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Patent Searching and Data


Title:
DATA PROCESSOR
Document Type and Number:
Japanese Patent JPH03171340
Kind Code:
A
Abstract:

PURPOSE: To improve the cache access performance by sweeping the block data to a cache after replacing the data received from a bypass buffer with the data received from a store buffer in response to the control information on a store request.

CONSTITUTION: A store buffer 4 stores the data on a store request given to a cache memory 1 as well as the control information showing the validity/ invalidity of the data. A selection control circuit 9 and the switch circuits 8 and 10 select one of both data read out of the same addresses of the buffer 4 and a bypass buffer 2 for each byte in response to the control information. Then a writing means writes the selected data into the memory 1. If a store request is produced to the main storage address of the block data registered or under registration into the buffer 2, the store processing is carried out without waiting. Thus the cache access performance is improved.


Inventors:
Takusagawa, Junichi
Application Number:
JP1989000311874
Publication Date:
July 24, 1991
Filing Date:
November 30, 1989
Export Citation:
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Assignee:
KOUFU NIPPON DENKI KK
International Classes:
G06F12/08; (IPC1-7): G06F12/08



 
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