLOSING . . . . . . . . . . . . . . . .   -2-
     Section 2.1   Terms of Merger. . . . . . . . . . . . . . . . . . . .    -2-
           2.1.1    Constituent Corporations, Surviving 
                    Corporation and Name of Surviving Corporation. . . . .   -2-
           2.1.2    The Merger.. . . . . . . . . . . . . . . . . . . . . .   -2-
           2.1.3    Effective Date.. . . . . . . . . . . . . . . . . . . .   -6-
     Section 2.2    Securityholders' Representative. . . . . . . . . . . .   -6-
     Section 2.3    Time and Place of Closing. . . . . . . . . . . . . . .   -7-
     Section 2.4    Deliveries.. . . . . . . . . . . . . . . . . . . . . .   -7-
           2.4.1    Deliveries by the Company. . . . . . . . . . . . . . .   -7-
           2.4.2    Deliveries by the Buying Parties.. . . . . . . . . . .   -8-
     Section 2.5    Tax-Free Reorganization. . . . . . . . . . . . . . . .   -9-
     Section 2.6    Announcement of Agreement. . . . . . . . . . . . . . .   -9-

ARTICLE III REPRESENTATIONS AND WARRANTIES OF THE COMPANY. . . . . . . . .   -9-
     Section 3.1    Legal Existence and Power. . . . . . . . . . . . . . .   -9-
     Section 3.2    Authorization. . . . . . . . . . . . . . . . . . . . .  -10-
     Section 3.3    Governmental Authorization.. . . . . . . . . . . . . .  -10-
     Section 3.4    Non-Contravention. . . . . . . . . . . . . . . . . . .  -10-
     Section 3.5    Capitalization.. . . . . . . . . . . . . . . . . . . .  -10-
     Section 3.6    Subsidiaries.. . . . . . . . . . . . . . . . . . . . .  -11-
     Section 3.7    Financial Statements; Absence of 
                    Undisclosed Liabilities. . . . . . . . . . . . . . . .  -11-
     Section 3.8    Receivables. . . . . . . . . . . . . . . . . . . . . .  -12-
     Section 3.9    Compliance with Law. . . . . . . . . . . . . . . . . .  -12-
     Section 3.10   No Defaults. . . . . . . . . . . . . . . . . . . . . .  -12-
     Section 3.11   Litigation.. . . . . . . . . . . . . . . . . . . . . .  -13-
     Section 3.12   Absence of Certain Changes.. . . . . . . . . . . . . .  -13-
     Section 3.13   Certain Agreements.. . . . . . . . . . . . . . . . . .  -14-
     Section 3.14   Employee Benefits. . . . . . . . . . . . . . . . . . .  -14-
     Section 3.15   Major Contracts. . . . . . . . . . . . . . . . . . . .  -15-
     Section 3.16   Tax Returns. . . . . . . . . . . . . . . . . . . . . .  -16-
     Section 3.17   Interests of Officers, Directors and Other Affiliates.  -17-
     Section 3.18   Intellectual Property. . . . . . . . . . . . . . . . .  -17-
     Section 3.19   Restrictions on Business Activities. . . . . . . . . .  -20-
     Section 3.20   Title to Properties, Absence of Liens and Encumbrances,
                    Condition of Equipment . . . . . . . . . . . . . . . .  -20-
     Section 3.21   Governmental Authorizations and Licenses.. . . . . . .  -20-
     Section 3.22   Environmental Matters. . . . . . . . . . . . . . . . .  -20-


                                     -i-



     Section 3.23   Insurance. . . . . . . . . . . . . . . . . . . . . . .  -21-
     Section 3.24   Labor Matters. . . . . . . . . . . . . . . . . . . . .  -21-
     Section 3.25   Employees. . . . . . . . . . . . . . . . . . . . . . .  -21-
     Section 3.26   Customers. . . . . . . . . . . . . . . . . . . . . . .  -22-
     Section 3.27   Company Securityholders. . . . . . . . . . . . . . . .  -22-
     Section 3.28   Truthfulness.. . . . . . . . . . . . . . . . . . . . .  -22-

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF TSA . . . . . . . . . . . . .  -22-
     Section 4.1    Corporate Existence and Power. . . . . . . . . . . . .  -22-
     Section 4.2    Corporate Authorization. . . . . . . . . . . . . . . .  -23-
     Section 4.3    Governmental Consents and Approvals. . . . . . . . . .  -23-
     Section 4.4    Non-Contravention. . . . . . . . . . . . . . . . . . .  -23-
     Section 4.5    Capitalization of TSA. . . . . . . . . . . . . . . . .  -24-
     Section 4.6    SEC Filings. . . . . . . . . . . . . . . . . . . . . .  -24-
     Section 4.7    Financial Statements.. . . . . . . . . . . . . . . . .  -24-
     Section 4.8    Absence of Certain Changes.. . . . . . . . . . . . . .  -25-
     Section 4.9    Truthfulness.. . . . . . . . . . . . . . . . . . . . .  -25-

ARTICLE V COVENANTS OF THE COMPANY . . . . . . . . . . . . . . . . . . . .  -25-
     Section 5.1    Conduct of Business. . . . . . . . . . . . . . . . . .  -25-
     Section 5.2    Access to Information. . . . . . . . . . . . . . . . .  -26-
     Section 5.3    Other Offers.. . . . . . . . . . . . . . . . . . . . .  -27-
     Section 5.4    Special Meeting. . . . . . . . . . . . . . . . . . . .  -27-
ARTICLE VI COVENANTS OF TSA. . . . . . . . . . . . . . . . . . . . . . . .  -27-


                                     -ii-



ARTICLE VII COVENANTS OF ALL PARTIES . . . . . . . . . . . . . . . . . . .  -28-
     Section 7.1    Advice of Changes. . . . . . . . . . . . . . . . . . .  -28-
     Section 7.2    Regulatory Approvals.. . . . . . . . . . . . . . . . .  -28-
     Section 7.3    Necessary Consents.. . . . . . . . . . . . . . . . . .  -28-
     Section 7.4    Actions Contrary to Stated Intent. . . . . . . . . . .  -28-
     Section 7.5    Public Announcements.. . . . . . . . . . . . . . . . .  -28-
     Section 7.6    Confidentiality. . . . . . . . . . . . . . . . . . . .  -29-

ARTICLE VIII CONDITIONS TO THE MERGER. . . . . . . . . . . . . . . . . . .  -29-
     Section 8.1    Conditions to Obligations of TSA.. . . . . . . . . . .  -29-
           8.1.1    No Actions, etc. . . . . . . . . . . . . . . . . . . .  -30-
           8.1.2    Accuracy of Representations and Warranties and 
                    Compliance with Covenants. . . . . . . . . . . . . . .  -30-
           8.1.3    No Material Adverse Change.. . . . . . . . . . . . . .  -30-
           8.1.4    Consents.. . . . . . . . . . . . . . . . . . . . . . .  -30-
           8.1.5    Stockholder Approval; Absence of Appraisal Demands.. .  -30-
           8.1.6    Options, etc.. . . . . . . . . . . . . . . . . . . . .  -30-
           8.1.7    Hart-Scott-Rodino. . . . . . . . . . . . . . . . . . .  -31-
           8.1.8    Closing Agreements.. . . . . . . . . . . . . . . . . .  -31-
           8.1.9    Tax Opinion. . . . . . . . . . . . . . . . . . . . . .  -31-
          8.1.10    Pooling Opinion. . . . . . . . . . . . . . . . . . . .  -31-
          8.1.11    Effectiveness of the Registration Statements and 
                    Prospectus Delivery. . . . . . . . . . . . . . . . . .  -31-
     Section 8.2    Conditions to Obligations of the Company.. . . . . . .  -32-
           8.2.1    No Actions, etc. . . . . . . . . . . . . . . . . . . .  -32-
           8.2.2    Accuracy of Representations and Warranties.. . . . . .  -32-
           8.2.3    No Material Adverse Change.. . . . . . . . . . . . . .  -32-
           8.2.4    Stockholder Approval . . . . . . . . . . . . . . . . .  -32-
           8.2.5    Effectiveness of the Registration Statements and
                    Prospectus Delivery. . . . . . . . . . . . . . . . . .  -32-
           8.2.6    Hart-Scott-Rodino. . . . . . . . . . . . . . . . . . .  -33-
           8.2.7    Closing Agreements.. . . . . . . . . . . . . . . . . .  -33-


                                     -iii-



ARTICLE IX TERMINATION OF AGREEMENT. . . . . . . . . . . . . . . . . . . .  -33-
     Section 9.1    Termination Prior to the Closing Date. . . . . . . . .  -33-
     Section 9.2    Termination. . . . . . . . . . . . . . . . . . . . . .  -34-
     Section 9.3    Effect of Termination. . . . . . . . . . . . . . . . .  -34-

ARTICLE X SURVIVAL OF REPRESENTATIONS AND WARRANTIES, INDEMNITY,
                    ESCROW OF SHARES . . . . . . . . . . . . . . . . . . .  -34-
     Section 10.1   Survival of Representations and Warranties, Indemnity,
                    Escrow of Shares Pending Resolution of Certain Matters. -34-
     Section 10.2   Term of Escrow.. . . . . . . . . . . . . . . . . . . .  -35-
     Section 10.3   Formula for Number of Escrowed Shares to be 
                    Returned to Parent.. . . . . . . . . . . . . . . . . .  -35-
     Section 10.4   Certification of Losses, Return of Shares to Parent and
                    Delivery of Balance to the Securityholders.. . . . . .  -35-
     Section 10.5   Survival of Representations. . . . . . . . . . . . . .  -37-
     Section 10.6   Indemnification by the Securityholders.. . . . . . . .  -37-
     Section 10.7   Securityholders' Participation in Defense 
                    Against Third Party Claims.. . . . . . . . . . . . . .  -38-
     Section 10.8   Indemnification by TSA.. . . . . . . . . . . . . . . .  -38-
     Section 10.9   TSA's Participation in Defense Against Third
                    Party Claims . . . . . . . . . . . . . . . . . . . . .  -40-

ARTICLE XI MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . .  -40-
     Section 11.1   Certain Updated Information. . . . . . . . . . . . . .  -40-
     Section 11.2   Further Assurances.. . . . . . . . . . . . . . . . . .  -41-
     Section 11.3   Fees and Expenses. . . . . . . . . . . . . . . . . . .  -41-
     Section 11.4   Notices. . . . . . . . . . . . . . . . . . . . . . . .  -41-
     Section 11.5   Governing Law. . . . . . . . . . . . . . . . . . . . .  -43-
     Section 11.6   Binding upon Successors and Assigns. . . . . . . . . .  -43-
     Section 11.7   Severability.. . . . . . . . . . . . . . . . . . . . .  -43-
     Section 11.8   Entire Agreement.. . . . . . . . . . . . . . . . . . .  -43-
     Section 11.9   Other Remedies.. . . . . . . . . . . . . . . . . . . .  -43-
     Section 11.10  Amendment and Waivers. . . . . . . . . . . . . . . . .  -43-
     Section 11.11  Construction of Agreement. . . . . . . . . . . . . . .  -44-
     Section 11.12  Absence of Third Party Beneficiary Rights. . . . . . .  -44-
     Section 11.13  Mutual Drafting. . . . . . . . . . . . . . . . . . . .  -44-
     Section 11.14  Counterparts.. . . . . . . . . . . . . . . . . . . . .  -44-


                                     -iv-



                            AGREEMENT AND PLAN OF MERGER 


This AGREEMENT AND PLAN OF MERGER (this "Agreement") is made as of the 27th 
day of April, 1998 among Transaction Systems Architects, Inc., a Delaware 
corporation ("TSA" or "Parent"), I.N. Acquisition Corp., a Massachusetts 
corporation and a wholly-owned subsidiary of Parent ("Merger Sub"; each of 
Parent and Merger Sub being sometimes referred to herein as a "Buying Party" 
and collectively as the "Buying Parties"), and IntraNet, Inc., a 
Massachusetts corporation (the "Company").

                                       RECITALS

     1.   Each of Parent and the Company desire to have Merger Sub merge with 
and into the Company (the "Merger"), all upon the terms and subject to the 
conditions set forth in this Agreement and in the Articles of Merger (as 
hereinafter defined).

     2.   The parties hereto intend that the Merger (i) be able to be 
accounted for by Parent on a "pooling of interests" basis and (ii) qualify as 
a tax-free reorganization under Section 368(a)(2)(E) of the Code (as 
hereinafter defined).

     3.   Messrs. Anthony D. Smith and Jonathan M. Edwards, who each own in 
excess of 40% of the shares of Common Stock of the Company, have agreed to 
vote all of their respective shares for the Merger.

     THEREFORE, in consideration of the foregoing and the mutual agreements 
and covenants set forth below, the parties hereto hereby agree as follows:

                                      ARTICLE I

                                        MERGER

     Upon the terms, subject to the conditions, and in reliance on the 
representations, warranties and covenants set forth herein, the Company and 
the Buying Parties agree to use their respective best efforts to cause the 
Merger to occur on the Closing Date (as defined in Section 2.3).

                                      ARTICLE II

                           TERMS OF THE MERGER AND CLOSING.




     SECTION II.1   TERMS OF MERGER.

          II.1.1    CONSTITUENT CORPORATIONS, SURVIVING CORPORATION AND NAME 
OF SURVIVING CORPORATION.  The Company and the Merger Sub are sometimes 
collectively referred to herein as the "Constituent Corporations." The 
Company shall be the surviving corporation of the Merger, and is sometimes 
referred to herein as the "Surviving Corporation."  The name of the Surviving 
Corporation shall be IntraNet, Inc.

          II.1.2    THE MERGER.

          (a)  Assets and Liabilities, etc.  The Merger shall be pursuant to the
     provisions of and with the effect provided in Sections 78 et seq. of the
     Massachusetts Business Corporation Law.  On the Effective Date (as defined
     in Section 2.1.3), the Merger Sub shall be merged with and into the
     Company, which shall continue to be governed by the laws of The
     Commonwealth of Massachusetts, and the separate corporate existence of the
     Merger Sub shall thereupon cease.  From and after the Effective Date, the
     identity, existence, purposes, powers, objects, franchises, privileges,
     rights and immunities of the Company shall continue unaffected and
     unimpaired by the Merger, and the corporate franchises, existence and
     rights of the Merger Sub shall be merged into the Company and the Company
     shall, as the Surviving Corporation, be fully vested therewith.  Moreover,
     upon the Merger becoming effective, all of the estate, property, rights,
     privileges, powers and franchises of the Constituent Corporations, and all
     their property, real, personal and mixed, and all the debts due on whatever
     account to any of them, as well as all stock subscriptions and other choses
     in action, belonging to any of them, shall be transferred to, and shall be
     vested in, the Surviving Corporation without further act or deed; but the
     Surviving Corporation shall be deemed to have assumed, and shall be liable
     for, all liabilities and obligations of each of the Constituent
     Corporations in the same manner and to the same extent as if the Surviving
     Corporation had itself incurred such liabilities and obligations.

          (b)  Charter and By-laws.  On the Effective Date, the Charter of the
     Merger Sub, as in effect immediately prior to the Effective Date, shall be
     the Charter of the Surviving Corporation, until duly amended in accordance
     with law.  As of the Effective Date, the total number of shares of stock
     which the Surviving Corporation shall have authority to issue is one
     thousand shares of Common Stock, $0.01 par value per share.  On the
     Effective Date, the By-laws of the Merger Sub, as in effect immediately
     prior to the Effective Date, shall be the By-laws of the Surviving
     Corporation until duly amended in accordance with law.


