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:
Jul. 06, 1999
Filed:
Mar. 26, 1996
Larry Widigen, Salinas, CA (US);
Elliot A Sowadsky, Santa Clara, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A structure for, and a method of operating, an operand cache to store operands retrieved from a memory. An instruction requiring an operand stored in the memory, is allowed to speculatively execute in an execution unit of a processor using an operand stored in an entry (corresponding to the address of the instruction) of the operand cache. When the actual operand is later retrieved from the memory it is compared to the cached operand used for speculative execution. If the cached and actual operands are unequal then the speculatively executed instruction and all subsequent instructions are aborted and the processor resumes execution at the address of the instruction that was speculatively executed.