Apparatus for page tagging in a computer system

Details Apparatus for page tagging in a computer system Apparatus for page tagging in a computer system

1989-08-21

1990-11-06

Popek, Joseph A.

Static information storage and retrieval

Associative memories

Ferroelectric cell

36518901, G11C 1500

Patent

active

049691228

ABSTRACT:
A caching system which includes a main memory divided into a predetermined number of pages having a predetermined number of columns and lines of storage elements, a cache memory haivng the same number of lines of storage elements as the pages of main memory and a number of columns sufficient to store the information in any line of main memory plus the address of the information in main memory, apparatus for transferring between cache memory and main memory information and addresses indicative of the position in main memory represented by any particular information in cache memory, the addresses including an offset indicating the particular line of the page of main memory and a number of bits indicating only one of a limited number of pages which may be stored in the cache at one time, and a page number cache having a line number equal to the number of pages which may be stored in the cache and a column number sufficient to store the tag address of a line stored in the cache.

REFERENCES:
patent: 3845474 (1974-10-01), Lange et al.
patent: 4168541 (1979-09-01), DeKarskr

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