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. 11, 2000
Filed:
Nov. 14, 1997
Kenneth M Whaley, Cupertino, CA (US);
Gary Tarolli, Concord, MA (US);
3Dfx Interactive, Incorporated, San Jose, CA (US);
Abstract
A system and method for enabling a graphics processor to operate with a CPU that reorders write instructions without requiring expensive hardware and which does not significantly reduce the performance of the driver operating on the CPU. The invention allows the graphics processor to evaluate the data sent to it by software running on the CPU in its intended and proper order, even if the CPU transmits the data to the graphics processor in an order different from that generated by the software. The invention works regardless of the particular write reordering technique used by the CPU, and is a very low-cost addition to the graphics processor, requiring only a few registers and a small state machine. The invention identifies the number of 'holes' in the reordered write instructions and when the number of holes becomes zero a set of received data is made available for execution by the graphics processor.