Document:

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                                                                   EXHIBIT 10.81

                                  EXTENSION TO
                               SEVERANCE AGREEMENT

        This Extension to Severance Agreement (the "Amendment") is made
effective as of February 27, 2002 by and between Catalyst Semiconductor, Inc.,
("Corporation") and Barry Wiley ("Employee") and amends the Severance Agreement
between the Corporation and Employee dated as of September 21, 1999 (the
"Original Agreement"). Terms not otherwise defined in this Amendment shall have
the meaning ascribed to them in the Original Agreement.

                                    RECITALS

        1. Employee is employed by the Corporation.

        2. The Corporation and Employee entered into the Original Agreement with
respect to Employee's employment by the Corporation.

        3. The Company and Employee mutually desire to amend the Original
Agreement to extend the term until April 30, 2003.

                                    AGREEMENT

        In consideration of the mutual convents hereinafter contained, the
Corporation and Employee agree as follows:

        1. Section 1 of the Original Agreement is hereby amended and restated to
read in its entirety as follows:

           INVOLUNTARY TERMINATION. If Employee's employment is terminated as a
           result of Involuntary Termination other than for cause, at any time
           prior to April 30, 2003, Employee will be entitled to consideration
           as defined below.

        2. All other provisions of the Original Agreement shall remain in full
force and effect.

        3. This Amendment may be executed in any number of counterparts, each of
which shall be enforceable against the parties, and all of which together shall
constitute one instrument.

        4. This Amendment shall be governed in all respects by the laws of the
State of California without giving effect to principles of conflicts of law.

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        IN WITNESS WHEREOF, this First Amendment to the Severance Agreement is
hereby executed as of the date first above written.

COMPANY:

CATALYST SEMICONDUCTOR, INC.

By:  /s/ Radu Vanco
----------------------------------
        Radu Vanco
        President & CEO

AGREED TO AND ACCEPTED
THIS 27TH DAY OF FEBRUARY, 2002:

EMPLOYEE:

By: /s/ Barry Wiley
----------------------------------
Name:  Barry Wiley

                                       -2-<PAGE>
                                                                   EXHIBIT 10.82

                                  EXTENSION TO
                               SEVERANCE AGREEMENT

        This Extension to Severance Agreement (the "Amendment") is made
effective as of February 27, 2002 by and between Catalyst Semiconductor, Inc.,
("Corporation") and Frank Reynolds ("Employee") and amends the Severance
Agreement between the Corporation and Employee dated as of May 11, 1999 (the
"Original Agreement"). Terms not otherwise defined in this Amendment shall have
the meaning ascribed to them in the Original Agreement.

                                    RECITALS

        1. Employee is employed by the Corporation.

        2. The Corporation and Employee entered into the Original Agreement with
respect to Employee's employment by the Corporation.

        3. The Company and Employee mutually desire to amend the Original
Agreement to extend the term until April 30, 2003.

                                    AGREEMENT

        In consideration of the mutual convents hereinafter contained, the
Corporation and Employee agree as follows:

        1. Section 1 of the Original Agreement is hereby amended and restated to
read in its entirety as follows:

                INVOLUNTARY TERMINATION. If Employee's employment is terminated
                as a result of Involuntary Termination other than for cause, at
                any time prior to April 30, 2003, Employee will be entitled to
                consideration as defined below.

        2. All other provisions of the Original Agreement shall remain in full
force and effect.

        3. This Amendment may be executed in any number of counterparts, each of
which shall be enforceable against the parties, and all of which together shall
constitute one instrument.

        4. This Amendment shall be governed in all respects by the laws of the
State of California without giving effect to principles of conflicts of law.

<PAGE>

        IN WITNESS WHEREOF, this First Amendment to the Severance Agreement is
hereby executed as of the date first above written.

COMPANY:

CATALYST SEMICONDUCTOR, INC.

By:  /s/ Radu Vanco
----------------------------------
        Radu Vanco
        President & CEO

AGREED TO AND ACCEPTED
THIS 27TH DAY OF FEBRUARY, 2002:

EMPLOYEE:

By:     /s/ Frank Reynolds
----------------------------------
Name:  Frank Reynolds

                                      -2-<PAGE>
                                                                   EXHIBIT 10.84

                          CATALYST SEMICONDUCTOR, INC.

