ACTEL CORP
8-K, EX-10, 2000-06-19
SEMICONDUCTORS & RELATED DEVICES
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                                TABLE OF CONTENTS
                                                                           Page


ARTICLE I THE MERGER 2

         1.1      The Merger.................................................2
         1.2      Effective Time.............................................2
         1.3      Effect of the Merger.......................................2
         1.4      Consideration to Be Paid; Effect on Capital Stock..........2
         1.5      Dissenting Shares..........................................4
         1.6      Surrender of Certificates..................................4
         1.7      No Further Ownership Rights in Prosys Common Stock.........5
         1.8      Lost, Stolen or Destroyed Certificates.....................5
         1.9      Earnout Payments...........................................6
         1.10     Securities Act Compliance..................................7
         1.11     Tax and Accounting Consequences............................8
         1.12     Taking of Necessary Action; Further Action.................8

ARTICLE II REPRESENTATIONS AND WARRANTIES OF THE TARGET PARTIES..............8

         2.1      Organization of Prosys.....................................8
         2.2      Prosys Capital Structure...................................8
         2.3      Subsidiaries...............................................9
         2.4      Authority..................................................9
         2.5      Prosys Financial Statements...............................10
         2.6      No Undisclosed Liabilities................................10
         2.7      No Changes................................................11
         2.8      Tax and Other Returns and Reports.........................12
         2.9      Restrictions on Business Activities.......................14
         2.10     Title to Properties; Absence of Liens and Encumbrances....14
         2.11     Intellectual Property.....................................14
         2.12     Agreements, Contracts and Commitments.....................16
         2.13     Interested Party Transactions.............................17
         2.14     Compliance with Laws......................................18
         2.15     Litigation................................................18
         2.16     Insurance.................................................18
         2.17     Minute Books..............................................18
         2.18     Environmental Matters.....................................18
         2.19     Brokers'and Finders'Fees; Third Party Expenses............18
         2.20     Employee Matters and Benefit Plans........................19
         2.21     Covenants.................................................22
         2.22     Representations Complete..................................22

ARTICLE III REPRESENTATIONS AND WARRANTIES OF BUYER.........................22

         3.1      Organization, Standing and Power..........................22
         3.2      Authority.................................................22
         3.3      Capital Structure.........................................23
         3.4      SEC Documents; Actel Financial Statements.................23
         3.5      No Material Adverse Change................................24
         3.6      Litigation................................................24

ARTICLE IV CONDUCT PRIOR TO THE EFFECTIVE TIME..............................24

         4.1      Conduct of Business of Prosys.............................24
         4.2      No Solicitation...........................................26
         4.3      Strategic Agreements......................................27
         4.4      Employee Hiring...........................................27

ARTICLE V ADDITIONAL AGREEMENTS.............................................27

         5.1      Prosys Shareholder Approval...............................27
         5.2      Access to Information.....................................27
         5.3      Expenses..................................................28
         5.4      Public Disclosure.........................................28
         5.5      Consents..................................................28
         5.6      FIRPTA Compliance.........................................28
         5.7      Reasonable Efforts........................................28
         5.8      Notification of Certain Matters...........................29
         5.9      Tax Treatment.............................................29
         5.10     Additional Documents and Further Assurances...............29
         5.11     Form S-8..................................................29
         5.12     Nasdaq Listing............................................29
         5.13     Blue Sky Laws.............................................29
         5.14     Indemnification...........................................29
         5.15     Prosys Options............................................29

ARTICLE VI CONDITIONS TO THE MERGER.........................................30

         6.1      Conditions to Obligations of Each Party to Effect
                     the Merger.............................................30
         6.2      Additional Conditions to Obligations of Prosys............30
         6.3      Additional Conditions to the Obligations of Actel.........31

ARTICLE VII SURVIVAL OF REPRESENTATIONS AND WARRANTIES; INDEMNIFICATION.....32

         7.1      Survival..................................................32
         7.2      Indemnification Provisions for Benefit of Actel...........32
         7.3      Procedure for Indemnification Claims; Matters Involving
                     Third Parties..........................................33
         7.4      Exclusivity of Contractual Remedy.........................34
         7.5      Securityholder Representative.............................34

ARTICLE VIII TERMINATION, AMENDMENT AND WAIVER..............................34

         8.1      Termination...............................................34
         8.2      Effect of Termination.....................................35
         8.3      Amendment.................................................36
         8.4      Extension; Waiver.........................................36

ARTICLE IX GENERAL PROVISIONS...............................................36

         9.1      Notices...................................................36
         9.2      Interpretation............................................38
         9.3      Counterparts..............................................38
         9.4      Entire Agreement; Assignment..............................38
         9.5      Severability..............................................38
         9.6      Other Remedies............................................38
         9.7      Governing Law.............................................39
         9.8      Rules of Construction.....................................39
         9.9      Specific Performance......................................39


<PAGE>


                      AGREEMENT AND PLAN OF REORGANIZATION

         This Agreement and Plan of  Reorganization  (this  "Agreement") is made
and entered  into as of June 2, 2000  between  Actel  Corporation,  a California
corporation  ("Actel"),  Prosys  Technology,   Inc.,  a  California  corporation
("Prosys"),  and Jung-Cheun  "Frank" Lien,  Sheng "Jason" Feng,  Chung Sun, Eddy
Huang and Nan Horng Yeh (the foregoing individuals  collectively the "Officers")
(Prosys  and  the  Officers  collectively  the  "Target  Parties")  (all  of the
foregoing collectively the "Parties").

                                    RECITALS

         A. The Boards of  Directors  of Prosys  and Actel  believe it is in the
best  interests of each  company and their  respective  shareholders  that Actel
acquire Prosys  through the statutory  merger of Prosys with and into Actel (the
"Merger") and, in furtherance thereof, have approved the Merger.

         B. Occasioned by and immediately  prior to the Merger,  pursuant to the
terms  and  provisions  of  Article  V,  Section  E(1) of  Prosys'  Articles  of
Incorporation,  all shares of  outstanding  Series A  Preferred  Stock of Prosys
("Prosys Series A Preferred Stock") shall  automatically  convert into shares of
Common Stock of Prosys  ("Prosys Common Stock") (Prosys Series A Preferred Stock
and  Prosys  Common  Stock  collectively  "Prosys  Capital  Stock"),  such  that
immediately  prior to the Effective Time (as defined below) the only outstanding
securities  of Prosys  shall be shares of Prosys  Common  Stock and  options  to
acquire  Prosys  Common Stock  outstanding  under Prosys' 1998 Stock Option Plan
(the "Option Plan"), or otherwise (all such options, irrespective of whether and
the extent to which vested or exercisable,  collectively the "Prosys  Options").
Those persons  holding shares of Prosys Common Stock  immediately  following the
aforementioned  automatic  conversion  of Prosys  Series A  Preferred  Stock and
immediately  prior  to  the  Effective  Time  are  referred  to as  the  "Prosys
Shareholders", and those persons holding Prosys Options immediately prior to the
Effective  Time  are  referred  to as the  "Prosys  Optionholders"  (the  Prosys
Shareholders   and   the   Prosys   Optionholders   collectively   the   "Prosys
Securityholders").

         C. Pursuant to the Merger, among other things, and subject to the terms
and conditions of this Agreement,  all of the issued and  outstanding  shares of
Prosys  Common  Stock  shall be  converted  into the right to receive  shares of
Common Stock of Actel ("Actel  Common  Stock") and/or cash, as set forth herein,
and all  outstanding  options to acquire  shares of Prosys Common Stock shall be
assumed by Actel in the manner set forth herein.

         D. The  issuance of a portion of the shares of Actel  Common Stock will
be subject  to and  conditional  upon the  achievement  of  certain  performance
milestones subsequent to the Merger, all as set forth in Section 1.9 hereof.

         E.  Prosys  and  Actel  desire  to  make  certain  representations  and
warranties and other agreements in connection with the Merger.

         NOW,  THEREFORE,  in  consideration  of  the  covenants,  promises  and
representations set forth herein, and for other good and valuable consideration,
intending to be legally bound hereby the parties agree as follows:


                                   ARTICLE I

                                   THE MERGER

     1.1 The  Merger.  At the  Effective  Time (as  defined in Section  1.2) and
subject  to and  upon  the  terms  and  conditions  of  this  Agreement  and the
applicable  provisions of the California  General  Corporation Law  ("California
Law"),  Prosys  shall be merged  with and into  Actel,  the  separate  corporate
existence  of Prosys  shall  cease and Actel  shall  continue  as the  surviving
corporation.

     1.2 Effective Time. Unless this Agreement is earlier terminated pursuant to
Section  8.1,  the  closing of the  Merger  (the  "Closing")  will take place as
promptly as  practicable,  but no later than five (5) business  days,  following
satisfaction or waiver of the conditions set forth in Article VI, at the offices
of Wilson Sonsini Goodrich & Rosati, 650 Page Mill Road, Palo Alto,  California,
unless  another  place or time is agreed to by Actel and  Prosys.  The date upon
which the Closing  actually  occurs is herein referred to as the "Closing Date".
On the Closing Date, the parties hereto shall cause the Merger to be consummated
by (i) filing a  Certificate  of Merger with the Secretary of State of the State
of California  (the  "Certificate  of Merger"),  in accordance with the relevant
provisions of  applicable  law (the time of acceptance by the Secretary of State
of California of such filing being referred to herein as the "Effective  Time").
The parties  currently  intend  that the Closing  Date will occur on or prior to
June 2, 2000.

     1.3 Effect of the Merger.  At the Effective  Time, the effect of the Merger
shall be as provided in the  applicable  provisions of California  Law.  Without
limiting the generality of the foregoing,  and subject thereto, at the Effective
Time,  all the property,  rights,  privileges,  powers and  franchises of Prosys
shall vest in Actel,  and all  debts,  liabilities  and  duties of Prosys  shall
become the debts, liabilities and duties of Actel.

     1.4  Consideration  to Be Paid;  Effect on Capital Stock.  At the Effective
Time,  Actel shall transfer  $6,900,000 and 220,518 shares of Actel Common Stock
to the Prosys Shareholders in exchange for all of the Prosys Common.  Subject to
the terms and conditions of this Agreement,  as of the Effective Time, by virtue
of the Merger and without any action on the part of Actel,  Prosys or any Prosys
Shareholder, the following shall occur:

          (a)  Conversion of Prosys  Common  Stock.  Each share of Prosys Common
     Stock issued and outstanding immediately prior to the Effective Time (other
     than  Dissenting  Shares (as defined and to the extent  provided in Section
     1.5(a)) will be canceled and  extinguished  and be converted  automatically
     into the right to receive,  upon surrender of the certificate  representing
     such share of Prosys  Common  Stock in the manner  provided in Section 1.6:
     (i)  0.0735  shares of Actel  Common  Stock  (the  "Common  Stock  Exchange
     Ratio");  (ii) $2.30;  and (iii) the right to receive  Earnout  Payments as
     provided in Section 1.9 and as limited by Article VII hereof. Any shares of
     Actel Common  Stock  issued in exchange  for shares of Prosys  Common Stock
     which are subject to a repurchase right in favor of Prosys shall be subject
     to an identical repurchase right in favor of Actel.

          (b) Stock Options.  At the Effective Time, all Prosys Options shall be
     assumed by Actel in accordance with provisions described below.

               (i) At the Effective Time, each Prosys Option,  whether vested or
          unvested,  shall be, in connection with the Merger,  assumed by Actel.
          Each  Prosys  Option so assumed by Actel  under this  Agreement  shall
          continue to have, and be subject to, the same terms and conditions set
          forth in the Option Plan and/or as provided in the  respective  option
          agreements  governing  such  Prosys  Option  immediately  prior to the
          Effective  Time,   except  that:  (A)  such  Prosys  Option  shall  be
          exercisable  for that  number of whole  shares of Actel  Common  Stock
          equal to the  product of the number of shares of Prosys  Common  Stock
          that were issuable  upon  exercise of such Prosys  Option  immediately
          prior to the Effective Time multiplied by 0.147 (the "Option  Exchange
          Ratio"),  rounded down to the nearest  whole number of shares of Actel
          Common Stock; (B) the per share exercise price for the shares of Actel
          Common Stock  issuable  upon  exercise of such assumed  Prosys  Option
          shall be equal to the  quotient  determined  by dividing  the exercise
          price per share of Prosys Common Stock at which such Prosys Option was
          exercisable  immediately  prior to the  Effective  Time by the  Option
          Exchange  Ratio,  rounded up to the nearest  whole cent;  and (C) each
          Prosys  Option shall be modified and amended such that (x) such Prosys
          Option  shall  vest  on  a  quarterly   basis,  and  (y)  the  vesting
          commencement date of such Prosys Option shall be the date three months
          prior to the vesting  commencement  date  previously set forth in such
          Prosys Option prior to the Merger.

               (ii) It is the  intention  of the  parties  that  Prosys  Options
          assumed by Actel qualify  following  the  Effective  Time as incentive
          stock  options as  defined  in  Section  422 of the Code to the extent
          Prosys Options qualified as incentive stock options  immediately prior
          to the Effective Time.

               (iii) Promptly  following the Effective Time, Actel will issue to
          each holder of an outstanding Prosys Option a document  evidencing the
          foregoing assumption of such Prosys Option by Actel.

          (c)  Adjustments  to Exchange  Ratio.  The Common Stock Exchange Ratio
     shall be adjusted to reflect  fully the effect of any stock split,  reverse
     split, stock dividend (including any dividend or distribution of securities
     convertible   into   Actel   Common   Stock  or   Prosys   Common   Stock),
     reorganization, recapitalization or other like change with respect to Actel
     Common  Stock or Prosys  Common Stock  occurring  after the date hereof and
     prior to the Effective Time.

          (d)  Fractional  Shares.  No fraction of a share of Actel Common Stock
     will be issued, but in lieu thereof, each holder of shares of Prosys Common
     Stock who would  otherwise  be  entitled  to a fraction of a share of Actel
     Common Stock (after aggregating all fractional shares of Actel Common Stock
     to be received by such  holder)  shall be entitled to receive from Actel an
     amount of cash  (rounded to the nearest whole cent) equal to the product of
     (i) such fraction, multiplied by (ii) $31.29 (the "Value Per Actel Share").

