Microprogrammed control system

Details Microprogrammed control system Microprogrammed control system

1977-04-04

1979-12-18

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 916, G06F 920

Patent

active

041797310

ABSTRACT:
A microprogrammed control system comprises: a memory for storing a microprogram programmed with microinstructions; a memory for storing microinstructions for branching microinstruction; an address register for storing the address of the microinstruction to be next executed; and a microinstruction register for storing the microinstruction to be executed. The program operation of the microprogrammed control system depends on whether the micro-instruction stored in the microinstruction register is the branching one or not. In the case of non-branching microinstruction, the operation of ordinary microinstructions is executed. In the case of branching microinstruction, a special operation is executed for making the operation of the branching microinstruction equivalent to that of the ordinary microinstruction.

REFERENCES:
patent: 3644900 (1972-02-01), Mizoguchi
patent: 3736567 (1973-05-01), Lotan et al.
patent: 3764988 (1973-10-01), Onishi
patent: 3775756 (1973-11-01), Balser
patent: 3940741 (1976-02-01), Horikoshi et al.
patent: 3956738 (1976-05-01), Tessera

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