SUNNYVALE, Calif., Mar 07, 2005 (BUSINESS WIRE) — MoSys, Inc. (Nasdaq:MOSY), the industry’s leading
provider of high density SoC embedded memory solutions, today
announced that Mark Voll, Vice President of Finance and
Administration, Chief Financial Officer will be presenting at The B.
Riley & Co. Annual Investor Conference to be held at the Venetian
Resort Hotel Casino in Las Vegas on March 18, 2005. Mr. Voll will be
addressing key technology investors regarding the Company’s operations
and technology.

The live audio Web broadcast of the presentation can be accessed
through the investor section of the MoSys Web site at www.Mosys.com. A
replay of the presentation also will be available on the site for 30
days.

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 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 80 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.

Note for Editors:

1T-SRAM(R) is a MoSys trademark registered in the U.S. Patent and
Trademark Office. Nintendo GameCube is a trademark of Nintendo. 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, Inc., Sunnyvale
Mark Voll, 408-731-1846

markv@mosys.com

or
Investor Relations:

Shelton Investor Relations, Dallas

Beverly Twing, 972-239-5119 x 126
btwing@sheltongroup.com