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:
May. 23, 1995
Filed:
Apr. 30, 1992
Lishing Liu, Pleasantville, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A cache control maintains a history table SETLAT for the prediction of line entry (i.e., set member) within a congruence class for cache accessing. For a given cache access, a SETLAT entry can be selected based on the requesting logical address bits directly. The selection of a SETLAT entry may also be based on the hashing of such logical address bits together with other information in order to achieve sufficient randomization. A similar hashing history table may be devised to predict virtual address translation information with high accuracy. Such prediction mechanisms not only allow efficient implementation of the cache access path but also offer the opportunity of achieving multiple accesses per cycle. The proposed prediction method also provides a generic approach to efficient implementations for various directory based table accesses.