     1.5 Dissenting Shares.

          (a)  Notwithstanding  any provision of this Agreement to the contrary,
     any shares of Prosys  Common  Stock held by a holder who has  demanded  and
     perfected  appraisal or  dissenters'  rights for such shares in  accordance
     with  California Law and who, as of the Effective Time, has not effectively
     withdrawn  or  lost  such  appraisal  or  dissenters'  rights  ("Dissenting
     Shareholders"), shall not be converted into or represent a right to receive
     Actel Common Stock  pursuant to Section 1.6, but the holder  thereof  shall
     only be entitled to such rights as are granted by California Law.

          (b) Notwithstanding the provisions of subsection (a), if any holder of
     shares of Prosys  Common  Stock who demands  appraisal of such shares under
     California  Law shall  effectively  withdraw  or lose  (through  failure to
     perfect or otherwise) the right to appraisal,  then, as of the later of the
     Effective Time and the occurrence of such event, such holder's shares shall
     automatically  be converted  into and  represent  only the right to receive
     Actel  Common  Stock and  fractional  shares as  provided  in Section  1.4,
     without interest  thereon,  upon surrender of the certificate  representing
     such shares.

          (c) Prosys shall give Actel (i) prompt  notice of any written  demands
     for  appraisal of any shares of Prosys Common  Stock,  withdrawals  of such
     demands,  and any other  instruments  served pursuant to California Law and
     received  by  Prosys  and  (ii)  the  opportunity  to  participate  in  all
     negotiations  and  proceedings  with respect to demands for appraisal under
     California  Law. Prosys shall not, except with the prior written consent of
     Actel,  voluntarily  make any  payment  with  respect  to any  demands  for
     appraisal of capital  stock of Prosys or offer to settle or settle any such
     demands.

     1.6 Surrender of Certificates.

          (a) Exchange  Procedures.  Promptly  after the Effective  Time,  Actel
     shall cause to be mailed to each holder of record of a stock certificate or
     certificates (the "Certificates")  which immediately prior to the Effective
     Time  represented  outstanding  shares of Prosys  Common Stock whose shares
     were  converted  into the right to  receive  shares of Actel  Common  Stock
     pursuant  to  Section  1.4(a),  (i) a letter of  transmittal  (which  shall
     specify that delivery shall be effected,  and risk of loss and title to the
     Certificates  shall pass,  only upon delivery of the  Certificates to Actel
     and  shall be in such  form and have  such  other  provisions  as Actel may
     reasonably  specify)  and  (ii)  instructions  for  use  in  effecting  the
     surrender of the  Certificates  in exchange for  certificates  representing
     shares  of  Actel  Common  Stock.  Upon  surrender  of  a  Certificate  for
     cancellation  to Actel or to such other agent or agents as may be appointed
     by Actel,  together  with such letter of  transmittal,  duly  completed and
     validly executed in accordance with the instructions thereto, the holder of
     such  Certificate  shall be  entitled  to  receive in  exchange  therefor a
     certificate  representing the number of whole shares of Actel Common Stock,
     plus cash in lieu of fractional  shares in accordance  with Section 1.4, to
     which such holder is entitled pursuant to Section 1.4(a)(i), and the dollar
     amount specified in Section 1.4(a)(ii),  and the Certificate so surrendered
     shall forthwith be canceled.

          (b) Distributions With Respect to Unexchanged  Shares. No dividends or
     other distributions  declared or made after the Effective Time with respect
     to Actel Common Stock with a record date after the  Effective  Time will be
     paid to the holder of any  unsurrendered  Certificate  with  respect to the
     shares of Actel Common Stock represented thereby until the holder of record
     of such Certificate shall surrender such Certificate. Subject to applicable
     law,  following  surrender of any such Certificate,  there shall be paid to
     the record holder of the  certificates  representing  whole shares of Actel
     Common Stock issued in exchange therefor,  without interest, at the time of
     such  surrender,  the amount of  dividends  or other  distributions  with a
     record date after the Effective Time  theretofore paid with respect to such
     whole shares of Actel Common Stock.

          (c) Transfers of  Ownership.  If any  certificate  for shares of Actel
     Common  Stock is to be  issued  in a name  other  than  that in  which  the
     certificate  surrendered in exchange  therefor is registered,  it will be a
     condition of the issuance  thereof (i) that the  certificate so surrendered
     will be properly  endorsed and otherwise in proper form for transfer,  (ii)
     that the person  requesting  such  exchange  will have paid to Actel or any
     agent  designated  by it any transfer or other taxes  required by reason of
     the issuance of a certificate  for shares of Actel Common Stock in any name
     other than that of the registered holder of the certificate surrendered, or
     established to the satisfaction of Actel or any agent designated by it that
     such tax has been paid or is not payable,  (iii) that either such  transfer
     be registered under the Securities Act or the proposed  transferor provides
     Actel with an opinion of counsel  satisfactory  to Actel to the effect that
     such  transfer  is  exempt  from  the  registration   requirements  of  the
     Securities  Act, and (iv) the proposed  transferee  agrees in writing to be
     bound  by the  provisions  of the  transferor's  Investment  Representation
     Statement.

          (d) No  Liability.  Notwithstanding  anything to the  contrary in this
     Section 1.6,  none of Actel or any party hereto shall be liable to a holder
     of shares of Prosys  Common Stock for any amount  properly paid to a public
     official pursuant to any applicable abandoned property,  escheat or similar
     law.

     1.7 No Further Ownership Rights in Prosys Common Stock. All shares of Actel
Common Stock issued upon the  surrender  for exchange of shares of Prosys Common
Stock in accordance  with the terms hereof  (including  any cash paid in respect
thereof) shall be deemed to have been issued in full  satisfaction of all rights
pertaining to such shares of Prosys Common Stock,  and there shall be no further
registration  of  transfers  on the records of Actel of shares of Prosys  Common
Stock which were outstanding  immediately prior to the Effective Time. If, after
the Effective  Time,  Certificates  are presented to Actel for any reason,  they
shall be canceled and exchanged as provided in this Article I.

     1.8 Lost, Stolen or Destroyed  Certificates.  In the event any certificates
evidencing  shares of Prosys  Common  Stock  shall  have  been  lost,  stolen or
destroyed,  Actel  shall issue in exchange  for such lost,  stolen or  destroyed
certificates,  upon  the  making  of an  affidavit  of that  fact by the  holder
thereof,  such shares of Actel Common Stock and cash for fractional  shares,  if
any, as may be required pursuant to Section 1.4; provided,  however,  that Actel
may, in its  discretion  and as a condition  precedent to the issuance  thereof,
require the owner of such lost,  stolen or destroyed  certificates  to deliver a
bond in such sum as it may reasonably direct as indemnity against any claim that
may be made against Actel with respect to the certificates  alleged to have been
lost, stolen or destroyed.

     1.9 Earnout Payments.

          (a) Schedule of Milestones.  Promptly following the acheivement of any
     of the  following  milestones  within 90 days of the  applicable  milestone
     date, Actel shall pay to the Prosys  Securityholders 39,949 shares of Actel
     Common Stock (each an "Earnout Payment"):

               (i) First  Milestone.  On or before November 30, 2000: The 0.18um
          IP core  product  will be  available  with beta  status,  including  a
          tapeout of the 4x4 silicon, plus software and methodology support that
          has been validated using a suite of test designs.

               (ii) Second Milestone. On or before February 28, 2001: The 0.18um
          IP core product  development is complete,  including  layout databases
          for the 4x2,  2x2 and 2x1  cores,  plus  working  4x4  silicon  and an
          associated development board.

               (iii) Third Milestone.  On or before July 31, 2001: The 0.15um IP
          core product will be available  with beta status,  including a tapeout
          of the 8x8 silicon,  plus  software and  methodology  support that has
          been validated using a suite of test designs.

               (iv) Fourth Milestone. On or before November 30, 2001: The 0.15um
          IP core product  development is complete,  including  layout databases
          for the 8x4,  4x4,  and 4x2 cores,  plus  working  8x8  silicon and an
          associated development board.

                    Actel's  obligation to make the Earnout  Payments  specified
               above is subject to the indemnification and offset provisions set
               forth in Article  VII  hereof.  Assuming  achievement  of all the
               milestones  set forth in this  section  above,  and except to the
               extent  reduced by operation of such Article VII, the total value
               of all  Earnout  Payments  shall  equal  159,795  shares of Actel
               Common Stock.

          (b) Nature of Earnout  Payments.  All Earnout  Payments  shall be paid
     solely in the form of Actel Common Stock.

          (c)  Allocation  and  Mechanics  of Payment.  The total amount of each
     Earnout Payment shall be allocated among the Prosys  Securityholders  based
     on (i) the sum of (A) the total  number of shares of Prosys  Common held by
     such  Securityholder  immediately prior to the Effective Time, plus (B) the
     total number of shares of Prosys Common  issuable upon the exercise in full
     of all Prosys Options held by such Securityholder  immediately prior to the
     Effective Time (assuming  solely for purposes of such  calculation that all
     such Options are vested and exercisable in full at such time,  irrespective
     of whether or not such  Options are in fact vested or  exercisable  at such
     time), divided by (ii) 5,000,000; provided, however, that if the employment
     of any Prosys  Optionholder  has been  terminated  by Actel for "cause," as
     defined in the Offer  Letter  between  Actel and such  Prosys  Optionholder
     dated as of even date herewith, prior to a given Earnout Payment Date, then
     such Optionholder shall not, solely with respect to any Prosys Options held
     by such  Securityholder  immediately  prior  to the  Effective  Time  (such
     Securityholder   shall  not  be  adversely   affected  by  virtue  of  such
     termination  with  respect  to such  Securityholder's  right to  receive  a
     portion of the Earnout  Payment  with  respect to Prosys  Common which such
     Securityholder  may have held immediately  prior to the Effective Time), be
     eligible or entitled to receive any portion of the Earnout  Payment on such
     or any  subsequent  Earnout  Payment  Date and any  portion of the  Earnout
     Payment  allocated to such Prosys  Optionholder  shall be re-allocated on a
     pro rata basis to the  remaining  Propsys  Securityholders.  No  fractional
     shares of Actel Common Stock will be issued with Earnout Payments,  and the
     value of such fractional  shares will be paid in cash at the rate of $31.29
     per whole share of Actel Common Stock.

          (d)  Conduct of Actel's  Business.  Nothing  in this  Agreement  shall
     affect Actel's  ability to operate its business  (including the business of
     Prosys acquired by Actel pursuant to this Agreement) in a manner that Actel
     deems advisable.

     1.10 Securities Act Compliance.

          (a) Securities  Act Exemption.  The issuance of the Actel Common Stock
     in the Merger,  including  shares of Actel Common Stock issued  pursuant to
     the Earnout  Payments,  shall not be registered under the Securities Act of
     1933,  as amended (the  "Securities  Act"),  in reliance upon the exemption
     contained in Section 4(2) of the Securities Act.

          (b) Stock  Restrictions.  The certificates  representing the shares of
     Actel  Common  Stock  issued  pursuant  to  this  Agreement  shall  bear  a
     restrictive  legend (and stop transfer  orders shall be placed  against the
     transfer  thereof  with  Actel's  transfer  agent),  which  legend shall be
     removed in connection with the  registration of such shares under the terms
     of the  Investment  Representation  Statement (as defined  below),  stating
     substantially as follows:

          "THE SHARES  REPRESENTED BY THIS  CERTIFICATE HAVE NOT BEEN REGISTERED
          UNDER THE SECURITIES  ACT OF 1933, AS AMENDED.  SUCH SHARES MAY NOT BE
          SOLD, OFFERED FOR SALE, TRANSFERRED, ASSIGNED OR OTHERWISE DISPOSED OF
          EXCEPT (i) PURSUANT TO AN  EFFECTIVE  REGISTRATION  STATEMENT  RELATED
          THERETO,  (ii) IN  COMPLIANCE  WITH RULE 144 OR (iii)  PURSUANT  TO AN
          OPINION OF COUNSEL  ACCEPTABLE  TO ACTEL IN ITS  DISCRETION  THAT SUCH
          REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933."

          (c)  Investment  Representation  Statement.  The  Prosys  Shareholders
     (other  than  any  shareholders  who  are  eligible  to  become  Dissenting
     Shareholders  as described in Section 1.5 of this  Agreement  and who elect
     not to enter into such an agreement as described herein) shall duly execute
     and deliver to Actel on or before the Closing  Date,  an  agreement  in the
     form  of  Exhibit  A  attached  hereto  (the   "Investment   Representation
     Statement"),  setting forth, among other things,  certain restrictions upon
     the transferability of Actel Common Stock in compliance with the Securities
     Act.

     1.11 Tax and Accounting Consequences.  It is intended by the parties hereto
that the Merger  shall (i)  constitute  a  reorganization  within the meaning of
Section 368 of the Internal  Revenue  Code of 1986,  as amended (the "Code") and
(ii) be treated for accounting purposes as a purchase of Prosys by Actel.

     1.12 Taking of Necessary Action;  Further Action. If, at any time after the
Effective  Time,  any such further action is necessary or desirable to carry out
the  purposes of this  Agreement  and to vest Actel with full  right,  title and
possession to all assets, property, rights, privileges, powers and franchises of
Prosys,  the officers and directors of Actel, are hereby fully authorized in the
name of Actel, Prosys or otherwise to take all such lawful action.

                                   ARTICLE II

              REPRESENTATIONS AND WARRANTIES OF THE TARGET PARTIES

     The Target Parties  hereby  jointly and severally  represent and warrant to
Actel,  subject to such  exceptions as are clearly  disclosed in the  disclosure
letter supplied by Prosys to Actel (the  "Disclosure  Schedule") and dated as of
the date hereof, as follows:

     2.1 Organization of Prosys. Prosys is a corporation duly organized, validly
existing and in good standing under the laws of the State of California.  Prosys
has the corporate  power to own its  properties  and to carry on its business as
now  being  conducted.  Prosys  is duly  qualified  to do  business  and in good
standing as a foreign  corporation in each  jurisdiction in which the failure to
be so qualified  would have a material  adverse  effect on the business,  assets
(including intangible assets), financial condition or results of operations (any
such effect  hereinafter  referred to as a "Material Adverse Effect") of Prosys.
Prosys has  delivered a true and correct copy of its  Articles of  Incorporation
and Bylaws, each as amended to date, to counsel for Actel.

     2.2 Prosys Capital Structure.

          (a) Capital Stock. The authorized  capital stock of Prosys consists of
     5,000,000 shares of authorized  Common Stock, of which no shares are issued
     and outstanding,  and 3,000,000  shares of authorized  Preferred Stock. All
     3,000,000 shares of the authorized  Preferred Stock have been designated as
     Series A  Preferred  Stock,  of  which  3,000,000  shares  are  issued  and
     outstanding.  Prosys  Series A  Preferred  Stock is held of  record  by the
     persons,  with the  addresses  of record  and in the  amounts  set forth on
     Schedule 2.2(a).  All outstanding shares of Prosys Series A Preferred Stock
     are duly authorized,  validly issued, fully paid and non-assessable and not
     subject  to  preemptive   rights  created  by  statute,   the  Articles  of
     Incorporation  or Bylaws of Prosys or any  agreement  to which  Prosys is a
     party or by which it is bound.

