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. 03, 2005
Filed:
Apr. 02, 2001
Kevin J. Mcgrath, Los Gatos, CA (US);
Ramsey W. Haddad, Cupertino, CA (US);
Bruce R. Holloway, Boulder Creek, CA (US);
I-cheng K. Chen, Sunnyvale, CA (US);
Kevin J. McGrath, Los Gatos, CA (US);
Ramsey W. Haddad, Cupertino, CA (US);
Bruce R. Holloway, Boulder Creek, CA (US);
I-Cheng K. Chen, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A processor supports multiple operand sizes (e.g. 8, 16, 32, and 64 bit operand sizes, in one embodiment). Additionally, the processor determines how to update a destination register when an operand size less than the largest operand size is used. In one embodiment, the processor determines whether or not to zero extend the result responsive to the operand size used. In one particular embodiment, the processor zero extends 32 bit operands and does not zero extend 8 or 16 bit operands. Furthermore, the processor may preserve the value in at least part of the remaining portion of the register when 8 or 16 bit operand sizes are used.