Data processing systems

Details Data processing systems Data processing systems

1977-02-04

1978-09-05

Atkinson, Charles E.

Boots, shoes, and leggings

G06F 700

Patent

active

041124898

ABSTRACT:
In a pipelined data processor, each processing stage is provided with its own copies of relevant machine registers. Whenever a processing stage updates a register, it sets a flag. The flags and register copies are shifted along in step with the flow instructions down the pipeline. These flags are used to control multiplexers which ensure that each stage is provided with the most up-do-date copy of each register, taking into account any updates by succeeding stages.

REFERENCES:
patent: 3771137 (1973-11-01), Barner et al.
patent: 3875391 (1975-04-01), Shapiro et al.
patent: 3900836 (1975-08-01), Salvo
patent: 3949379 (1976-04-01), Ball
patent: 3978452 (1976-08-01), Barton et al.
patent: 3988719 (1976-10-01), Whitby et al.

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