          (b) Options.  Prosys has reserved 2,000,000 shares of Common Stock for
     issuance to employees and consultants pursuant to the Option Plan, of which
     2,000,000  shares are subject to  outstanding,  unexercised  options and no
     shares remain  available for future grant.  Schedule  2.2(b) sets forth for
     each outstanding  Prosys Option the name of the holder of such option,  the
     number of shares of Common Stock subject to such option, the exercise price
     of such option and the vesting  schedule  for such  option,  including  the
     extent  vested to date,  and whether the  vesting of such  options  will be
     accelerated by the transactions contemplated by this Agreement.  Except for
     Prosys  Options  described  in  Schedule  2.2(b),  there  are  no  options,
     warrants,  calls,  rights,  commitments  or  agreements  of any  character,
     written  or  oral,  to  which  Prosys  is a party  or by  which it is bound
     obligating Prosys to issue,  deliver,  sell, repurchase or redeem, or cause
     to be issued,  delivered,  sold,  repurchased  or  redeemed,  any shares of
     Prosys  Capital  Stock.  Except for Prosys  Options  described  in Schedule
     2.2(b),  there are no options,  warrants,  calls,  rights,  commitments  or
     agreements of any character, written or oral, to which Prosys is a party or
     by which it is bound  obligating  Prosys to grant,  extend,  accelerate the
     vesting  of,  change the price of,  otherwise  amend or enter into any such
     option,  warrant,  call,  right,  commitment or  agreement.  The holders of
     Prosys Options and any outstanding  warrants have been or will be given, or
     shall have properly waived, any required notice prior to the Merger and all
     such notice rights will be terminated at or prior to the Effective Time.

     2.3  Subsidiaries.  Prosys does not have and has never had any subsidiaries
or affiliated companies and does not otherwise own and has never otherwise owned
any  shares of  capital  stock or any  interest  in,  or  control,  directly  or
indirectly, any other corporation,  partnership,  association,  joint venture or
other business entity.

     2.4  Authority.  Subject only to the  requisite  approval of the Merger and
this Agreement by Prosys' shareholders, Prosys has all requisite corporate power
and authority to enter into this  Agreement and to consummate  the  transactions
contemplated  hereby. The vote required of Prosys'  shareholders to duly approve
the Merger and this  Agreement  is that number of shares as would  constitute  a
majority of the outstanding  shares of (a) the Common Stock and Preferred Stock,
voting together as a single class, and (b) the Preferred Stock voting separately
as a single  class  (in each  case  with each  share of  Preferred  Stock  being
entitled  to a number of votes  equal to the  number  of whole  shares of Common
Stock into which such share of Preferred  Stock could be converted on the record
date for the  vote).  The  execution  and  delivery  of this  Agreement  and the
consummation of the transactions  contemplated  hereby have been duly authorized
by all  necessary  corporate  action on the part of Prosys,  subject only to the
approval of the Merger by Prosys'  shareholders.  Prosys' Board of Directors has
unanimously approved the Merger and this Agreement. This Agreement has been duly
executed and  delivered by Prosys and,  assuming due  execution  and delivery by
Actel,  constitutes the valid and binding  obligation of Prosys,  enforceable in
accordance with its terms.  Except as set forth on Schedule 2.4, subject only to
the  approval  of the Merger and this  Agreement  by Prosys'  shareholders,  the
execution  and  delivery of this  Agreement  by Prosys does not,  and, as of the
Effective Time, the  consummation of the transactions  contemplated  hereby will
not,  conflict  with,  or result in any  violation of, or default under (with or
without  notice  or  lapse  of  time,  or  both),  or give  rise  to a right  of
termination,  cancellation  or  acceleration  of any  obligation  or loss of any
benefit under (any such event,  a "Conflict")  (i) any provision of the Articles
of  Incorporation  or Bylaws of Prosys or (ii) any mortgage,  indenture,  lease,
contract  or other  agreement  or  instrument,  permit,  concession,  franchise,
license,  judgment,  order, decree, statute, law, ordinance,  rule or regulation
applicable to Prosys or its properties or assets. No consent,  waiver, approval,
order or  authorization  of, or  registration,  declaration  or filing with, any
court,  administrative  agency or commission or other  federal,  state,  county,
local or foreign governmental authority,  instrumentality,  agency or commission
("Governmental  Entity") or any third party (so as not to trigger any Conflict),
is required by or with respect to Prosys in  connection  with the  execution and
delivery of this Agreement or the consummation of the transactions  contemplated
hereby,  except  for (i) the  filing  of the  Certificate  of  Merger  with  the
California Secretary of State, (ii) such consents, waivers,  approvals,  orders,
authorizations, registrations, declarations and filings as may be required under
applicable  federal  and state  securities  laws and (iii) such other  consents,
waivers,  authorizations,  filings,  approvals and  registrations  which are set
forth on Schedule 2.4.

     2.5 Prosys  Financial  Statements.  Schedule 2.5 sets forth Prosys' audited
balance  sheet as of December  31, 1999 and the related  audited  statements  of
operations and cash flows for the year then ended (the "Audited Financials") and
Prosys'  unaudited  balance sheet as of March 31, 2000 (the "Balance Sheet") and
the  related  unaudited   statements  of  operations  and  cash  flows  for  the
three-month  period then ended (together with the Balance Sheet,  the "Unaudited
Financials") (collectively,  the Audited Financials and the Unaudited Financials
are referred to as the "Prosys  Financials").  Prosys  Financials are correct in
all  material  respects  and have been  prepared in  accordance  with  generally
accepted accounting principles ("GAAP") applied on a basis consistent throughout
the periods  indicated and  consistent  with each other.  The Prosys  Financials
present fairly the financial condition and operating results of Prosys as of the
dates and during the  periods  indicated  therein,  subject,  in the case of the
Unaudited Financials, to normal year-end adjustments, which will not be material
in amount or significance.  The Unaudited  Financials  require no notes which do
not appear in the Audited Financials.

     2.6 No Undisclosed Liabilities. Except as set forth in Schedule 2.6, Prosys
does  not  have  any  liability,   indebtedness,   obligation,  expense,  claim,
deficiency,  guaranty or endorsement  of any type,  whether  accrued,  absolute,
contingent, matured, unmatured or other (whether or not required to be reflected
in  financial  statements  in  accordance  with  generally  accepted  accounting
principles),  which individually or in the aggregate, (i) has not been reflected
in the Balance Sheet,  or (ii) has not arisen in the ordinary  course of Prosys'
business  since  March  31,  2000,  consistent  with past  practices.  Except as
disclosed  in  Schedule  2.6, no customer of Prosys has a right of refund or set
off from Prosys which  arises other than from the warranty  provision of Prosys'
standard form of customer agreement, which Prosys has provided to Actel prior to
the date hereof.

     2.7 No Changes.  Except as set forth in Schedule 2.7, since March 31, 2000,
there has not been, occurred or arisen any:

          (a) transaction by Prosys except in the ordinary course of business as
     conducted on that date and consistent with past practices;

          (b) amendments or changes to the Articles of  Incorporation  or Bylaws
     of Prosys;

          (c)  capital  expenditure  or  commitment  by Prosys of $25,000 in any
     individual case or $75,000 in the aggregate.

          (d)  destruction  of,  damage to or loss of any  assets,  business  or
     customer of Prosys (whether or not covered by insurance)  which resulted or
     could  reasonably  be  expected  to result in losses to Prosys of more than
     $10,000;

          (e) labor  trouble or claim of wrongful  discharge  or other  unlawful
     labor practice or action;

          (f) change in accounting methods or practices (including any change in
     depreciation or amortization policies or rates) by Prosys;

          (g) revaluation by Prosys of any of its assets;

          (h)  declaration,  setting  aside or payment  of a  dividend  or other
     distribution  with respect to the capital stock of Prosys, or any direct or
     indirect redemption,  purchase or other acquisition by Prosys of any of its
     capital  stock other than  pursuant to the  exercise of  repurchase  rights
     under stock option agreements;

          (i) increase in the salary or other compensation  payable or to become
     payable by Prosys to any of its officers, directors, employees or advisors,
     or the declaration, payment or commitment or obligation of any kind for the
     payment,  by Prosys,  of a bonus or other additional salary or compensation
     to any such person except as otherwise contemplated by this Agreement;

          (j) sale, lease,  license or other disposition of any of the assets or
     properties  of  Prosys,  except  in the  ordinary  course  of  business  as
     conducted on that date and consistent with past practices;

          (k) amendment or  termination of any material  contract,  agreement or
     license to which Prosys is a party or by which it is bound;

          (l) loan by Prosys to any person or entity, incurring by Prosys of any
     indebtedness,  guaranteeing by Prosys of any indebtedness, issuance or sale
     of any debt  securities of Prosys or guaranteeing of any debt securities of
     others except for advances to employees for travel and business expenses in
     the ordinary course of business, consistent with past practices;

          (m) waiver or release of any right or claim of Prosys,  including  any
     write-off or other compromise of any account receivable of Prosys;

          (n) commencement or notice or threat of commencement of any lawsuit or
     proceeding against or investigation of Prosys or its affairs;

          (o)  notice  of any claim of  ownership  by a third  party of  Prosys'
     Intellectual Property (as defined in Section 2.11 below) or of infringement
     by Prosys of any third party's Intellectual Property rights;

          (p) issuance or sale by Prosys of any of its shares of capital  stock,
     or securities exchangeable,  convertible or exercisable therefor, or of any
     other of its securities  other than the grant of stock options to employees
     or consultants or pursuant to the exercise of employee stock options;

          (q)  change in pricing  or  royalties  set or charged by Prosys to its
     customers or licensees or in pricing or royalties set or charged by persons
     who have licensed Intellectual Property to Prosys;

          (r) event or condition of any character that has, or reasonably  could
     be expected to be capable of having, a Material Adverse Effect on Prosys;

          (s)  agreement  to enter into a  strategic  alliance or grant of third
     party royalty rights; or

          (t) agreement by Prosys or any officer or employees  thereof to do any
     of the things  described  in the  preceding  clauses (a) through (s) (other
     than  negotiations  with  Actel  and  its  representatives   regarding  the
     transactions contemplated by this Agreement).

     2.8 Tax and Other Returns and Reports.

          (a) Definition of Taxes. For the purposes of this Agreement, "Tax" or,
     collectively,  "Taxes", means any and all federal, state, local and foreign
     taxes, assessments and other governmental charges, duties,  impositions and
     liabilities,  including  taxes based upon or  measured  by gross  receipts,
     income,  profits,  sales, use and occupation,  and value added, ad valorem,
     transfer, franchise,  withholding,  payroll, recapture,  employment, excise
     and property  taxes,  together with all  interest,  penalties and additions
     imposed  with  respect  to such  amounts  and  any  obligations  under  any
     agreements  or  arrangements  with any other  person  with  respect to such
     amounts and including any liability for taxes of a predecessor entity.

          (b) Tax Returns and Audits. Except as set forth in Schedule 2.8:

               (i) Prosys as of the Effective  Time will have prepared and filed
          all required  federal,  state,  local and foreign returns,  estimates,
          information statements and reports ("Returns") relating to any and all
          Taxes  concerning or attributable to Prosys or its operations and such
          Returns will have been completed in accordance with applicable law.

               (ii)  Prosys  as of the  Effective  Time:  (A) will  have paid or
          accrued  all Taxes it is  required  to pay or accrue and (B) will have
          withheld  with respect to its  employees  all federal and state income
          taxes, FICA, FUTA and other Taxes required to be withheld.

               (iii)  Prosys has not been  delinquent  in the payment of any Tax
          nor is there any Tax  deficiency  outstanding,  proposed  or  assessed
          against  Prosys,  nor has Prosys executed any waiver of any statute of
          limitations   on  or  extending  the  period  for  the  assessment  or
          collection of any Tax.

               (iv) No audit or other  examination  of any  Return  of Prosys is
          presently in progress, nor has Prosys been notified of any request for
          such an audit or other examination.

               (v) Prosys  does not have any  liabilities  for  unpaid  federal,
          state, local and foreign Taxes which have not been accrued or reserved
          against in accordance with GAAP on the Balance Sheet, whether asserted
          or unasserted, contingent or otherwise, and Prosys has no knowledge of
          any basis for the  assertion  of any such  liability  attributable  to
          Prosys, its assets or operations.

               (vi) Prosys has provided to Actel copies of all federal and state
          income and all state sales and use Tax  Returns for all periods  since
          the date of Prosys' incorporation.

               (vii)  There are (and as of  immediately  following  the  Closing
          there will be) no liens, pledges,  charges, claims, security interests
          or other  encumbrances  of any sort  ("Liens") on the assets of Prosys
          relating to or attributable  to Taxes,  other than Liens for Taxes not
          yet due and payable.

               (viii)  None of Prosys'  assets are  treated as  "tax-exempt  use
          property" within the meaning of Section 168(h) of the Code.

               (ix) As of the  Effective  Time,  there will not be any contract,
          agreement,  plan or  arrangement,  including  but not  limited  to the
          provisions of this Agreement, covering any employee or former employee
          of Prosys that,  individually or collectively,  could give rise to the
          payment of any amount that would not be deductible pursuant to Section
          280G or 162 of the Code.

               (x)  Prosys has not filed any  consent  agreement  under  Section
          341(f)  of the Code or agreed to have  Section  341(f)(2)  of the Code
          apply to any  disposition  of a  subsection  (f) asset (as  defined in
          Section 341(f)(4) of the Code) owned by Prosys.

               (xi)  Prosys  is  not a  party  to a tax  sharing  or  allocation
          agreement nor does Prosys owe any amount under any such agreement.

               (xii) Prosys has (a) never been a member of an  affiliated  group
          (within the meaning of Code ss.1504(a)) filing a consolidated  federal
          income Tax Return  (other than a group the common  parent of which was
          Prosys),  (b) no  liability  for the Taxes of any person  (other  than
          Prosys or any of its subsidiaries)  under Treas. Reg. ss. 1.1502-6 (or
          any similar provision of state, local or foreign law), as a transferee
          or successor,  by contract, or otherwise and (c) never been a party to
          any  joint  venture,  partnership  or other  agreement  that  could be
          treated as a partnership for Tax purposes.