                                     -2-



          (c)  Directors and Officers.  On the Effective Date, the persons who
     are directors and officers of Merger Sub immediately prior to the Effective
     Date shall become the directors and officers, respectively, of the
     Surviving Corporation, holding the same offices in the Surviving
     Corporation as they held in Merger Sub immediately prior to the Effective
     Date together with the additional persons as indicated below, until their
     successors shall be elected and qualified in accordance with law and the
     Charter and By-laws of the Surviving Corporation.  As such, as of the
     effective time of the Merger the only directors of the Surviving
     Corporation shall be Anthony D. Smith,  Jonathan M. Edwards and Richard J.
     Condon, Jr.,  and the only officers of the Surviving Corporation shall be
     the same persons holding the same positions as in the Company immediately
     prior to the Effective Date.

          (d)  Converting Company Shares and Company Options.  Upon the
     effectiveness of the Merger, by virtue of the Merger and without any action
     on the part of the holders thereof, each of the outstanding shares of
     Common Stock of the Company (other than (i) such shares held in the
     Company's treasury or by any Subsidiary (as defined in Section 3.6) of the
     Company, (ii) such shares, if any, as may then be owned by either Buying
     Party and (iii) Dissenting Shares (as hereinafter defined); the outstanding
     shares of Common Stock of the Company excluding the shares referred to in
     clauses (i), (ii) and (iii) of this parenthetical being hereinafter
     referred to as the "Company Shares") shall be converted into and exchanged
     for the right to receive the number of shares of the Parent's Class A
     Common Stock ("TSA Common Stock") equal to the Exchange Ratio as defined
     below.  The Exchange Ratio shall equal the quotient of 1,225,000 (adjusted
     for any stock dividends, stock splits, or other recapitalization) divided
     by the sum of the total shares of the Company's Common Stock outstanding on
     the Effective Date (excluding the shares referred to in clauses (i) and
     (ii) of the immediately preceding parenthetical) and the total number of
     shares of Common Stock of the Company purchasable on the Effective Date
     under outstanding options ("Company Options") granted by the Company
     pursuant to the Company's 1988 Stock Option Plan.  Upon the effectiveness
     of the Merger, by virtue of the Merger and without any action on the part
     of the holders thereof, each of the outstanding Company Options shall be
     converted into and exchanged for the right to receive the number of shares
     of TSA Common Stock equal to (i) the number of shares of Common Stock of
     the Company purchasable on the Effective Date pursuant to such Company
     Option multiplied by the Exchange Ratio, less (ii) the quotient of the
     aggregate exercise price for the shares of Common Stock of the Company
     purchasable under such Company Option divided by the per share closing
     price of TSA Common Stock on the NASDAQ on the trading day immediately
     preceding the Closing Date ("Closing Price"), and less (iii) the quotient
     of all withholding taxes applicable to the


                                     -3-



     conversion and exchange of such Company Option divided by the Closing 
     Price.  Notwithstanding the foregoing, (a) 10% of the shares of Parent 
     Common Stock issuable in the Merger with respect to the Company Shares 
     and the Company Options outstanding on the Effective Date shall be 
     delivered into escrow and held as specified in Section 10.1 (all such 
     shares issuable pursuant to the Merger, including the Escrowed Shares as 
     defined below, being referred to herein as the "TSA Shares"; and said 
     portion of the TSA Shares subject to the escrow provisions of Article X 
     together with all shares issued in payment or distribution of any stock 
     dividend on or stock split or other recapitalization of, or in respect 
     of, any such Escrowed Shares, any securities or other property issued or 
     distributed with respect to such shares in connection with any merger, 
     consolidation or liquidation of Parent being referred to herein as the 
     "Escrowed Shares") and the Escrowed Shares shall be distributed, to the 
     persons who as of and immediately prior to the Closing (as defined in 
     Section 2.3) held Company Common Stock or Company Options, only upon 
     release from the Escrow Account as provided in Article X and subject to 
     the provisions of Article X and (b) no fractional shares of TSA Shares 
     shall be issued pursuant to the Merger, with each person otherwise 
     entitled to such a fractional share being entitled to cash, payable by 
     check of the Surviving Corporation, in an amount equal to such fraction 
     multiplied by the Closing Price.

          (e)  Exchange Mechanics for Company Shares.  As promptly as
     practicable after the Effective Date, each holder (other than the Company,
     if applicable) of any outstanding certificate or certificates theretofore
     representing Company Shares converted in the Merger as described in
     paragraph (d) above shall surrender the same to Parent for cancellation (in
     each case together with a duly executed letter of transmittal from the
     holder, or in the case of pledged Company Shares from the holder and the
     pledgee, in form reasonably acceptable to Parent and the Surviving
     Corporation) and shall be entitled upon such surrender to receive in
     exchange therefor a certificate or certificates representing the number of
     TSA Shares to which such holder is entitled pursuant to the Merger and in
     lieu of any fractional share otherwise to be so issued, cash in an amount
     equal to such fraction multiplied by the Closing Price.  Until so
     surrendered, each such outstanding certificate which, prior to the
     Effective Date, represented Company Shares shall be deemed for all
     corporate purposes to evidence ownership of the cash and number of TSA
     Shares into which the Company Shares represented thereby prior to the
     Effective Date have been converted pursuant to the Merger.  With respect to
     any certificate alleged to have been lost, stolen or destroyed, the owner
     or owners of such certificate shall be entitled to the consideration set
     forth above upon delivery to TSA of an affidavit of such owner or owners
     setting forth such allegation and an indemnity agreement to indemnify TSA
     and the Surviving Corporation, on terms reasonably satisfactory to TSA and
     the Surviving Corporation, against any claim that may be made against any
     of them on


                                     -4-



     account of the alleged loss, theft or destruction of any such
     certificate or the delivery of the payment set forth above.

          (f)  Exchange Mechanics for Company Options.  As promptly as
     practicable after the Effective Date, each holder of a Company Option on
     the Effective Date ("Optionholder") shall be issued a certificate or
     certificates representing the number of TSA Shares to which such
     Optionholder is entitled pursuant to the Merger and in lieu of any
     fractional share otherwise to be so issued, cash in an amount equal to such
     fraction multiplied by the Closing Price.

          (g)  Cancellation of Treasury Stock and Stock held by Parties.  On the
     Effective Date, any and all shares of Company Common Stock held by the
     Company or by any of its Subsidiaries or by either Buying Party shall, by
     virtue of the Merger and without any further action on the part of the
     Company, its Subsidiaries or the Buying Parties, be cancelled, retired and
     cease to exist and no payment or other distribution shall be made with
     respect thereto.

          (h)  Conversion of Merger Sub Shares.  On the Effective Date, each
     share of the $.01 par value common stock of the Merger Sub ("Merger Sub
     Common Stock") then issued and outstanding shall, by virtue of the Merger
     and without any action on the part of the holders thereof, be converted
     into one fully paid and nonassessable share of the $.01 par value common
     stock of the Surviving Corporation ("Surviving Corporation Common Stock"). 
     As promptly as practicable after the Effective Date, each holder of any
     outstanding certificate or certificates theretofore representing shares of
     Merger Sub Common Stock shall surrender the same to the Surviving
     Corporation and shall be entitled upon such surrender to receive in
     exchange therefor a certificate or certificates representing the number of
     shares of Surviving Corporation Common Stock to which such shareholder is
     entitled pursuant to the Merger.  Until so surrendered, each such
     outstanding certificate which, prior to the Effective Date, represented
     Merger Sub Common Stock shall be deemed for all corporate purposes to
     evidence ownership of the number of shares of Surviving Corporation Common
     Stock into which the shares of the Merger Sub Common Stock represented
     thereby prior to the Effective Date have been converted pursuant to the
     Merger.

          (i)  Dissenting Shares.  Notwithstanding anything to the contrary in
     this Agreement, shares of Company Common Stock outstanding immediately
     prior to the effective time of the Merger and held by a shareholder who has
     not voted in favor of the Merger or consented thereto in writing and who
     has demanded appraisal rights for such Shares of Company Common Stock in
     accordance with the provisions of Sections 85


                                     -5-



     through 98 of the Business Corporation Law of The Commonwealth of 
     Massachusetts ("Dissenting Shares") shall not be converted into the 
     right to receive Parent Shares or other consideration that may be 
     distributable in the Merger, unless such shareholder fails to perfect or 
     withdraws or otherwise loses his or her right to appraisal.  If, after 
     the Effective Date of the Merger, such holder fails to perfect or 
     withdraws or loses his or her right to appraisal, such Dissenting Shares 
     shall be treated as if they had been converted as of the Effective Date 
     into a right to receive the merger consideration provided herein with 
     respect to his or her shares of Company Common Stock, without interest 
     thereon.

          II.1.3    EFFECTIVE DATE.  On the Closing Date (as defined in 
Section 2.3), the parties hereto shall cause the Merger to be consummated by 
filing of articles of merger (the "Articles of Merger") prepared and filed 
with the Secretary of State of The Commonwealth of Massachusetts in 
accordance with Section 78 of the Massachusetts Business Corporation Law (the 
date and time of the effectiveness of such filing being the "Effective Date").

     SECTION II.2   SECURITYHOLDERS' REPRESENTATIVE.  Anthony D. Smith shall, 
by virtue of the Merger and the approval of this Agreement at the Special 
Meeting held pursuant to Section 5.4, be appointed attorney-in-fact (with 
full power of substitution) and authorized and empowered to act for and on 
behalf of any or all of the holders of the Company Shares and Company Options 
immediately prior to Merger who are entitled to receive TSA Common Stock 
hereunder (the "Securityholders") in connection with the following matters:  
the indemnity provisions of Article X as they relate to the Securityholders 
generally, the escrow provisions of Article X, the notice provisions of this 
Agreement and such other matters as are reasonably necessary for the 
consummation of the transactions contemplated hereby (the above named 
representative, as well as any subsequent representative of the 
Securityholders appointed by him or after his death or incapacity elected by 
vote of holders of a majority of the Company Shares to be converted in the 
Merger and shares of Common Stock of the Company purchasable on the Effective 
Date pursuant to Company Options to be converted in the Merger (each being 
referred to as a "Securityholders' Representative").  By his execution 
hereof, Anthony D. Smith hereby accepts such appointment and agrees to act as 
Securityholders' Representative hereunder.  The Securityholders' 
Representative shall not be liable to any Securityholder, the Buying Parties 
or the Company or any other person with respect to any action taken or 
omitted to be taken by the Securityholders' Representative under or in 
connection with this Agreement unless such action or omission results from or 
arises out of fraud, gross negligence, willful misconduct or bad faith on the 
part of the Securityholders' Representative.  Each of the Buying Parties and 
each of their respective Affiliates (as defined in Section 3.14, and 
including, after the Closing, the Company) shall be entitled to rely on such 
appointment and treat the Securityholders' Representative as the duly 
appointed attorney-in-fact of each Securityholder.  Each Securityholder who 
has not demanded appraisal rights pursuant to Section 2.1.2(i) or who 
executes the agreement required


                                     -6-



by Section 8.1.8(e), by such election to not demand appraisal rights or 
execution, confirms such appointment and authority and acknowledges and 
agrees that such appointment is irrevocable and coupled with an interest, it 
being understood that the willingness of the Buying Parties to enter into 
this Agreement is based, in part, on the appointment of a representative to 
act on behalf of the Securityholders.

     SECTION II.3   TIME AND PLACE OF CLOSING.  The closing of the Merger and 
the other transactions contemplated by this Agreement (the "Closing") shall 
take place at such location as agreed by the parties on the Business Day of 
the satisfaction or waiver of all conditions set forth in Sections 8.1 and 
8.2 hereof, or at such other time or place upon which the parties may agree 
(the day on which the Closing takes place being referred to herein as the 
"Closing Date").  Subject to such satisfaction or waiver of such conditions, 
the Company and the Merger Sub shall execute and deliver the Articles of 
Merger on or before the Closing Date, and shall cause the Articles of Merger 
to be filed in accordance with the Massachusetts Business Corporation Law on 
the Closing Date.

     SECTION II.4 DELIVERIES.

          II.4.1    DELIVERIES BY THE COMPANY.  At the Closing, the Company 
shall deliver or cause to be delivered to the Buying Parties all of the 
following:

          (a)  a copy of the Company's Charter, certified as of a recent date by
     the Secretary of State of The Commonwealth of Massachusetts;

          (b)  a certificate of good standing of the Company, issued as of a
     recent date by the Secretary of State of The Commonwealth of Massachusetts;

          (c)  a certificate of Tax good standing of the Company, issued as of a
     recent date by the Commissioner of Revenue of The Commonwealth of
     Massachusetts;

          (d)  a certificate of the clerk or an assistant clerk of the Company,
     dated the Closing Date, in form and substance reasonably satisfactory to
     Parent and Merger Sub as to (A) no amendments to the Company's Charter or
     By-laws, (B) the corporate actions (including copies of relevant votes)
     taken by the Company and its board of directors and shareholders to
     authorize the transactions contemplated hereby and (C) the incumbency and
     signatures of the officers of the Company executing this Agreement and the
     other agreements, instruments and other documents executed by or on behalf
     of the Company pursuant to this Agreement or otherwise in connection with
     the transactions contemplated hereby;


                                     -7-



          (e)  the certificate contemplated by Section 8.1.2;

          (f)  such resignation letters as the Buying Parties may request not
     later than two business days prior to the Closing Date from directors and
     officers of the Company; and

          (g)  such other instruments and documents as the Buying Parties may
     reasonably request from the Company in connection with the transactions
     contemplated hereby not later than two business days prior to the Closing
     Date.

     II.4.2    DELIVERIES BY THE BUYING PARTIES.  At the Closing, the Buying 
Parties shall deliver or cause to be delivered to the Company the following:

          (a)  copies of Parent's Charter and the Merger Sub's Charter,
     certified as of a recent date by the Secretaries of State of The State of
     Delaware and The Commonwealth of Massachusetts, respectively;

          (b)  a certificate of good standing of Parent, issued as of a recent
     date by the Secretary of State of The State of Delaware and a certificate
     of good standing of the Merger Sub, issued as of a recent date by the
     Secretary of State of The Commonwealth of Massachusetts;

          (c)  a certificate of the secretary or assistant secretary of Parent,
     dated the Closing Date, in form and substance reasonably satisfactory to
     the Company as to (A) no amendments to Parent's Charter or By-laws, (B) the
     corporate actions (including copies of relevant votes) taken by Parent to
     authorize the transactions contemplated hereby and (C) the incumbency and
     signatures of the officers of Parent executing this Agreement and the other
     agreements, instruments and other documents executed by or on behalf of
     Parent pursuant to this Agreement or otherwise in connection with the
     transactions contemplated hereby;

          (d)  a certificate of the clerk of the Merger Sub or an assistant
     clerk of the Merger Sub, dated the Closing Date, in form and substance
     reasonably satisfactory to the Company as to (A) no amendments to the
     Merger Sub's Charter or By-laws, (B) the corporate actions (including
     copies of relevant votes) taken by the Merger Sub and its board of
     directors and shareholders to authorize the transactions contemplated
     hereby and (C) the incumbency and signatures of the officers of the Merger
     Sub executing this Agreement and the other agreements, instruments and
     other documents executed by or on


                                     -8-



     behalf of the Merger Sub pursuant to this Agreement or otherwise in 
     connection with the transactions contemplated hereby;

          (e)  the certificate contemplated by Section 8.2.2; and

          (f)  such other instruments and documents as the Company may
     reasonably request from the Buying Parties in connection with the
     transactions contemplated hereby not later than two business days prior to
     the Closing Date.

