The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2000
Filed:
Dec. 26, 1996
Applicant:
Inventors:
Gary Bewick, Palo Alto, CA (US);
John M Golenbieski, Sunnyvale, CA (US);
Assignee:
Micro Magic, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
711136 ; 711118 ; 711128 ; 711159 ; 711160 ;
Abstract
Two techniques are provided for implementing a least recently used (LRU) replacement algorithm for multi-way associative caches. A first method uses a special encoding of the LRU list to allow write only update of the list. The LRU list need only be read when a miss occurs and a replacement is needed. In a second method, the LRU list is integrated into the tags for each 'way' of the multi-way associative cache. Updating of the list is done by writing only the 'way' of the cache that hits.