               (xiii)  Prosys  has  not   constituted   either  a  "distributing
          corporation" or a "controlled  corporation" in a distribution of stock
          qualifying for tax-free treatment under Section 355 of the Code (x) in
          the  two  years  prior  to the  date  of  this  Agreement  or (y) in a
          distribution  which  could  otherwise  constitute  part of a "plan" or
          "Series of related transactions" (within the meaning of Section 355(e)
          of the Code) in conjunction with the Merger.

               (xiv)  Prosys  is not,  and has not been at any  time,  a "United
          States  real  property  holding  corporation"  within  the  meaning of
          Section 897(c)(2) of the Code.

     2.9 Restrictions on Business Activities.  There is no agreement (noncompete
or otherwise),  judgment, injunction, order or decree to which Prosys is a party
or otherwise  binding upon Prosys which has or  reasonably  would be expected to
have the effect of prohibiting or impairing any business practice of Prosys, any
acquisition  of property  (tangible or  intangible)  by Prosys or the conduct of
business by Prosys. Without limiting the foregoing,  Prosys has not entered into
any  agreement  under which  Prosys is  restricted  from  selling,  licensing or
otherwise  distributing  any of its products to any class of  customers,  in any
geographic area, during any period of time or in any segment of the market.

     2.10 Title to Properties; Absence of Liens and Encumbrances.

          (a)  Prosys  owns no real  property,  nor has it ever  owned  any real
     property. Schedule 2.10(a) sets forth a list of all real property currently
     leased by Prosys, the name of the lessor and the date of the lease and each
     amendment  thereto.  All such current  leases are in full force and effect,
     are valid and  effective in accordance  with their  respective  terms,  and
     there is not,  under any of such leases,  any existing  default or event of
     default  (or  event  which  with  notice or lapse of time,  or both,  would
     constitute a default).

          (b)  Prosys  has good and valid  title  to,  or, in the case of leased
     properties and assets,  valid  leasehold  interests in, all of its tangible
     properties and assets,  real,  personal and mixed,  used or held for use in
     its  business,  free  and  clear  of  any  Liens  (as  defined  in  Section
     2.8(b)(vii)),  except as  reflected  in Prosys  Financials  or in  Schedule
     2.10(b).

     2.11 Intellectual Property.

          (a)  Prosys  owns,  or is  licensed  or  otherwise  possesses  legally
     enforceable rights to use, all patents,  trademarks,  trade names,  service
     marks, copyrights,  mask works, and any applications therefor,  schematics,
     technology,  know-how,  computer software programs or applications (in both
     source code and object code form),  and tangible or intangible  proprietary
     information or material that are used in the business of Prosys,  including
     without limitation Prosys' field programmable gate array  architecture,  as
     currently  conducted  or as proposed to be  conducted by Prosys (all of the
     foregoing collectively the "Prosys Intellectual Property Rights").

          (b)  Schedule  2.11(a)  sets  forth a  complete  list of all  patents,
     registered and material  unregistered  trademarks,  registered  copyrights,
     trade names and service marks,  mask works, and any applications  therefor,
     included in Prosys  Intellectual  Property  Rights,  and  specifies,  where
     applicable,  the  jurisdictions  in which  each  such  Prosys  Intellectual
     Property Right has been issued or registered or in which an application for
     such issuance and  registration  has been filed,  including the  respective
     registration or application numbers and the names of all registered owners.
     Schedule  2.11(b) sets forth a complete list of all licenses,  sublicenses,
     side letters and other  agreements  to which Prosys is a party and pursuant
     to which  Prosys  or any  other  person  is  authorized  to use any  Prosys
     Intellectual  Property  Right  (excluding  object  code  end-user  licenses
     granted to end-users in the ordinary  course of business that permit use of
     software  products without a right to modify,  distribute or sublicense the
     same  ("End-User  Licenses"))  or trade secret of Prosys,  and includes the
     identity of all parties thereto.  Except as set forth on Schedules  2.11(a)
     or 2.11(b), the execution and delivery of this Agreement by Prosys, and the
     consummation of the transactions  contemplated  hereby,  will neither cause
     Prosys to be in violation or default under any such license,  sublicense or
     agreement,  nor entitle any other party to any such license,  sublicense or
     agreement to terminate or modify such  license,  sublicense  or  agreement.
     Except as set forth in Schedules 2.11(a) or 2.11(b), Prosys is the sole and
     exclusive  owner or licensee of, with all right,  title and interest in and
     to (free and clear of any liens or encumbrances),  the Prosys  Intellectual
     Property   Rights,   and  has  sole  and  exclusive   rights  (and  is  not
     contractually  obligated  to pay any  compensation  to any  third  party in
     respect  thereof) to the use  thereof or the  material  covered  thereby in
     connection  with the  services  or  products  in  respect  of which  Prosys
     Intellectual Property Rights are being used.

          (c) No claims with respect to Prosys Intellectual Property Rights have
     been asserted or are, to Prosys'  knowledge,  threatened by any person, nor
     are there any valid grounds for any bona fide claims (i) to the effect that
     the  manufacture,  sale,  licensing or use of any of the products of Prosys
     infringes on any copyright,  patent,  trade mark,  service mark, mask work,
     trade secret or other proprietary  right, (ii) against the use by Prosys of
     any  trademarks,  service marks,  trade names,  trade secrets,  copyrights,
     patents, mask works, technology, know-how or computer software programs and
     applications used in Prosys' business as currently conducted or as proposed
     to be conducted by Prosys,  or (iii)  challenging  the ownership by Prosys,
     validity or  effectiveness of any of Prosys  Intellectual  Property Rights.
     All registered trademarks, service marks, mask works and copyrights held by
     Prosys  are valid  and  subsisting.  The  business  of Prosys as  currently
     conducted  or as  proposed to be  conducted  by Prosys has not and does not
     infringe on any proprietary right of any third party. To Prosys' knowledge,
     there is no unauthorized use,  infringement or  misappropriation  of any of
     Prosys  Intellectual  Property  Rights by any third  party,  including  any
     employee or former  employee  of Prosys.  No Prosys  Intellectual  Property
     Right or  product  of Prosys or any of its  subsidiaries  is subject to any
     outstanding  decree,  order,  judgment,  or stipulation  restricting in any
     manner the licensing thereof by Prosys.  Each employee of and consultant to
     Prosys has executed a proprietary information and confidentiality agreement
     substantially in Prosys' standard forms.

          (d) Prosys  software  products and associated  documentation  that are
     part  of the  Prosys  Intellectual  Property  Rights  are  production-level
     versions of such software technology; any Prosys software products that are
     works in process or  beta-level  software are  identified  and disclosed as
     such in Schedule 2.11(d).

     2.12 Agreements, Contracts and Commitments. Except as set forth on Schedule
2.12(a), Prosys does not have, is not a party to nor is it bound by:

               (i) any collective bargaining agreements,

               (ii) any  agreements or  arrangements  that contain any severance
          pay or post-employment liabilities or obligations,

               (iii) any bonus, deferred compensation,  sales compensation plan,
          pension,  profit  sharing or retirement  plans,  or any other employee
          benefit plans or  arrangements  or agreements to change any such plans
          whether written or oral,

               (iv) any  employment or consulting  agreement with an employee or
          individual  consultant,  or any  consulting or sales  agreement  under
          which a firm or other organization provides services to Prosys,

               (v) any agreement or plan,  including,  without  limitation,  any
          stock option plan,  stock  appreciation  rights plan or stock purchase
          plan,  any of the benefits of which will be increased,  or the vesting
          of benefits of which will be accelerated,  by the occurrence of any of
          the transactions contemplated by this Agreement or the value of any of
          the  benefits of which will be  calculated  on the basis of any of the
          transactions contemplated by this Agreement,

               (vi) any fidelity or surety bond or completion bond,

               (vii) any lease of personal property having a value  individually
          in excess of $25,000,

               (viii) any agreement of indemnification or guaranty,

               (ix) any agreement  containing any covenant  limiting the freedom
          of Prosys to engage in any line of  business  or to  compete  with any
          person,

               (x) any agreement relating to capital  expenditures and involving
          future payments in excess of $25,000,

               (xi) any agreement  relating to the disposition or acquisition of
          assets or any interest in any business enterprise outside the ordinary
          course of Prosys' business,

               (xii) any  mortgages,  indentures,  loans or  credit  agreements,
          security agreements or other agreements or instruments relating to the
          borrowing  of money  or  extension  of  credit,  including  guaranties
          referred to in clause (viii) hereof,

               (xiii) any  purchase  order or contract  for the  purchase of raw
          materials or services involving $10,000 or more,

               (xiv) any construction contracts,

               (xv) any distribution, joint marketing or development agreement,

               (xvi) any  agreement  pursuant to which Prosys has granted or may
          grant in the future,  to any party a source-code  license or option or
          other  right  to use or  acquire  source-code,  or  (xvii)  any  other
          agreement that involves  $25,000 or more or is not cancelable  without
          penalty within thirty (30) days.

     Except for such alleged breaches,  violations and defaults, and events that
would constitute a breach,  violation or default with the lapse of time,  giving
of  notice,  or both,  as are all  noted in  Schedule  2.12(b),  Prosys  has not
breached,  violated or defaulted under, or received notice that it has breached,
violated or defaulted  under,  any of the terms or conditions of any  agreement,
contract or commitment  required to be set forth on Schedule 2.12(a) or Schedule
2.11(b)  (any such  agreement,  contract  or  commitment,  a  "Contract").  Each
Contract  is in full force and effect  and,  except as  otherwise  disclosed  in
Schedule 2.12(b),  is not subject to any default  thereunder of which Prosys has
knowledge by any party obligated to Prosys pursuant thereto.

     2.13 Interested Party  Transactions.  Except as set forth on Schedule 2.13,
to Prosys'  knowledge,  no officer,  director  or  affiliate  (as defined  under
Regulation C under the  Securities  Act of 1933,  as amended) of Prosys (nor any
ancestor,  sibling,  descendant or spouse of any of such persons,  or any trust,
partnership  or  corporation  in  which  any of such  persons  has or has had an
economic  interest),  has or has had,  directly or  indirectly,  (i) an economic
interest in any entity which furnished or sold, or furnishes or sells,  services
or products that Prosys  furnishes or sells,  or proposes to furnish or sell, or
(ii) an  economic  interest  in any  entity  that  purchases  from or  sells  or
furnishes to,  Prosys,  any goods or services or (iii) a beneficial  interest in
any contract or  agreement  set forth in Schedule  2.12(a) or Schedule  2.11(b);
provided, that (x) ownership of no more than one percent (1%) of the outstanding
voting stock of a publicly traded corporation and no more than ten percent (10%)
of the  outstanding  equity of any other entity shall not be deemed an "economic
interest in any entity" for purposes of this Section 2.13 and (y) this provision
shall  only  apply  if the  terms  and  conditions  applicable  to  the  subject
relationship  are  materially  less  favorable  to  Prosys  than the  terms  and
conditions that could be obtained in an arms-length relationship.

     2.14 Compliance with Laws. Prosys has complied in all respects with, is not
in violation of, and has not received any notices of violation  with respect to,
any foreign, federal, state or local statute, law or regulation.

     2.15 Litigation.  Except as set forth in Schedule 2.15, there is no action,
suit or  proceeding  of any nature  pending or to Prosys'  knowledge  threatened
against  Prosys,  its  properties or any of its officers or directors,  in their
respective  capacities as such. Except as set forth in Schedule 2.15, to Prosys'
knowledge,  there is no investigation  pending or threatened against Prosys, its
properties  or any of its officers or  directors  by or before any  governmental
entity. Schedule 2.15 sets forth, with respect to any such pending or threatened
action, suit,  proceeding or investigation,  the forum, the parties thereto, the
subject  matter  thereof  and the  amount of  damages  claimed  or other  remedy
requested.  No governmental  entity has at any time challenged or questioned the
legal right of Prosys to  manufacture,  offer or sell any of its products in the
present manner or style thereof.

     2.16 Insurance.  With respect to the insurance  policies and fidelity bonds
covering the assets, business,  equipment,  properties,  operations,  employees,
officers and directors of Prosys,  there is no claim by Prosys 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 due and
payable under all such policies and bonds have been paid and Prosys is otherwise
in compliance  with the terms of such policies and bonds (or other  policies and
bonds  providing  substantially  similar  insurance  coverage).  Prosys  has  no
knowledge of any threatened termination of, or premium increase with respect to,
any of such policies.

     2.17 Minute Books. The minute books of Prosys made available to counsel for
Actel are the only  minute  books of Prosys and  contain a  reasonably  accurate
summary of all meetings of directors (or committees thereof) and shareholders or
actions by written consent since the time of incorporation of Prosys.

     2.18  Environmental  Matters.  Prosys (i) is in compliance with any and all
applicable foreign,  federal,  state and local laws and regulations  relating to
the protection of human health and safety, the environment or hazardous or toxic
substances or wastes,  pollutants or contaminants  ("Environmental  Laws"), (ii)
has received all permits,  licenses or other approvals required under applicable
Environmental  Laws to conduct its business and (iii) is in compliance  with all
terms and conditions of any such permit, license or approval. There are no costs
or  liabilities  (including any capital or operating  expenditures  required for
clean-up,  closure of properties or compliance  with  Environmental  Laws or any
permit, license or approval, any related constraints on operating activities and
any  potential  liabilities  to third  parties)  other than as  disclosed in the
Financial Statements.

     2.19 Brokers' and Finders' Fees; Third Party Expenses.  Except as set forth
on  Schedule  2.19,  Prosys has not  incurred,  nor will it incur,  directly  or
indirectly,  any liability for brokerage or finders' fees or agents' commissions
or any similar  charges in  connection  with this  Agreement or any  transaction
contemplated hereby. Schedule 2.19 sets forth the principal terms and conditions
of any agreement, written or oral, with respect to such fees. Schedule 2.19 sets
forth  Prosys'  current  reasonable  estimate  of all Third Party  Expenses  (as
defined in Section 5.3) expected to be incurred by Prosys in connection with the
negotiation  and  effectuation of the terms and conditions of this Agreement and
the transactions contemplated hereby.

