Communications: electrical – Digital comparator systems
Patent
1974-04-25
1976-01-20
Shaw, Gareth D.
Communications: electrical
Digital comparator systems
3401725, G06F 918
Patent
active
039342328
ABSTRACT:
In a data processing system having independently operating asynchronous processors, apparatus is disclosed which provides for interprocessor synchronization and/or information exchange. Synchronization interlocks and controls are provided for both identifying shared resources of a control processor and an input/output controller (IOC) processor and for obtaining control over these shared resources. If a conflict situation for any one of the shared resources arises, apparatus is disclosed whereby the IOC processor is provided the capability of assuming control over the shared resource even though the central processor has control over it. One of the shared resources is an interprocessor communication register which allows communication of control information between both the central processor and the IOC processor and from the central processor to the peripheral processor over a shared bus.
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Curley John L.
Richard Roger R.
Frank D. A.
Honeywell Information Systems Inc.
Reiling R. T.
Shaw Gareth D.
Vandenburg John P.
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