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:
Jan. 12, 1993
Filed:
May. 15, 1990
Applicant:
Inventor:
Eric H Jensen, Livermore, CA (US);
Assignee:
Sun Microsystems, Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395425 ; 364D / ; 364231 ; 395400 ; 395650 ;
Abstract
A processor which has a plurality of windowed registers. Each of the windowed registers comprise IN, OUT and LOCAL window registers. The IN registers of each window are addressable as the OUT registers of a logically-adjacent succeeding window. The processor also has a cache of at least four sets of cache registers with switchable addresses. Each set of cache registers is capable of holding data of the IN, OUT or LOCAL window registers. The addresses of each set of cache registers are changed to the addresses of a different set of cache registers when the current window changes during a save or restore operation.