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. 03, 2012
Filed:
Dec. 15, 2004
Franck R. Diard, Mountain View, CA (US);
Rick M. Iwamoto, Cupertino, CA (US);
Franck R. Diard, Mountain View, CA (US);
Rick M. Iwamoto, Cupertino, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
A system and method for remapping and redirecting accesses to a memory space shared between graphics devices permits a single device driver to interface between an application program and multiple graphics devices. Each graphics device provides configuration information to the BIOS (basic input/output system), particularly memory space requirements for prefetchable and non-prefetchable memory spaces. A memory space allocation for the graphics devices is determined based on the configuration information. A switch device, interfacing between a host processor and each graphics device, is programmed to redirect accesses to a portion of the allocated memory space to only one of the graphics devices. Accesses to another portion of the allocated memory space may be remapped to all of the graphics devices or a subset of the graphics devices.