     2.20 Employee Matters and Benefit Plans.

          (a)  Definitions.  With the exception of the definition of "Affiliate"
     set forth in Section  2.20(a)(i) below (such definition shall only apply to
     this Section 2.20),  for purposes of this  Agreement,  the following  terms
     shall have the meanings set forth below:

               (i)  "Affiliate"  shall  mean any other  person  or entity  under
          common control with Prosys within the meaning of Section 414(b),  (c),
          (m) or (o) of the Code and the regulations thereunder;

               (ii) "ERISA" shall mean the Employee  Retirement  Income Security
          Act of 1974, as amended;

               (iii) "Prosys  Employee  Plan" shall refer to any plan,  program,
          policy, practice,  contract,  agreement or other arrangement providing
          for  compensation,  severance,  termination pay,  performance  awards,
          stock or  stock-related  awards,  fringe  benefits  or other  employee
          benefits or  remuneration  of any kind,  whether  formal or  informal,
          funded or  unfunded,  including  without  limitation,  each  "employee
          benefit plan", within the meaning of Section 3(3) of ERISA which is or
          has been maintained, contributed to, or required to be contributed to,
          by Prosys or any  Affiliate  for the  benefit  of any  "Employee"  (as
          defined  below),  and pursuant to which Prosys or any Affiliate has or
          may have any liability contingent or otherwise;

               (iv)  "Employee"  shall  mean any  current,  former,  or  retired
          employee, officer, or director of Prosys or any Affiliate;

               (v)  "Employee   Agreement"   shall  refer  to  each  management,
          employment,   severance,   consulting,    relocation,    repatriation,
          expatriation,  visa,  work  permit or similar  agreement  or  contract
          between Prosys or any Affiliate and any Employee or consultant;

               (vi) "IRS" shall mean the Internal Revenue Service;

               (vii)  "Multiemployer  Plan"  shall mean any  "Pension  Plan" (as
          defined below) which is a "multiemployer  plan", as defined in Section
          3(37) of ERISA; and

               (viii)  "Pension  Plan" shall refer to each Prosys  Employee Plan
          which is an "employee  pension  benefit  plan",  within the meaning of
          Section 3(2) of ERISA.

          (b) Schedule.  Schedule 2.20(b) contains an accurate and complete list
     of each Prosys Employee Plan and each Employee  Agreement,  together with a
     schedule of all liabilities, whether or not accrued, under each such Prosys
     Employee Plan or Employee  Agreement.  Prosys does not have any stated plan
     or  commitment  to  establish  any new  Prosys  Employee  Plan or  Employee
     Agreement, to modify any Prosys Employee Plan or Employee Agreement (except
     to the extent  required by law or to conform any such Prosys  Employee Plan
     or Employee  Agreement to the  requirements  of any applicable law, in each
     case as  previously  disclosed to Actel in writing,  or as required by this
     Agreement),  or  to  enter  into  any  Prosys  Employee  Plan  or  Employee
     Agreement.

          (c)  Documents.  Prosys has provided to Actel (i) correct and complete
     copies of all documents  embodying or relating to each Prosys Employee Plan
     and each Employee  Agreement  including all amendments  thereto and written
     interpretations  thereof; (ii) the most recent annual actuarial valuations,
     if any, prepared for each Prosys Employee Plan; (iii) the three most recent
     annual reports (Series 5500 and all schedules  thereto),  if any,  required
     under ERISA or the Code in  connection  with each Prosys  Employee  Plan or
     related  trust;  (iv) if Prosys  Employee  Plan is funded,  the most recent
     annual and periodic accounting of Prosys Employee Plan assets; (v) the most
     recent  summary plan  description  together with the most recent summary of
     material  modifications,  if any, required under ERISA with respect to each
     Prosys  Employee  Plan;  (vi) all IRS  determination  letters  and  rulings
     relating  to Prosys  Employee  Plans and  copies  of all  applications  and
     correspondence  to or from the IRS or the  Department of Labor ("DOL") with
     respect to any Prosys Employee Plan; (vii) all  communications  material to
     any  Employee or  Employees  relating to any Prosys  Employee  Plan and any
     proposed Prosys  Employee Plans, in each case,  relating to any amendments,
     terminations,   establishments,   increases   or   decreases  in  benefits,
     acceleration  of payments or vesting  schedules or other events which would
     result in any liability to Prosys;  and (viii) all registration  statements
     and prospectuses prepared in connection with each Prosys Employee Plan.

          (d) Employee Plan Compliance. Except as set forth on Schedule 2.20(d),
     (i) Prosys has performed in all material respects all obligations  required
     to be  performed  by it under each  Prosys  Employee  Plan and each  Prosys
     Employee Plan has been established and maintained in all material  respects
     in accordance  with its terms and in compliance  with all applicable  laws,
     statutes, orders, rules and regulations, including but not limited to ERISA
     or the Code;  (ii) no  "prohibited  transaction",  within  the  meaning  of
     Section 4975 of the Code or Section 406 of ERISA, has occurred with respect
     to any Prosys  Employee Plan;  (iii) there are no actions,  suits or claims
     pending,  or, to the knowledge of Prosys,  threatened or anticipated (other
     than  routine  claims for  benefits)  against any Prosys  Employee  Plan or
     against  the  assets of any  Prosys  Employee  Plan;  and (iv) each  Prosys
     Employee Plan can be amended,  terminated or otherwise  discontinued  after
     the  Effective  Time in  accordance  with its terms,  without  liability to
     Prosys, Actel or any of its Affiliates (other than ordinary  administration
     expenses  typically  incurred  in a  termination  event);  (v) there are no
     inquiries  or  proceedings  pending or, to the  knowledge  of Prosys or any
     affiliates,  threatened  by the  IRS  or DOL  with  respect  to any  Prosys
     Employee  Plan; and (vi) neither Prosys nor any Affiliate is subject to any
     penalty  or tax with  respect  to any Prosys  Employee  Plan under  Section
     402(i) of ERISA or Section 4975 through 4980 of the Code.

          (e)  Pension  Plans.  The  Prosys  does  not  now,  nor  has it  ever,
     maintained, established, sponsored, participated in, or contributed to, any
     Pension  Plan which is subject to Part 3 of Subtitle B of Title I of ERISA,
     Title IV of ERISA or Section 412 of the Code.

          (f) Multiemployer  Plans. At no time has Prosys contributed to or been
     requested to contribute to any Multiemployer Plan.

          (g) No  Post-Employment  Obligations.  Except as set forth in Schedule
     2.20(g), no Prosys Employee Plan provides, or has any liability to provide,
     life insurance, medical or other employee benefits to any Employee upon his
     or her retirement or  termination  of employment for any reason,  except as
     may be required by statute,  and Prosys has never represented,  promised or
     contracted  (whether  in oral or  written  form)  to any  Employee  (either
     individually  or to  Employees as a group) that such  Employee(s)  would be
     provided with life insurance,  medical or other employee  welfare  benefits
     upon their  retirement or termination  of employment,  except to the extent
     required by statute.

          (h) Effect of Transaction.

               (i) Except as provided in Section 1.6 of this Agreement or as set
          forth on Schedule 2.20(h)(i),  the execution of this Agreement and the
          consummation of the transactions  contemplated hereby will not (either
          alone or upon the occurrence of any  additional or subsequent  events)
          constitute  an  event  under  any  Prosys   Employee  Plan,   Employee
          Agreement,  trust  or loan  that  will or may  result  in any  payment
          (whether of severance pay or otherwise), acceleration,  forgiveness of
          indebtedness,   vesting,   distribution,   increase   in  benefits  or
          obligation to fund benefits with respect to any Employee.

               (ii) Except as set forth on Schedule  2.20(h)(ii),  no payment or
          benefit  which  will or may be made by Prosys or Actel or any of their
          respective   affiliates   with  respect  to  any   Employee   will  be
          characterized as an "excess parachute payment",  within the meaning of
          Section 280G(b)(1) of the Code.

          (i)  Employment  Matters.   Prosys  (i)  is  in  compliance  with  all
     applicable  foreign,  federal,  state and local laws, rules and regulations
     respecting  employment,  employment  practices,  terms  and  conditions  of
     employment  and wages and hours,  in each case,  with respect to Employees;
     (ii)  has  withheld  all  amounts  required  by law or by  agreement  to be
     withheld from the wages, salaries and other payments to Employees; (iii) is
     not liable for any arrears of wages, commissions, bonuses or any other type
     of  compensation or any taxes or any penalty for failure to comply with any
     of the foregoing;  (iv) is not liable for any payment to any trust or other
     fund or to any governmental or  administrative  authority,  with respect to
     unemployment  compensation  benefits,  social security or other benefits or
     obligations  for Employees  (other than routine  payments to be made in the
     normal course of business and consistent with past practice) and (v) is not
     liable for nor has been  threatened  with any claim for  discrimination  or
     sexual harassment.

          (j) Labor.  No work stoppage or labor strike against Prosys is pending
     or, to the best  knowledge  of Prosys,  threatened.  Except as set forth in
     Schedule 2.20(j), Prosys is not involved in or, to the knowledge of Prosys,
     threatened with, any labor dispute,  grievance,  or litigation  relating to
     labor, safety or discrimination matters involving any Employee,  including,
     without  limitation,  charges of unfair labor  practices or  discrimination
     complaints,  which, if adversely determined,  would, individually or in the
     aggregate,  result in  liability to Prosys.  Neither  Prosys nor any of its
     subsidiaries  has engaged in any unfair labor practices  within the meaning
     of the National  Labor  Relations Act which would,  individually  or in the
     aggregate,  directly or indirectly result in a liability to Prosys.  Except
     as set forth in Schedule 2.20(j), Prosys is not presently,  nor has it been
     in the past, a party to, or bound by, any collective  bargaining  agreement
     or union  contract with respect to Employees  and no collective  bargaining
     agreement is being negotiated by Prosys.

     2.21 Covenants.  At the Effective Time,  Prosys will have complied with all
of  its  covenants  contained  in  this  Agreement,  including  those  covenants
contained in Section 4 hereto.

     2.22  Representations  Complete.  None of the representations or warranties
made by Prosys (as modified by Disclosure  Schedule),  nor any statement made in
any Schedule or certificate  furnished by Prosys pursuant to this Agreement,  or
furnished  in or in  connection  with  documents  mailed  or  delivered  to  the
shareholders  of Prosys in  connection  with  soliciting  their  consent to this
Agreement and the Merger,  contains or will contain at the Effective  Time,  any
untrue statement of a material fact, or omits or will omit at the Effective Time
to state any material fact necessary in order to make the  statements  contained
herein or therein,  in the light of the  circumstances  under  which  made,  not
misleading.


                                  ARTICLE III

                     REPRESENTATIONS AND WARRANTIES OF BUYER

     Actel represents and warrants to Prosys as follows:

     3.1  Organization,   Standing  and  Power.  Actel  is  a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
California.  Actel has the corporate power to own its properties and to carry on
its business as now being  conducted and is duly qualified to do business and is
in good  standing in each  jurisdiction  in which the failure to be so qualified
would have a material  adverse  effect on the ability of Actel to consummate the
transactions contemplated hereby. Actel is not in violation of the provisions of
its Articles of Incorporation or Bylaws.

     3.2  Authority.  Actel has all requisite  corporate  power and authority to
enter  into this  Agreement  and to  consummate  the  transactions  contemplated
hereby. The execution and delivery of this Agreement and the consummation of the
transactions  contemplated  hereby have been duly  authorized  by all  necessary
corporate action on the part of Actel. This Agreement has been duly executed and
delivered  by  Actel  and,  assuming  due  execution  and  delivery  by  Prosys,
constitutes  the  valid  and  binding  obligations  of  Actel,   enforceable  in
accordance with its terms. The execution and delivery of this Agreement by Actel
does not, and, as of the Effective Time, the  consummation  of the  transactions
contemplated  hereby will not,  conflict with, or result in any violation of, or
default under (with or without  notice or lapse of time, or both),  or give rise
to a right of  termination,  cancellation  or  acceleration of any obligation or
loss of any  material  benefit  under (i) any  provision of the  Certificate  of
Incorporation  or  Bylaws  of Actel or (ii) any  material  mortgage,  indenture,
lease, contract or other agreement or instrument, permit, concession, franchise,
license,  judgment,  order, decree, statute, law, ordinance,  rule or regulation
applicable  to Actel or its  properties  or assets  which  could  reasonably  be
expected to have a Material Adverse Effect on Actel.

     3.3 Capital Structure.

          (a) The  authorized  stock of Actel  consists of 55,000,000  shares of
     Common Stock, of which 23,028,365  shares were issued and outstanding as of
     March 31, 2000, and 5,000,000 shares of Preferred  Stock,  none of which is
     issued or outstanding.  All such shares have been duly authorized,  and all
     such issued and outstanding shares have been validly issued, are fully paid
     and nonassessable and are free of any liens or encumbrances  other than any
     liens or encumbrances created by or imposed upon the holders thereof.

          (b) The  shares of Actel  Common  Stock to be issued  pursuant  to the
     Merger  will  be  duly   authorized,   validly   issued,   fully  paid  and
     non-assessable.

     3.4 SEC Documents; Actel Financial Statements.  Actel has furnished or made
available to Prosys true and complete  copies of Actel's  Annual  Report on Form
10-K for the fiscal year ended December 31, 1999 and Actel's proxy  statement in
connection  with its Annual Meeting of  Shareholders to be held on May 19, 2000,
and of all other reports or registration statements filed by Actel with the U.S.
Securities and Exchange Commission (the "SEC") under the Securities Exchange Act
of 1934 (the  "Exchange  Act") on or after  January 1, 2000,  all in the form so
filed  (all  of  the  foregoing  being  collectively  referred  to as  the  "SEC
Documents").  As of their respective filing dates, the SEC Documents complied in
all material respects with the requirements of the Exchange Act, and none of the
SEC Documents  contained  any untrue  statement of a material fact or omitted to
state a material  fact  required to be stated  therein or  necessary to make the
statements made therein,  in light of the circumstances in which they were made,
not misleading,  except to the extent corrected by a subsequently filed document
with the SEC. The financial  statements of Actel,  including the notes  thereto,
included in the SEC Documents (the "Actel  Financial  Statements")  comply as to
form in all material respects with applicable  accounting  requirements and with
the published rules and regulations of the SEC with respect  thereto,  have been
prepared  in  accordance   with   generally   accepted   accounting   principles
consistently  applied  (except as may be  indicated  in the notes  thereto)  and
present fairly the consolidated financial position of Actel at the dates thereof
and of its operations and cash flows for the periods then ended (subject, in the
case of unaudited  statements,  to normal audit adjustments).  There has been no
change in Actel  accounting  policies  except as  described  in the notes to the
Actel Financial Statements.

