Instruction register content modification using plural input gat

Details Instruction register content modification using plural input gat Instruction register content modification using plural input gat

1981-04-03

1984-04-03

Thomas, James D.

Boots, shoes, and leggings

G06F 900, G06F 922, G06F 930

Patent

active

044411537

ABSTRACT:
The instruction register (IR), of a data processing system, stores a program instruction during at least an initial operation code decoding phase to initiate execution of the instruction. The IR (13) has a number of input gates in addition to the input gates from a program storing main storage device. The additional input gates respond to control or logic signals for gating information from the data flow hardware (40) to the instruction register.

REFERENCES:
patent: 3503046 (1970-03-01), Geissler
patent: 3585599 (1971-06-01), Hitt et al.
patent: 4200927 (1980-04-01), Hughes et al.
patent: 4262330 (1981-04-01), Berglund et al.
patent: 4338661 (1982-07-01), Tredennick et al.
patent: 4348724 (1982-09-01), Cushing et al.
patent: 4373182 (1983-02-01), Schultz et al.
patent: 4398247 (1983-08-01), Bazlen et al.

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