DIAB-SDS to Support Hitachi SuperH RISC Processors; Leading Development Tools for Embedded 32-Bit SH-3 and SH-4 RISC Cores Will Be Available for Developers Worldwide.

SAN JOSE, Calif.--(BUSINESS WIRE)--Sept. 27, 1999--

DIAB-SDS, the market leader in embedded development tools for embedded 32-bit RISC-based designs, and an independent subsidiary of Integrated Systems, Inc. (NASDAQ: INTS), today announced that it will deliver its popular SingleStep(TM) debugging environment and Diab C/C++/Java(TM) compiling and Run-Time Analysis solutions for Hitachi's SH-3 and SH-4 microprocessors - two key members of the SuperH 32-bit RISC family. Both DIAB-SDS' leading debugging and compiling technologies will be available later this year as an open comprehensive tool suite. Application developers worldwide who choose the powerful SH-3 and SH-4 embedded processors will benefit from the proven technical superiority and service-focused quality of the DIAB-SDS family of tools.

"We are pleased to see a leading tool vendor like DIAB-SDS committing their support to Hitachi's SH-3 and SH-4 microprocessors," said David Johnson, product manager for Hitachi Semiconductor (America) Inc. "Developers worldwide who have selected Hitachi's processors deserve quality and choice when it comes to embedded tools. The addition of DIAB-SDS support is a benefit for Hitachi's developer community."

"Support for Hitachi's SH-3 and SH-4 processors is critical to accelerating our success in key new markets, and this announcement is more proof of our commitment to broadening our reach and building on our early leadership in embedded 32-bit development," said David Stepner, president of DIAB-SDS. " The SuperH RISC architecture is highly popular in new advanced networking and consumer electronics platforms, as well as other high-volume embedded applications, and we are confident that developers in these fast-moving industries will find their time-to-market demands well-answered by our proven tools."

Availability

DIAB-SDS will offer support for the SH-3 and SH-4 processors as a stand-alone, open solution for any commercial or in-house real-time operating system environment in Q4 1999. The stand-alone suite will feature:

-- Diab D-CC/C++/FastJ (Java(TM)) compilers

-- RTA (Run-Time Analysis) Suite

-- SingleStep

-- ROM monitors for leading SH-3 and SH-4 boards

-- Key hardware connection support

For more information on upcoming stand-alone DIAB-SDS tools support, please contact DIAB-SDS corporate headquarters at 1-650-571-1700, [e-mail]/[e-mail], www.diabsds.com.

About Hitachi Semiconductor (America) Inc.

Hitachi Semiconductor (America) Inc. - a subsidiary of Hitachi America, Ltd., in turn a subsidiary of Hitachi, Ltd. (NYSE: HIT) - supports the requirements of the North American marketplace with a broad range of standard and low power semiconductor solutions. Offering some of the industry's most popular RISC microprocessors and memory components among other semiconductor solutions, Hitachi provides chips to the world's leading device manufacturers within industrial, consumer and emerging market applications. The Company's substantial design engineering, research and development facilities in the United States help bring the world's best technology to U.S. customers.

About DIAB-SDS

DIAB-SDS is a wholly owned, independent operating subsidiary of Integrated Systems, Inc. (NASDAQ: INTS). Formed through the recent merger of Diab Data and SDS, DIAB-SDS is the new leader in embedded tools, offering the best compiling technology and software development solutions for embedded 32-bit RISC applications. DIAB-SDS specializes in open standards compliant, ultra high-performance C, C++ and Java compiling solutions, integrated run-time analysis tools, simulators, and comprehensive debug solutions. DIAB-SDS is headquartered in Foster City, California.

SingleStep, RTA Suite, FastJ, D-CC and D-C++ are trademarks of DIAB-SDS. Other brand or product names are registered trademarks or trademarks of their respective holders.

U. S. Sales Contact: DIAB-SDS, 323 Vintage Park Drive, Foster City, California 94404; telephone [phone]; fax [phone]; DIAB-SDS, 333 East Butterfield Road, Lombard, Illinois 60148; telephone [phone]; fax [phone]; email [e-mail]. Additional information about DIAB-SDS is available at www.sdsi.com and www.ddi.com.

International Contacts: DIAB-SDS in the UK at 44(0)1442-876065; fax [phone]; email [e-mail]. DIAB-SDS in France at 33(0)442-125660; fax [phone]; email [e-mail].; DIAB-SDS in Japan at 81-3-5469-0240, fax [phone], email [e-mail]; US office for Asia/PAC at 630-971-5900; fax [phone]; email [e-mail].