Interprocessor communication system

Details Interprocessor communication system Interprocessor communication system

1981-08-05

1983-08-30

Heckler, Thomas M.

Boots, shoes, and leggings

G06F 1300

Patent

active

044020465

ABSTRACT:
A communication mechanism for use in a multi-processing system wherein several processors share a common memory. Each processor has associated with it a local communication segment, stored in memory. The local communication segment is for processor-specific communication. Another segment, the global communication segment, is common to all processors, and is for system-wide communication. Each communication segment has a field containing control flags. The flags are set by one processor and later inspected by the same or another processor. The inspecting processor is instructed to perform a number of functions specified by the state of the control flags. A count field and a lock field are provided in all communication segments to interlock access to the communication mechanism. A status field is provided in the local communication segments. Processors take the state of the status field into consideration when interpreting the control fla

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