Boots – shoes – and leggings
Patent
1989-03-27
1992-11-10
Lee, Thomas C.
Boots, shoes, and leggings
3642281, 3642306, 3642389, 36424291, 3642431, 3642457, 3642665, 3649266, 36493146, 3649418, 3649427, 3649645, 3649692, 3649705, 364DIG1, 395725, 395250, G06F 1314, G06F 1316
Patent
active
051631440
ABSTRACT:
In an information processing system comprising a main memory device, a plurality of processors, a system controller between the main memory device and the processors, and an extended buffer memory for carrying out a data transfer operation to and from the main memory device, the system controller comprises a communication lock circuit for selectively indicating a locked state and an unlocked state representative of a state of the extended buffer memory. The communication lock circuit is accessed to detect the state of the extended buffer memory each time when either a lock instruction or a lock release instruction is issued from each processor before a data transfer request is delivered from each processor to the extended buffer memory.
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J. C. Daly and J. T. Rodell Time-out/Voting Algorithm for Resource Contention in N-way Multiprocessing Systems IBM Technical Disclosure Bulletin, vol. 26, No. 2 Jul. 1983.
Kim Ken S.
Lee Thomas C.
NEC Corporation
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