Input/output multiplexer for a data processing system

Details Input/output multiplexer for a data processing system Input/output multiplexer for a data processing system

1983-12-12

1985-12-24

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 300

Patent

active

045610533

ABSTRACT:
In an input/output multiplexer of a data processing unit, a plurality of components, capable of independent activity, provide for the simultaneous execution of a multiplicity of operations involving the exchange of signal groups between a central subsystem and peripheral subsystems. The input/output multiplexer includes apparatus for controlling the receipt from delivery to the central subsystem and peripheral subsystems of signal groups. Apparatus is provided to execute address development normally performed in the central subsystem. Apparatus is also provided to analyze control subsystem signal groups and generate pre-selected command signal groups for delivery to the central subsystem or to the peripheral subsystems. Apparatus in the input/output multiplexer also provides a status of each operation currently in execution.

REFERENCES:
patent: 3200380 (1965-08-01), MacDonald
patent: 3369221 (1968-02-01), Lethin
patent: 3408632 (1968-10-01), Hauck
patent: 3676846 (1972-07-01), Busch
patent: 3681755 (1972-08-01), Stone
patent: 4390943 (1983-06-01), Twibell et al.

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