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:
Sep. 12, 2000
Filed:
Dec. 22, 1997
Applicant:
Inventors:
Thomas M Wicki, Palo Alto, CA (US);
Meera Kasinathan, Sunnyvale, CA (US);
Fong Pong, Mountain View, CA (US);
Ricky C Hetherington, Pleasanton, CA (US);
Assignee:
Sun Microsystems, Inc., Palo Alto, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
711143 ; 711136 ; 711137 ; 711122 ; 711129 ; 711134 ; 711135 ; 711144 ;
Abstract
A cache system including a data cache memory comprising a plurality of cache lines. A tag store has an entry representing each line in the cache memory where each entry comprises tag information for accessing the data cache. The tag information includes state information indicating whether the represented cache line includes dirty data. A speculative write back unit monitors the state information and is operative to initiate a write back of a cache line having more than a preselected amount of dirty data.