DIAB-SDS and Enea OSE Systems Add New, Run-time Debugging Support.

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

Leading Development Tools for Embedded 32-bit RISC Designs Take Advantage of Debug Server Technology from Enea OSE Systems to Provide

Expanded Capability

DIAB-SDS, the market leader in embedded development tools for embedded 32-bit RISC processors, and an independent subsidiary of Integrated Systems, Inc., (NASDAQ: INTS), today announced the availability of SingleStep(TM) for the Enea OSE Systems Debug Server. Run-time debugging support via the OSE Debug Server is now available with SingleStep v7.5 for PowerPC(TM) targets.

"While SingleStep previously provided an excellent debugging environment for OSE users, the integration of SingleStep with the Debug Server delivers significant new capabilities," said Bill McCombie, manager of third-party relationships at Enea OSE Systems. "Bringing together SingleStep and the full-featured target connectivity provided by the OSE Debug Server is further evidence of the commitment our companies share in serving the embedded marketplace."

Integration with the OSE Debug Server builds on existing SingleStep support for the debugging of OSE applications, adding the capability to dynamically download multiple application images at run-time, and instantiate a copy of SingleStep for each image. SingleStep can also be used to stop the execution of one process in a running system, without impacting the other processes that are active in the system. This integration with OSE's run-time program loading and debugging capabilities provides increased flexibility when working in the OSE environment.

"DIAB-SDS is committed to providing customers with new debugging capabilities, that target their most difficult problems," said Rob McCammon, marketing director with DIAB-SDS. "The combination of advanced Debug Server technology from Enea OSE Systems, and SingleStep's powerful debugging capabilities, will surely reduce development time for even the most advanced applications.

Availability

-- SingleStep v7.5 for the ENEA OSE Debug Server is available today

for use with PowerPC processors. Host support includes

Windows(R), Solaris(R), and HP-UX.

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

About Enea OSE Systems

Enea OSE Systems is the technological leader for real-time operating systems and development tools for building distributed and fault-tolerant embedded real-time systems. Enea OSE Systems is a subsidiary of Enea Data, a Swedish company founded in 1968 and listed on the Swedish Stock Exchange. With a work force of more than 100 persons, the core of Enea OSE Systems' business has always been the development of time-critical and highly reliable real-time operating systems and time saving, efficient, development tools. Enea OSE Systems' customers are found within the telecommunications, data communications, process control, automotive, defense, biomedical technology and consumer electronic industries.

The OSE RTOS supports fault-tolerant systems that are designed to allow recovery from hardware and software failures. OSE differs from other RTOS' by adopting message passing as its primary method of interprocess communication. Because of its support for high-availability systems, OSE has a particularly significant impact in the telecommunications industry. The OSE RTOS includes built-in safety features that have qualified it for International Electrotechnical Commission (IEC) 61508 certification. IEC 61508 for Functional Safety of Safety Related Systems is a standard for safety-critical systems. In addition, the OSE RTOS is currently seeking certification according to the stringent DO178-B safety standard.

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, FastJ, D-CC and D-C++ are trademarks of DIAB-SDS. OSE is a trademark of Enea OSE Systems. 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].