     SECTION II.5   TAX-FREE REORGANIZATION.  The parties intend to adopt 
this Agreement as a tax-free plan of reorganization and to consummate the 
Merger in accordance with the provisions of Internal Revenue Code of 1986, as 
amended, (the "Code") Section 368(a)(2)(E).  The shares of TSA Common Stock 
issued in the Merger will be issued solely in exchange for the issued and 
outstanding shares of Company Common Stock and outstanding Company Options 
pursuant to this Agreement, and no other transaction other than the Merger 
represents, provides for or is intended to be an adjustment of the 
consideration paid for the Company Common Stock.  Except for cash paid in 
lieu of fractional shares or for Dissenting Shares, no consideration that 
would constitute "other property" within the meaning of Code Section 356 will 
be paid for shares of Company Common Stock and Company Options in the Merger. 
 In addition, TSA represents that it presently intends, and that at the 
Effective Date it will intend, to continue the Company's historic business or 
use a significant portion of the Company's business assets in a business.

     SECTION II.6   ANNOUNCEMENT OF AGREEMENT.  Before the opening of NASDAQ 
on April 27, 1998, the parties will publicly announce the execution and 
delivery of this Agreement.  The announcement will be in a form approved by 
TSA and the Company.

                                     ARTICLE III

                    REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to TSA as set forth below:

     SECTION III.1  LEGAL EXISTENCE AND POWER.  The Company is a corporation 
duly incorporated, validly existing and in good standing under the laws of 
the Commonwealth of Massachusetts, and has all corporate powers required to 
carry on its business as now conducted.  The Company is duly qualified to do 
business as a foreign corporation, as the case may be, and is in good 
standing in each jurisdiction where the character of the property owned or 
leased by it or the nature of its activities makes such qualification 
necessary, except for those jurisdictions


                                     -9-



where the failure to be so qualified would not, individually or in the 
aggregate, have a Material Adverse Effect on the Company.  For purposes of 
this Agreement, the term "Material Adverse Effect" means, with respect to any 
person or entity, a material adverse effect on the condition (financial or 
otherwise), business, properties, assets, liabilities (including contingent 
liabilities), results of operations or prospects of such person or entity and 
its subsidiaries taken as a whole; and the term "Material Adverse Change" 
means a change which would have a Material Adverse Effect.  The Company has 
delivered to TSA true and complete copies of its Charter and Bylaws as 
currently in effect.

     SECTION III.2  AUTHORIZATION.  The execution, delivery and performance 
by the Company of this Agreement, and the consummation by the Company of the 
transactions contemplated hereby are within the powers of the Company and 
have been or, to the extent not executed as of the date hereof, will be prior 
to Closing, duly authorized by all necessary corporate or other formal 
action. This Agreement constitutes, or upon execution will constitute a valid 
and binding agreement of the Company, enforceable against the Company in 
accordance with its terms, subject to the effect of (a) any applicable 
bankruptcy, insolvency, reorganization or other laws relating to or affecting 
creditor's rights generally and (b) general principles of equity.

     SECTION III.3  GOVERNMENTAL AUTHORIZATION.  Other than as set forth in 
8.1.7 and except for the filing of the Articles of Merger in Massachusetts, 
the execution, delivery and performance by the Company of this Agreement and 
the consummation of the transactions contemplated hereby and the continued 
operation of the business of the Company after the Closing Date require no 
action by or in respect of, or filing with, any governmental body, agency, 
official or authority.

     SECTION III.4  NON-CONTRAVENTION.  The execution, delivery and 
performance by the Company of this Agreement and the consummation by the 
Company of the transactions contemplated hereby do not and will not:

          (a)  contravene or conflict with the Charter or Bylaws of the Company;

          (b)  contravene or conflict with or constitute a violation of any
     provision of any law, regulation, judgment, injunction, order or decree
     binding upon or applicable to the Company;

          (c)  constitute a default under or give rise to a right of
     termination, cancellation or acceleration or loss of any benefit under any
     material agreement, contract or other instrument binding upon the Company
     or under any material license, franchise, permit or other similar
     authorization held by the Company; or


                                     -10-



          (d)  result in the creation or imposition of any Lien (as defined
     below) on any material asset of the Company.

     For purposes of this Agreement, the term "Lien" means, with respect to 
any asset, any mortgage, lien, pledge, charge, security interest or 
encumbrance of any kind in respect of such asset.

     SECTION III.5  CAPITALIZATION.  The authorized capital stock of the 
Company consists of 300,000 shares of Common Stock, $.01 per share par value. 
 As of the date hereof there are outstanding 122,280 shares of Common Stock 
of the Company.

     All outstanding shares of capital stock of the Company have been duly 
authorized and validly issued and are fully paid and nonassessable.  Except 
as set forth in this Section 3.5, there are outstanding (i) no shares of 
capital stock or other securities of the Company, (ii) no securities of the 
Company convertible into or exchangeable for shares of capital stock or 
securities of the Company, and (iii) no options or other rights to acquire 
securities from the Company and no obligation of the Company to issue any 
capital stock, securities or securities convertible into or exchangeable for 
capital stock or other securities of the Company except for options under the 
Company's 1988 Stock Option Plan, all of which are currently exercisable and 
do not expire before June 30, 1998, as set forth in Schedule 3.5 which is 
part of the Company's disclosure schedule consisting of one or more schedules 
with Section numbers corresponding to Sections of this Article 3  (the 
"Company Disclosure Schedule") attached hereto.  There are no outstanding 
obligations of the Company to repurchase, redeem or otherwise acquire any 
capital stock or other securities of the Company.

     SECTION III.6  SUBSIDIARIES.For purposes of this Agreement, "Subsidiary" 
means any corporation, limited liability company, partnership, joint venture 
or other person controlled by the Company.

     Except as set forth in Schedule 3.6, the Company has no Subsidiaries.

     SECTION III.7  FINANCIAL STATEMENTS; ABSENCE OF UNDISCLOSED LIABILITIES.

          (a)  The Company has furnished TSA with audited financial statements
     for the fiscal years ended June 30, 1995 through 1997 together with
     unqualified reports thereof of Arthur Andersen LLP, independent public
     accountants, and unaudited financial statements for the nine months ended
     March 31, 1998.  Collectively, all such financial statements are
     hereinafter referred to as the "Company Financial Statements."  The
     June 30, 1997 balance sheet is referred to herein as the "Company Balance
     Sheet" and,


                                     -11



     for purposes of this Agreement, the "Company Balance Sheet Date" means 
     June 30, 1997.  Each of the balance sheets included in the Company 
     Financial Statements fairly presents the financial position of the 
     Company and the statements of income included therein fairly present the 
     results of operations of the Company for the periods therein set forth, 
     and all such financial statements included in the Company Financial 
     Statements (including the related notes, where applicable) are in 
     accordance with generally accepted accounting principles consistently 
     applied during the periods involved, except as disclosed in such Company 
     Financial Statements and with no unusual business practices used to 
     increase net income or equity.  The books, records and accounts of the 
     Company, in reasonable detail, accurately and fairly reflect 
     transactions of the Company.  The Company maintains a system of internal 
     accounting controls reasonably sufficient to assure that transactions 
     are executed in accordance with management's authorization and are 
     recorded as necessary to permit preparation of financial statements in 
     accordance with generally accepted accounting principles and permit 
     access to assets only in accordance with management's authorization.

          (b)  As of the date hereof, (i) the Company has no material
     liabilities of any nature, whether accrued, absolute, contingent or
     otherwise, and whether due or to become due, which are of a nature required
     under generally accepted accounting principles to be reflected in a balance
     sheet or disclosed in the notes thereto, which are not reflected in the
     Company Balance Sheet except as fully disclosed in the notes thereto, and,
     (ii) all reserves set forth on the Company Balance Sheet including, without
     limitation, allowance for doubtful accounts were adequate in all material
     respects and (iii) there were no loss contingencies which were not in all
     material respects adequately provided for in the Company Balance Sheet or
     disclosed in the notes thereto.

     SECTION III.8  RECEIVABLES.  The receivables shown on the Company 
Balance Sheet arose in the ordinary course of business and have been 
collected or are collectible in the book amounts thereof, less an amount not 
in excess of the allowance for doubtful accounts provided for in such balance 
sheet.  The receivables of the Company arising after the date of the Company 
Balance Sheet and prior to the Closing Date arose or will arise in the 
ordinary course of business and have been collected or, to the knowledge of 
the Company, are or will be collectible in the book amounts thereof, 
consistent with the past practice of the Company, less an appropriate 
allowance for doubtful accounts.

     SECTION III.9  COMPLIANCE WITH LAW.  The Company is in compliance in all 
material respects with and has conducted its business so as to comply in all 
material respects with all laws, rules and regulations, judgments, decrees or 
orders of any court, administrative agency, commission, regulatory authority 
or other governmental authority or instrumentality, domestic or


                                     -12-



foreign (a "Governmental Authority") applicable to its operations and with 
respect to which compliance is a condition of engaging in the business 
thereof.  There are no judgments or orders, injunctions, decrees, 
stipulations or awards (whether rendered by a court or administrative agency 
or by arbitration), including any such actions relating to affirmative action 
claims or claims of discrimination, against the Company or against any of the 
property or business of the Company, which are continuing in effect and could 
reasonably be expected to have a Material Adverse Effect on the Company.

     SECTION III.10 NO DEFAULTS.  The Company is not (and no event has 
occurred with respect to the Company which with the passage of time or 
receipt of notice would cause the Company to be), (i) in violation of any 
provision of its Charter or Bylaws or other similar organizational document 
or (ii) in default or violation of any term, condition or provision of (A) 
any judgment, decree, order, injunction or stipulation applicable to the 
Company or (B) any material agreement, note, mortgage, indenture, contract, 
lease or instrument, permit, concession, franchise or license to which the 
Company is a party or by which the Company or its properties or assets may be 
bound.

     SECTION III.11 LITIGATION.  Except as described in Schedule 3.11, there 
is no action, suit, proceeding, claim or investigation pending or, to the 
knowledge of the Company, threatened, against the Company.  The Company has 
delivered to TSA complete copies of all audit response letters prepared by 
its counsel for independent public accountants in connection with the last 
three completed audits of the financial statements of the Company.

     SECTION III.12 ABSENCE OF CERTAIN CHANGES.  Except as expressly allowed 
or contemplated by this Agreement, since the Company Balance Sheet Date, the 
Company has conducted its business in the ordinary course and there has not 
occurred:

          (a)  Any Material Adverse Change with respect to the Company;

          (b)  Any amendments or changes in the Charter or Bylaws of the
     Company;

          (c)  Any redemption, repurchase or other acquisition of shares of
     capital stock of the Company, or any declaration, setting aside or payment
     of any dividend or other distribution (whether in cash, stock or property)
     with respect to the capital stock of the Company, except for cash dividends
     paid in December 1997 in accordance with the Company's Stock Restriction
     Agreement (as amended);

          (d)  Any increase in or modification of the compensation or benefits
     payable or to become payable by the Company to any of its directors,
     employees or consultants,


                                     -13



     except in the ordinary course of business consistent with past practice
     or with the written agreement of TSA;  

          (e)  Any acquisition or sale of a material amount of property or
     assets by or of the Company, except for sales to customers in the ordinary
     course of business;

          (f)  Any entry into, amendment of, relinquishment, termination or
     non-renewal by the Company of any material contract, lease transaction,
     commitment or other right or obligation other than in the ordinary course
     of business;

          (g)  Any labor dispute, other than routine individual grievances, or
     any activity or proceeding by a labor union or representative thereof to
     organize any employees of the Company; or

          (h)  Any agreement or arrangement made by the Company to take any
     action after the date hereof which, if taken prior to the date hereof,
     would have made any representation or warranty set forth in this Section
     3.12 untrue or incorrect as of the date when made.

     SECTION III.13 CERTAIN AGREEMENTS.  Neither the execution and delivery 
of this Agreement nor the consummation of the transactions contemplated 
hereby will (i) result in any payment (including, without limitation, 
severance, unemployment compensation, golden parachute, bonus or otherwise) 
becoming due to any director or employee of the Company under any Company 
Employee Plan (as defined in Section 3.14 below) or otherwise (except as 
contemplated by Section 8.1.8(b)), (ii) materially increase any benefits 
otherwise payable under any Company Employee Plan, or (iii) result in the 
acceleration of the time of payment or vesting of any such benefits.

     SECTION III.14 EMPLOYEE BENEFITS.

          (a)  The Company has set forth in Schedule 3.14 a list which
     identifies each "employee benefit plan," as defined in Section 3(3) of the
     Employee Retirement Income Security Act of 1974, as amended ("ERISA"), and
     each employment agreement, compensation agreement, bonus, commission or
     similar arrangement, and fringe benefit arrangement which is maintained,
     administered or contributed to by the Company or any Affiliate thereof (as
     defined below) and covers any employee or former employee of the Company or
     any Affiliate or under which the Company or any Affiliate has any
     liability.  Copies (or, if not in writing, detailed summaries) of such
     plans (and, it applicable, related trust agreements) and all amendments
     thereto and written interpretations thereof have


                                     -14-



     been furnished to TSA together with (to the extent existing) (x) the 
     most recent annual report (Form 5500 including, if applicable, Schedule 
     B thereto) prepared in connection with any such plan and (y) the most 
     recent actuarial valuation report prepared in connection with any such 
     plan.  Such plans are referred to collectively herein as the "Company 
     Employee Plans."  For purposes of this Agreement, with respect to any 
     party "Affiliate" means any corporation, limited liability company, 
     partnership, joint venture or other person controlling, controlled by or 
     under common control with such party.

          (b)  No Company Employee Plan constitutes a "multi employer plan" as
     defined in Section 3(37) of ERISA (a "Multi employer Plan"), no Company
     Employee Plan is maintained in connection with any trust described in
     Section 501 (c) (9) of the Code and no Company Employee Plan is subject to
     Title IV of ERISA or Section 412 of the Code.  Nothing done or omitted to
     be done and no transaction or holding of any asset under or in connection
     with any Company Employee Plan has or will make the Company, or any officer
     or director thereof, subject to any liability under Title I of ERISA.

          (c)  Each Company Employee Plan which is intended to be qualified
     under Section 401 (a) of the Code is so qualified and has been so qualified
     during the period from its adoption to date, and each trust forming a part
     thereof is exempt from tax pursuant to Section 501 (a) of the Code, subject
     only to the timely amendment of such Company Employee Plan.

          (d)  There is no contract, agreement, plan or arrangement covering any
     employee or former employee of the Company or any Affiliate that would
     obligate the Company or any Affiliate to pay any additional compensation,
     including severance pay, as a result of the consummation of the
     transactions contemplated by this Agreement or that, individually or
     collectively, could give rise to the payment by the Company of any amount
     that would not be deductible pursuant to the terms of Sections 162(a)(1) or
     280G of the Code.

