Branch predictor using random access memory

Details Branch predictor using random access memory Branch predictor using random access memory

1980-10-21

1983-01-25

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 942

Patent

active

043707114

ABSTRACT:
A system is provided for predicting in advance the result of a conditional branch instruction in a computer system. The system includes a hash mechanism, a random access memory, an address buffer, a branch outcome result receiving means and a counter buffer. The hash mechanism and memory use the input branch instruction address to produce a count which in effect is a way of weighting recent branch history to predict the branch decision. The counts are stored in the random access memory (RAM). The random access memory is addressed by the hashed branch instruction address to produce the system result.

REFERENCES:
patent: 4124893 (1978-11-01), Joyce et al.
patent: 4176394 (1979-11-01), Kaminski et al.

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