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:
Mar. 03, 1998
Filed:
Nov. 17, 1995
Applicant:
Inventors:
John S Kuslak, Blaine, MN (US);
Gary J Lucas, Pine Springs, MN (US);
Assignee:
Unisys Corporation, Blue Bell, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395381 ; 395591 ;
Abstract
A method of and apparatus for efficiently halting the operation of the instruction processor when a cache miss is detected. Generally, this is accomplished by preventing unwanted address incrementation of an instruction address pipeline and by providing a null instruction to an instruction pipeline when a cache miss is detected. Accordingly, the present invention may eliminate a recovery period after a cache miss, thereby enhance the performance of the data processing system. Further, the present invention may eliminate recovery hardware required to support the recovery process.