Interface protocol for testing of a cache memory

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39518501, 39518312, G06F 1100

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056175345

ABSTRACT:
A computer system includes a microprocessor and an external cache memory coupled to the microprocessor. The cache memory includes a memory array and an apparatus for initiating a routine to test the integrity of the memory array in response to a signal asserted by the microprocessor. The apparatus generates a two-bit status signal coupled to the microprocessor for communicating IDLE, ACTIVE, PASS and FAIL states of the test routine. The apparatus initiates the test routine a predetermined of number clock cycles after the assertion of the signal provided by the microprocessor.

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"The Metaflow Architecture", pp. 10-13 and 63-73, by Val Popescu, Merle Schultz, John Spracklen, Gary Gibson, Bruce Lightner, and David Isaman, IEEE Micro, 1991.

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