Green Hills Software and ARC International Announce MULTI Development Environment and Debug Probe Support for Configurable ARC Processors

SANTA BARBARA and SAN JOSE, Calif., January 4th, 2005 – Green Hills Software, Inc., the market leader in embedded software development tools and royalty-free Real-Time Operating Systems (RTOS), and ARC International, the world leader in configurable CPU/DSP processor cores and application platforms, today announced immediate availability of Green Hill Software's optimized MULTI Integrated Development Environment (IDE), Green Hills probe and Slingshot debug device for ARC International's full line of configurable processors.

"Our partnership with Green Hills Software is another example of how ARC provides its customers with a complete design environment comprised of industry-standard tools and software from leading vendors," said Derek Meyer, vice president of marketing at ARC. "The combination of Green Hills Software's MULTI IDE and debug probes with ARC's ARCangel prototyping system and MetaWare C compiler, gives engineers a powerful, tightly integrated system for developing sophisticated applications. The results are reduced total cost of ownership and faster time to market parameters for customers leveraging this optimized platform."

"We have expanded our product line to service the growing number of customers using ARC's leading-edge configurable technology," said Craig Franklin, vice president of advanced products at Green Hills Software. "Working with ARC, our engineering teams have produced a world-class development environment that has been customized and tuned for the ARC processor. This solution is already being adopted by customers, resulting in optimized end products."

The MULTI IDE provides a graphical environment for ARC™ software development in Windows, Linux or UNIX environments. ARC targets, including the ARCangel evaluation board, can be accessed through the following interfaces:

• Bare Board Access (no RTOS or ROM monitor) – Targets connected through JTAG headers on the board. ARC boards are supported with the Green Hills probe and Slingshot debug device.
• Custom RTOS support – Kernel and multitask-aware debugging for ARC boards running Express Logic's ThreadX RTOS. Special commands allow tasks to be stopped upon system events such as task creation.

ARC 600 and ARC 700 Cores

The ARC 600 core is optimized to deliver high performance in a small silicon area with minimal power consumption. The ARC 700 core is the smallest 32-bit 400 MHz processor available today, and supports complex applications with an MMU and processing modes that enable feature-rich and secure operating systems. Both the ARC 600 and ARC 700 cores are DSP-enhanced and eliminate the need for additional signal processing engines.

About Green Hills Software

Founded in 1982, Green Hills Software, Inc. is the technology leader for real-time operating systems and software development tools for 32- and 64-bit embedded systems. Our royalty-free INTEGRITY RTOS, velOSity microkernel, compilers, MULTI and AdaMULTI Integrated Development Environments and TimeMachine debugger, offer a complete development solution that addresses both deeply embedded and high-reliability applications. Green Hills Software is headquartered in Santa Barbara, CA, with European headquarters in the United Kingdom. Visit Green Hills Software on the web at www.ghs.com.

About ARC

ARC International is a world leader in low-power, high-performance 32-bit configurable CPU/DSP processor cores, subsystems, real-time operating systems and development tools for embedded system design. ARC's configurable and extendible cores assist customers in the development of next generation digital media, consumer and communications devices, resulting in lower cost, higher performance SOC products.

ARC International maintains a worldwide presence with corporate offices in San Jose, California, USA and Elstree, UK. The Company has research and development offices located in England and the United States. For more information please visit the ARC website at: www.ARC.com. ARC International is listed on the London Stock Exchange as ARC International plc (LSE: ARK).

Green Hills Software, the Green Hills logo, MULTI, INTEGRITY, velOSity, AdaMULTI, TimeMachine, Padded Cell, Integrate and EventAnalyzer are trademarks or registered trademarks of Green Hills Software, Inc. in the U.S. and/or internationally. POSIX is a registered trademark and 1003.1 is a trademark of the Institute of Electrical and Electronic Engineers, Inc. All other trademarks and products are the property of their respective owners.

ARC, MetaWare, ARCangel and the ARC logo are trademarks or registered trademarks of ARC International. All other brands or product names contained herein are the property of their respective owners. This press release may contain certain "forward-looking statements" that involve risks and uncertainties. For factors that could cause actual results to differ, visit the company's Website as well as the listing particulars filed with the United Kingdom Listing Authority and the Registrar of Companies in England and Wales.