     3.5 No  Material  Adverse  Change.  Since  the  date of the  balance  sheet
included in Actel's most recently filed report on Form 10-Q or Form 10-K,  Actel
has  conducted  its business in the ordinary  course and there has not occurred:
(a) any material adverse change in the financial condition,  liabilities, assets
or  business  of  Actel;  (b)  any  amendment  or  change  in  the  Articles  of
Incorporation  or Bylaws of Actel; or (c) any damage to,  destruction or loss of
any assets of Actel,  (whether or not covered by insurance)  that materially and
adversely affects the financial condition or business of Actel.

     3.6 Litigation. There is no action, suit, proceeding, claim, arbitration or
investigation pending, or as to which Actel has received any notice of assertion
against Actel which in any manner  challenges or seeks,  or reasonably  could be
expected, to prevent,  enjoin, alter or materially delay any of the transactions
contemplated by this Agreement.

                                   ARTICLE IV

                       CONDUCT PRIOR TO THE EFFECTIVE TIME

     4.1 Conduct of Business of Prosys.  During the period from the date of this
Agreement and continuing  until the earlier of the termination of this Agreement
and the Effective  Time,  Prosys  agrees  (except to the extent that Actel shall
otherwise consent in writing) to carry on its business in the usual, regular and
ordinary course in substantially the same manner as heretofore conducted, to pay
its debts and Taxes when due, to pay or perform other obligations when due, and,
to the extent  consistent  with such  business,  to use all  reasonable  efforts
consistent  with past  practice  and  policies  to  preserve  intact its present
business  organization,  keep available the services of its present officers and
key  employees  and preserve  their  relationships  with  customers,  suppliers,
distributors, licensors, licensees, and others having business dealings with it,
all with the goal of preserving  unimpaired its goodwill and ongoing  businesses
at the Effective  Time.  Prosys shall  promptly  notify Actel of any  materially
negative  event  related  to  Prosys  or  its  business.   Except  as  expressly
contemplated  by this Agreement or disclosed in Schedule 4.1,  Prosys shall not,
without the prior written consent of Actel:

          (a) Enter  into any  commitment  or  transaction  not in the  ordinary
     course of business.

          (b) Transfer to any person or entity any rights to Prosys Intellectual
     Property  Rights (other than pursuant to End-User  Licenses in the ordinary
     course of business);

          (c) Enter  into or amend any  agreements  pursuant  to which any other
     party is granted  marketing,  distribution or similar rights of any type or
     scope or any third party  royalty  rights with  respect to any  products of
     Prosys;

          (d)  Amend or  otherwise  modify  (or  agree to do so),  except in the
     ordinary course of business, or violate the terms of, any of the agreements
     set forth or described in the Disclosure Schedule;

          (e) Commence any litigation or any dispute resolution process;

          (f)  Declare,  set  aside or pay any  dividends  on or make any  other
     distributions (whether in cash, stock or property) in respect of any of its
     capital stock, or split,  combine or reclassify any of its capital stock or
     issue or authorize  the issuance of any other  securities in respect of, in
     lieu of or in  substitution  for  shares of  capital  stock of  Prosys,  or
     repurchase, redeem or otherwise acquire, directly or indirectly, any shares
     of its capital  stock (or  options,  warrants or other  rights  exercisable
     therefor)  other  than  pursuant  to  the  exercise  of  repurchase  rights
     contained in stock option agreements;

          (g)  Except for the  issuance  of shares of Prosys  Common  Stock upon
     exercise or conversion of presently  outstanding  Prosys  Options or Prosys
     Series A Preferred  Stock,  or the grant of stock  options to new employees
     with Actel's prior approval,  issue, grant, deliver or sell or authorize or
     propose the  issuance,  grant,  delivery or sale of, or purchase or propose
     the purchase of, any shares of its capital stock or securities  convertible
     into, or subscriptions,  rights,  warrants or options to acquire,  or other
     agreements or commitments of any character  obligating it to issue any such
     shares or other convertible securities;

          (h) Cause or permit any amendments to its Articles of Incorporation or
     Bylaws;

          (i) Acquire or agree to acquire by merging or  consolidating  with, or
     by purchasing  any assets or equity  securities of, or by any other manner,
     any business or any corporation, partnership, association or other business
     organization or division thereof,  or otherwise acquire or agree to acquire
     any  assets  in an amount  in  excess  of  $25,000  in the case of a single
     transaction or in excess of $50,000 in the aggregate in any 30-day period;

          (j) Sell, lease, license or otherwise dispose of any of its properties
     or assets, except in the ordinary course of business;

          (k) Incur any indebtedness for borrowed money other than from Actel or
     guarantee  any such  indebtedness  or issue or sell any debt  securities of
     Prosys or guarantee any debt securities of others;

          (l) Grant any  severance  or  termination  pay (i) to any  director or
     officer or (ii) to any other  employee  except  payments  made  pursuant to
     standard written agreements outstanding on the date hereof;

          (m) Subject to the provisions of Section 4.5 below, adopt or amend any
     employee  benefit  plan,  or enter  into any  employment  contract,  extend
     employment  offers,  pay or  agree  to pay any  special  bonus  or  special
     remuneration to any director or employee,  or increase the salaries or wage
     rates of its employees,  except as consistent  with the ordinary  course of
     Prosys consistent with past practice  (provided that the price per share of
     any equity participation in Prosys shall be agreed in advance by Actel);

          (n) Revalue any of its assets,  including without  limitation  writing
     down the value of  inventory  or writing off notes or  accounts  receivable
     other than in the ordinary course of business;

          (o) Pay,  discharge or satisfy,  in an amount in excess of $25,000 (in
     any one case) or  $50,000  (in the  aggregate),  any  claim,  liability  or
     obligation  (absolute,  accrued,  asserted  or  unasserted,  contingent  or
     otherwise),  other  than the  payment,  discharge  or  satisfaction  in the
     ordinary course of business of liabilities reflected or reserved against in
     Prosys  Financial  Statements  (or the notes  thereto) or that arose in the
     ordinary  course  of  business  subsequent  to March 31,  2000 or  expenses
     consistent  with the  provisions of this  Agreement  incurred in connection
     with any transaction contemplated hereby;

          (p) Make or change any material election in respect of Taxes, adopt or
     change any  accounting  method in respect of Taxes,  enter into any closing
     agreement,  settle any claim or assessment in respect of Taxes,  or consent
     to any extension or waiver of the limitation period applicable to any claim
     or assessment in respect of Taxes;

          (q) Enter into or modify any new or existing  agreements for the lease
     or purchase of real property; or

          (r) Take, or agree in writing or otherwise to take, any of the actions
     described in Sections  4.1(a)  through (q) above,  or any other action that
     would  prevent  Prosys from  performing  or cause Prosys not to perform its
     covenants hereunder.

     4.2 No Solicitation. Until the earlier of the Effective Time or the date of
termination of this Agreement  pursuant to the provisions of Section 8.1 hereof,
Prosys  will not (nor will  Prosys  permit any of Prosys'  officers,  directors,
agents,  representatives  or affiliates to) directly or indirectly,  take any of
the  following  actions with any party other than Actel and its  designees:  (a)
solicit,  conduct  discussions  with or engage in negotiations  with any person,
relating  to the  possible  acquisition  of  Prosys  or any of its  subsidiaries
(whether  by way of merger,  purchase  of capital  stock,  purchase of assets or
otherwise) or any material portion of its or their capital stock or assets,  (b)
provide information with respect to it to any person, other than Actel, relating
to the possible  acquisition  of Prosys  (whether by way of merger,  purchase of
capital stock,  purchase of assets or otherwise) or any material  portion of its
or their capital stock or assets,  (c) enter into an agreement  with any person,
other than Actel,  providing for the  acquisition  of Prosys  (whether by way of
merger,  purchase  of capital  stock,  purchase of assets or  otherwise)  or any
material  portion  of its or  their  capital  stock  or  assets  or (d)  make or
authorize  any  statement,  recommendation  or  solicitation  in  support of any
possible  acquisition  of Prosys or any of its  subsidiaries  (whether by way of
merger,  purchase  of capital  stock,  purchase of assets or  otherwise)  or any
material  portion of its or their capital  stock or assets by any person,  other
than by Actel.  In addition to the  foregoing,  if Prosys  receives prior to the
Effective  Time or the  termination  of this  Agreement  any  offer or  proposal
relating  to any of the above,  Prosys  shall  promptly  notify  Actel  thereof,
including  information as to the identity of the offeror or the party making any
such offer or proposal and the specific terms of such offer or proposal,  as the
case may be, and such other information  related thereto as Actel may reasonably
request.

     4.3  Strategic  Agreements.  Prosys  agrees that it will not enter into any
strategic  alliance,  joint development or joint marketing  agreement during the
period from the date of this Agreement and  continuing  until the earlier of the
termination  of this  Agreement  and the  Effective  Time  unless  it has  first
consulted with Actel's Vice President of Strategic Marketing.

     4.4  Employee  Hiring.  As  soon  as  practicable  after  the  date of this
Agreement,   the  Chief  Executive  Officers  of  Actel  and  Prosys  (or  their
representatives) will agree upon the guidelines within which Prosys will proceed
with  recruitment,  compensation  and equity  participation  of new and existing
employees.  The parties currently  contemplate that all employees of Prosys will
be offered  employment with Actel. All such employees of Prosys will be required
to execute Actel's standard forms of offer letters and non-disclosure agreements
prior to becoming employees of Actel.

                                   ARTICLE V

                              ADDITIONAL AGREEMENTS

     5.1 Prosys  Shareholder  Approval.  As  promptly as  practicable  after the
execution  of  this  Agreement,  Prosys  shall  submit  this  Agreement  and the
transactions  contemplated  hereby to its shareholders for approval and adoption
as provided by  California  Law and its  Articles of  Incorporation  and Bylaws.
Prosys  shall use its best  efforts  to solicit  and  obtain the  consent of its
shareholders  sufficient to approve the Merger and this  Agreement and to enable
the Closing to occur as promptly as  practicable.  The  materials  submitted  to
Prosys'  shareholders  shall be  subject  to review  and  approval  by Actel and
include information regarding Prosys, the terms of the Merger and this Agreement
and the unanimous recommendation of the Board of Directors of Prosys in favor of
the Merger and this Agreement provided,  however,  that such recommendation need
not be included, or may be withdrawn,  to the extent that the Board of Directors
of  Prosys  deems  it  necessary  to do so in  the  exercise  of  its  fiduciary
obligations  to the holders of Prosys'  Capital  Stock after being so advised by
counsel.

     5.2  Access  to   Information.   Subject  to  any  applicable   contractual
confidentiality obligations (which Prosys shall use its best efforts to cause to
be waived)  Prosys  shall afford  Actel and its  accountants,  counsel and other
representatives,  reasonable  access  during  normal  business  hours during the
period  prior  to the  Effective  Time  to (a)  all  of its  properties,  books,
contracts,  agreements and records, and (b) all other information concerning the
business,   properties  and  personnel  (subject  to  restrictions   imposed  by
applicable  law) of it as  Actel  may  reasonably  request.  No  information  or
knowledge  obtained  in any  investigation  pursuant  to this  Section 5.2 shall
affect or be deemed to modify any representation or warranty contained herein or
the conditions to the obligations of the parties to consummate the Merger.

     5.3  Expenses.  Whether  or not the  Merger  is  consummated,  all fees and
expenses incurred in connection with the Merger including,  without  limitation,
all legal,  accounting,  financial  advisory,  consulting and all other fees and
expenses of third parties incurred by a party in connection with the negotiation
and  effectuation  of the  terms  and  conditions  of  this  Agreement  and  the
transactions  contemplated  hereby  ("Third  Party  Expenses"),   shall  be  the
obligation of the  respective  party  incurring  such fees and expenses.  Prosys
agrees that Actel may submit a Claim (as defined in Article VII) for the amount,
if any, by which Prosys' Third Party Expenses exceed $25,000.

     5.4 Public Disclosure. Unless otherwise required by law (including, without
limitation,  securities  laws) or, as to Actel,  by the rules and regulations of
the Nasdaq National Market,  prior to the Effective Time, Actel and Prosys shall
consult with each other before making any disclosure (whether or not in response
to an inquiry)  of the  subject  matter of this  Agreement  or the  transactions
contemplated  hereby, and no public  announcement or press release regarding the
subject matter of this Agreement or the transactions  contemplated thereby shall
be made by any  party  hereto  unless  approved  by Actel  and  Prosys  prior to
release, provided that such approval shall not be unreasonably withheld.

     5.5 Consents. Prosys shall obtain all consents, waivers and approvals under
any of the  Contracts as may be required in  connection  with the Merger (all of
such consents,  waivers and approvals are set forth in the Disclosure  Schedule)
so as to preserve all material rights of, and benefits to, Prosys thereunder.

     5.6 FIRPTA Compliance. On the Closing Date, Prosys shall deliver to Actel a
properly  executed  statement  in a form  reasonably  acceptable  to  Actel  for
purposes of satisfying  Actel's  obligations under Treasury  Regulation  Section
1.1445-2(c)(3).

     5.7 Reasonable  Efforts.  Subject to the terms and  conditions  provided in
this Agreement,  each of the parties hereto shall use its reasonable  efforts to
take promptly,  or cause to be taken, all actions, and to do promptly,  or cause
to be done, all things necessary,  proper or advisable under applicable laws and
regulations  to  consummate  and make  effective the  transactions  contemplated
hereby to obtain all necessary waivers, consents and approvals and to effect all
necessary  registrations  and  filings  and to remove any  injunctions  or other
impediments  or delays,  legal or  otherwise,  in order to  consummate  and make
effective the  transactions  contemplated  by this  Agreement for the purpose of
securing to the parties  hereto the  benefits  contemplated  by this  Agreement;
provided that Actel shall not be required to agree to any  divestiture  by Actel
or Prosys or any of  Actel's  subsidiaries  or  affiliates  of shares of capital
stock or of any  business,  assets or property of Actel or its  subsidiaries  or
affiliates  or Prosys  or its  affiliates,  or the  imposition  of any  material
limitation on the ability of any of them to conduct  their  businesses or to own
or exercise control of such assets, properties and stock.

     5.8  Notification  of Certain  Matters.  Prosys shall give prompt notice to
Actel,  and Actel shall give prompt notice to Prosys,  of (i) the  occurrence or
nonoccurrence  of any event,  the occurrence or nonoccurrence of which is likely
to cause any  representation  or  warranty  of  Prosys  or Actel,  respectively,
contained in this  Agreement to be untrue or inaccurate in any material  respect
at or prior to the  Effective  Time  except as  contemplated  by this  Agreement
(including the Disclosure  Schedule) and (ii) any failure of Prosys or Actel, as
the case may be, to comply with or satisfy in any material respect any covenant,
condition  or  agreement  to be  complied  with or  satisfied  by it  hereunder;
provided,  however, that the delivery of any notice pursuant to this Section 5.8
shall  not  limit or  otherwise  affect  any  remedies  available  to the  party
receiving such notice.

