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                                                                   Exhibit 10.75
                        EXTENSION OF CONSULTING AGREEMENT

     This Extension of Consulting Agreement is entered into at Sunnyvale, CA as
of June 7, 2001 between Catalyst Semiconductor, Inc. ("Company") and Allan
Advisors, Inc. ("Consultant").

          A.   Recitals. Company and Consultant entered in a Consulting
               Agreement on August 14, 1995, which Agreement was extended on
               June 3, 1998 and modified on January 1, 1999 (the "Agreement").
               Company and Consultant wish to extend and modify the Agreement as
               set forth herein.

          B.   Duties. Paragraph 2 of the Agreement is modified to provide that
               Consultant will provide advice in Santa Clara County as agreed
               between Consultant and the Chief Executive Officer ("CEO"). Such
               duties shall include:

               a.   Advisor and Counselor. Consultant will provide general
                    advice to the CEO on business and strategic legal issues.

               b.   Legal Services. Consultant will provide general legal advice
                    and will assist in coordinating services provided by outside
                    counsel as requested by the CEO.

               c.   Negotiations. Consultant will provide assistance to the CEO
                    in negotiating contractual and other business relationships.

          C.   Term. Paragraph 4 of the Agreement is modified to provide that
               the Agreement shall terminate on August 14, 2003; provided that
               Company may terminate the Agreement anytime prior to that date
               upon payment of a termination fee of $100,000. Any termination of
               the Agreement shall in no way effect the provisions of Paragraph
               5 of the Agreement, as modified herein.

          D.   Stock Options. Paragraph 5 of the Agreement is modified to delete
               the clause "...or if Company elects to terminate this Agreement
               prior to...[August 14, 2003]...."

Except as expressly modified herein, Company and Consultant ratify and affirm
all the terms and conditions on the Consulting Agreement entered into on August
14, 1995, as extended on June 3, 1998 and modified on January 1, 1999.

<TABLE>
<S>                                         <C>
Catalyst Semiconductor, Inc.                Allan Advisors, Inc.

/s/ Radu Vanco                              /s/ Lionel M. Allan
----------------------                      ----------------------
Radu Vanco,                                 Lionel M. Allan,
Chairman and CEO                            CEO
</TABLE><PAGE>   1
                                                                   EXHIBIT 10.76

                          CATALYST SEMICONDUCTOR, INC.

                               SEVERANCE AGREEMENT

         This Severance Agreement ("Agreement") is made as of this 21st day of
September 1999 between Barry Wiley ("Employee") and Catalyst Semiconductor, Inc.
("Corporation").

                                   WITNESSETH

         WHEREAS, Employee is employed by the Corporation.

         WHEREAS, the Corporation and Employee mutually desire to enter into a
severance agreement with respect to Employee's employment by the Corporation.

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

         1. INVOLUNTARY TERMINATION. If Employee's employment is terminated as a
result of Involuntary Termination other than for cause, at any time prior to
three years from this date, Employee will be entitled to consideration as
defined below:

         2. SEVERANCE BENEFITS FOR INVOLUNTARY TERMINATION FOLLOWING A CHANGE OF
CONTROL.

              a. Employee shall be entitled to fifty percent (50%) of his annual
base salary payable in six equal monthly installments, commencing one month
after the termination date.

              b. All outstanding unvested stock options shall immediately vest
as of the date of termination and shall remain exercisable for a period of three
years after said date.

              c. In addition, as of the termination date, Employee shall be
entitled to receive any unpaid salary and accrued vacation.

              d. Change of control is defined as any sale of substantially all
of the Company's assets, a sale of a majority of its shares or a merger or
consolidation where the existing shareholders do not control at least 50% of the
total voting power after the event.

         3. SEVERANCE BENEFITS FOR INVOLUNTARY TERMINATION APART FROM A CHANGE
OF CONTROL.

              a. Employee will be entitled to twenty-five percent (25%) of his
annual base salary as of the termination date. Such payment shall be paid in six
equal monthly amounts commencing one month after the termination date.

              b. All outstanding vested options as of this date shall remain
exercisable for a period of one year after termination date.

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              c. In addition, as of the termination date, Employee shall be
entitled to receive any unpaid salary and accrued vacation pay.

         4. No severance payment will be made under paragraphs 2 or 3 if
termination occurs, for any reason, during the first ninety (90) days of
employment.

         5. CONFIDENTIAL INFORMATION. Employee shall continue to maintain the
confidentiality of all confidential and proprietary information of the
Corporation and shall continue to comply with the terms and conditions of the
Confidentiality Agreement(s) between Employee and Corporation.

