Apparatus and method to preserve data in a set associative memor

Details Apparatus and method to preserve data in a set associative memor Apparatus and method to preserve data in a set associative memor

1994-12-20

1996-12-10

Robertson, David L.

395486, G06F 1212

Patent

active

055840140

ABSTRACT:
An apparatus and method to dynamically partition a set-associative memory device is described. The apparatus includes a set identification device to specify a group of set-associative data blocks in a cache memory or translation-lookaside buffer. A block replacement logic circuit is used to identify replaceable blocks within the set-associative data blocks that can store new information. The block replacement logic circuit is also used to identify un-replaceable blocks within the set-associative data blocks that cannot store new information. The block replacement logic circuit only writes new information to the replaceable blocks of the set-associative data blocks. The block replacement logic circuit can be implemented using a block replacement mask to identify within the set-associative data blocks the replaceable blocks and the un-replaceable blocks.

REFERENCES:
patent: 5353425 (1994-10-01), Malamy et al.
patent: 5357623 (1994-10-01), Megory-Cohen
Nayfeh, "Exploring the Design Space for a Shared-Cache Multiprocessor," Proceedings of The 21st Annual International Symposium on Computer Architecture, Apr. 18-21, 1994, Chicago, Illinois, pp. 166-175.
Patterson, et al., Computer Architecture: A Quantitative Approach, (Morgan Kaufmann Publishers, 1990) pp. 408-425.
Patterson, et al., Computer Organization and Design The Hardware/Software Interface, (Morgan Kaufmann Publishers, 1994) pp. 458-481, 501-515.

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