San Jose, CA. Embedded Systems Conference Booth #636. September 26, 2000 -- Green Hills Software, a leading supplier of software solutions for embedded Internet and communications systems, announced an agreement with Trillium Digital Systems to certify the integration of Trillium's industry leading TAPA® (Trillium Advanced Portability Architecture) interface with Green Hills' INTEGRITY® real-time operating system under the Trillium Compliant™ Program. The agreement with Trillium, an Intel company (NASDAQ:INTC), will make it easy for INTEGRITY users to access Trillium's TAPA-based communications software solutions.

INTEGRITY is a high-availability, fault-tolerant RTOS designed for mission-critical applications requiring memory protection and secure operation. Optimized for fast, secure, deterministic response, INTEGRITY features advanced memory protection capabilities, dynamic download, task- and system-level debug, optional POSIX support, and extensive embedded Internet and telephony protocol support. INTEGRITY is fully integrated with Green Hills' award winning MULTI® 2000 development environment, which combines a family of optimizing C/C++/Ada95 compilers with an advanced source-level debugger, version control system, source editor, browser, profiler, run-time error checker, simulator, and real-time EventAnalyzer™.

Trillium's communications software solutions are used by industry-leading suppliers of wireless, Internet, broadband and telephony products. Trillium's high-performance, high-availability software and services reduce the time, risk and cost of implementing SS7, ATM, Broadband ISDN, Frame Relay, MPLS, VoIP (H.323, SIP, and MGCP/MEGACO/H.248), SIGTRAN, 3G Wireless, ISDN and other communications applications.

The integration of INTEGRITY with Trillium's standards-based protocols will give INTEGRITY users immediate access to a broad range of advanced communications protocols and a number of PPC860 and 8260 device drivers. The Trillium Compliant™ Program certifies the accuracy and completeness of the integration, offering equipment manufacturers a fully integrated, validated solution.

"INTEGRITY's memory-protected, fault-tolerant architecture makes it ideal for hosting high-end telecom and Internet infrastructure applications that demand high availability," commented John Carbone, Green Hills' vice president of marketing. "The addition of Trillium's industry-leading communications protocols will greatly enhance our telecom offering, and provide a versatile platform for quickly deploying robust, ultra-reliable, high-end telecom applications."

"Being Trillium Compliant is a major step in helping Green Hills provide broader product offerings to communications equipment manufacturers," added Rich Cahalan, president and COO of Trillium Digital Systems, Inc. "Incorporating Trillium's high-performance, high-reliability protocols helps INTEGRITY address demanding, mission-critical telecom applications."

About Trillium

Trillium Digital Systems, Inc. is an Intel company headquartered in Los Angeles, California and is a leading provider of communications software solutions for the converged network infrastructure. Trillium's source code solutions are used in more than 500 projects by industry-leading suppliers of wireless, Internet, broadband and telephony products. Trillium's high-performance, high-availability software and services reduce time, risk and cost of implementing SS7, IP, ATM, Wireless and other standards-based communications protocols. Trillium, an ISO 9001-certified software company, is the Networking Software Division of Intel's Network Processing Group which focuses on the Intel® Internet Exchange™ Architecture (IXA). Additional information is available at http://www.trillium.com

About Green Hills Software, Inc.

Incorporated in 1982, Green Hills Software, Inc., is a leading supplier of royalty-free real-time operating systems and software development tools for 32- and 64-bit embedded systems. Green Hills' royalty-free ThreadX® and INTEGRITY® real-time operating systems, fully integrated with its market leading compilers and MULTI® integrated development environment, provide a total development and run-time solution that addresses both deeply embedded and maximum reliability applications. Green Hills Software is headquartered in Santa Barbara, CA, with international headquarters in the United Kingdom. For more information on Green Hills Software products, please call 1-805-965-6044 or email inquiries to sales@ghs.com. http://www.ghs.com.

Green Hills Software, and MULTI are registered trademarks and INTEGRITY is a trademark of Green Hills Software, Inc. Trillium and Trillium Digital Systems are registered trademarks of Trillium, Trillium Digital Systems and TAPA are registered trademarks, and Trillium Compliant, Software on Silicon and The World's Source for Communications Software are trademarks, of Trillium Digital Systems, Inc. Other trademarks are trademarks (registered or otherwise) of the respective trademark owners.