Multiprocessor system having mutual exclusion control function
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United States of America Patent
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Nov 4, 1986
Grant Date -
N/A
app pub date -
Feb 1, 1983
filing date -
Feb 16, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiprocessor system includes a plurality of processors which are respectively connected to a memory device and each of which produces a first control signal when executing a test-and-set instruction and a second control signal after executing a sequence of queuing steps. The multiprocessor system further has flip-flop circuits each of which is set in response to the first control signal from the corresponding one of the processors and which are commonly reset in response to a secnd control signal from any one of the processors. The processors are prevented from executing the test-and-set instruction while the corresponding one of the flip-flop circuits is set.
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