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:
Feb. 25, 2003
Filed:
Nov. 10, 1999
Paul Campbell, Oakland, CA (US);
Ali Alasti, Los Altos, CA (US);
ATI International SRL, Barbados, KN;
Abstract
A method and apparatus is provided for providing communication with input/output devices without being bound by the limitations of an existing input/output bus while still providing compatibility with software intended to communicate with input/output devices using the existing input/output bus. The software image of the input/output devices as being associated with the input/output bus is preserved, but a technique is provided to allow communication with the input/output devices to bypass the existing input/output bus. A translation lookaside buffer is utilized to remap accesses to an internal input/output device from virtual address space for input/output-bus-based input/output devices to physical address space for the internal input/output device. Circuitry for interfacing with the input/output devices separately from the existing input/output bus may be fabricated as a single integrated circuit device along with other system components, such as a central processing unit.