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:
Nov. 29, 2005
Filed:
Jun. 09, 2003
Nagasubramanian Gurumoorthy, Hillsboro, OR (US);
Shivaprasad Sadashivaiah, Portland, OR (US);
Nagasubramanian Gurumoorthy, Hillsboro, OR (US);
Shivaprasad Sadashivaiah, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A data processing system includes at least one system processor, chipset core logic, main memory to store computer software and data including operating system software, and a graphics address remapping table (GART). The chipset logic operates on first-sized real memory pages, while the operating system operates on larger, second-sized virtual memory pages. In an embodiment GART driver software maps each virtual page to Z continuous or non-contiguous real pages by filling up the GART with Z entries per virtual page, where Z is the rounded integer number of first-sized pages per second-sized page. In another embodiment, an address translation function converts a target address, corresponding to an address within a virtual page, issuing from a processor into a second address, corresponding to a base address of a real page in main memory. Also described are an integrated circuit and a computer-readable medium to map memory pages of disparate sizes.