Santa Barbara, CA. April 10, 2001 -- Green Hills Software, Inc., a leading supplier of embedded software solutions, and a Rational Unified Partner Program member, today announced the availability of its INTEGRITY® real-time operating system for Rational Rose® RealTime visual development environment. Green Hills' INTEGRITY RTOS provides a secure, ultra-reliable environment for taking applications developed under Rose RealTime and executing them on an embedded target system.

"Rational Rose RealTime and INTEGRITY offer an excellent combination for developing complex real-time embedded applications and deploying them in a secure, high-availability target environment," commented John Carbone, Green Hills' vice president of marketing. "INTEGRITY, together with our MULTI IDE, makes it easy to take high-level applications developed under Rose RealTime and develop optimized, error-free code that will execute efficiently and reliably on the target system."

"Rational Rose RealTime facilitates a top-down approach to software design that makes it easy to conceptualize and structure complex applications," said David Abelow, Director of Alliance Marketing, Rational Software. "The INTEGRITY RTOS, together with Green Hills' optimizing compilers and MULTI IDE, make it easy for Rose RealTime users to debug and optimize their applications for deployment on high-availability target systems running the INTEGRITY RTOS."

Rational Rose RealTime is a comprehensive visual development environment that enables developers to design applications using the industry standard UML™ (Unified Modeling Language), greatly reducing the need to write C or C++ code. Rose RealTime provides a powerful combination of notation, processes, and tools to meet real-time challenges. Through the UML coupled with real-time design constructs, code generation, and model execution, Rose RealTime addresses the complete project lifecycle, from early use case analysis, through design, implementation, and testing. Rose RealTime automatically generates C or C++ code to perform the functions that designers specify using UML diagrams. This code, once compiled using Green Hills' optimizing compilers, may then be downloaded and debugged at the source level on the target through MULTI, and executed on the target under the INTEGRITY RTOS.

INTEGRITY is a ROMable, flashable, high-availability, fault-tolerant RTOS designed for mission-critical applications requiring memory protection and secure operation. Tightly integrated with the MULTI IDE, INTEGRITY employs a pre-emptive, real-time, priority-based multitasking scheduler optimized for fast 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. It is also the first memory-protected real-time operating system to be offered on a royalty-free basis. Green Hills supplies an Adaptation Layer that enables applications developed using Rose RealTime to be deployed on target systems under the INTEGRITY RTOS.

About the Rational Unified Partner Program

Rational Software Corporation, the e-development company, helps organizations develop and deploy software for e-business, e-infrastructure, and e-devices through a combination of tools, services and software engineering best practices. The Rational Unified Partner Program supports over 500 participating partners with tools, joint marketing opportunities, qualifications and training, and ensures that their products and services meet the high standards that customers have come to expect from Rational. The Rational Unified Partner Program extends Rational's e-development solution, providing extended product and service offerings, further enabling Rational customers to build Internet software faster with higher quality. Companies and individual technology consultants interested in learning more about the Rational Unified Partner Program, including details on how to participate, can visit www.rational.com.

More on Green Hills Software, Inc.

Incorporated in 1982, Green Hills Software, Inc., is a leading supplier of royalty-free Real-Time Operating Systems (RTOS) and software development tools for 32- and 64-bit embedded systems. Green Hills' royalty-free ThreadX® and INTEGRITY® real-time operating systems, fully integrate with its market leading compilers and MULTI® Integrated Development Environment (IDE), providing 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 805-965-6044 or email inquiries to sales@ghs.com. Additional information is available on the Internet at http://www.ghs.com.

Green Hills Software and MULTI are registered trademarks and INTEGRITY is a trademark of Green Hills Software, Inc. Other trademarks are trademarks (registered or otherwise) of the respective trademark owners.