          (e)  Neither the Company nor any of its Affiliates maintains or
     administers any "defined benefit plans" for the benefit of its employees. 
     Neither the Company nor its Affiliates has any projected liability in
     respect of post-retirement health, life and medical benefits for retired
     employees of the Company and its Affiliates, except under Title VI of
     ERISA.  Other than provisions of applicable law, no condition exists that
     would prevent the Company from amending or terminating any Company Employee
     Plan.

          (f)  There has been no amendment to, written interpretation or
     announcement (whether or not written) by the Company or any of its
     Affiliates relating to, or change in


                                     -15-




     employee participation or coverage under, any Company Employee Plan 
     which would materially increase the expense of maintaining such Company 
     Employee Plan above the level of the expense incurred in respect thereof 
     for the most recent fiscal year.

     SECTION III.15 MAJOR CONTRACTS.  Schedule 3.15 sets forth a list of the
following agreements and covenants to which the Company is a party or is subject
to:

          (a)  Any union contract or any employment contract or arrangement
     providing for future compensation, written or oral, with any officer,
     consultant, director or employee which is not terminable by the Company on
     30 days' notice or less without penalty or obligation to make payments
     related to such termination;

          (b)  Any plan, contract or arrangement, written or oral, providing for
     bonuses, pensions, deferred compensation, severance pay or benefits,
     retirement payments, profit sharing, or the like;

          (c)  Any joint venture contract or arrangement or any other agreement
     which has involved or is expected to involve a sharing of profits with
     other persons;

          (d)  Any royalty, service or distribution agreement or other similar
     agreement pursuant to which the Company has granted or received rights
     related to any product, group of products or territory;

          (e)  Any lease for real property;

          (f)  Any lease for personal property in which the amount of payments
     which the Company is required to make on an annual basis exceeds $25,000;

          (g)  Any material license agreement, either as licensor or licensee;

          (h)  Any contract containing covenants purporting to limit freedom of
     the Company to compete in any line of business in any geographic area; or

          (i)  Any other agreement, contract or commitment which is material to
     the Company.

     SECTION III.16 TAX RETURNS.

          (a)  All Tax returns, statements, reports and forms (including
     estimated Tax


                                     -16-



     returns and reports and information returns and reports) required to be 
     filed with any Taxing Authority (as defined below) with respect to any 
     Taxable period ending on or before the Closing Date by or on behalf of 
     the Company (collectively, the "Tax Returns"), have been or will be 
     filed when due (including any extensions of such due date).

          (b)  The Company has timely paid, withheld or made provision on their
     books for all Taxes due and payable with respect to all fiscal periods
     ending on or prior to the Closing Date and for the portion ending on the
     Closing Date of any fiscal period beginning prior to the Closing Date and
     ending after the Closing Date.

          (c)  The Company has not granted any extension or waiver of the
     limitation period applicable to any Tax Returns.

          (d)  There is no claim, audit, action, suit, proceeding, or
     investigation now pending or, to the best knowledge of the Company,
     threatened in writing against or with respect to the Company in respect of
     any Tax or assessment.

          (e)  There are no liens for Taxes upon the assets of the Company
     except liens for current Taxes not yet due.

          (f)  The Company will not be required to include any adjustment in
     Taxable income for any Tax period (or portion thereof) ending after the
     Closing Date pursuant to Section 481 (c) of the Code (or any similar
     provision of the Tax laws of any jurisdiction) as a result of a change in
     method of accounting for any Tax period (or portion thereof) ending on or
     before the Closing Date or pursuant to the provisions of any agreement
     entered into with any Taxing Authority with regard to the Tax liability of
     the Company for any Tax period (or portion thereof) ending on or before the
     Closing Date.

          (g)  For the purposes of this Agreement, "Tax" (and, with correlative
     meaning, "Taxes" and "Taxable") means, for any entity, (i) any net income,
     alternative or add-on minimum tax, gross income, gross receipts, sales,
     use, ad valorem, value added, transfer, franchise, profits, license,
     withholding on amounts paid to or by such entity, payroll, employment,
     excise, severance, stamp, occupation, property, environmental or windfall
     profit tax, or other tax, together with any interest or any penalty,
     addition to tax or additional amount imposed by any governmental authority
     (a "Taxing Authority") responsible for the imposition of any such tax
     (domestic or foreign), (ii) liability of such entity for the payment of any
     amounts of the type described in (i) as a result of being a member of an
     affiliated, consolidated, combined or unitary group for any Taxable period


                                     -17



     and (iii) liability of such entity for the payment of any amounts of the
     type described in (i) or (ii) as a result of any express or implied
     obligation to indemnify any other person.

     SECTION III.17 INTERESTS OF OFFICERS, DIRECTORS AND OTHER AFFILIATES. 
Schedule 3.17 sets forth a description of any interest held, directly or
indirectly, by any officer, director or other affiliate of the Company in any
property, real or personal, tangible or intangible, used in or pertaining to the
business of the Company, including any interest in the Intellectual Property
rights.

     SECTION III.18 INTELLECTUAL PROPERTY.

          (a)  The Company owns or has the right to use pursuant to license,
     sublicense, agreement, or permission all Intellectual Property (as defined
     below) necessary for the operation of the business of the Company as
     presently conducted.  Each item of Intellectual Property owned or used by
     the Company immediately prior to the Closing hereunder will be owned or
     available for use by the Company on identical terms and conditions
     immediately subsequent to the Closing hereunder.  The Company has taken all
     reasonably necessary action to protect each item of Intellectual Property
     that it owns or uses.

          (b)  To the knowledge of  the Company, the Company has not interfered
     with, infringed upon, misappropriated, or otherwise come into conflict with
     any Intellectual Property rights of third parties, and the Company has not
     received any charge, complaint, claim, or notice alleging any such
     interference, infringement, misappropriation, or violation.  To the
     knowledge of  the Company, no third party has interfered with, infringed
     upon, misappropriated, or otherwise come into conflict with any
     Intellectual Property rights of the Company.

          (c)  Set forth on Schedule 3.18 is a list of each patent, copyright,
     trademark, or registration which has been issued to the Company with
     respect to any of its Intellectual Property and each pending patent,
     copyright or trademark application or application for registration which
     the Company has made with respect to any of its Intellectual Property, and,
     with the exception of grants made to customers under terms of the Company's
     standard form of end-user license agreement (or an agreement substantially
     similar thereto), a list of each license, agreement, or other permission
     which the Company has granted to any third party with respect to any of its
     Intellectual Property (together with any exceptions).  With respect to each
     item of Intellectual Property that the Company owns:
               (i)  the Company possesses all right, title, and interest in and
     to the


                                     -18-



     item;

               (ii) the item is not subject to any outstanding judgment, order,
     decree, stipulation, injunction, or charge;

               (iii) no charge, complaint, action, suit, proceeding, hearing, 
     investigation, claim, or demand is pending or, to the knowledge of the 
     Company, is threatened which challenges the legality, validity, 
     enforceability, use, or ownership of the item; and

               (iv) it has never agreed to indemnify any person or entity for or
     against any interference, infringement, misappropriation, or other conflict
     with respect to the item, except as set forth in standard end-user license
     agreement (or an agreement substantially similar thereto).

          (d)  Set forth in Schedule 3.18 is each item of Intellectual Property
     that any third party owns and that the Company uses pursuant to license,
     sublicense, agreement, or permission, except for standard software packages
     readily available from retail computer and software outlets.  With respect
     to each such item of used Intellectual Property:

               (i)  the license, sublicense, agreement or permission covering
     the item is legal, valid, binding, enforceable, and in full force and
     effect;

               (ii) the license, sublicense, agreement, or permission will
     continue to be legal, valid, binding, enforceable, and in full force and
     effect on identical terms immediately following the Closing;

               (iii) to the knowledge of  the Company, no party to the 
     license, sublicense, agreement, or permission is in breach or default, 
     and no event has occurred which with notice or lapse of time would 
     constitute a breach or default or permit termination, modification, or 
     acceleration thereunder;

               (iv) no party to the license, sublicense, agreement, or
     permission has repudiated any provision thereof;

               (v)  with respect to each sublicense, the representations and
     warranties set forth in subsections (i) through (iv) above are true and
     correct with respect to the underlying license;


                                     -19-



               (vi) the underlying item of Intellectual Property is not subject
     to any outstanding judgment, order, decree, stipulation, injunction, or
     charge; and

               (vii) no charge, complaint, action, suit, proceeding, hearing, 
     investigation, claim, or demand is pending or, to the knowledge of the 
     Company, is threatened which challenges the legality, validity, or 
     enforceability of the underlying item of Intellectual Property.

          (e)  For the purposes of this Agreement, Intellectual Property means:
     (a) all inventions (whether patentable or unpatentable and whether or not
     reduced to practice), all improvements thereto, and all patents, patent
     applications, and patent disclosures, together with all reissuances,
     continuations, continuations-in-part, revisions, extensions, and
     reexaminations thereof, (b) all trademarks, service marks, trade dress,
     logos, trade names, and corporate names, together with all translations,
     adaptations, derivations, and combinations thereof and including all
     goodwill associated therewith, and all applications, registrations, and
     renewals in connection therewith, (c) all copyrightable works, all
     copyrights, and all applications, registrations, and renewals in connection
     therewith, (d) all trade secrets and confidential business information
     (including ideas, research and development, know-how, formulas,
     compositions, manufacturing and production processes and techniques,
     technical data, designs, drawings, specifications, customer and supplier
     lists, pricing and cost information, and business and marketing plans and
     proposals), (e) all computer software whether owned or licensed from a
     third party (including data and related documentation), (f) all other
     proprietary rights, and (g) all copies and tangible embodiments thereof (in
     whatever form or medium).

     SECTION III.19 RESTRICTIONS ON BUSINESS ACTIVITIES.  There is no agreement,
judgment, injunction, order or decree binding upon the Company which has or
could reasonably be expected to have a Material Adverse Effect on the Company.

     SECTION III.20 TITLE TO PROPERTIES, ABSENCE OF LIENS AND ENCUMBRANCES,
CONDITION OF EQUIPMENT.

          (a)  Schedule 3.20 sets forth a true and complete list of all real
     property leased by the Company and the aggregate annual rental or other fee
     payable under any such lease.

          (b)  The Company owns or has valid leasehold interests in all of its
     tangible properties and assets, real, personal and mixed, used in its
     business, free and clear of any Liens, except for such imperfections of
     title and encumbrances, if any, which are not


                                     -20-



     substantial in character, amount or extent, and which do not materially 
     detract from the value, or interfere with the present use, of the 
     property subject thereto or affected thereby.

          (c)  The equipment owned or leased by the Company is, taken as a
     whole, (i) adequate for the conduct of the business of the Company
     consistent with past practice, (ii) suitable for the uses to which it is
     currently employed, (iii) in good operating condition, normal wear and tear
     excepted, (iv) regularly and properly maintained, (v) not obsolete,
     dangerous or in need of renewal or replacement, except for renewal or
     replacement in the ordinary course of business, and (vi) free from any
     known defects.

          (d)  The Company owns no real property.

     SECTION III.21 GOVERNMENTAL AUTHORIZATIONS AND LICENSES.  The Company 
holds all material licenses, authorizations, consents, approvals, permits 
(including all necessary environmental permits), concessions, certificates 
and other franchises of any governmental entity required to operate its 
business (collectively, the "Governmental Authorizations"), the absence of 
any which would have a Material Adverse Effect.

     SECTION III.22 ENVIRONMENTAL MATTERS.

          (a)  Except as set forth on Schedule 3.22, the Company has not
     received any written notice, demand, citation, summons, complaint or order
     or any notice of any penalty, Lien or assessment, and, to the Company's
     knowledge,  no investigation or review is pending by any governmental
     entity, with respect to any material (i) alleged violation by the Company
     of any Environmental Law (as defined in subsection (b) below), or (ii)
     alleged failure by the Company to have any environmental permit,
     certificate, license, approval, registration or authorization required in
     connection with the conduct of its business.

          (b)  For the purposes of this Section 3.22, "Environmental Laws" shall
     mean any and all foreign and domestic federal, state and local laws
     (including case law), regulations, ordinances, rules, judgments, orders,
     decrees, codes, plans, injunctions, permits, concessions, grants,
     franchises, licenses, agreements and governmental restrictions relating to
     human health, the environment or to emissions, discharges or releases of
     pollutants, contaminants, hazardous substances or wastes into the
     environment.

     SECTION III.23 INSURANCE.  Schedule 3.23 lists all insurance policies and
fidelity bonds covering the assets, business, equipment, properties, operations,
employees, officers and directors


                                     -21-



of the Company.  Copies of all such policies have been delivered to TSA prior 
to the date hereof.  There is no claim by the Company pending under any of 
such policies or bonds as to which coverage has been questioned, denied or 
disputed by the underwriters of such policies or bonds.  All premiums payable 
under all such policies and bonds have been paid and the Company is otherwise 
in full compliance with the terms of such policies and bonds (or other 
policies and bonds providing substantially similar insurance coverage).  
There is no threatened termination of or material premium increase with 
respect to any of such policies known to the Company.

     SECTION III.24 LABOR MATTERS.  The Company is in compliance in all 
material respects with all currently applicable laws and regulations 
respecting employment, discrimination in employment, verification of 
immigration status, terms and conditions of employment and wages and hours 
and occupational safety and health and employment practices, and is not 
engaged in any unfair labor practice.  The Company has not received any 
notice from any Governmental Authority, and there has not been asserted 
before any Governmental Authority, any claim, action or proceeding to which 
the Company is a party or involving the Company, and there is neither pending 
nor, to the Company's knowledge, threatened any investigation or hearing 
concerning the Company arising out of or based upon any such laws, 
regulations or practices.  The Company is not a party to a collective 
bargaining agreement.

     SECTION III.25 EMPLOYEES.  Schedule 3.25 lists each salaried employee 
and sales representative of the Company, his or her current position, salary, 
commission and general compensation arrangement.  Except for agreements 
listed in Schedule 3.25, complete and accurate copies of which have been 
delivered to TSA, the Company is not a party to any effective consulting or 
employment agreements with individual consultants or employees (including 
officers and directors).

     SECTION III.26 CUSTOMERS.  Schedule 3.26 sets forth a list of customers 
of the Company.  Except as set forth in Schedule 3.26, the Company has no 
reason to believe that any of such customers intends to terminate its 
business relationship with the Company.

     SECTION III.27 COMPANY SECURITYHOLDERS.  Schedule 3.27 sets forth the 
name of each Company shareholder and each Optionholder, the number of shares 
of Common Stock of the Company owned by each Company shareholder and the 
number of shares purchasable pursuant to the Company Options held by each 
Optionholder and the jurisdiction in which each shareholder of the Company 
and each Optionholder resides.  Each shareholder of the Company and each 
Optionholder has received, or prior to the date of the Special Meeting held 
pursuant to Section 5.4 will receive, such documents, materials and 
information as the Company deems necessary or appropriate for evaluation of 
the TSA Common Stock and was provided the opportunity to ask questions of and 
receive answers from TSA, or its representatives, concerning


                                     -22-



the operations, business and financial condition of TSA.  The TSA Common 
Stock was not offered to any shareholder of the Company or any Optionholder 
by any means of general solicitation or general advertising. Each shareholder 
of the Company and each Optionholder has such knowledge and experience in 
financial and business matters that each such shareholder or Optionholder is 
capable of evaluating the merits and risks of an investment in the TSA Common 
Stock.

