SUNNYVALE, Calif., Aug 12, 2004 (BUSINESS WIRE) — MoSys, Inc.,
(Nasdaq:MOSY) the industry’s leading provider of advanced high density
embedded memory solutions, today announced the appointment of three
new independent members to its Board of Directors.

Tommy Eng joins the board with over 20 years of corporate
management, engineering management, software/hardware design and
entrepreneurial experience in system/IC design and Electronic Design
Automation (EDA) to the Board of Directors. Most recently, Mr. Eng was
a founder of Tera Systems, a privately held EDA company as well as
serving as its vice chairman, president and CEO. Previously, Mr. Eng
served as the General Manager of Mentor Graphics’ Advanced IC Design
Automation and Design Consultation division. Mr. Eng also serves on
the board of directors of Focus Enhancements, Inc. (Nasdaq:FCSE), a
public semiconductor company providing advanced, proprietary video
technology for the computer and television industries.

Chi-Ping Hsu, an accomplished EDA executive with over twenty years
of experience, has also joined the MoSys Board of Directors. Dr. Hsu
is currently a Vice President at Cadence Design Systems (NYSE:CDN) in
charge of the company’s synthesis product line. Previously, Dr. Hsu
served as president and Chief Operating Officer of Get2Chip, a
supplier of high performance system-on-chip (SOC) synthesis, which was
acquired by Cadence.

Also, Jim Kupec has joined the MoSys Board of Directors. Mr. Kupec
is the President of the JDK Group, a semiconductor consultancy firm
that he founded which leverages his 25 years of semiconductor industry
experience for the benefit of his clients. Previously, Mr. Kupec
served as CEO of Ammocore, a privately held EDA company. Prior to
that, Mr. Kupec was President of UMC (USA), the U.S. subsidiary of the
wafer foundry United Microelectronics Corporation and he served for
fourteen year in senior management positions at Cypress Semiconductor,
last serving as Senior Vice President where he directed the activities
of four major product groups.

“We are pleased to have industry veterans with such rich
experience join the MoSys Board of Directors,” said MoSys president,
chairman and CEO Fu-Chieh Hsu. “They each have impressive backgrounds
of leadership and accomplishments in diverse technology companies,
which will be extremely beneficial to MoSys. They bring valuable
perspectives to our Board as outside directors, and I look forward to
their contributions.”

Eng, Hsu, and Kupec join current Board members Fu-Chieh Hsu, Wing
Leung, and Carl E. Berg.

ABOUT MOSYS

Founded in 1991, MoSys (Nasdaq:MOSY), develops, licenses and
markets innovative memory technologies for semiconductors. MoSys’
patented 1T-SRAM technologies offer a combination of high density, low
power consumption, high speed and low cost unmatched by other
available memory technologies. The single transistor bit cell used in
1T-SRAM memory results in the technology achieving much higher density
than traditional four or six transistor SRAMs while using the same
standard logic manufacturing processes. 1T-SRAM technologies also
offer the familiar, refresh-free interface and high performance for
random address access cycles associated with traditional SRAMs. In
addition, these technologies can reduce operating power consumption by
a factor of four compared with traditional SRAM technology,
contributing to making them ideal for embedding large memories in
System on Chip (SoC) designs. MoSys’ licensees have shipped more than
75 million chips incorporating 1T-SRAM embedded memory technologies,
demonstrating excellent manufacturability in a wide range of silicon
processes and applications. MoSys is headquartered at 1020 Stewart
Drive, Sunnyvale, California 94085. More information is available on
MoSys’ website at http://www.MoSys.com.

FORWARD LOOKING STATEMENTS

This press release may contain forward-looking statements about
the Company including, without limitation, benefits and performance
expected from use of the Company’s 1T-SRAM technology.

Forward-looking statements are based on certain assumptions and
expectations of future events that are subject to risks and
uncertainties. Actual results and trends may differ materially from
historical results or those projected in any such forward-looking
statements depending on a variety of factors. These factors include
but are not limited to, customer acceptance of our 1T-SRAM
technologies, the timing and nature of customer requests for our
services under existing license agreements, the timing of customer
acceptance of our work under such agreements, the level of commercial
success of licensees’ products such as the Nintendo GAMECUBE and cell
phone hand sets, ease of manufacturing and yields of devices
incorporating our 1T-SRAM, our ability to enhance the 1T-SRAM
technology or develop new technologies, the level of intellectual
property protection provided by our patents, the vigor and growth of
markets served by our licensees and customers, the impact of the
Company’s recent acquisition of ATMOS Corporation on future operating
results and operations of the Company and other risks identified in
the Company’s most recent annual report on Form 10-K filed with the
Securities and Exchange Commission, as well as other reports that
MoSys files from time to time with the Securities and Exchange
Commission. MoSys undertakes no obligation to update publicly any
forward-looking statement for any reason, except as required by law,
even as new information becomes available or other events occur in the
future.

1T-SRAM(R) is a MoSys trademark registered in the U.S. Patent and
Trademark Office. All other trade, product, or service names
referenced in this release may be trademarks or registered trademarks
of their respective holders.

SOURCE: MoSys, Inc.

MoSys, Sunnyvale
Mark Voll, 408-731-1846
markv@MoSys.com
or
Shelton IR
Beverly Twing, 972-239-5119 x126
btwing@sheltongroup.com