NETsilicon Forms Partnership with Green Hills Software in Embedded Systems Market.

Business/Technology Editors

WALTHAM, Mass.--(BUSINESS WIRE)--June 22, 2000

Companies Agree to Collaborate on Highly Integrated Environments

for Developing Networked Devices

NETsilicon, Inc. (Nasdaq:NSIL), the leading provider of network-enabled, system-on-chip solutions for embedded systems, today announced a wide-ranging technology partnership with Green Hills Software, Inc., a total solutions provider for embedded development.

NETsilicon and Green Hills will work closely to continue to develop integrated development environments on the NET+Works(TM) product platform. This agreement comes on the heels of the successful launch of NETsilicon's NET+OS(TM) embedded solution, which integrates Green Hills' MULTI(R) 2000 Integrated Development Environment. More than 30 customers are now designing with this new platform.

"The importance of integrated development tools for rapid development of embedded applications is well-known and becoming more evident daily," said Pete Peterson, NETsilicon's president and chief executive officer. "Working with Green Hills on the NET+OS program proved the value of our partnership with a key supplier of comprehensive and intuitive software tools like their MULTI 2000," he said.

"Green Hills' partnership with NETsilicon is a direct result of the market demand for more integrated solutions that accelerate time to market," said John Carbone, vice president of marketing at Green Hills Software. "With the addition of our technology, such as ARM-optimized compilers and easy-to-use development environment, we help NETsilicon customers build their applications faster and accelerate their time to market."

The partnership will be broad in scope, and is aimed at creating continual advances and improvements in embedded solutions development over the long-term.

About Green Hills Software, Inc.

Incorporated in 1982, Green Hills Software, Inc., is a leading supplier of software development tools for 32- and 64-bit embedded systems. Green Hills offers a family of optimizing C, C++, Embedded C++, Ada 95, FORTRAN and Pascal compilers. The company's unique MULTI Integrated Development Environment automates the compile-edit-build-debug cycle by integrating advanced facilities such as an RTOS-aware source-level debugger, performance profiler, program builder and version control system. Green Hills Software's tools support all major 32-bit and 64-bit advanced microprocessor families and target environments, including instruction set simulators, ROM Monitors, commercial and home grown real-time operating systems (RTOS) and in-circuit emulators (ICE). Green Hills Software is headquartered in Santa Barbara, CA. For sales information on Green Hills Software products, please call 1-805-965-6044 or email inquiries to [e-mail].

About NETsilicon

NETsilicon, Inc. (Nasdaq: NSIL) is a leading provider of integrated system-on-silicon and software solutions used by device manufacturers to add Internet and Ethernet connectivity to their products. Once network-enabled, these devices can be managed, accessed and serviced from anywhere. NETsilicon's highly integrated solutions help manufacturers reduce time-to-market, lower their costs, and free their engineers from the difficult task of integrating multi-vendor networking components. NETsilicon embedded networking solutions are used in a wide array of networked devices including digital office equipment; medical data collection and patient monitoring units; vending machines; factory automation and process control equipment; power supply monitors; building access control and security systems; exercise equipment; point-of-sale terminals; Internet cameras and telephones; and vehicle diagnostic tools.

For additional company, product or financial information, please visit the NETsilicon Web site, www.netsilicon.com, send email to [e-mail], or call 800-243-2333. For calls originating outside the US, call 781-647-1234. NETsilicon headquarters is located at 411 Waverley Oaks Road #227, Waltham, MA 02452.

Except for the historical information contained herein, the matters discussed in this news release are forward-looking statements that involve risks and uncertainties. The forward-looking statements in this release are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially due to a variety of factors, including without limitation the company's ability to develop, produce, and market products that incorporate new technology on a timely basis, that are priced competitively and achieve significant market acceptance; higher expenses associated with the development and marketing of new products; changes in product mix; risks of dependence on third-party component suppliers; inventory risks due to shifts in market demand; the presence of competitors with broader product lines and greater financial resources; intellectual property rights and litigation; needs for liquidity; and the other risks detailed from time to time in the company's reports filed with the Securities and Exchange Commission.

NETsilicon, NET+Works and NET+OS are trademarks of NETsilicon, Inc. MULTI is a registered trademark of Green Hills Software, Inc. All trademarks are the property of their respective owners.