MULTIPROCESSOR SYSTEM HAVING MUTUAL EXCLUSION CONTROL FUNCTION

摘要

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.