Distributed reference and change table for a virtual memory...

Details Distributed reference and change table for a virtual memory... Distributed reference and change table for a virtual memory...

G - Physics

06

F

354/242

G06F 12/08 (2006.01) G06F 12/12 (2006.01)

Patent

CA 1314108

70840-147 DISTRIBUTED REFERENCE AND CHANG TABLE FOR A VIRTUAL MEMORY SYSTEM ABSTRACT OF THE DISCLOSURE A distributed reference and change table 36 for a virtual memory system 10 is disclosed to have a number of storage locations at least equal to the maximum number of data blocks of an assocated read/write physical memory. A memory module 24 is disclosed to be comprised of a plurality of data words organized into n number of data blocks. The memory module further comprises an integral reference and change table having at least n storage locations each comprised of at least two bits, one bit indicating the occurrence of an access (reference) to a corresponding data block and the other bit indicating if the access was a write (or change) type of access. In accordance with the invention there is also disclosed a plurality of such memory modules physically and electrically coupled to a common memory carrier module, each of the plurality of memory modules comprising the integral reference and change table.

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