Multiprocessor system having mutual exclusion control function

Details Multiprocessor system having mutual exclusion control function Multiprocessor system having mutual exclusion control function

1983-02-01

1986-11-04

Shaw, Gareth D.

Boots, shoes, and leggings

364134, G06F 918, G06F 938

Patent

active

046213180

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.

REFERENCES:
patent: 3896418 (1975-07-01), Brown
patent: 4073005 (1978-02-01), Parkin
patent: 4214305 (1980-07-01), Tokita et al.
patent: 4268904 (1981-05-01), Suzuki et al.
patent: 4308580 (1981-12-01), Ohlaki
patent: 4313161 (1982-01-01), Hardin et al.
patent: 4422142 (1983-12-01), Inaba et al.

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