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:
Apr. 03, 2007
Filed:
Dec. 29, 1999
Amit A. Merchant, Portland, OR (US);
Darrell D. Boggs, Aloha, OR (US);
David J. Sager, Portland, OR (US);
Amit A. Merchant, Portland, OR (US);
Darrell D. Boggs, Aloha, OR (US);
David J. Sager, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A processor is provided that includes an execution unit for executing instructions and a replay system for replaying instructions which have not executed properly. The replay system is coupled to the execution unit and includes a checker for determining whether each instruction has executed properly and a replay queue coupled to the checker for temporarily storing one or more instructions for replay. The replay queue may be used to store a long latency instruction, such as a load in which data must be retrieved from an external memory device. The long latency instruction and possibly one or more dependent instruction are stored in the replay queue until the long latency instruction is ready to be executed (e.g., data for the load instruction has been retrieved from external memory). Once the long latency instruction is ready to be executed, (e.g., the data is available), the long latency instruction may then be unloaded from the replay queue for re-execution.