     5.9 Tax  Treatment.  Neither  Actel nor Prosys  shall take any action which
reasonably   would  be  expected  to  jeopardize  the  tax-free  nature  of  the
reorganization hereunder.

     5.10 Additional Documents and Further Assurances. Each party hereto, at the
request  of the other  party  hereto,  shall  execute  and  deliver  such  other
instruments and do and perform such other acts and things as may be necessary or
desirable for effecting  completely the  consummation  of this Agreement and the
transactions contemplated hereby.

     5.11 Form S-8.  Actel shall file a  registration  statement on Form S-8 for
the shares of Actel Common Stock issuable with respect to assumed Prosys Options
as soon as practicable after the Effective Date.

     5.12  Nasdaq  Listing.  Actel  shall  authorize  for  listing on the Nasdaq
National Market the shares of Actel Common Stock issuable, and those required to
be reserved for issuance, in connection with the Merger, upon official notice of
issuance.

     5.13 Blue Sky Laws.  Actel  shall  take such steps as may be  necessary  to
comply  with the  securities  and blue sky laws of all  jurisdictions  which are
applicable  to the issuance of the Actel Common Stock  pursuant  hereto.  Prosys
shall use its best  efforts to assist  Actel as may be  necessary to comply with
the  securities and blue sky laws of all  jurisdictions  which are applicable in
connection with the issuance of Actel Common Stock pursuant hereto.

     5.14  Indemnification.  Actel shall indemnify the persons who are currently
officers and directors of Prosys  substantially in accordance with the Bylaws of
Prosys as they are  currently  in effect for action or  inaction  by such person
prior to the Merger.

     5.15 Prosys Options

     Upon the  involuntary  termination by Actel of the employment of Jung-Cheun
Lien, Sheng Feng, Chung Sun, Eddy Haung, Tong Liu, David Xiong,  Yaun-chung Hsu,
Naihui Liao,  Chih-Ping Lin  (individually the "Employee") other than for cause,
Actel agrees to vest in full all Prosys  Options held by such persons which have
been  assumed by Actel in the Merger.  As used  herein,  "cause"  shall mean (i)
theft,  embezzlement  or fraud by the Employee or the Employee's  involvement in
any other scheme or conspiracy  pursuant to which the Company has lost assets to
the  Employee or to others  calculated  by the  Employee to receive such assets,
(ii)  incapacity  on the job by reason  of the use of  alcohol  or drugs,  (iii)
commission  of a  felony  or a  crime  involving  moral  turpitude,  (iv)  gross
insubordination,  (v)  unexplained  and  continuous  absences  from  work,  (vi)
substantial  breach by the Employee of any of the  provisions of this  Agreement
which is not cured  within 30  business  days after the  Company  sends  written
notice thereof to the Employee  specifying  the nature of such breach,  or (vii)
material violation by the Employee of any of the Company's  substantive policies
and procedures  which is not cured within a reasonable  period of time given the
circumstance of the violation.

                                   ARTICLE VI

                            CONDITIONS TO THE MERGER

     6.1  Conditions  to  Obligations  of Each Party to Effect the  Merger.  The
respective  obligations  of each  party to this  Agreement  to effect the Merger
shall be subject to the satisfaction at or prior to the Closing of the following
conditions:

          (a)  Shareholder  Approval.  This  Agreement and the Merger shall have
     been  approved and adopted by the  shareholders  of Prosys by the requisite
     vote under applicable law and Prosys' Articles of Incorporation.

          (b) No Injunctions or Restraints; Illegality. No temporary restraining
     order,  preliminary  or permanent  injunction  or other order issued by any
     court of competent  jurisdiction or other legal or regulatory  restraint or
     prohibition preventing the consummation of the Merger shall be in effect.

          (c) Tax Opinion.  Actel shall have  received  substantially  identical
     written  opinions from their  counsel,  Wilson  Sonsini  Goodrich & Rosati,
     Professional  Corporation in form and substance reasonably  satisfactory to
     Actel,  to the effect  that the Merger  will  constitute  a  reorganization
     within the meaning of Section 368(a) of the Code.

     6.2  Additional  Conditions to Obligations  of Prosys.  The  obligations of
Prosys to  consummate  the  Merger  and the  transactions  contemplated  by this
Agreement  shall be subject to the  satisfaction  at or prior to the  Closing of
each of the  following  conditions,  any of which  may be  waived,  in  writing,
exclusively by Prosys:

          (a) Representations and Warranties. The representations and warranties
     of Actel  contained in this  Agreement  shall be true and correct and as of
     the Closing,  except for changes  contemplated by this Agreement and except
     for those representations and warranties which address matters only as of a
     particular date (which shall remain true and correct as of such date), with
     the same  force  and  effect  as if made on and as of the  Effective  Time,
     except, in all such cases, for such breaches,  inaccuracies or omissions of
     such  representations  and warranties which neither have had nor reasonably
     would be expected to have a Material  Adverse  Effect on Actel;  and Prosys
     shall have received a certificate  to such effect signed on behalf of Actel
     by a duly authorized officer of Actel.

          (b) Agreements  and Covenants.  Actel shall have performed or complied
     (which  performance  or compliance  shall be subject to Actel's  ability to
     cure as provided in Section 8.1(e) below) in all material respects with all
     agreements  and  covenants  required by this  Agreement  to be performed or
     complied  with by it on or prior to the  Effective  Time,  and Prosys shall
     have received a  certificate  to such effect signed on behalf of Actel by a
     duly authorized officer of Actel.

          (c) Legal  Opinion.  Prosys shall have  received a legal  opinion from
     Wilson  Sonsini  Goodrich & Rosati,  Professional  Corporation,  counsel to
     Actel, in substantially the form attached hereto as Exhibit B.

          (d)  Material  Adverse  Change.  There  shall  not have  occurred  any
     material  adverse  change in the  business,  assets  (including  intangible
     assets),  financial condition or results of operations of Actel since March
     31, 2000. For purposes of this condition,  a reduction in the trading price
     of Actel's  Common  Stock,  whether  occurring  at any time or from time to
     time,  as reported  by Nasdaq or any other  automated  quotation  system or
     exchange shall not constitute a material adverse change.

     6.3 Additional  Conditions to the Obligations of Actel.  The obligations of
Actel  to  consummate  the  Merger  and the  transactions  contemplated  by this
Agreement  shall be subject to the  satisfaction  at or prior to the  Closing of
each of the  following  conditions,  any of which  may be  waived,  in  writing,
exclusively by Actel:

          (a) Representations and Warranties. The representations and warranties
     of Prosys  contained in this Agreement  shall be true and correct on and as
     of the Effective  Time,  except for changes  contemplated by this Agreement
     (including  the Disclosure  Schedule) and except for those  representations
     and warranties  which address  matters only as of a particular  date (which
     shall  remain true and  correct as of such  date),  with the same force and
     effect  as if made on and as of the  Effective  Time,  except,  in all such
     cases, for such breaches, inaccuracies or omissions of such representations
     and warranties  which neither have had nor reasonably  would be expected to
     have a Material  Adverse  Effect on Prosys or Actel;  and Actel  shall have
     received a certificate  to such effect signed on behalf of Prosys by a duly
     authorized officer of Prosys;

          (b) Agreements and Covenants.  Prosys shall have performed or complied
     (which  performance  or compliance  shall be subject to Prosys'  ability to
     cure as provided in Section 8.1(d) below) in all material respects with all
     agreements  and  covenants  required by this  Agreement  to be performed or
     complied with by it on or prior to the Effective Time, and Actel shall have
     received a certificate  to such effect signed on behalf of Prosys by a duly
     authorized officer of Prosys;

          (c)  Third  Party  Consents.  Actel  shall  have been  furnished  with
     evidence  satisfactory  to  it  that  Prosys  has  obtained  the  consents,
     approvals and waivers set forth in Schedule 2.4.

          (d) Legal  Opinion.  Actel shall have  received a legal  opinion  from
     Pacific  Law Group,  legal  counsel to Prosys,  in  substantially  the form
     attached hereto as Exhibit C.

          (e)  Material  Adverse  Change.  There  shall  not have  occurred  any
     material  adverse  change in the  business,  assets  (including  intangible
     assets) financial  condition or results of operations of Prosys since March
     31, 2000.

          (f) Due Diligence.  Actel shall have completed and be satisfied in its
     discretion with the results of all technical,  legal and accounting reviews
     of Prosys' business and shall have successfully  verified data furnished to
     Actel to Prosys.

          (g) Conversion of Preferred  Stock.  All shares of the Prosys Series A
     Preferred Stock shall have converted into Prosys Common Stock in accordance
     with Prosys' Articles of Incorporation.

          (h) Employment Agreement. Jung-Cheun "Frank" Lien, Sheng Feng and Eddy
     Huang  shall  each  have  executed  and  delivered  to Actel an  employment
     agreement  in  form  and  substance  acceptable  to  Actel  and  all of the
     employment agreements shall be in full force and effect.

          (i) Dissenters'  Rights.  No Prosys  shareholder shall have exercised,
     nor shall  any such  shareholder  have any  continuing  right to  exercise,
     appraisal,  dissenters' or similar rights under applicable law with respect
     to their shares by virtue of the Merger.

                                  ARTICLE VII

           SURVIVAL OF REPRESENTATIONS AND WARRANTIES; INDEMNIFICATION

     7.1  Survival.  All of the  representations  and  warranties  of the Target
Parties contained in Article II shall survive the Closing (even if Actel knew or
had reason to know of any misrepresentation or breach of warranty at the time of
Closing)  and  continue  in full force and  effect for a period of sixteen  (16)
months following the Closing (the "Survival  Termination  Date").  The covenants
and  agreements in this  Agreement  shall survive  except to the extent they are
specifically limited by their terms.

     7.2 Indemnification  Provisions for Benefit of Actel. In the event that the
Target   Parties   breach,   or  there  is  any  inaccuracy  in,  any  of  their
representations,  warranties, agreements or covenants contained herein, provided
that Actel makes a written claim for  indemnification in the manner provided for
in this Article VII on or prior to the Survival  Termination Date, then, subject
to Section 7.4 below, the Officers (the  "Indemnifying  Persons") agree (and the
right of all other Prosys  Securityholders  to receive  Earnout  Payments  shall
likewise be wholly subject to and conditional upon the offset provisions of this
Article  as if  they  had  all  similarly  contractually  agreed),  jointly  and
severally,  to indemnify,  defend and hold  harmless  Actel from and against the
entirety of any and all actions, suits, proceedings,  hearings,  investigations,
charges, complaints,  claims, demands, injunctions,  judgments, orders, decrees,
rulings,  damages,  dues,  penalties,  fines, costs,  reasonable amounts paid in
settlement, liabilities,  obligations, taxes, liens, losses, expenses, and fees,
including  court costs and  reasonable  attorneys'  fees and expenses  ("Adverse
Consequences")  Actel  may  suffer  through  and after the date of the claim for
indemnification  resulting from,  arising out of, relating to, in the nature of,
or caused by the breach or inaccuracy.

     7.3 Procedure for Indemnification Claims; Matters Involving Third Parties.

          (a) In the event that Actel  makes a claim  against  the  Indemnifying
     Persons for  indemnification  under  Section  7.2(a) (a "Claim"),  it shall
     notify the Securityholder Representative in writing as to the existence and
     amount of the Claim and the grounds for the Claim (the "Claim Notice").  If
     the  Indemnifying  Persons with respect to such Claim dispute the existence
     or the amount of such Claim, the Securityholder Representative shall notify
     Actel in writing  (with  reasonable  specificity)  within  thirty (30) days
     following the Securityholder  Representative's  receipt of the Claim Notice
     (the "Response Notice"). Upon such an exchange of written notification, the
     parties  will  negotiate  in good faith for up to thirty  (30) days or such
     other period of time as the parties  mutually agree in an effort to resolve
     their differences with respect to such Claim. Following delivery of a Claim
     Notice, and during any negotiation period, Actel may, pending resolution of
     the matter,  reduce the portions of the Earnout Payments  otherwise payable
     to the Prosys Securityholders  pursuant to Section 1.9 by the amount of the
     Claim.  If no Response  Notice is received by Actel within thirty (30) days
     of the Securityholder  Representative's  receipt of the Claim Notice,  then
     the  Indemnified  Party  shall be  entitled  to reduce the  portions of the
     Earnout Payments otherwise payable to the Prosys  Securityholders  pursuant
     to Section 1.9 by the amount of the Claim,  and no  Indemnified  Person nor
     other  Securityholder  shall  have  any  further  right to  challenge  such
     reduction.  If a  Response  Notice  has been  timely  sent to Actel but the
     parties have not resolved their differences with the aforementioned  thirty
     (30) day  negotiation  period,  and Actel has  reduced an  Earnout  Payment
     pursuant to a Claim Notice, and the Indemnifying  Persons wish to challenge
     the amount of such reduction, the Indemnifying Persons may only make such a
     challenge  pursuant  to  arbitration  in  accordance  with the rules of the
     American  Arbitration  Association,  and the  exclusive  venue for any such
     arbitration shall be in Santa Clara County, California.

          (b) If any third party shall  notify  Actel with respect to any matter
     (a  "Third  Party  Claim")  which  may  give  rise to a Claim  against  any
     Indemnifying Person under this Article VII, Actel shall promptly notify the
     Securityholder  Representative thereof in writing; provided,  however, that
     no  delay  on  the  part  of   Actel  in   notifying   the   Securityholder
     Representative   shall  relieve  any  Indemnifying  Person  or  the  Prosys
     Securityholders  from any obligation  hereunder  unless (and then solely to
     the extent) that they are thereby materially prejudiced.

          (c) Actel may defend against, and consent to the entry of any judgment
     or enter into any settlement  with respect to, the Third Party Claim in any
     manner Actel  reasonably may deem  appropriate  (and Actel need not consult
     with, or obtain any consent from, the Securityholder  Representative or any
     Indemnifying Person in connection therewith),  and the Indemnifying Persons
     will  remain  responsible  for any  Adverse  Consequences  Actel may suffer
     resulting from, arising out of, relating to, in the nature of, or caused by
     the Third Party Claim to the fullest  extent  provided in this Article VII.
     Notwithstanding the foregoing sentence, counsel for any Indemnifying Person
     shall be  permitted to monitor  Actel's  defense of a Third Party Claim for
     the purpose of advising the Indemnifying  Person of the status and progress
     of the  defense.  Any such  activity  shall be at the sole  expense  of the
     Indemnifying Person.

