Distributed reference and change table for a virtual memory syst

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

1985-03-18

1990-04-10

Lee, Thomas C.

Boots, shoes, and leggings

3642338, 3642441, 3642543, 364264, 36523003, G06F 1208, G06F 1206

Patent

active

049166034

ABSTRACT:
A distributed reference and change table 36 for a virtual memory system 10 has a number of storage locations at least equal to the maximum number of data blocks of an associated read/write physical memory. A memory module 24 has a plurality of data words organized into n number of data blocks. The memory module includes an integral reference and change table having at least n storage locations each having 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. A plurality of such memory modules are physically and electrically coupled to a common memory carrier module, each of the plurality of memory modules having an integral reference and change table.

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