Apparatus and method for testing a buffer memory device which ch

Details Apparatus and method for testing a buffer memory device which ch Apparatus and method for testing a buffer memory device which ch

1993-12-28

1995-10-31

Voeltz, Emanuel T.

Excavating

371 212, 371 251, 364579, 364580, G11C 2900

Patent

active

054636370

ABSTRACT:
A method and a device for invalidating data stored in a buffer memory of a system equipped with a high-speed buffer memory which stores a copy of data stored in a main memory. The invalidation of the data stored in the buffer memory for commands can be tested even where there exists a buffer memory for commands and a buffer memory for operands independent of each other. A testing unit stores a sequence of recurring commands in a storage region of the main memory, holds a copy of the sequence of recurring commands in a storage region of the buffer memory, and takes out a sequence of successive processing commands from a processing unit to substitute it for the sequence of recurring commands in the storage region of the main memory. The storage region of the buffer memory is invalidated by an invalidation unit, the processing unit 1 executes the processing directed to the storage region, and whether the invalidation is correctly effected or not is judged based upon the content of execution.

REFERENCES:
patent: 5022028 (1991-06-01), Edmonds et al.
patent: 5218605 (1993-06-01), Low et al.

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