Data processing systems with process monitor
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United States of America Patent
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Feb 25, 2003
Grant Date -
Sep 13, 2001
app pub date -
Mar 9, 2001
filing date -
Mar 9, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A processing system has a processor with a memory map identifying locations in a memory where data are stored, data associated with an application being stored at the same location every time an application is run. The processor runs each application during specified processing time slots. A monitor contains information as to the memory locations associated with each application and the time slots during which each application should be run. The monitor also has a register containing a keyword, which is compared with a keyword supplied by the processor 1 when it switches between user mode and supervisory mode so that the monitor denies access to memory locations associated with the other mode.
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