Microprocessor with reduced microcode space requirements due to

Electrical computers and digital processing systems: processing – Processing control – Generating next microinstruction address

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712245, 712234, G06F 900

Patent

active

059580461

ABSTRACT:
A circuit (10) for producing a microprogram memory address (16). This circuit includes circuitry (18I, 18J) for selecting a plurality of condition codes. Additionally, the circuit includes logic circuitry (20) for producing a result by performing logic operations using as operands the selected plurality of condition codes. The result of the logic operations forms a first portion (LSB', or LSB' and NLSB') of the microprogram memory address.

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