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:
Nov. 17, 1998
Filed:
Apr. 09, 1997
Douglas V Larson, Santa Clara, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Branch predictions are adjusted by interrupting a central processing unit and observing a pending branch instruction. An interrupt is generated using a counter, timer, or software-based interrupt. The interrupt causes a prediction adjustment routine to execute, which in turn determines whether a pending branch instruction will branch. The actual branch behavior of the branch instruction is compared to the predicted branch behavior of the branch instruction, and the prediction is adjusted accordingly based on the accuracy of the prediction and previous branch behavior. After the prediction has been adjusted (if necessary), execution returns to the program that contains the branch instruction that was evaluated.