     SECTION III.28 TRUTHFULNESS.  No representation or warranty of the 
Company herein and no document or certificate furnished or to be furnished by 
or on behalf of the Company or its counsel, accountants or other agents 
pursuant hereto or in connection with the transactions contemplated hereby 
contains or will contain any untrue statement of a material fact or omits or 
will omit to state a material fact necessary in order to make the statements 
contained herein or therein not misleading.

                                      ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES OF TSA

     TSA represents and warrants to the Company as set forth below:

     SECTION IV.1   CORPORATE EXISTENCE AND POWER.  TSA is a corporation duly 
incorporated, validly existing and in good standing under the laws of the 
State of Delaware.  TSA has all corporate powers required to carry on its 
business as now conducted.  TSA is duly qualified to do business as a foreign 
corporation and is in good standing in each jurisdiction where the character 
of the property owned or leased by it or the nature of its activities makes 
such qualification necessary, except for those jurisdictions where the 
failure to be so qualified would not, individually or in the aggregate, have 
a Material Adverse Effect on TSA.

     SECTION IV.2   CORPORATE AUTHORIZATION.  The execution, delivery and 
performance by TSA of this Agreement and the Escrow Agreement and the 
consummation by TSA of the transactions contemplated hereby are within its 
corporate powers and have been and, to the extent not executed as of the date 
hereof, will be prior to execution, duly authorized by all necessary 
corporate action.  This Agreement upon execution will constitute a valid and 
binding agreement of TSA, enforceable against TSA in accordance with their 
respective terms.

     SECTION IV.3   GOVERNMENTAL CONSENTS AND APPROVALS.  Except as set forth 
in Section 8.1.7 and except for the filing of the Articles of Merger in 
Massachusetts, the execution, delivery and performance by TSA of this 
Agreement and the consummation of the Merger by TSA,


                                     -23-



require no action by or in respect of, or filing with, any governmental body, 
agency, official or authority other than:

          (a)  compliance with any applicable requirements of NASDAQ, the
     Securities Exchange Act of 1934, as amended, and the rules and regulations
     promulgated thereunder (the "Exchange Act");

          (b)  compliance with any applicable requirements of the Securities Act
     of 1933 as amended ("Securities Act") and the rules and regulations
     promulgated thereunder;

          (c)  compliance with any applicable state securities or "blue sky"
     laws.

     SECTION IV.4   NON-CONTRAVENTION.  The execution, delivery and 
performance by TSA of this Agreement and the consummation by TSA of the 
transactions contemplated hereby do not and will not:

          (a)  contravene or conflict with the Restated Articles of
     Incorporation or Bylaws of TSA;

          (b)  contravene or conflict with or constitute a violation of any
     provision of any law, regulation, judgment, injunction, order or decree
     binding upon or applicable to TSA or any other Subsidiary of TSA;

          (c)  constitute a default under or give rise to a right of
     termination, cancellation, acceleration or loss of any material benefit
     under any agreement, contract or other instrument binding upon TSA or any
     other Subsidiary of TSA or any license, franchise, permit or other similar
     authorization held by TSA or any such Subsidiary; or

          (d)  result in the creation or imposition of any Lien on any material
     asset of TSA or any Subsidiary of TSA.

     SECTION IV.5   CAPITALIZATION OF TSA.

          (a)  The authorized capital stock of TSA consists of 50,000,000 shares
     of Class A Common Stock, par value $0.005 per share, 5,000,000 shares of
     Class B Common Stock, par value $0.005 per share and 5,450,000 shares of
     Preferred Stock, par value $0.001 per share.  As of March 31, 1998, there
     were outstanding:

                (i)  27,100,725 shares of Class A Common Stock,


                                     -24-



                (ii) 1,171,252 shares of Class B Common Stock, and

               (iii) no shares of Preferred Stock.

          All outstanding shares of TSA capital stock have been duly authorized
     and validly issued and are fully paid and nonassessable.

          (b)  All shares of TSA Common Stock issued in the Merger shall, upon
     issuance, be duly authorized, fully paid, validly issued and nonassessable
     and registered under the Securities Act and listed under the symbol "TSAI"
     on the NASDAQ National Market System.  TSA has reserved sufficient shares
     of TSA Common Stock for issuance in the Merger.

     SECTION IV.6   SEC FILINGS.

          (a)  TSA has delivered to the Company:

               (i)  its annual report on Form 10-K for its fiscal year ended
     September 30, 1997;

               (ii) its quarterly report on Form 10-Q for its fiscal quarter
     ended December 31, 1997; and

               (iii) its proxy statement relating to the annual meeting of the 
     shareholders of TSA held February 24, 1998 (collectively, the "SEC 
     Reports").

     SECTION IV.7   FINANCIAL STATEMENTS.  The audited consolidated financial
statements and unaudited interim financial statements of TSA included in its
annual reports on Form 10-K and quarterly reports on Form 10-Q referred to in
Section 4.6 present fairly, in conformity with GAAP, the consolidated financial
position of TSA and its consolidated subsidiaries as of the dates thereof and
their consolidated results of operations and cash flows for the periods then
ended (subject to normal year-end adjustments in the case of any interim
financial statements).  For purposes of this Agreement, "TSA Balance Sheet"
means the consolidated balance sheet of TSA as of December 31, 1997, and the
notes thereto, contained in TSA's quarterly report on Form 10-Q filed for its
fiscal quarter then ended, and "TSA Balance Sheet Date" means December 31, 1997.

     SECTION IV.8   ABSENCE OF CERTAIN CHANGES.  Since the TSA Balance Sheet
Date, TSA


                                     -25-



has conducted its business in the ordinary course and there has not occurred 
any Material Adverse Change with respect to TSA.

     SECTION IV.9   TRUTHFULNESS.  No representation or warranty of TSA 
herein and no document or certificate furnished or to be furnished by or on 
behalf of TSA or its counsel, accountants or other agents pursuant hereto or 
in connection with the transactions contemplated hereby, including, without 
limitation, the SEC Reports, contains or will contain any untrue statement of 
a material fact or omits or will omit to state a material fact necessary in 
order to make the statements contained herein or therein not misleading.

                                      ARTICLE V

                               COVENANTS OF THE COMPANY

     The Company agrees that:

     SECTION V.1    CONDUCT OF BUSINESS.  From the date hereof until the 
Closing Date, the Company shall in all material respects conduct its business 
in the ordinary course.  Without limiting the generality of the foregoing, 
from the date hereof until the Closing Date:

          (a)  The Company will not adopt or propose any change in its Charter
     or Bylaws;

          (b)  The Company will not except as agreed by TSA in writing:

               (i)  enter into any contract, agreement, plan or arrangement
     covering any director, officer or employee of the Company that provides for
     the making of any payments, the acceleration of vesting of any benefit or
     right or any other entitlement contingent upon (A) the Merger or (B) the
     termination of employment after the occurrence of any such contingency if
     such payment, acceleration or entitlement would not have been provided but
     for such contingency; or

               (ii) amend any existing contract, agreement, plan or arrangement
     so to provide;

          (c)  The Company will not issue or acquire any Common Stock or other
     securities or rights to acquire any securities except upon exercise of
     options outstanding on the date hereof as described in Section 3.5;


                                     -26-



          (d)  The Company will not acquire or become obligated to acquire any
     capital stock, partnership interests or other securities of any third
     party;

          (e)  The Company will keep in full force and effect all of its
     existing insurance and will not, without the consent of TSA, which consent
     will not be unreasonably withheld, modify or reduce the coverage
     thereunder;

          (f)  The Company will not sell, transfer, license, sublicense or
     otherwise dispose of any of its material assets, including the Company's
     Intellectual Property, or, except in the ordinary course of its business,
     pay any dividend or make any other distribution to holders of its capital
     stock;

          (g)  The Company will not, without the consent of TSA, which consent
     will not be unreasonably withheld, enter into any contract not in the
     ordinary course of business.

     SECTION V.2    ACCESS TO INFORMATION.

          (a)  From the date hereof until the Closing Date, the Company will,
     upon reasonable notice from TSA, give TSA, its counsel, financial advisors,
     auditors and other authorized representatives reasonable access during
     normal business hours to the offices, properties, books and records of the
     Company, will furnish to TSA, its counsel, financial advisors, auditors and
     other authorized representatives such financial and operating data and all
     other information with respect to the business of the Company as such
     persons may reasonably request and will instruct the employees, counsel and
     financial advisors of the Company to cooperate with TSA in its
     investigation of the business of the Company.

          (b)  From the date hereof until the Closing Date, reasonably promptly
     following the end of each month, the Company will deliver to TSA an
     unaudited balance sheet and statement of operations of the Company for such
     month prepared by the Company's management.

     SECTION V.3    OTHER OFFERS.  From the date hereof until the earlier of 
the Closing Date or the termination of this Agreement, the Company and the 
officers, directors, employees or other agents of the Company, will not, 
directly or indirectly, (i) take any action to solicit, initiate or encourage 
the making of any acquisition proposal, or (ii) engage in negotiations with, 
or, except as required by a court of competent jurisdiction, disclose any 
nonpublic information relating to the Company, or afford access to the 
properties, books or records of the Company, to any person


                                     -27-



or entity that may be considering making, or has made, an acquisition 
proposal.

     SECTION V.4    SPECIAL MEETING.  The Company shall call and hold a 
Special Meeting of its shareholders to approve this Agreement under the 
Massachusetts Business Corporation Law as promptly as practicable and in 
accordance with applicable laws for the purpose of voting upon the approval 
of the Merger and the adoption of this Agreement.  The Company shall (i) 
recommend approval of the transactions contemplated by this Agreement by the 
shareholders of the Company and include in the Notice of the Special Meeting 
such recommendation and (ii) use all reasonable efforts to solicit from its 
stockholders proxies or affirmative votes in favor of adoption of this 
Agreement and approval of the transactions contemplated hereby, and shall 
take all other action necessary or advisable to secure the vote or consent of 
shareholders to obtain such approvals.

                                      ARTICLE VI

                                   COVENANTS OF TSA

     From the date hereof until the Closing Date, TSA will, upon reasonable 
notice, give the Company, and its counsel, financial advisors, auditors and 
other authorized representatives reasonable access during normal business 
hours to the offices, properties, books and records of TSA, will furnish to 
the Company and its counsel, financial advisors, auditors and other 
authorized representatives such financial and operating data and all other 
information with respect to the business of TSA as such persons may 
reasonably request and will instruct the employees, counsel and financial 
advisors of TSA to cooperate with such persons in their investigation of the 
business of TSA.


                                     -28-



                                      ARTICLE VII

                               COVENANTS OF ALL PARTIES

     TSA and the Company agree that:

     SECTION VII.1  ADVICE OF CHANGES.  Each party will promptly advise the 
other such party in writing (i) of any event occurring subsequent to the date 
of this Agreement that would render any representation or warranty of such 
party contained in this Agreement, if made on or as of the date of such event 
or the Closing Date, untrue, inaccurate or misleading in any material respect 
(other than an event so affecting a representation or warranty which is 
expressly limited to a state of facts existing at a time prior to the 
occurrence of such event) and (ii) of any Material Adverse Change in the 
business condition of the party and its Subsidiaries, taken as a whole.

     SECTION VII.2  REGULATORY APPROVALS.  Prior to the Closing Date, each 
party shall execute and file, or join in the execution and filing of, any 
application or other document that may be necessary in order to obtain the 
authorization, approval or consent of any governmental body, federal, state, 
local or foreign, which may be reasonably required, or that the other company 
may reasonably request, in connection with the consummation of the 
transactions contemplated by this Agreement; provided, however, that TSA is 
solely responsible for compliance with the registration requirements of 
applicable securities law in connection with the issuance of the TSA Shares 
(provided that TSA's obligations are subject to the accuracy of Section 
3.27).  Each party shall use its reasonable best efforts to obtain all such 
authorizations, approvals and consents. 

     SECTION VII.3  NECESSARY CONSENTS.  Prior to the Closing Date, each 
party will use its reasonable best efforts to obtain such written consents 
and take such other actions as may be necessary or appropriate to allow the 
consummation of the transactions contemplated hereby and to allow it to carry 
on its business after the Closing Date.

     SECTION VII.4  ACTIONS CONTRARY TO STATED INTENT.  No party hereto will, 
either before or after the Merger, take any action that would prevent the 
Merger from qualifying as a reorganization under Sections 368(a)(2)(E) of the 
Code or prevent the transaction from qualifying for the pooling of interests 
method of accounting.

     SECTION VII.5  PUBLIC ANNOUNCEMENTS.  The timing and content of all 
announcements regarding any aspect of the Merger or this Agreement to the 
financial community, government agencies, employees or the public generally 
shall be mutually agreed upon in advance (unless TSA is advised by its 
counsel that any such announcement or other disclosure not mutually agreed 
upon in advance following good faith effort to secure such agreement is 
required to be


                                     -29-



made by law or applicable NASDAQ rule).

     SECTION VII.6  CONFIDENTIALITY.  Except as expressly authorized by TSA 
in writing, the Company will not directly or indirectly divulge to any person 
or entity or use any TSA Confidential Information except as required for the 
performance of its duties under this Agreement.  Except as expressly 
authorized by the Company in writing, TSA will not directly or indirectly 
divulge to any person or entity or use any Company Confidential Information, 
except as required for the performance of its duties under this Agreement.  
As used herein, "TSA Confidential Information" consists of (a) any 
information designated by TSA as confidential whether developed by TSA or 
disclosed to TSA by a third party, (b) the source and object code to any TSA 
software and any trade secrets relating to any of the foregoing, and (c) any 
information relating to TSA's product plans, product designs, product costs, 
product prices, product names, finances, marketing plans, business 
opportunities, personnel, research development or know-how.  As used herein, 
"Company Confidential Information" consists of (x) any information designated 
by the Company as confidential whether developed by the Company or disclosed 
to the Company by a third party (y) the source and object code to any Company 
software, and any trade secrets related to any of the foregoing and (z) any 
information relating to Company product plans, product designs, product 
costs, product prices, product names, finances, marketing plans, business 
opportunities, personnel, research development or know-how. "TSA Confidential 
Information" and "Company Confidential Information" also include the terms 
and conditions of this Agreement, except as disclosed in accordance with 
Section 2.6 or Section 7.5 of this Agreement.  The foregoing restriction will 
apply to information about a party whether or not it was obtained from such 
party's employees, acquired or developed by the other party during such other 
party's performance under this Agreement, or otherwise learned.  The 
foregoing restrictions will not apply to information that (i) has become 
publicly-known through no wrongful act of the receiving party, (ii) has been 
rightfully received from a third party authorized by the party which is the 
owner, creator, or compiler to make such disclosure without restriction, 
(iii) has been approved or released by written authorization of the party 
which is the owner, creator, or compiler, or (iv) is being or has heretofore 
been disclosed pursuant to a valid court order after a reasonable attempt has 
been made to notify the party which is the owner, creator, or compiler.

                                     ARTICLE VIII

                               CONDITIONS TO THE MERGER

     SECTION VIII.1 CONDITIONS TO OBLIGATIONS OF TSA.  The obligations of TSA 
hereunder are subject to the fulfillment or satisfaction, on and as of the 
Closing Date, of each of the following conditions (any one or more of which 
may be waived by TSA, but only in a writing signed by


                                     -30-



TSA):

          VIII.1.1  NO ACTIONS, ETC.  No action shall have been instituted at 
or prior to the Closing by any person or instituted or threatened by any 
public authority, relating to this Agreement or any of the transactions 
contemplated hereby or against the Company or either Buying Party, the result 
of which could prevent or make illegal the consummation of any such 
transaction or could otherwise have a Material Adverse Effect on either 
Buying Party or the Company.

