Expandable four-port register file

Details Expandable four-port register file Expandable four-port register file

1984-10-10

1986-09-02

Moffitt, James W.

Static information storage and retrieval

Addressing

G11C 800

Patent

active

046100040

ABSTRACT:
A two read-port, two write-port register file on a single integrated circuit chip provides dual read/write access via either an "A"-side or a "B"-side of a single array of addressable registers. Separate on-chip "A"-side and "B"-side multiplexers permit reading or writing of an independently addressed register according to the phase of the "A"-side or "B"-side clock. Writing can be selectively effected to either a high-order and/or a low-order byte within the addressed register. Unidirectional busses connect each register to each of the four ports. The register can be expanded to provide a four read-port, two write-port register file such as is required for the parallel computation of addresses and data.

REFERENCES:
patent: 4125877 (1978-11-01), Reinert

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