Auxiliary register file accessing technique

Details Auxiliary register file accessing technique Auxiliary register file accessing technique

1997-01-27

1998-12-01

Harrell, Robert B.

Electrical computers and digital processing systems: memory

Addressing combined with specific memory configuration or...

Addressing extended or expanded memory

G06F 1202

Patent

active

058453075

ABSTRACT:
Certain bits in existing op code formats for a processor do not change from one instruction to another when particular classes of instructions are used. Applicants optionally utilize one or more of these bits to identify one of a plurality of different register files from which to retrieve operands or to store the results of an operation. These bits along with allocated address bits in predetermined address fields now allow the processor to address many more registers. This can be used to increase the performance of the processor. Those programs not utilizing the bits outside of the address fields for designating a particular register file are backwards compatible with the modified processor.

REFERENCES:
patent: 4070703 (1978-01-01), Negi
patent: 4318175 (1982-03-01), Hawley
patent: 5615348 (1997-03-01), Koino et al.

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