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:
Jan. 13, 2004
Filed:
Oct. 04, 1999
ATI International SRL, Barbados, KN;
Abstract
A method and apparatus for supporting multiple bus masters on an AGP bus is presented. A first bus master is configured as an AGP bus master and utilizes the AGP request portion of the AGP bus structure to issue bus master requests. A second bus master is configured as a PCI bus master and utilizes the PCI bus master request portion of the AGP bus to assert bus master requests. When bus master grants are received via the AGP bus, status lines are used to determine the character of the bus master grant. When the status lines indicate that the bus master grant is an AGP bus master grant, the AGP bus master performs AGP bus master operations. When the status lines indicate that the bus master grant is a PCI bus master grant, the PCI bus master is enabled and allowed to perform PCI bus mastering operations.