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The First IEEE International Workshop on Electronic Design, Test and Applications (DELTA '02)
PARTOS-11: an Efficient Real-Time Operating System for Low-Cost Microcontrollers
Christchurch, New Zealand
January 29-January 31
ISBN: 0-7695-1453-7
Yao Li, Christchurch Polytechnic Institute of Technology
Paul Wilson, Christchurch Polytechnic Institute of Technology
An efficient real-time operating system, PARTOS-11, has been developed for a low-speed and small-memory microcontroller, 68HC11. The size of the kernel is 2 Kbytes. Both hard real-time tasks and soft real-time tasks can be run in the system concurrently. The rate-monotonic policy is adopted for scheduling hard real time tasks, which guarantees that all tasks meet their deadline if the condition of Liu and Layland's theorem is met. A novel model, the Slack Sharing Server (SSS), was proposed and implemented. The SSS is a simple and efficient server for soft real time tasks running together with hard real time tasks in a small real-time embedded system.
Index Terms:
embedded microcontroller, real-time operating system, slack sharing server
Citation:
Yao Li, Paul Wilson, "PARTOS-11: an Efficient Real-Time Operating System for Low-Cost Microcontrollers," delta, pp.235, The First IEEE International Workshop on Electronic Design, Test and Applications (DELTA '02), 2002
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