AMCC Uses MoSys’ 1T-SRAM Embedded Memory Technologies for
Development of Traffic Management Communications Tools

SUNNYVALE, Calif.–(BUSINESS WIRE)–Feb. 24, 2003– MoSys, Inc. (Nasdaq:MOSY) the industry’s leading provider of high
density SoC embedded memory solutions, today announced an expanded
relationship with Applied Micro Circuits Corp. (AMCC) (Nasdaq:AMCC).
AMCC incorporates MoSys’ 1T-SRAM(R) embedded memory technologies into
its traffic management solutions, providing the high-performance
memory necessary for AMCC’s high-speed networking ICs.

“With MoSys’ advanced memory technologies, AMCC can offer our
customers leading-edge solutions with the increased performance needed
to drive today’s optical networks,” said Greg Winner, senior vice
president engineering and quality, AMCC. “MoSys’ 1T-SRAM embedded
memory offers superior density than other technologies and we look
forward to extending our relationship with the company by
incorporating these unique memory technologies into our
telecommunications products.”

“The high-density memory capabilities of MoSys’ 1T-SRAM allows
AMCC to develop innovative products that deliver a superior level of
systems integration,” said Mark-Eric Jones, vice president and general
manager of intellectual property, MoSys. “This unique memory
capability, which is compatible with standard CMOS technology, enables
real systems-on-a-chip for the networking arena.”

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 it ideal for embedding large memories in System
on Chip (SoC) designs. MoSys’ licensees have shipped more than 50
million chips incorporating 1T-SRAM embedded memory, demonstrating the
excellent manufacturability of the technology 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.

ABOUT AMCC

AMCC designs, develops, manufactures, and markets
high-performance, high-bandwidth silicon solutions empowering
intelligent wide-area networks. AMCC utilizes a combination of
digital, mixed-signal and high-frequency analog design expertise
coupled with system-level knowledge and multiple silicon process
technologies to offer integrated circuit products that enable the
transport of voice and data over fiber optic networks. The company’s
system solution portfolio includes switch fabric, traffic management,
network processor, framer/mapper, PHY and PMD devices that address the
high-performance needs of the evolving intelligent optical network.
AMCC’s corporate headquarters are located in San Diego, California.
Sales and engineering offices are located throughout the world. For
further information regarding AMCC, please visit our Web site at
http://www.amcc.com.

AMCC Forward Looking Statements

The statements contained in this press release that are not purely
historical are forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933 and Section 21E of the
Securities Exchange Act of 1934. Such forward-looking statements
including statements relating to the relationship, potential sales
resulting from the relationship or new products derived from the
relationship are subject to a number of risks and uncertainties,
including the risk that the relationship would not result in such
sales or products or that such products would not be successfully
developed or achieve market acceptance, as well as the other risks and
uncertainties set forth in the Company’s Annual Report on Form 10-K
for the year ended March 31, 2002, and in other filings of the Company
with the Securities and Exchange Commission. As a result of these
risks and uncertainties, actual results may differ materially from
these forward-looking statements. The forward-looking statements
contained in this news release are made as of the date hereof and AMCC
does not assume any obligation to update any forward-looking
statement.

Note for Editors:

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.