Apparatus for dispatching data of the highest priority process h

Details Apparatus for dispatching data of the highest priority process h Apparatus for dispatching data of the highest priority process h

1975-03-26

1977-06-07

Malzahn, David H.

Communications: electrical

Digital comparator systems

G06F 918

Patent

active

040286649

ABSTRACT:
A dispatcher mechanism for assigning to a processor the highest priority peripheral having the highest priority request. In a data processing system having at least one processor, and a plurality of peripheral devices coupled to a system interface unit SIU utilized for communication between said processor and peripheral devices, and also having a plurality of processes competing for control of said processor, a priority interrupt mechanism determines the highest priority peripheral having the highest priority request and then provides an interrupt signal to the processor. A release instruction REL is used to exit the process. The dispatcher mechanism dispatches data to the processor upon request from the processor in order to give control of the processor to the highest priority request.

REFERENCES:
patent: 3648252 (1972-03-01), Thron et al.
patent: 3676861 (1972-07-01), Ruth
patent: 3702462 (1972-11-01), England
patent: 3812463 (1974-05-01), Lahti

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