Method for improved first level cache coherency

Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories

Reexamination Certificate

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Details

C711S122000, C711S146000

Reexamination Certificate

active

07069391

ABSTRACT:
A method of and apparatus for improving the efficiency of a data processing system employing a multiple level cache memory system. The efficiencies result from invalidating level one cache information based upon a level one cache memory write. Similarly, the invalidation can occur from system bus SNOOPs. In addition, level one and level two cache memory misses result in loading and recording of the requested data into both level one and level two cache memories. Furthermore, a level two cache memory parity error results in invalidation of the corresponding level one cache memory data.

REFERENCES:
patent: 4056844 (1977-11-01), Izumi
patent: 4349871 (1982-09-01), Lary
patent: 4442487 (1984-04-01), Fletcher et al.
patent: 4525777 (1985-06-01), Webster et al.
patent: 4755930 (1988-07-01), Wilson, Jr. et al.
patent: 4794521 (1988-12-01), Ziegler et al.
patent: 4807110 (1989-02-01), Pomerene et al.
patent: 4843542 (1989-06-01), Dashiell et al.
patent: 4860192 (1989-08-01), Sachs et al.
patent: 4891809 (1990-01-01), Hazawa
patent: 5023776 (1991-06-01), Gregor
patent: 5025365 (1991-06-01), Mathur et al.
patent: 5025366 (1991-06-01), Baror
patent: 5283876 (1994-02-01), Tague
patent: 5564035 (1996-10-01), Lai
patent: 5627993 (1997-05-01), Abato et al.
patent: 5778433 (1998-07-01), Collins et al.
patent: 6021468 (2000-02-01), Arimilli et al.
patent: 6061766 (2000-05-01), Lynch et al.
patent: 6115791 (2000-09-01), Collins et al.
patent: 6128711 (2000-10-01), Duncan et al.
patent: 6253291 (2001-06-01), Pong et al.
patent: 6397300 (2002-05-01), Arimilli et al.
patent: 6425060 (2002-07-01), Mounes-Toussi et al.
patent: 6446167 (2002-09-01), Mayfield et al.

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