                           Change of Control Agreement

         This Change of Control ("Agreement") is made as of this ___ day of
______________ 2002 between _______________ ("Director") and Catalyst
Semiconductor, Inc. ("Corporation").

                                   WITNESSETH

         WHEREAS, Director is a member of the Corporation's Board of Directors;

         WHEREAS, Director has previously been granted and will be granted in
the future options to purchase shares of the Corporation's common stock in
consideration of his or her services as a member of the Board of Directors; and

         WHEREAS, the Company and Director mutually desire to enter into an
agreement with respect to the treatment of all options granted to Director in
connection with his or her role as such in connection with a Change of Control
(as defined below) of the Company.

         NOW, THEREFORE, in consideration of the mutual convents hereinafter
contained, the Company and Director agree as follows:

         1. Treatment of Stock Options. Immediately prior to a Change of Control
any and all stock options held by Director, whether granted and subject to the
occurrence of pursuant to the Director Option Plan, the 1998 Special Equity
Incentive Plan or otherwise, shall become immediately fully vested and
exercisable and shall not be subject to forfeiture. In such event, all options
granted to Director in connection with Director's service as a member of the
Company's Board of Directors shall remain fully exercisable for a period of
three years from the occurrence of the Change of Control event.

         2. Change of Control. For purposes of this Agreement, "Change in
Control" means the happening of any of the following:

              (i) when any "person," as such term is used in Sections 13(d) and
14(d) of the Exchange Act (other than the Company, a Subsidiary or a Company
employee benefit plan, including any trustee of such plan acting as trustee), is
or becomes the "beneficial owner" (as defined in Rule 13d-3 under the Exchange
Act), directly or indirectly, of securities of the Company representing more
than fifty (50%) of the combined voting power of the Company's then outstanding
securities entitled to vote generally in the election of directors; or

              (ii) a merger or consolidation of the Company with any other
corporation, other than a merger or consolidation which would result in the
voting securities of the Company outstanding immediately prior thereto
continuing to represent (either by remaining outstanding or by being converted
into voting securities of the surviving entity) at least fifty percent (50%) of
the total voting power represented by the voting securities of the Company or
such surviving entity outstanding immediately after such merger or
consolidation; or

              (iii) the stockholders of the Company approve an agreement for the
sale or disposition by the Company of all or substantially all the Company's
assets; or
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              (iv) a change in the composition of the Board occurring as a
result of any one meeting of the stockholders of the Company, as a result of
which fewer than a majority of the directors are Incumbent Directors. "Incumbent
Directors" shall mean directors who either are (A) directors of the Company as
of the date of the Change of Control event, or (B) elected, or nominated for
election, to the Board of Directors of the Company with the affirmative votes of
at least a majority of the Incumbent Directors at the time of such election or
nomination (but shall not include an individual whose election or nomination is
in connection with an actual or threatened proxy contest relating to the
election of directors to the Company).

         3. Excise Tax. In the event it is determined that any payment or
distribution of any type to or for the benefit of Director, pursuant to this
Agreement or otherwise, by the Company, any Person who acquires ownership or
effective control of the Company, or ownership of a substantial portion of the
assets of the Company (within the meaning of section 280G of the Code and the
regulations thereunder) or any affiliate of such Person (the "Total Payments")
would be subject to the excise tax imposed by section 4999 of the Code or any
interest or penalties with respect to such excise tax (such excise tax and any
such interest and penalties are collectively referred to as the "Excise Tax"),
then Director shall be entitled to either (A) the full payment or (B) such
lesser amount that would result in no portion of the payment being subject to
excise tax under Section 4999 of the Code (the "Excise Tax"), whichever of the
foregoing amounts, taking into account the applicable Federal, state, and local
employment taxes, income taxes, and the Excise Tax, results in the receipt by
Director, on an after-tax basis, of the greater amount of the payment
notwithstanding that all or some portion of the payment may be taxable under
Section 4999 of the Code.

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

CATALYST SEMICONDUCTOR, INC.                DIRECTOR

By:  _____________________________          By:  __________________________
     Name:                                       Name:
     Title:                                      In his individual capacity

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