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. 21, 2002
Filed:
Oct. 01, 1999
Chih-Jui Peng, San Jose, CA (US);
Margaret Gearty, Bath, GB;
Naohiko Irie, Santa Clara, CA (US);
Tony L. Werner, San Jose, CA (US);
Hitachi Ltd., Tokyo, JP;
Abstract
A processor having an execution pipeline and a cache memory including a plurality of cache blocks with instruction words held in selected ones of the cache blocks. An ICBI address buffer is provided for holding addresses of instruction cache blocks to be invalidated by ICBI instructions pending in the processor's execution pipeline. An instruction cache controller coupled to the cache memory generates cache accesses to invalidate specified cache blocks in response to receiving buffered addresses from the ICBI address buffer. Preferably the cache accesses serve to commit ICBI instructions to the instruction cache asynchronously with respect to the processor's execution pipeline.