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:
Nov. 10, 1992
Filed:
Jun. 22, 1990
Applicant:
Inventor:
Paul Mageau, Townsend, MA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395425 ; 3642434 ; 36424341 ; 3642443 ; 364D / ; 364265 ; 3642653 ; 3649642 ; 36496434 ;
Abstract
An efficient cache write technique useful in digital computer systems wherein it is desired to achieve single cycle cache write access even when the processor cycle time does not allow sufficient time for the cache control to check the cache 'tag' for validity and to reflect those results to the processor within the same processor cycle. The novel method and apparatus comprising a two-stage cache access pipeline which embellishes a simple 'write-thru with write-allocate' cache write policy.