FOR IMMEDIATE RELEASE

Press Contacts:

Cynthia Fray
Metrowerks Inc.
(512) 873-4758
cynthia@metrowerks.com

Sara Payne/Deb Fry
Microware Systems Corporation
(515) 223-8000
sarap@microware.com/debf@microware.com

METROWERKS TO LICENSE JAVA OPTIMIZATION TECHNOLOGY TO MICROWARE

AUSTIN, Texas-April 2, 1997-Metrowerks Inc. (NASDAQ: MTWKF, TSE/ME: MWK),
one of the world’s leading providers of software development tools, today
announced that it will license its optimized byte code interpreter and
Just-In-Time (JIT) compilation technology to Microware Systems Corp. for
implementation in the Java Virtual Machine running on Microware’s OS-9
real-time operating system.

OS-9 is a leading multi-tasking real-time operating system for mission
critical embedded applications, including digital TV, Internet appliances
and wireless communications devices.

The first implementation of the Java optimization technology will target
the Java Virtual Machine running on OS-9 for PowerPC.

“Microware is pleased to be able to offer OS-9 developers an enhanced Java
experience by integrating Metrowerks’ optimized Java technology into our
product offerings,” said Ken Kaplan, president and chief executive officer
of Microware Systems Corporation.

“Metrowerks has developed world-class acceleration technology that has been
licensed to Microsoft for Internet Explorer on Mac OS and Apple Computer
for future use in Apple operating systems,” said Jean Belanger, chairman
and chief executive officer of Metrowerks. “We’re extremely pleased to
license this powerful technology to Microware in order to provide enhanced
Java execution on OS-9.”

About Microware

Microware develops, markets, and supports sophisticated real-time operating
system software and development tools for advanced consumer,
communications, and industrial products, including devices for the emerging
Internet, wireless communications, and digital television markets.
Microware is the first real-time embedded operating system software
provider to receive ISO 9001 certification for its software development
quality assurance methodologies. Microware, headquartered in Des Moines,
Iowa, was founded in 1977 and has technology and sales offices throughout
the United States as well as in England, France, Germany, and Japan. For
more information on Microware, please visit their World Wide Web site at
www.microware.com.

About Metrowerks

Founded in 1985, Metrowerks develops, markets and supports a complete line
of programming tools for building applications for a number of operating
systems intended for use on desktop computers or embedded systems,
including Mac OS, Windows 95, Windows NT, PlayStation OS, Be OS and Palm
OS, running on a number of microprocessors including 68K, PowerPC, MIPS and
x86 microprocessors. Metrowerks’ CodeWarrior products are used by over
65,000 registered users in 70 countries. Additional information on
Metrowerks and its products is available via e-mail at
“info@metrowerks.com”, from our web site at “http://www.metrowerks.com”, or
by calling (800) 377-5416 or (512) 873-4700.

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Metrowerks, the Metrowerks logo and CodeWarrior are registered trademarks
of Metrowerks Inc. Microware and OS-9 are registered trademarks of
Microware Systems Corp. Apple, Macintosh and Mac are registered trademarks
of Apple Computer, Inc. Windows and WindowsNT are registered trademarks or
trademarks of Microsoft Corp. in the United States and other countries. All
other company and product names may be registered trademarks or trademarks
of their respective companies/holders, and are hereby recognized.

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