     7.4 Exclusivity of Contractual  Remedy.  Actel's sole contractual  recourse
following   the   Closing   for  any  breach  by  the  Target   Parties  of  any
representation,  warranty,  agreement or covenant contained herein, shall be the
recovery of  indemnification  payments  under this Article VII by set-off to the
portions of the Earnout Payments payable to the Prosys Securityholders.  For the
purpose of settlement of an  indemnification  claim or of calculating the number
of shares of Actel  Common  Stock to be excluded  from an Earnout  Payment,  the
value of each share of Actel  Common  Stock shall be the Value Per Actel  Share.
This  provision  shall  not in any way  limit  Actel's  recourse  for  fraud  or
intentional misrepresentation.

     7.5  Securityholder  Representative.   The  Prosys  Securityholders  hereby
appoint  Jung-Cheun  "Frank"  Lien  as  their  agent  and  representative   (the
"Securityholder  Representative") for the purposes of: (i) representing,  acting
for and  binding  each of them for all  purposes  of this  Agreement,  including
without  limitation,  the negotiation of Earnout milestones and payments and the
settlement of any  controversies or  disagreements  between Actel and the Prosys
Securityholders  hereunder;  (ii) receiving or giving any notices to or from the
Prosys Securityholders  hereunder;  and (iii) communicating with Actel or Prosys
as to any matters relating to this Agreement.  In the event  Jung-Cheun  "Frank"
Lien becomes  unable,  unwilling or  unavailable  to serve as the  Shareholders'
Representative,  the  holders  of a  majority  of the  voting  power  of  Prosys
immediately   prior  to  Closing  shall   appoint  a  successor   Securityholder
Representative.  Actel shall be entitled to  presumptively  rely without further
inquiry  upon  all  acts  of,  and   communications   from,  the  Securityholder
Representative  as  being  the  authorized  actions  and  communications  of the
Securityholder  Representative as approved by the Prosys  Securityholders.  Each
Prosys  Shareholder and Officer hereby further agrees that he/she will indemnify
and hold  harmless  the  Securityholder  Representative  for any and all actions
taken by the Securityholder Representative under this Agreement.

                                  ARTICLE VIII

                        TERMINATION, AMENDMENT AND WAIVER

     8.1  Termination.  Except as provided in Section 8.2 below,  this Agreement
may be  terminated  and the Merger  abandoned at any time prior to the Effective
Time:

          (a) by mutual written consent of Prosys and Actel;

          (b) by Actel if (i) the  Closing has not  occurred  within one week of
     the date of execution  and delivery of this  Agreement  (provided  that the
     right to terminate this Agreement under this clause  8.1(b)(i) shall not be
     available  if and to the extent that a willful  failure by Actel to fulfill
     any obligation hereunder has been the cause of, or resulted in, the failure
     of the  Closing to occur on or before such  date);  and by either  Actel or
     Prosys if  either  (ii)  there  shall be a final  nonappealable  order of a
     federal or state court in effect  preventing  consummation of the Merger or
     (iii)  there  shall be any  statute,  rule,  regulation  or order  enacted,
     promulgated   or  issued  or  deemed   applicable  to  the  Merger  by  any
     governmental entity that would make consummation of the Merger illegal;

          (c) by Actel if there shall be any action taken, or any statute, rule,
     regulation or order enacted,  promulgated or issued or deemed applicable to
     the Merger, by any Governmental  Entity,  which would: (i) prohibit Actel's
     or Prosys'  ownership or operation of any portion of the business of Prosys
     or (ii) compel Actel or Prosys to dispose of or hold separate,  as a result
     of the Merger, any portion of the business or assets of Prosys or Actel; in
     either case,  the  unavailability  of which assets or business would have a
     Material  Adverse Effect on Actel or would reasonably be expected to have a
     Material Adverse Effect on Actel's ability to realize the benefits expected
     from the Merger.

          (d) by Actel if it is not in material breach of its obligations  under
     this Agreement and there has been a breach of any representation, warranty,
     covenant or agreement contained in this Agreement on the part of Prosys and
     as a result of such breach the  conditions  set forth in Section  6.3(a) or
     6.3(b), as the case may be, would not then be satisfied; provided, however,
     that if such breach is curable by Prosys  within  thirty (30) days  through
     the exercise of its  reasonable  best  efforts,  then for so long as Prosys
     continues to exercise such  reasonable best efforts Actel may not terminate
     this  Agreement  under this Section  8.1(d) unless such breach is not cured
     within  thirty (30) days (but no cure period shall be required for a breach
     which by its nature cannot be cured);

          (e) by Prosys if it is not in material breach of its obligations under
     this Agreement and there has been a breach of any representation, warranty,
     covenant or agreement  contained in this Agreement on the part of Actel and
     as a result of such breach the  conditions  set forth in Section  6.2(a) or
     6.2(b), as the case may be, would not then be satisfied; provided, however,
     that if such breach is curable by Actel within thirty (30) days through the
     exercise  of its  reasonable  best  efforts,  then  for so  long  as  Actel
     continues to exercise such reasonable best efforts Prosys may not terminate
     this  Agreement  under this Section  8.1(e) unless such breach is not cured
     within  thirty (30) days (but no cure period shall be required for a breach
     which by its nature cannot be cured).

     Where action is taken to terminate this Agreement  pursuant to this Section
8.1, it shall be  sufficient  for such action to be  authorized  by the Board of
Directors of the party taking such action.

     8.2 Effect of Termination. In the event of termination of this Agreement as
provided in Section 8.1, this Agreement  shall  forthwith  become void and there
shall be no liability  or  obligation  on the part of Actel or Prosys,  or their
respective officers,  directors or shareholders under this Agreement,  except to
the extent that such termination results from the willful and intentional breach
by any party hereto of any of its representations,  warranties, or covenants set
forth in this Agreement, in which case the non-breaching party shall be entitled
to receive  from the  breaching  party all of its Third Party  Expenses  and any
expenses  incurred in  connection  with any dispute  arising  from such  willful
breach. Notwithstanding the foregoing, the provisions of Section 5.3 and Article
VIII of this  Agreement  shall  remain in full force and effect and  survive any
termination of this Agreement.

     8.3 Amendment.  Except as is otherwise required by applicable law after the
shareholders of Prosys approve this Agreement,  this Agreement may be amended by
the parties  hereto at any time by execution of an instrument in writing  signed
on behalf of each of the parties hereto;  provided,  however,  that Actel may in
its sole discretion amend this Agreement to provide for the formation of a newly
formed subsidiary and to consummate the merger  contemplated  hereby through the
merger of that subsidiary into Prosys.

     8.4 Extension;  Waiver.  At any time prior to the Effective Time, Actel, on
the one hand, and Prosys, on the other, may, to the extent legally allowed,  (i)
extend the time for the performance of any of the obligations of the other party
hereto,  (ii) waive any inaccuracies in the  representations and warranties made
to such party contained herein or in any document delivered pursuant hereto, and
(iii) waive  compliance with any of the agreements or conditions for the benefit
of such party contained  herein.  Any agreement on the part of a party hereto to
any such  extension or waiver shall be valid only if set forth in an  instrument
in writing signed on behalf of such party.

                                   ARTICLE IX

                               GENERAL PROVISIONS

     9.1  Notices.  All  notices  and  other  communications  pursuant  to  this
Agreement  shall be in writing and deemed to be  sufficient  if  contained  in a
written   instrument  and  shall  be  deemed  given  if  delivered   personally,
telecopied,  sent  by  nationally-recognized  overnight  courier  or  mailed  by
registered or certified mail (return receipt requested), postage prepaid, to the
parties at the  addresses  set forth below or to such other address as the party
to whom notice is to be given may have  furnished to the other parties hereto in
writing in accordance herewith. Any such notice or communication shall be deemed
to have been  delivered  and  received  (A) in the case of personal  delivery or
delivery  by  telecopier,  on the  date of such  delivery,  (B) in the case of a
nationally recognized overnight courier, on the next business day after the date
when sent and (C) in the case of mailing,  on the third  business day  following
that on which the piece of mail containing such communication is posted:

                    (a)    if to Actel, to:

                           Actel Corporation
                           955 E. Arques Avenue
                           Sunnyvale, CA  94086
                           Attn: David L. Van De Hey
                           Telephone No.: (408) 739-1010
                           Facsimile No.: (408) 739-1540
                           Email: [email protected]

                           with a copy to:

                           Wilson Sonsini Goodrich & Rosati, P.C.
                           650 Page Mill Road
                           Palo Alto, California 94304
                           Attn:  Henry P. Massey Jr., Esq.
                           Telephone No.:  (650) 493-9300
                           Facsimile No.:  (650) 493-6811
                           Email: [email protected]

                    (b)    if to Prosys, to:

                           Prosys Technology, Inc.
                           2372 Qume Drive, Suite A
                           San Jose, CA 95131
                           Attn: Frank Lien
                           Telephone No.: (408) 894-7076
                           Facsimile No.: (408) 894-0990
                           Email: [email protected]

                           with a copy to:

                           Pacific Law Group
                           2 North Second Street, Suite 290
                           San Jose, CA  95113
                           Attn: C.P. Chang
                           Telephone No.: (408) 288-8585
                           Facsimile No.: (408) 288-8386
                           Email: [email protected]

                    (c)    if to the Securityholder Representative:

                           Frank Lien
                           c/o Prosys Technology, Inc.
                           2372 Qume Drive, Suite A
                           San Jose, CA 95131
                           Attn: Frank Lien
                           Telephone No.: (408) 894-7076
                           Facsimile No.: (408) 894-0990
                           Email: [email protected]

     9.2  Interpretation.  The words "include,"  "includes" and "including" when
used herein  shall be deemed in each case to be  followed by the words  "without
limitation."  The word "agreement" when used herein shall be deemed in each case
to mean any contract,  commitment or other  agreement,  whether oral or written,
that is legally  binding.  The table of contents and headings  contained in this
Agreement  are for  reference  purposes only and shall not affect in any way the
meaning or interpretation of this Agreement.

     9.3   Counterparts.   This  Agreement  may  be  executed  in  one  or  more
counterparts,  all of which shall be considered  one and the same  agreement and
shall become effective when one or more counterparts have been signed by each of
the parties and  delivered  to the other  party,  it being  understood  that all
parties need not sign the same counterpart.

     9.4  Entire  Agreement;  Assignment.  This  Agreement,  the  schedules  and
Exhibits  hereto,  and the documents and instruments and other  agreements among
the parties hereto referenced  herein: (a) constitute the entire agreement among
the parties with respect to the subject  matter  hereof and  supersede all prior
agreements  and  understandings,  both written and oral,  among the parties with
respect to the subject  matter  hereof;  (b) are not intended to confer upon any
other person any rights or remedies hereunder;  and (c) shall not be assigned by
operation of law or otherwise except as otherwise specifically provided,  except
that Actel may assign  their  respective  rights and delegate  their  respective
obligations hereunder to their respective affiliates.

     9.5 Severability.  In the event that any provision of this Agreement or the
application thereof, becomes or is declared by a court of competent jurisdiction
to be illegal,  void or  unenforceable,  the  remainder of this  Agreement  will
continue in full force and effect and the application of such provision to other
persons or  circumstances  will be  interpreted  so as  reasonably to effect the
intent of the parties hereto.  The parties further agree to replace such void or
unenforceable provision of this Agreement with a valid and enforceable provision
that will achieve,  to the extent  possible,  the  economic,  business and other
purposes of such void or unenforceable provision.

     9.6  Other  Remedies.  Except as  otherwise  provided  herein,  any and all
remedies herein expressly  conferred upon a party will be deemed cumulative with
and not exclusive of any other remedy conferred hereby, or by law or equity upon
such party,  and the exercise by a party of any one remedy will not preclude the
exercise of any other remedy.

     9.7  Governing  Law. This  Agreement  shall be governed by and construed in
accordance with the laws of the State of California, regardless of the laws that
might otherwise govern under applicable principles of conflicts of laws thereof.
Each of the parties  hereto  agrees that  process may be served upon them in any
manner  authorized by the laws of the State of  California  for such persons and
waives  and  covenants  not to assert or plead any  objection  which  they might
otherwise have to such jurisdiction and such process.

     9.8 Rules of  Construction.  The parties  hereto  agree that they have been
represented  by counsel during the  negotiation  and execution of this Agreement
and, therefore, waive the application of any law, regulation, holding or rule of
construction  providing that  ambiguities in an agreement or other document will
be construed against the party drafting such agreement or document.

     9.9 Specific Performance.  The parties hereto agree that irreparable damage
would occur in the event that any of the  provisions of this  Agreement were not
performed in accordance with their specific terms or were otherwise breached. It
is  accordingly  agreed that the parties  shall be entitled to an  injunction or
injunctions to prevent  breaches of this  Agreement and to enforce  specifically
the terms and  provisions  hereof in any court of the United States or any state
having  jurisdiction,  this being in addition to any other  remedy to which they
are entitled at law or in equity.


<PAGE>


     IN WITNESS WHEREOF,  Actel,  Prosys and the Officers (solely as to Articles
II,  VII,  VIII and IX) have caused  this  Agreement  to be signed by their duly
authorized respective officers, all as of the date first written above.


ACTEL CORPORATION                         PROSYS TECHNOLOGY, INC.



By .....................................  By ...................................
   John C. East                              Jung-Cheun "Frank" Lien
   President and Chief Executive             President and Chief Executive
      Officer                                   Officer







OFFICERS:



 ........................................
Jung-Cheun "Frank" Lien



 ........................................
Sheng "Jason" Feng



 ........................................
Chung Sun



 ........................................
Eddy Huang



 ........................................
Nan Horng Yeh

            [Signature Page for Agreement and Plan of Reorganization]


<PAGE>


     IN WITNESS WHEREOF,  each of the Prosys Shareholders  (solely as to Section
7.5 of this  Agreement)  have caused this  Agreement  to be signed by their duly
authorized respective officers, all as of the date first written above.


Leading Enterprises Limited



By:  ........................................
     Name:
     Title:


Koppel Limited



By:  ........................................
     Name:
     Title:


Tai Yuen Venture Capital



By:  ........................................
     Name:
     Title:














            [Signature Page for Agreement and Plan of Reorganization]





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