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QUICKTURN'S EMULATION PATENT ISSUED

 QUICKTURN'S EMULATION PATENT ISSUED
 MOUNTAIN VIEW, Calif., May 6 /PRNewswire/ -- The United States


Patent and Trademark Office has issued Quickturn Systems Inc. its Patent No. 5,109,353 entitled "Apparatus for Emulation of Electronic Hardware System." The patent, filed on Dec. 2, 1988, protects the fundamental technology essential to the construction of any reprogrammable hardware emulator.
 Invented by Stephen Sample, Michael D'Amour, and Dr. Thomas Payne, co-founders of Quickturn, the patent contains 69 claims for an invention which is briefly described in the patent as:
 "An apparatus is disclosed and claimed which aids in the development of integrated circuit and system design by quickly and automatically generating a hardware prototype of the integrated circuit or system to be designed from the user's schematic or netlist. The prototype is electrically reconfigurable and may be modified to represent an indefinite number of designs with little or no manual wiring changes or device replacement. The prototype runs at real time or close to real time speed and may be plugged directly into a larger system. VLSI chips or ASIC devices may be plugged into the prototype and run as part of the emulated design."
 Quickturn also acquired Patent No. 5,036,473 as part of its purchase of Mentor Graphics' emulation technology earlier this year. This is another fundamental emulation patent covering work done by Michael Butts and Jon Batcheller while at Mentor Graphics. Butts and Batcheller are currently employees of Quickturn Systems.
 According to Phillip A. Kaufman, Quickturn's president and CEO, "Our patent position in the area of emulation technology is very strong. We invented emulation technology and have invested heavily in the development of the technology, the products, and the market. These patents are an acknowledgement of the pioneering work and innovation of our employees."
 Quickturn Systems Inc. is the pioneer of computer-aided prototyping and developer of the RPM Emulation System(TM), a reprogrammable hardware emulator that enables design verification for systems using ASICs or full custom chips. Emulation of chip designs allows complete system operation before fabricating silicon and reduces risk, lowers development costs, and shortens time to market. Quickturn is headquartered at 325 E. Middlefield Road, Mountain View, CA 94043. Telephone, 415-967-3300.
 -0- 5/6/92
 NOTE: RPM Emulation System is a trademark of Quickturn Systems Inc.
 /CONTACT: Nanette M. Sisk of Quickturn Systems Inc., 415-967-3300; or Marion Kenefick, 408-374-8968, for Quickturn Systems/ CO: Quickturn Systems Inc. ST: California IN: CPR SU:


JL-RM -- SJ006 -- 7140 05/06/92 13:17 EDT
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Date:May 6, 1992
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