Boots – shoes – and leggings
Patent
1984-12-05
1989-04-25
Clark, David L.
Boots, shoes, and leggings
G06F 922
Patent
active
048253634
ABSTRACT:
A controller of a microprocessor includes a control store for storing microinstructions. A programmable logic array (PLA), enabled when a predetermined macroinstruction type is to be executed, translated the operand field of the macroinstruction into information bits which are used to modify the microinstruction as it is being fetched from the control store. The bits of the microinstruction which are changeable are coupled from the control store to a first input of a multiplexer. The output of the PLA is coupled to a second input of the multiplexer. A select signal for the multiplexer is generated when the predetermined instruction type is to be excuted, thereby effecting a modification of the fetched microinstruction, and yielding a modification to the basic operation of the macroinstruction.
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Baer, J. L., "Computer Systems Architecture," Computer Science Press, 1980, pp. 334-346.
Baumann Burke B.
Wilson Troy K.
Clark David L.
Honeywell Inc.
Lenkszus D. J.
Medved A.
Sapelli A. A.
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