Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2008-04-08
2008-04-08
Bragdon, Reginald (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S170000
Reexamination Certificate
active
07356649
ABSTRACT:
A semiconductor data processor has a first memory(6) constituting a cache memory, a second memory(20) capable of being a cacheable area or a non-cacheable area by the first memory, and a read buffer(12) capable of carrying out an operation for outputting data corresponding to a read access when the second memory is read accessed as the non-cacheable area. The designation of the cacheable area and the non-cacheable area for the second memory is determined by the designation of a cacheable area or a non-cacheable area for a memory space to which the second memory is mapped. The designation may be carried out in the operation mode of the data processor or by setting a control register, for example.
REFERENCES:
patent: 5410669 (1995-04-01), Biggs et al.
patent: 5432943 (1995-07-01), Mitsuishi
patent: 5701425 (1997-12-01), Nakahara
patent: 6134641 (2000-10-01), Anand
patent: 6678790 (2004-01-01), Kumar
patent: 2002/0029322 (2002-03-01), Koga
patent: 1-142844 (1989-06-01), None
patent: 5-307485 (1993-11-01), None
patent: 6-103064 (1994-04-01), None
patent: 6-309216 (1994-11-01), None
patent: 6-348593 (1994-12-01), None
patent: 2000-148584 (2000-05-01), None
patent: 2001-256108 (2001-09-01), None
patent: 2001-282616 (2001-10-01), None
Ishikawa Makoto
Kamei Tatsuya
Kondoh Yuki
Bragdon Reginald
Cardwell Eric S
Miles & Stockbridge P.C.
Renesas Technology Corp.
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