Data processor with microcode memory compression

Details Data processor with microcode memory compression Data processor with microcode memory compression

1993-03-26

1995-04-25

Bowler, Alyssa H.

Boots, shoes, and leggings

3642446, 364DIG1, G06F 922

Patent

active

054107253

ABSTRACT:
A data processor has a microcode memory which is reduced in size by sharing word locations having the same contents. When one of the shared word locations is addressed, a control signal is generated and coupled to a select circuit. The select circuit outputs a predetermined operand in place of the contents of the addressed shared word location which can contain a "do not care" operand value. Selective sharing or combining of the word locations is utilized when structuring the memory to optimize savings in circuit area.

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patent: 4573118 (1986-02-01), Pamouny et al.
patent: 4755962 (1988-07-01), Mor
patent: 4812971 (1989-03-01), Butts, Jr. et al.
patent: 5046040 (1991-09-01), Miyoshi
patent: 5053954 (1991-10-01), Miyoshi

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