Control store organization in a microprogrammed data processing

Details Control store organization in a microprogrammed data processing Control store organization in a microprogrammed data processing

1980-01-29

1981-02-17

Shaw, Gareth D.

Boots, shoes, and leggings

G06F 1300, G06F 930

Patent

active

042518628

ABSTRACT:
A microprogram control system comprising first and second control memories each supplied with microinstructions. The microprogram control system usually executes a microinstruction of a prescribed bit length read out of the first control memory. The first control memory contains data instructing the use of the second control memory. When the first control memory sends forth data instructing the use of the second control memory, a composite microinstruction of larger bit length is executed. The composite microinstruction is formed of a microinstruction read out of the first control memory and a microinstruction read out of the second control memory.

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