          VIII.1.2  ACCURACY OF REPRESENTATIONS AND WARRANTIES AND COMPLIANCE 
WITH COVENANTS.  The representations and warranties of the Company contained 
in Article III shall be true and accurate in all material respects (and 
without regard to any knowledge limitation contained therein) on and as of 
the Closing Date with the same force and effect as if they had been made on 
the Closing Date and the Company shall have performed and complied with all 
of its covenants and agreements in all material respects on or before the 
Closing Date.  The Company shall have provided TSA with a certificate duly 
executed by the President and the Chief Financial Officer of the Company 
dated as of the Closing Date, certifying compliance with this subsection 
8.1.2.  There shall be no personal liability to any officer of the Company 
based on such officer's executing this certificate except for any 
misstatements therein made with such officer's knowledge.

          VIII.1.3  NO MATERIAL ADVERSE CHANGE.  There shall have been no 
Material Adverse Change in the Company since the Company Balance Sheet Date.

          VIII.1.4  CONSENTS.  All written consents, assignments, waivers or 
authorizations that are required as a result of the Merger for the 
continuation in full force and effect of any material contracts or leases of 
the Company shall have been obtained.

          VIII.1.5  STOCKHOLDER APPROVAL; ABSENCE OF APPRAISAL DEMANDS. 
Shareholders of the Company holding not less than 80% of the Company Common 
Stock outstanding as of the record date for the Special Meeting shall have 
voted in favor of and approved this Agreement and the Merger in accordance 
with the Massachusetts Business Corporation Law; and the Company shall not 
have received notice from any holders of more than 5% of the Company Common 
Stock in the aggregate with respect to an intent to pursue appraisal rights 
pursuant to Sections 85 through 98 of the Business Corporation Law of The 
Commonwealth of Massachusetts in respect of the Merger.

          VIII.1.6  OPTIONS, ETC.  Immediately prior to the Effective Date, 
except for the Company Options to be converted pursuant to Section 2.1.2(d) 
above and which are


                                     -31-



described in Section 3.5, there shall be no outstanding options, warrants, 
contractual obligations or commitments of any character relating to the 
issued or unissued capital stock of the Company or obligating the Company to 
issue or sell any shares of capital stock of, or other equity interests in, 
the Company.

          VIII.1.7  HART-SCOTT-RODINO.  The parties shall have complied with 
the requirements of the Hart-Scott-Rodino Antitrust Improvements Act of 1976, 
as amended, if applicable.

          VIII.1.8  CLOSING AGREEMENTS.  At or prior to the Closing (and, in 
the case of (c) below, on or before the date which is 30 days prior to the 
Effective Date), each of the following agreements (the "Closing Agreements"), 
in form and substance satisfactory to the Buying Parties, shall have been 
executed and delivered to the Buying Parties:

          (a)  the Articles of Merger;

          (b)  employment, noncompetition and/or confidentiality agreements
     executed with key management personnel;

          (c)  an agreement in the form of Exhibit A executed by each affiliate
     of the Company, including executive officers, directors, and holders of 10%
     or more of the Shares of Company Common Stock;

          (d)  an Escrow Agreement executed by the Escrow Agent (as defined in
     Section 10.1) and the Securityholders' Representative to be entered into by
     TSA at the Closing, which contains terms consistent with the terms hereof;
     and

          (e)  an agreement executed by all Optionholders agreeing to the
     conversion of the Company Options in the Merger as described in Section
     2.1.2(d) above and the termination of each Optionholder's rights with
     respect to the Company Options except as provided herein.

          VIII.1.9  TAX OPINION.  The Buying Parties shall have received a 
written opinion from Arthur Andersen, in form and substance reasonably 
satisfactory to the Buying Parties, to the effect that the Merger will 
constitute a reorganization within the meaning of Section 368 of the Code.  
The parties agree to make reasonable representations as requested by counsel 
to the Buying Parties for the purpose of rendering such opinion.

          VIII.1.10 POOLING OPINION.  The Buying Parties shall have received 
an


                                     -32-



opinion of Arthur Andersen LLP, independent public accountants, to the effect 
that the Merger qualifies for pooling of interests accounting treatment if 
consummated in accordance with this Agreement.

          VIII.1.11 EFFECTIVENESS OF THE REGISTRATION STATEMENTS AND 
PROSPECTUS DELIVERY.  The Registration Statements on Form S-4 registering the 
TSA Common Stock to be issued under this Agreement shall be effective under 
the Securities Act of 1933, as amended.  No stop order suspending the 
effectiveness of the Registration Statements shall have been issued by the 
United States Securities and Exchange Commission (the "SEC") and no 
proceedings for that purpose and no similar proceeding in respect of the 
Registration Statements shall have been initiated or threatened by the SEC.  
The prospectus filed as part of such Registration Statements, together with 
copies of the SEC Reports, shall have been sent to all shareholders and 
option holders of the Company at least 20 business days prior to the date of 
the Special Meeting provided for in Section 5.4.

     SECTION VIII.2 CONDITIONS TO OBLIGATIONS OF THE COMPANY.  The 
obligations hereunder are subject to the fulfillment or satisfaction, on and 
as of the Closing Date, of each of the following conditions (any one or more 
of which may be waived by the Company, but only in a writing signed by the 
Company):

          VIII.2.1  NO ACTIONS, ETC.  No action shall have been instituted at 
or prior to the Closing by any person or instituted or threatened by any 
public authority, pertaining to this Agreement or any of the transactions 
contemplated hereby, the results of which action or proceeding (a) could 
prevent or make illegal the consummation of any such transaction prior to the 
Closing, or (b) could otherwise have a Material Adverse Effect on at least 
80% in interest of the Securityholders.

          VIII.2.2  ACCURACY OF REPRESENTATIONS AND WARRANTIES.  The 
representations and warranties of TSA set forth in Article IV shall be true 
and accurate in all material respects (and without regard to any knowledge 
limitation contained therein) on and as of the Closing Date with the same 
force and effect as if they had been made on the Closing Date and TSA shall 
have performed and complied with all of its covenants and agreements in all 
material respects on or before the Closing Date.  TSA shall have provided the 
Company with a certificate duly executed by the President and the Chief 
Financial Officer of TSA, dated as of the Closing Date, certifying compliance 
with this subsection 8.2.2.  There shall be no personal liability to any TSA 
officer executing this certificate except for any misstatements therein made 
with such officer's knowledge.

          VIII.2.3  NO MATERIAL ADVERSE CHANGE.  There shall have been no 
Material Adverse Change in TSA since the TSA Balance Sheet Date.


                                     -33-



          VIII.2.4  STOCKHOLDER APPROVAL.  Shareholders of the Company 
holding not less than two-thirds of the Company Common Stock outstanding as 
of the record date for the Special Meeting shall have voted in favor of and 
approved this Agreement and the Merger in accordance with the Massachusetts 
Business Corporation Law.

          VIII.2.5  EFFECTIVENESS OF THE REGISTRATION STATEMENTS AND 
PROSPECTUS DELIVERY.  The Registration Statements on Form S-4 registering the 
TSA Common Stock to be issued under this Agreement shall be effective under 
the Securities Act of 1933, as amended.  No stop order suspending the 
effectiveness of the Registration Statements shall have been issued by the 
SEC and no proceedings for that purpose and no similar proceeding in respect 
of the Registration Statements, together with copies of the SEC Reports, 
shall have been initiated or threatened by the SEC.  The prospectus filed as 
part of such Registration Statements shall have been sent to all shareholders 
and option holders of the Company at least 20 business days prior to the date 
of the Special Meeting provided for in Section 5.4.

          VIII.2.6  HART-SCOTT-RODINO.  The parties shall have complied with 
the requirements of the Hart-Scott-Rodino Antitrust Improvements Act of 1976, 
as amended, if applicable.

          VIII.2.7  CLOSING AGREEMENTS.  At or prior to the Closing, each of 
the following agreements, in form and substance satisfactory to the Company, 
shall have been executed and delivered to the Company:

          (a)  the Articles of Merger;

          (b)  employment, noncompetition and/or confidentiality agreements
     executed with key management personnel;

          (c)  an Escrow Agreement executed by the Escrow Agent (as defined in
     Section 10.1) and the Securityholders' Representative to be entered into by
     TSA at the Closing, which contains terms consistent with the terms hereof;
     and

          (d)  an agreement executed by all Optionholders agreeing to the
     conversion of the Company Options in the Merger as described in Section
     2.1.2(d) above and the termination of each Optionholder's rights with
     respect to the Company Options except as provided herein.


                                     -34-



                                      ARTICLE IX

                               TERMINATION OF AGREEMENT

     SECTION IX.1   TERMINATION PRIOR TO THE CLOSING DATE.  Unless otherwise 
agreed by the parties hereto, this Agreement shall be terminated if the 
Closing Date does not occur on or before May 31, 1998.


                                     -35-



      SECTION IX.2   TERMINATION.  This Agreement may be terminated at any 
time prior to the Closing Date:

          (a)  by mutual consent of the Board of Directors of TSA and the
     Company;

          (b)  by TSA, if (A) there has been a breach by the Company of any of
     its representations and warranties hereunder such that Section 8.1.2 will
     not be satisfied, (B) there has been a breach on the part of the Company of
     any of their covenants or agreements contained in this Agreement such that
     in both case (A) and case (B), such breach has not been promptly cured
     after 10 days notice (in reasonable detail) to the Company, or (C)
     permitted under Section 11.1(b) hereof; or

          (c)  by the Company, if (A) there has been a breach by TSA of any of
     its representations and warranties hereunder such that Section 8.2.2 will
     not be satisfied or (B) there has been a breach on the part of TSA of any
     of its covenants or agreements contained in this Agreement such that in
     both case (A) and case (B), such breach has not been promptly cured after
     10 days notice (in reasonable detail) to TSA.

     SECTION IX.3   EFFECT OF TERMINATION.  In the event of termination of 
this Agreement as provided above, this Agreement shall forthwith become void, 
and there shall be no liability on the part of the terminating party, except 
that the agreements contained or referred to in Sections 7.5, 7.6, 9.3, and 
11.3 shall survive the termination hereof.  Nothing herein shall limit the 
remedies available at law or in equity against the breaching party.

                                      ARTICLE X

            SURVIVAL OF REPRESENTATIONS AND WARRANTIES, INDEMNITY, ESCROW
                                  OF SHARES

     SECTION X.1    SURVIVAL OF REPRESENTATIONS AND WARRANTIES, INDEMNITY, 
ESCROW OF SHARES PENDING RESOLUTION OF CERTAIN MATTERS.  Upon consummation of 
the Merger, Parent shall deliver to Norwest Bank Minnesota, as escrow agent 
(the "Escrow Agent"), a certificate representing the Escrowed Shares.  The 
Escrowed Shares shall be held by the Escrow Agent in the escrow (the 
"Escrow") and either released to the Securityholders or surrendered to the 
Buying Parties according to the provisions of this Article X.  The Escrowed 
Shares of each Securityholder shall be applied to indemnify and hold harmless 
Parent and its Affiliates against and in respect of any and all Losses 
specified in Section 10.6 for which the Buying Parties and their Affiliates 
are entitled to indemnification pursuant to the provisions of this Article X, 
the amount of such indemnification to be determined as provided in this 
Article X.


                                     -36-



Each Securityholder shall be entitled to vote such Escrowed Shares as are, 
from time to time, held for such Securityholder's account as Escrowed Shares 
and to receive any cash dividend or distribution thereon (any dividends or 
distributions in the form of securities of Parent or other persons shall be 
delivered to the Escrow Agent and held as part of the Escrowed Shares).

     SECTION X.2    TERM OF ESCROW.  Except as provided in Section 10.3, the 
Escrowed Shares shall not be released from the Escrow until the first 
anniversary of the Closing Date.  Notwithstanding anything in this Article X 
to the contrary, the Securityholders' Representative at the request of a 
Securityholder may instruct the Escrow Agent to sell up to the number of 
Escrowed Shares in which such Securityholder has an interest (subject to 
applicable securities law compliance and the restrictions contained in the 
agreement described in Section 8.1.8(c)), provided that (i) the proceeds of 
any such sale of an Escrowed Share ("Proceeds") shall be maintained in the 
Escrow to the same extent as Escrowed Shares, (ii) the Proceeds shall be 
treated for purposes of this Article X in the same manner as Escrowed Shares 
allocable to such selling Securityholder (to the extent not given to Parent 
pursuant to Section 10.4), and (iii) the Proceeds shall be deemed to be the 
equivalent of one Escrowed Share for purposes of this Article X.  To the 
extent available (and subject to the allocation of Proceeds provided for in 
clause (ii) of this Section), Escrowed Shares shall be given to Parent to the 
extent required pursuant to Section 10.4 prior to the delivery of any 
Proceeds. 

     SECTION X.3    FORMULA FOR NUMBER OF ESCROWED SHARES TO BE RETURNED TO 
PARENT.  The number of Escrowed Shares to be returned to Parent in respect of 
each Loss for which it is entitled to indemnity hereunder shall be computed 
by dividing the dollar amount of the Securityholders' liability in respect of 
such Loss by the Closing Price (subject to appropriate adjustment of the 
number of shares in the event of a stock dividend on, or stock split or 
combination of shares or other recapitalization of, or in respect of, the 
Escrowed Shares or in the event that other securities or property have been 
deposited in the Escrow in connection with any merger, consolidation or 
liquidation of Parent); and such Escrowed Shares to be so returned to Parent 
shall be allocated among the Securityholders in proportion to their then 
respective interests in the Escrowed Shares.

     SECTION X.4    CERTIFICATION OF LOSSES, RETURN OF SHARES TO PARENT AND 
DELIVERY OF BALANCE TO THE SECURITYHOLDERS.

          (a)  Parent shall provide written notice to the Securityholders'
     Representative and the Escrow Agent of the occurrence of a "Loss" (as
     hereinafter defined) to which it is entitled to indemnification (which
     notice shall specify the circumstances of such Loss and the number of
     Escrowed Shares to be applied in respect thereof).  Securityholders'
     Representative shall, within 30 days after delivery of such notice, (a)
     provide written


                                     -37-



     notice to Parent and the Escrow Agent pursuant to Section 10.4(b)(i) or 
     (ii), or (b) jointly with Parent instruct the Escrow Agent to apply all 
     or the specified portion of the Escrowed Shares to the payment, 


                                     -38-



     reimbursement, settlement or discharge of such Loss.  Failure of the
     Securityholders' Representative to give notice within the 30 day period
     shall be conclusively deemed to be his instruction under clause (b) of this
     subsection.

