Method of reducing access when passing data from external memory

Details Method of reducing access when passing data from external memory Method of reducing access when passing data from external memory

1997-12-24

2000-02-29

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

710129, 711163, 711165, G06F 1314, G06F 1312

Patent

active

060322063

ABSTRACT:
A method for passing data of an external memory device through a buffer to a data processor is provided. The method divides the storage region of the buffer into two subregions, and passes a first data set read from the external memory device through one of the two subregions to the data processor in response to a first instruction of the data processor. When a second data set required by said data processor is the same as the first data set, the data stored in the one subregion is passed directly to the data processor instead of retrieving the same from the external memory device. When the second data is different from the first data, it is read from the external memory device and passed through the other allocated subregion to the data processor.

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patent: 5832308 (1998-11-01), Nakamura et al.
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