Apparatus and method to speculatively initiate primary memory ac

Details Apparatus and method to speculatively initiate primary memory ac Apparatus and method to speculatively initiate primary memory ac

1996-05-31

1998-06-02

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

711158, 711168, 395877, G06F 1208, G06F 1318

Patent

active

057617082

ABSTRACT:
A central processing unit with an external cache controller and a primary memory controller is used to speculatively initiate primary memory access in order to improve average primary memory access times. The external cache controller processes an address request during an external cache latency period and selectively generates an external cache miss signal or an external cache hit signal. If no other primary memory access demands exist at the beginning of the external cache latency period, the primary memory controller is used to speculatively initiate a primary memory access corresponding to the address request. The speculative primary memory access is completed in response to an external cache miss signal. The speculative primary memory access is aborted if an external cache hit signal is generated or a non-speculative primary memory access demand is generated during the external cache latency period.

REFERENCES:
patent: 3896419 (1975-07-01), Lange et al.
patent: 4847758 (1989-07-01), Olson et al.
patent: 4858111 (1989-08-01), Steps
patent: 5210845 (1993-05-01), Crawford et al.
patent: 5325508 (1994-06-01), Parks et al.
patent: 5553270 (1996-09-01), Rosenbluth

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