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. 04, 2014
Filed:
Aug. 11, 2011
Thomas B. Chadwick, Jr., Essesx Junction, VT (US);
Robert D. Herzl, South Burlington, VT (US);
Kenneth A. Lauricella, Colchester, VT (US);
Arnold S. Tran, South Burlington, VT (US);
Thomas B. Chadwick, Jr., Essesx Junction, VT (US);
Robert D. Herzl, South Burlington, VT (US);
Kenneth A. Lauricella, Colchester, VT (US);
Arnold S. Tran, South Burlington, VT (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A cache for use in a central processing unit (CPU) of a computer includes a data array; a tag array configured to hold a list of addresses corresponding to each data entry held in the data array; a least recently used (LRU) array configured to hold data indicating least recently used data entries in the data array; a line fill buffer configured to receive data from an address in main memory that is located external to the cache in the event of a cache miss; and a shadow register associated with the line fill buffer, wherein the shadow register is configured to hold LRU data indicating a current state of the LRU array.