Patent
1994-12-21
1997-12-23
Harvey, Jack B.
395440, 395445, G06F 1200
Patent
active
057015031
ABSTRACT:
A method and apparatus for transferring information between a processor and a memory system utilizing a chunk write buffer, where read and write requests to the L2 cache memory are controlled by the processor. The cache line associated with each such request is larger than the interface coupling the L2 cache memory and the processor. Read requests are returned from the L2 cache memory to the processor in burst fashion. Write requests are transferred from the processor to the L2 cache memory during clock cycles in which the processor does not require the interface for a read request. Write requests need not be transferred in burst fashion; rather, a portion of the write request corresponding to the size of the interface, referred to as a chunk, is transferred from the processor to the L2 cache memory and stored temporarily in the chunk write buffer. When the processor has transferred the entire cache line to the L2 cache memory, the processor signals the L2 cache memory to transfer the contents of the chunk write buffer into the data array of the cache memory.
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Bauer John M.
Rhodehamel Michael W.
Sarangdhar Nitin V.
Singh Gurbir
Wang Wen-Hann
Etienne Ario
Harvey Jack B.
Intel Corporation
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