**EXHIBIT10.22**

October 4, 2006

Mr. Raj Singh

Dear Raj:

I am pleased to offer youa position with Mosys, Inc. (the “Company”) as Vice President, Marketing andBusiness Development, an exempt position in which you will report directly tome. Your semimonthly compensation will be $8,333.33 dollars, which is equal to$200,000.00 annually.  You will also beeligible to receive an Incentive Bonus based on the following guidelines:

-  for each Agreement which is signed with aStrategic Account from a targeted account list and which involves substantialpayments to Mosys, you will be paid an Incentive Bonus of $12,500.  The companies that are identified as targetaccounts and the determination of whether the agreement involves substantialpayments will be in the sole discretion of the Company.

In addition, you will be granted an option to purchase175,000 shares of the Company’s common stock, subject to approval by the Board ofdirectors and your execution of the Company’s standard Stock Option Agreement.The terms of such option shall be in accordance with the terms of the Company’sstock option plan.  Accordingly, theoptions will vest 25% at the end of one year of employment and 2.0833% permonth thereafter.  The per share exerciseprice of the option shall be the fair market value of the Company’s commonstock on the date of grant as determined by the Board of Directors.

Upon the commencement of your employment, the Companywill enter into a Change-in-Control agreement with you, a copy of which isattached for your reference.

You will also beeligible to participate in the Company’s employee benefit plans including ourstandard major medical, dental, life, short and long term disability, vision,flexible benefit plan, paid holidays, personal time off (PTO) and the Company’s401(k) plan.

You should be aware that your employment with theCompany is for no specified period and constitutes at will employment.  As a result, you are free to resign at anytime, for any reason or for no reason. Similarly, the Company is free to conclude its employment relationshipwith you at any time, with or without cause.

For purposes of federalimmigration law, you will be required to provide to the Company documentaryevidence of your identity and eligibility for employment in the UnitedStates.  Such 

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documentation mustbe provided to us within three (3) business days of your date of hire, or ouremployment relationship with you may be terminated.

In the event of any dispute or claim relating to orarising out of our employment relationship, you and the Company agree that allsuch disputes shall be fully and finally resolved by binding arbitrationconducted in Santa Clara County, California. However, we agree that this arbitration provision shall not apply to anydisputes or claims relating to or arising out of the misuse or misappropriationof the Company’s trade secrets or proprietary information.

To indicate your acceptance of the Company’s offer,please sign and date this letter in the space provided below and return it toHuman Resources.  This letter, along withthe agreement relating to proprietary rights between you and the Company, setforth the terms of your employment with the Company and supersede any priorrepresentations or agreements, whether written or oral.  This letter may not be modified or amendedexcept by a written agreement, signed by the Company and by you.

Raj, we believe that you can make a great contributionto Mosys and we all look forward to working with you.
|                                |   | Sincerely,              |
|--------------------------------|--------|-------------------------|
|                           |   | /s/ Chet Silvestri      |
|                           |   | Chet Silvestri          |
|                           |   | Chief Executive Officer |
| ACCEPTED AND  AGREED TO        |   |                    |
| This 6th day of  October, 2006 |   |                    |
| /s/ Raj Singh                  |   |                    |
| Raj Singh                      |   |                    |
| Start date:  October 6, 2006   |   |                    |

 

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