         6. NON-DISPARAGEMENT. Employee agrees not to disparage the Corporation
or any of its officers, directors, employees, products, vendors or customers.

         7. RELEASE OF CLAIMS. Both parties agree that the foregoing
consideration represents settlement in full of all outstanding obligations owed
by Corporation to the Employee. Employee and his respective heirs, executors,
assigns and agents hereby fully and forever releases Corporation and its
officers, directors, employees, assigns and agents from any claim, duty,
obligation or cause of action relating to any matters, known or unknown, arising
from any omissions, acts or facts that have occurred up until the termination
date, including without limitation:

              a. Any claims relating to Employee's employment relationship with
the Corporation.

              b. Any claims relating to Employee's receipt of options and/or
purchase or sales of shares of stock of the Corporation.

              c. Any claims for violation of state, federal or municipal law.

         8. CONFIDENTIALITY. The parties agree to use their best efforts to
maintain in confidence the existence, contents and terms of this Agreement
except as disclosure may be required by law.

         9. TAX CONSEQUENCES. The Corporation makes no representations or
warranties with respect to the tax consequences of any consideration received by
Employee under the terms of this Agreement. Employee agrees that he is solely
responsible for payment, if any, of local, state or federal taxes on all
consideration received. Employee further agrees to indemnify the Corporation for
any claims due to his failure to pay any such taxes.

         10. ENTIRE AGREEMENT. This Agreement represents the entire agreement
and understanding between the Corporation and Employee concerning Employee's
relationships with the Corporation and supersedes any prior written or oral
agreements concerning Employee relationship with and compensation from the
Corporation and may not be changed except in written form signed by both
parties.

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         11. GOVERNING LAW: JURISDICTION. This Agreement shall be governed by
the laws of the State of California. Any disputes shall be resolved by binding
arbitration by JAMSENDISPUTE in Santa Clara County, to which binding arbitration
both parties consent.

         12. NO LEGAL REPRESENTATION. Employee is advised to seek his own legal
advice in this matter and acknowledges that Venture Law Group and Lionel M.
Allan are acting solely as counsel for the Corporation and not for Employee.

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

Catalyst Semiconductor, Inc.

By:

/s/ Radu Vanco                              /s/ Barry Wiley
-------------------------------             ---------------------------------
Radu Vanco                                  In his individual capacity
President & CEO                             Barry Wiley

                                       3Exhibit 4.1

                     [ SPECIMEN OF COMMON STOCK CERTIFICATE ]

                                      1999

                INCORPORATED UNDER THE LAWS OF THE STATE OF UTAH
                          MORGAN CLARK MANAGEMENT, INC.
                   100,000,000 Common Shares, $0.001 Par Value

Cert. No. ________                                           Shares_____________

THIS CERTIFIES that ____________is the registered holder of __________________
Shares of

                          MORGAN CLARK MANAGEMENT, INC.

transferable only on the books of the Corporation by the holder hereof in person
or by Attorney upon surrender of this Certificate properly endorsed.

IN WITNESS WHEREOF, the said Corporation has caused this Certificate to be
signed by its duly authorized officers this _____ day of ______, A.D. 2000.

                                 [Corporate Seal
                                      1999
                                      Utah]
--------------------------------                --------------------------------
Vincent van den Brink, Secretary                Vincent van den Brink, President

The shares of stock represented by this certificate have not been registered
under the Securities Act of 1933, as amended, and may not be sold or otherwise
transferred unless a compliance with the registration provisions of such Act has
been made or unless availability of an exemption from such registration
provisions has been established, or unless sold pursuant to Rule 144 under the
Securities Act of 1933.

THIS CERTIFICATE IS NOT VALID UNTIL COUNTERSIGNED BY THE TRANSFER AGENT AND
REGISTERED BY THE REGISTRAR.

                     Atlas Stock Transfer Company _________
                            Salt Lake City, UT 84107

                                   ASSIGNMENT
                                   ----------

FOR VALUE RECEIVED,______________________________ hereby sell, assign and
transfer unto

--------------------------------------------------------------------------------
      (Please print or type name, address and SS# or ID number of Assignee)

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

       ____________________________________________________________ Shares
                             (Type Number of Shares)

of the capital stock represented by the within certificate, and do hereby
irrevocably constitute and appoint

            ______________________________________________ Attorney
                                (Type Full Name)

to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated: ___________________________

                                     ------------------------------------------
                                     Name:

                                     ------------------------------------------
                                     Name:

Notice: The signature to this assignment must correspond with the name as
written upon the face of this certificate in every particular without alteration
or enlargement or any whatever.

Notice: Signatures must be guaranteed by a registered brokerage firm, a bank or
a trust company.

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