          (b)  Within 30 days after delivery of the notice to Securityholders'
     Representative referred to in Section 10.4(a), Securityholders'
     Representative may provide written notice to Parent:

               (i)  questioning the propriety of such proposed application, in
     which case such question shall be resolved under the Commercial Arbitration
     Rules of the American Arbitration Association (the "AAA") by an arbitral
     tribunal located in Chicago, Illinois composed of three arbitrators, at
     least one of whom shall be an attorney experienced in corporate
     transactions, appointed by agreement of the parties in accordance with said
     Rules.  In the event the parties fail to agree upon a panel of arbitrators
     from the first list of potential arbitrators proposed by the AAA, the AAA
     will submit a second list in accordance with said Rules.  In the event the
     parties shall have failed to agree upon a full panel of arbitrators from
     said second list, any remaining arbitrators to be selected shall be
     appointed by the AAA in accordance with said Rules.  If, at the time of the
     arbitration, the parties agree in writing to submit the dispute to a single
     arbitrator, said single arbitrator shall be appointed by agreement of the
     parties in accordance with the foregoing procedure, or, failing such
     agreement, by the AAA in accordance with said Rules.  The arbitrators shall
     determine (a) the amount, if any, of such proposed application which is
     proper, and (b) the amount to be borne by each party and the party or
     parties who shall bear the expense of such determination (which shall be
     allocated to the Securityholders in the proportion that the amount of the
     application designated by such arbitrators to be borne by the
     Securityholders bears to the amount originally sought by Parent) and shall
     be conclusive on all parties; or

               (ii) that the Securityholders dispute and intend to defend the
     third-party claim giving rise to such Loss or potential Loss, provided
     that, and for so long as, such defense is being conducted by such
     Securityholders at their expense and in a manner reasonably deemed by
     Parent to be satisfactory and effective to protect it against such Loss.

          (c)  The Escrowed Shares, or any balance thereof held by the Escrow
     Agent as to which notice shall not have been given by Parent as aforesaid
     on or prior to the first anniversary date of the Closing Date shall be
     delivered to the Securityholders not more


                                     -39-



     than fifteen days after the first anniversary of the Closing Date and 
     such Shares to be so returned shall be allocated among the 
     Securityholders in proportion to their then respective interests 
     in the Escrowed Shares.  Parent shall promptly notify the Escrow Agent on
     or before the first anniversary of the Closing Date indicating the number
     of Escrowed Shares the application of which has been deferred pursuant to
     clause (i) or (ii) of Section 10.4(b) above or pending the 30 day period
     provided for in Sections 10.4(a) and 10.4(b) and, if Parent fails to give
     such notice within 10 days after the first anniversary of the Closing Date
     Securityholders' Representative may so notify the Escrow Agent.

     SECTION X.5    SURVIVAL OF REPRESENTATIONS.  Except  as otherwise 
expressly provided herein, the representations, warranties, covenants and 
agreements of the parties contained in or made pursuant to this Agreement 
shall survive the execution and delivery of this Agreement and the Closing 
Date and shall in no way be affected by any investigation of the subject 
matter thereof made by or on behalf of any other party and, except as 
otherwise provided in this Section 10.5, shall expire, in the case of 
representations and warranties encountered in the audit process, the date of 
the first audit report of TSA's auditors relating to the financial statements 
containing the combined operations for TSA and the Company, and, in the case 
of representations and warranties not encountered in such audit process and 
all covenants and agreements of the parties, on the first anniversary of the 
Closing Date (in either case, the "Release Date"). Notwithstanding the 
foregoing, the agreements of the parties contained in Section 7.6 shall 
survive and not expire on the Release Date.

     SECTION X.6    INDEMNIFICATION BY THE SECURITYHOLDERS.  If the Closing 
of the Merger shall occur, then, subject to the provisions of this Section 
10.6, the Securityholders shall indemnify and hold harmless TSA, the 
Surviving Corporation, and their respective affiliates from and against all 
damages ("Losses") arising from any misrepresentation or breach of warranty, 
covenant or agreement made by the Company in this Agreement or in any 
document, instrument or certificate delivered pursuant hereto; provided, 
however, that the Securityholders shall be liable for Losses only to the 
extent the aggregate amount of such Losses exceeds $250,000, but if the 
aggregate amount of Losses exceeds $250,000, the Securityholders also shall 
be liable for the first $250,000 thereof; provided further that in no event 
shall the Securityholders' indemnity obligations under this Section 10.6 for


                                     -40-



Losses exceed the amount of the Escrowed Shares.  The Buying Parties, the 
Company and their respective Affiliates in their capacities as indemnitees 
under this Section 10.6 shall not have general recourse against the assets of 
the Securityholders in respect of their indemnification obligations under 
this Section 10.6, but rather the sole recourse for collection in respect of 
such indemnification obligations in respect of Losses shall be limited to 
application of the Escrowed Shares as provided in this Article X and as so 
limited the indemnification obligations of the Securityholders shall be joint 
but not several.  Notwithstanding anything herein to the contrary, except 
with respect to claims based on fraud or which arise out of or are 
attributable to acts or omissions taken or made prior to Closing in 
connection with the business of the Company that constitute willful 
misconduct, gross negligence or a violation of applicable law or regulations 
for which criminal liability may be assessed, the rights of the indemnitees 
under this Article X shall be the exclusive remedy of such persons with 
respect to claims resulting from or relating to any misrepresentation, breach 
of any representation or warranty or failure to perform any covenant or 
agreement of the Company contained in this Agreement and except with respect 
to such claims all limitations as to the time and amount of liability shall 
apply.  Notwithstanding the foregoing, the Securityholders' obligations under 
Section 11.3 shall be joint and several and in addition to the obligations 
under this Section 10.6.

     SECTION X.7    SECURITYHOLDERS' PARTICIPATION IN DEFENSE AGAINST THIRD 
PARTY CLAIMS.  The Securityholders shall be entitled to assume the defense of 
any claims for which TSA shall seek indemnification from the Securityholders 
under this Agreement and which are brought by parties unaffiliated with TSA.  
If the Securityholders elect in writing to assume the defense of any lawsuit 
or action with respect to any claim for which TSA is seeking indemnification 
under this Agreement, the Securityholders shall take control of the defense 
and investigation of such lawsuit or action and shall employ and engage an 
attorney of their own choice reasonably acceptable to TSA to handle and 
defend such lawsuit or action, at the Securityholders' cost.  TSA shall have 
the right to employ counsel with respect to any such claim, but the fees and 
expenses of such counsel shall be at the expense of TSA unless (i) the 
employment of counsel by TSA has been authorized in writing by the 
Securityholders, or (ii) the Securityholders shall not in fact have employed 
counsel reasonably acceptable to TSA to assume the defense of such claim, in 
each of which case, the fees and expenses of counsel shall be at the expense 
of the Securityholders.  Regardless of which party is controlling the defense 
of any claim, (i) both the Securityholders and TSA shall act in good faith, 
(ii) no settlement of such claim may be agreed to without the written consent 
of both the Securityholders and TSA, which consent shall not be unreasonably 
withheld, and (iii) the fees and expenses of the counsel retained to defend 
such claim shall be payable by the Securityholders except as provided in the 
foregoing sentence.

     SECTION X.8    INDEMNIFICATION BY TSA.  If the Closing of the Merger 
shall occur, then, subject to the provisions of this Section 10.8, TSA shall 
indemnify and hold harmless the


                                     -41-



Securityholders from and against all damages arising from any 
misrepresentation or breach of warranty, covenant or agreement made by TSA in 
this Agreement or in any document, instrument or certificate delivered 
pursuant hereto.

     TSA shall indemnify the Securityholders for the damages set forth in 
Section 10.8 but in no event shall TSA be required to indemnify any 
Securityholder for an amount in excess of 10% of the value of the TSA shares 
received by such Securityholder pursuant to the Merger, valued at the Closing 
Price, and provided that TSA shall be liable for such damages only to the 
extent the aggregate amount of such damages exceeds $250,000 (but if the 
aggregate amount of such damages exceeds $250,000, TSA shall also be liable 
for the first $250,000 thereof).

     To make any claim under this Section 10.8, the Securityholders' 
Representative shall provide written notice to TSA setting forth the damages 
incurred and specifying the circumstances giving rise to the claim.  Within 
30 days after receipt of such notice, TSA shall either (a) pay such amount or 
(b) provide written notice to the Securityholders' Representative (i) 
questioning the propriety of the claim for indemnification or (ii) that TSA 
disputes and intends to defend the third-party claim giving rise to such 
damages or potential damages, provided that, and for so long as, such defense 
is being conducted by TSA at its expense and in a manner reasonably deemed by 
the Securityholders' Representative to be satisfactory and effective to 
protect the Securityholders against damages.  If TSA provides notice 
questioning the propriety of the claim for indemnification pursuant to clause 
(i) of the immediately preceding sentence, and if TSA and the 
Securityholders' Representative fail to reach agreement within 30 days after 
delivery by TSA of such notice, then the dispute shall be resolved under the 
Commercial Arbitration Rules of the AAA by an arbitral tribunal located in 
Chicago, Illinois composed of three arbitrators, at least one of whom shall 
be an attorney experienced in corporate transactions, appointed by agreement 
of the parties in accordance with said Rules.  In the event the parties fail 
to agree upon a panel of arbitrators from the first list of potential 
arbitrators proposed by the AAA, the AAA will submit a second list in 
accordance with said Rules.  In the event the parties shall have failed to 
agree upon a full panel of arbitrators from said second list, any remaining 
arbitrators to be selected shall be appointed by the AAA in accordance with 
said Rules.  If, at the time of the arbitration, the parties agree in writing 
to submit the dispute to a single arbitrator, said single arbitrator shall be 
appointed by agreement of the parties in accordance with the foregoing 
procedure, or, failing such agreement, by the AAA in accordance with said 
Rules. The arbitrators shall determine (a) the amount, if any, of 
indemnification which is proper (subject to the provisions of this Section 
10.8) and (b) the party or parties who shall bear the expense of such 
determination  (which shall be allocated to TSA in the proportion that the 
amount of the indemnification designated by such arbitrators to be borne by 
TSA bears to the amount originally sought by the Securityholders), and shall 
be conclusive on all parties. Notwithstanding the foregoing, if the 
Securityholders' Representative fails to initiate arbitration proceedings 
pursuant to this Section 10.8 within 60


                                     -42-



days after delivery by TSA of the notice questioning the propriety of the 
claim for indemnification, then TSA's obligations under this Article X with 
respect to such claim for indemnification shall terminate.

     SECTION X.9    TSA'S PARTICIPATION IN DEFENSE AGAINST THIRD PARTY 
CLAIMS. TSA shall be entitled to assume the defense of any claims for which 
the Securityholders shall seek indemnification from TSA under this Agreement. 
If TSA elects in writing to assume the defense of any lawsuit or action with 
respect to any claim for which the Securityholders are seeking 
indemnification under this Agreement, TSA shall take control of the defense 
and investigation of such lawsuit or action and shall employ and engage one 
attorney of its own choice reasonably acceptable to the Securityholders to 
handle and defend all of the Securityholders in such lawsuit or action, at 
TSA's cost.  The Securityholders shall have the right to employ counsel with 
respect to any such claim, but the fees and expenses of such counsel shall be 
at the expense of the Securityholders unless (i) the employment of counsel by 
the Securityholders has been authorized in writing by TSA, or (ii) TSA shall 
not in fact have employed counsel reasonably acceptable to the 
Securityholders to assume the defense of such claim, in each of which case, 
the fees and expenses of counsel shall be at the expense of TSA.  Regardless 
of which party is controlling the defense of any claim, (i) both the 
Securityholders and TSA shall act in good faith, (ii) no settlement of such 
claim may be agreed to without the written consent of both the 
Securityholders and TSA, which consent shall not be unreasonably withheld, 
and (iii) the fees and expenses of the counsel retained to defend such claim 
shall be payable by TSA except as provided in the foregoing sentence.

                                      ARTICLE XI

                                    MISCELLANEOUS

     SECTION XI.1   CERTAIN UPDATED INFORMATION.

     (a)  The Company shall have the right to supplement or amend Schedules 
or to furnish additional Schedules to TSA by May 4, 1998.  If the Company 
supplements or amends any Schedule attached hereto or previously submitted to 
TSA, or if the Company provides any additional Schedule to TSA after the date 
of this Agreement, then such supplemented, amended or additional Schedule 
shall be subject to the review of TSA.  If TSA determines, within five 
business days after TSA's receipt of the supplemented, amended or additional 
Schedule, in its reasonable discretion that the supplementary, amended or 
additional information is material and adverse, then TSA may disapprove of 
the supplemented, amended or additional Schedule.  If TSA does not disapprove 
of any such supplemented, amended or additional Schedule within the


                                     -43-



five business day period set forth above, such supplemented, amended or 
additional Schedule shall be deemed approved.

          (b)  If TSA disapproves of any supplemented, amended or additional 
Schedule pursuant to the above paragraph within the five business day period 
set forth therein, then TSA shall have the right to unilaterally terminate 
this Agreement with no liability on the part of TSA to the Company.

     SECTION XI.2   FURTHER ASSURANCES.  Each party agrees to cooperate fully 
with the other parties and to execute such further instruments, documents and 
agreements and to give such further written assurances as may be reasonably 
requested by any other party to better evidence and reflect the transactions 
described herein and contemplated hereby and to carry into effect the intents 
and purposes of this Agreement.

     SECTION XI.3   FEES AND EXPENSES.  Each party shall bear its own fees 
and expenses provided, however, that the Securityholders shall bear the fees 
and expenses of the Company and the Securityholders, including without 
limitation, except as specified in this Section 11.3, any fee or commission 
due any investment banker, broker, finder or other intermediary retained by 
or authorized to act on behalf of any Securityholder or the Company and any 
legal, accounting or other fees or expenses incurred by the Company or the 
Securityholders.  Notwithstanding the foregoing, TSA shall bear the success 
fee due Broadview Associates pursuant to the agreement between the Company 
and Broadview Associates dated as of June 9, 1997,  a true and complete copy 
of which has been provided to TSA prior to the date hereof.

     SECTION XI.4   NOTICES.  Whenever any party hereto desires or is 
required to give any notice, demand, or request with respect to this 
Agreement, each such communication shall be in writing and shall be effective 
only if it is delivered by personal service or mailed, United States 
registered or certified mail, postage prepaid, or sent by prepaid overnight 
courier or confirmed telecopier, addressed as follows:

If to TSA and/or Merger Sub:

          William E. Fisher
          CEO & President
          Transaction Systems Architects, Inc.
          330 South 108th Avenue
          Omaha, Nebraska 68154
          Telecopy:  (402) 390-8077


                                     -44-



With a copy in each case to:

          David P. Stokes
          General Counsel
          Transaction Systems Architects, Inc.
          330 South 108th Avenue
          Omaha, Nebraska 68154
          Telecopy:  (402) 390-8077

If to the Company:

          Richard J. Condon, Jr., President
          IntraNet, Inc.
          One Gateway Center
          Newton, MA 02158
          Telecopy: (617) 527-6779

With a copy in each case to:

          Trevor W. Nagel
          Shaw Pittman Potts & Trowbridge
          2300 N Street, NW
          Washington, DC 20037
          Telecopy: (202) 663-8007

If to the Securityholders' Representative:

          Anthony D. Smith
          c/o IntraNet, Inc.
          One Gateway Center
          Newton, MA 02158
          Telecopy: (617) 527-6779

With a copy in each case to:

          Trevor W. Nagel
          Shaw Pittman Potts & Trowbridge
          2300 N Street, NW
          Washington, DC 20037
          Telecopy: (202) 663-8007


                                     -45-



     Such communications shall be effective when they are received by the 
addressee thereof.  Any party may change its address or telecopier number for 
such communications by giving notice thereof to the other parties in 
conformity with this Section.

     SECTION XI.5   GOVERNING LAW.  The laws of the State of Nebraska 
(irrespective of its choice of law principles) shall govern the validity of 
this Agreement, the construction of its terms, and the interpretation and 
enforcement of the rights and duties of the parties.

