Method for decoupling pipeline stages

Details Method for decoupling pipeline stages Method for decoupling pipeline stages

1997-06-27

1999-06-29

Lall, Parshotam S.

395392, 395391, 395390, 395381, 395386, 395393, G06F 938, G06F 9312, G06F 9315

Patent

active

059180340

ABSTRACT:
The present invention solves the problems associated with the prior art by decoupling the issuing of instructions from their dispatch into their respective pipeline. This permits the determination of whether a particular instruction can safely be issued from an instruction queue to the next stage of the pipeline by providing such information at a point early in the machine cycle. In a multistage pipeline, a first stage is bypassed to provide instructions to a second stage regardless of the ability of the first stage to store the instruction from the instruction issuing unit.

REFERENCES:
patent: 3771138 (1973-11-01), Celtruda et al.
patent: 4635194 (1987-01-01), Burger et al.
patent: 5586277 (1996-12-01), Brown et al.
patent: 5613080 (1997-03-01), Ray et al.
patent: 5640588 (1997-06-01), Vegesna et al.
patent: 5699537 (1997-12-01), Sharangpani et al.

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