Selecting register or previous instruction result bypass as sour

Details Selecting register or previous instruction result bypass as sour Selecting register or previous instruction result bypass as sour

1998-03-20

2000-11-07

Kim, Kenneth S.

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Commitment control or register bypass

712219, G06F 938

Patent

active

06145074&

ABSTRACT:
A data processing device having a pipeline bypass function passes an operation result of a preceding instruction to a succeeding instruction as a source operand before writing the operation result to a register. A source operand bypass specification field and a source operand register field in the instruction code are provided to control passing of the operation result. A source operand selector responds to the source operand bypass specification field by selecting data either from the register or the bypasses as a pipeline input data.

REFERENCES:
patent: 5805852 (1998-09-01), Nakanishi
patent: 5842036 (1998-11-01), Hinton et al.
patent: 5872986 (1999-02-01), Heeb
patent: 5958043 (1999-09-01), Motomura

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