Least recently used replacement level generating apparatus and m

Details Least recently used replacement level generating apparatus and m Least recently used replacement level generating apparatus and m

1989-09-01

1992-06-23

Gossage, Glenn

Boots, shoes, and leggings

3642463, 3642563, 364DIG1, 364DIG2, G06F 1212

Patent

active

051250853

ABSTRACT:
A virtual memory management cache memory system has a plurality of directory and buffer store levels for storing page descriptor information. The cache memory directories and a least recently used (LRU) apparatus for replacing information within the buffer store on a least recently used basis are constructed from the same type of standard cache address directory part. Programmable control circuits generate the required input data and control signals which are applied to the LRU apparatus for obtaining signals which indicate a next level to be replaced on a least recently used basis and for updating the contents of the LRU apparatus on a most recently used basis.

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