Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1997-08-15
2000-09-19
Cabeca, John W.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
711129, 711147, G06F 1200
Patent
active
061227080
ABSTRACT:
A data cache system operates with an execution unit for processing data and a memory for storing data. The data cache system includes a data cache memory for temporarily storing data from the memory for access by the execution unit, and a controller. The controller reads and writes normal data in the entire cache memory in a normal mode and reads and writes streaming data in a streaming buffer in a streaming mode. The streaming buffer is a section of the data cache memory. The streaming buffer preferably has a capacity that is small in comparison with the capacity of the data cache memory. The normal data is characterized by temporal locality, whereas the streaming data is characterized by spatial locality. One or more bits of the data address are associated with the cache index in the normal mode and are associated with the tag in the streaming mode.
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Faraboschi Paolo
Fisher Joseph A.
Bataille Pierre-Michel
Cabeca John W.
Hewlett--Packard Company
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