Virtual Silicon Adds Michael J. Callahan to Board of Directors

Sunnyvale, Calif. - May 10, 2004 - Virtual Silicon Technology, Inc., a leader in semiconductor intellectual property, today announced that industry veteran Michael J. Callahan has joined the board of directors of the company. Callahan also serves on the boards of Quicklogic and Teknovus.

Callahan brings to Virtual Silicon a wealth of executive management experience in the semiconductor industry. Mike is the retired chairman, president and CEO of Waferscale Integration, a supplier of programmable system devices, where he served from 1990 to 2000. Previously, Mike was the president of the Monolithic Memories subsidiary of Advanced Micro Devices (AMD) from 1987 to 1990. Before the acquisition by AMD, Callahan held various positions at Monolithic Memories (MMI) from 1978 to 1987, including executive vice president and chief operating officer. Before joining MMI, Mike spent 16 years at Motorola Semiconductor. Callahan holds a B.S.E.E. from the Massachusetts Institute of Technology (MIT) and did graduate work at Arizona State University (ASU). Prior to attending MIT, Mike was a sergeant in the United States Marine Corps.

“Mike’s incomparable experience in the semiconductor industry, in both private and public companies will bring a valued perspective to Virtual Silicon." said Barry Hoberman, Virtual Silicon President and CEO. "Mike will provide a strong point of leadership as Virtual Silicon continues to grow our business to reach into new strategic directions."

“Virtual Silicon’s excellent executive team and high-quality semiconductor IP products are well positioned to lead the SoC IP market,” said Callahan. “I am very pleased to be a part of the continued growth of Virtual Silicon and look forward to contributing to its success.”

About Virtual Silicon Technology

Virtual Silicon is a leading supplier of semiconductor intellectual property and process technology to manufacturers and designers of complex systems-on-chip (SoC). Headquartered in Sunnyvale, CA, the company provides process-specific embedded components that serve the wireless, networking, graphics, communication and computing markets. Customers include leading fabless semiconductor companies, integrated semiconductor manufacturers, foundries, and SoC developers who demand leading edge technology for their semiconductor innovations.

For more information, call (408) 548-2700 or visit Virtual Silicon online at www.virtual-silicon.com.

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