     SECTION XI.6   BINDING UPON SUCCESSORS AND ASSIGNS.  No assignment or 
transfer by any of the parties of their respective rights and obligations 
hereunder shall be made except for such transfers as are effected by death or 
testamental succession or otherwise by operation of law.  This Agreement 
shall be binding upon and shall inure to the benefit of the parties hereto 
and their permitted successors and assigns (including without limitation the 
administrators, executors, representatives, heirs, legatees and devisees of 
the Securityholders), and any reference to such a party hereto shall also be 
a reference to permitted successors or assigns.

     SECTION XI.7   SEVERABILITY.  If any provision of this Agreement, or the 
application thereof, shall for any reason or to any extent be invalid or 
unenforceable, the remainder of this Agreement and application of such 
provision to other persons or circumstances shall continue in full force and 
effect and in no way be affected, impaired or invalidated.

     SECTION XI.8   ENTIRE AGREEMENT.  This Agreement and the other 
agreements and instruments referenced herein constitute the entire 
understanding and agreement of the parties with respect to the subject matter 
hereof and thereof and supersede all prior and contemporaneous agreements or 
understandings, inducements or conditions, express or implied, written or 
oral, between the parties with respect hereto.

     SECTION XI.9   OTHER REMEDIES.  Except as otherwise provided herein, any 
and all remedies herein expressly conferred upon a party shall be deemed 
cumulative with and not exclusive of any other remedy conferred hereby or by 
law on such party, and the exercise of any one remedy shall not preclude the 
exercise of any other.

     SECTION XI.10  AMENDMENT AND WAIVERS.  Any term or provision of this 
Agreement may be amended and the observance of any term of this Agreement may 
be waived (either generally or in a particular instance and either 
retroactively or prospectively) only by a writing signed by the party to be 
bound thereby.  The waiver by a party of any breach hereof or default in the 
performance hereof shall not be deemed to constitute a waiver of any other 
default or any succeeding breach or default.  The failure of any party to 
enforce any of the provisions hereof shall not be construed to be a waiver of 
the right of such party thereafter to enforce


                                     -46-



such provisions.  This Agreement may not be amended or supplemented by any 
party hereto except pursuant to a written amendment executed by all parties.

     SECTION XI.11  CONSTRUCTION OF AGREEMENT.  A reference to an Article, 
Section, Schedule or Exhibit shall mean an Article of, a Section in, or 
Schedule or Exhibit to, this Agreement unless otherwise explicitly set forth. 
 The titles and headings herein are for reference purposes only and shall not 
in any manner limit the construction of this Agreement which shall be 
considered as a whole. The words "include," "includes," and "including" when 
used herein shall be deemed in each case to be followed by the words "without 
limitation."

     SECTION XI.12  ABSENCE OF THIRD PARTY BENEFICIARY RIGHTS.  No provision 
of this Agreement is intended, nor  will be interpreted, to provide or create 
any third party beneficiary rights or any other rights of any kind in any 
client, customer, affiliate, shareholder, optionholder, employee, partner or 
any party hereto or any other person or entity (except for the rights 
specifically created by this Agreement with respect to the Securityholders) 
and all provisions hereof will be personal solely between the parties to this 
Agreement.

     SECTION XI.13  MUTUAL DRAFTING.  This Agreement is the joint product of 
the parties hereto, and each provision hereof has been subject to the mutual 
consultation, negotiation and agreement of such parties, and shall not be 
construed for or against any party hereto.

     SECTION XI.14  COUNTERPARTS.  This Agreement may be executed in any 
number of counterparts, each of which shall be an original as against any 
party whose signature appears thereon and all of which together shall 
constitute one and the same instrument. This Agreement shall become


                                     -47-




binding when one or more counterparts hereof, individually or taken together, 
shall bear the signatures of all of the parties reflected hereon as 
signatories.


IN WITNESS WHEREOF, the Parties hereto have executed this Agreement on the date
first above written.



TRANSACTION SYSTEMS ARCHITECTS, INC.


By:  /s/ Gregory J. Duman
     -------------------------------
     Gregory J. Duman, Chief Financial Officer



I. N. ACQUISITION CORP.     SEAL:


By:  /s/ Gregory J. Duman
     -------------------------------
     Gregory J. Duman, President
and

By:  /s/ David P. Stokes
     -------------------------------
     David P. Stokes, Treasurer



INTRANET, INC.             SEAL:


By:  /s/ Richard J. Condon
     -------------------------------
     Richard J. Condon, Jr., President
and

By:  /s/ Jonathan M. Edwards
     -------------------------------
     Jonathan M. Edwards, Treasurer



SECURITYHOLDERS' REPRESENTATIVE:


By:  /s/ Anthony D. Smith
     -------------------------------
     Anthony D. Smith


                                     -48-


                                   AMENDMENT NO. 1 
                                          TO
                             AGREEMENT AND PLAN OF MERGER

          This Amendment No. 1 (this "Amendment") to the Agreement and Plan 
of Merger (the "Agreement") dated as of April 27, 1998 among Transaction 
Systems Architects, Inc., a Delaware corporation ("TSA" or "Parent"), I.N. 
Acquisition Corp., a Massachusetts corporation and a wholly-owned subsidiary 
of Parent, and IntraNet, Inc., a Massachusetts corporation (the "Company") is 
entered into by the parties hereto as of this 28th day of May, 1998.

                                       RECITALS

          The parties desire to amend certain terms of the Agreement relating 
to the conversion of Company Options.

          THEREFORE, the parties hereto agree that the Agreement is hereby 
amended as follows:

          1.   AMENDMENTS.

               1.1  The third sentence of Section 2.1.2(d) is hereby amended 
to delete the phrase ", and less (iii) the quotient of all withholding taxes 
applicable to the conversion and exchange of such Company Option divided by 
the Closing Price."

               1.2  Section 2.1.2(d) is hereby amended to add the following 
sentence: On the Closing Date, each Optionholder shall pay (or cause to be 
paid) to the Surviving Corporation in cash an amount equal to all withholding 
taxes applicable to the conversion and exchange of each Company Option in 
connection with the Merger.  

          2.   MISCELLANEOUS.  The laws of the State of Nebraska 
(irrespective of its choice of law principles) shall govern the validity of 
this Amendment, the construction of its terms, and the interpretation and 
enforcement of the rights and duties of the parties.  Except as specifically 
amended hereby, the Agreement shall remain in full force and effect in 
accordance with its existing terms, but each reference in the Agreement to 
"this Agreement," "hereunder," "hereof," "herein" or words of like import, 
and references to the Agreement in any and all instruments or documents in 
connection therewith, shall, except where the context otherwise requires, be 
deemed a reference to the Agreement as amended hereby.  This Amendment may be 
executed in multiple counterparts, each of which shall be an original, but 
all of which taken together shall constitute one instrument.




               IN WITNESS WHEREOF, the parties hereto have executed this 
Amendment as of May 28, 1998.


TRANSACTION SYSTEMS ARCHITECTS, INC.


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, Chief Financial Officer



I. N. ACQUISITION CORP.                 SEAL:


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, President

and

By: /s/ David P. Stokes
   ----------------------------------------
   David P. Stokes, Treasurer


INTRANET, INC.                          SEAL:


By: /s/ Richard J. Condon
   ----------------------------------------
   Richard J. Condon, Jr., President

and

By: /s/ Jonathan M. Edwards
   ----------------------------------------
   Jonathan M. Edwards, Treasurer


SECURITYHOLDERS' REPRESENTATIVE:


By: /s/ Anthony D. Smith
   ----------------------------------------
   Anthony D. Smith


                                   AMENDMENT NO. 2
                                          TO
                             AGREEMENT AND PLAN OF MERGER

          This Amendment No. 2 (this "Amendment") to the Agreement and Plan 
of Merger dated as of April 27, 1998 among Transaction Systems Architects, 
Inc., a Delaware corporation ("TSA" or "Parent"), I.N. Acquisition Corp., a 
Massachusetts corporation and a wholly-owned subsidiary of Parent, and 
IntraNet, Inc., a Massachusetts corporation (the "Company"), as previously 
amended pursuant to Amendment No. 1 thereto (the "Agreement"), is entered 
into by the parties hereto as of this 29th day of May, 1998.  

          1.   AMENDMENT.  The parties hereto agree that Section 9.1 of the 
Agreement is hereby amended to read in its entirety as follows:

          SECTION 9.1    TERMINATION PRIOR TO THE CLOSING DATE.  Unless 
otherwise agreed by the parties hereto, this Agreement shall be terminated if 
the Closing Date does not occur on or before June 30, 1998.

          2.   MISCELLANEOUS.  The laws of the State of Nebraska 
(irrespective of its choice of law principles) shall govern the validity of 
this Amendment, the construction of its terms, and the interpretation and 
enforcement of the rights and duties of the parties.  Except as specifically 
amended hereby, the Agreement shall remain in full force and effect in 
accordance with its existing terms, but each reference in the Agreement to 
"this Agreement," "hereunder," "hereof," "herein" or words of like import, 
and references to the Agreement in any and all instruments or documents in 
connection therewith, shall, except where the context otherwise requires, be 
deemed a reference to the Agreement as amended by Amendment No. 1 thereto and 
this Amendment.  This Amendment may be executed in multiple counterparts, 
each of which shall be an original, but all of which taken together shall 
constitute one instrument.




               IN WITNESS WHEREOF, the parties hereto have executed this 
Amendment as of May 29, 1998.

TRANSACTION SYSTEMS ARCHITECTS, INC.


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, Chief Financial Officer



I. N. ACQUISITION CORP.                 SEAL:


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, President

and

By: /s/ David P. Stokes
   ----------------------------------------
   David P. Stokes, Treasurer


INTRANET, INC.                          SEAL:


By: /s/ Richard J. Condon
   ----------------------------------------
   Richard J. Condon, Jr., President

and

By: /s/ Jonathan M. Edwards
   ----------------------------------------
   Jonathan M. Edwards, Treasurer


SECURITYHOLDERS' REPRESENTATIVE:


By: /s/ Anthony D. Smith
   ----------------------------------------
   Anthony D. Smith


                                   AMENDMENT NO. 3
                                          TO
                             AGREEMENT AND PLAN OF MERGER

     This Amendment No. 3 (this "Amendment") to the Agreement and Plan of 
Merger dated as of April 27, 1998 among Transaction Systems Architects, Inc., 
a Delaware corporation ("TSA" or "Parent"), I.N. Acquisition Corp., a 
Massachusetts corporation and a wholly-owned subsidiary of Parent, and 
IntraNet, Inc., a Massachusetts corporation (the "Company"), as previously 
amended pursuant to Amendment No. 1 and Amendment No. 2 thereto (the 
"Agreement"), is entered into by the parties hereto as of this 26th day of 
June, 1998.  

     1.   AMENDMENT.  The parties hereto agree that Section 9.1 of the 
Agreement is hereby amended to read in its entirety as follows:

     SECTION 9.1    TERMINATION PRIOR TO THE CLOSING DATE.  Unless otherwise 
agreed by the parties hereto, this Agreement shall be terminated if the 
Closing Date does not occur on or before July 17, 1998.

     2.   MISCELLANEOUS.  The laws of the State of Nebraska (irrespective of 
its choice of law principles) shall govern the validity of this Amendment, 
the construction of its terms, and the interpretation and enforcement of the 
rights and duties of the parties.  Except as specifically amended hereby, the 
Agreement shall remain in full force and effect in accordance with its 
existing terms, but each reference in the Agreement to "this Agreement," 
"hereunder," "hereof," "herein" or words of like import, and references to 
the Agreement in any and all instruments or documents in connection 
therewith, shall, except where the context otherwise requires, be deemed a 
reference to the Agreement as amended by Amendment No. 1 and Amendment No. 2 
thereto and this Amendment.  This Amendment may be executed in multiple 
counterparts, each of which shall be an original, but all of which taken 
together shall constitute one instrument.




          IN WITNESS WHEREOF, the parties hereto have executed this Amendment 
as of June 26, 1998.

TRANSACTION SYSTEMS ARCHITECTS, INC.


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, Chief Financial Officer



I. N. ACQUISITION CORP.                 SEAL:


By:  /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, President

and

By: /s/ David P. Stokes
   ----------------------------------------
   David P. Stokes, Treasurer


INTRANET, INC.                          SEAL:


By: /s/ Richard J. Condon, Jr.
   ----------------------------------------
   Richard J. Condon, Jr., President

and

By: /s/ Jonathan M. Edwards
   ----------------------------------------
   Jonathan M. Edwards, Treasurer


SECURITYHOLDERS' REPRESENTATIVE:


By: /s/ Anthony D. Smith
   ----------------------------------------
   Anthony D. Smith


                                   AMENDMENT NO. 4
                                          TO
                             AGREEMENT AND PLAN OF MERGER

     This Amendment No. 4 (this "Amendment") to the Agreement and Plan of 
Merger dated as of April 27, 1998 among Transaction Systems Architects, Inc., 
a Delaware corporation ("TSA" or "Parent"), I.N. Acquisition Corp., a 
Massachusetts corporation and a wholly-owned subsidiary of Parent, and 
IntraNet, Inc., a Massachusetts corporation (the "Company"), as previously 
amended pursuant to Amendment No. 1, Amendment No. 2 and Amendment No. 3 
thereto (the "Agreement"), is entered into by the parties hereto as of this 
16th day of July, 1998.  

     1.   AMENDMENT.  The parties hereto agree that Section 9.1 of the 
Agreement is hereby amended to read in its entirety as follows:

     SECTION 9.1    TERMINATION PRIOR TO THE CLOSING DATE.  Unless otherwise 
agreed by the parties hereto, this Agreement shall be terminated if the 
Closing Date does not occur on or before August 7, 1998.

     2.   MISCELLANEOUS.  The laws of the State of Nebraska (irrespective of 
its choice of law principles) shall govern the validity of this Amendment, 
the construction of its terms, and the interpretation and enforcement of the 
rights and duties of the parties.  Except as specifically amended hereby, the 
Agreement shall remain in full force and effect in accordance with its 
existing terms, but each reference in the Agreement to "this Agreement," 
"hereunder," "hereof," "herein" or words of like import, and references to 
the Agreement in any and all instruments or documents in connection 
therewith, shall, except where the context otherwise requires, be deemed a 
reference to the Agreement as amended by Amendment No. 1, Amendment No. 2 and 
Amendment No. 3 thereto and this Amendment.  This Amendment may be executed 
in multiple counterparts, each of which shall be an original, but all of 
which taken together shall constitute one instrument.



          IN WITNESS WHEREOF, the parties hereto have executed this Amendment 
as of July 16, 1998.

TRANSACTION SYSTEMS ARCHITECTS, INC.


By: /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, Chief Financial Officer



I. N. ACQUISITION CORP.                 SEAL:


By:  /s/ Gregory J. Duman
   ----------------------------------------
   Gregory J. Duman, President

and

By: /s/ David P. Stokes
   ----------------------------------------
   David P. Stokes, Treasurer


INTRANET, INC.                          SEAL:


By: /s/ Richard J. Condon, Jr.
   ----------------------------------------
   Richard J. Condon, Jr., President

and

By: /s/ Jonathan M. Edwards
   ----------------------------------------
   Jonathan M. Edwards, Treasurer


SECURITYHOLDERS' REPRESENTATIVE:


By: /s/ Anthony D. Smith
   ----------------------------------------
   Anthony D. Smith