AMD-761 Datasheet, PDF (151/264 Pages) Advanced Micro Devices – AMD-761-TM System Controller Software/BIOS Design Guide

24081D—February 2002
Preliminary Information
AMD-761™ System Controller Software/BIOS Design Guide
GART Table
Physical
Memory
1K Table Entries
1K Table Entries
AMD-761™ System Controller
Northbridge
Table Cache
16 Entries
Fully Associative
GART Directory
Directory Entry 2
Directory Entry 1
Figure 4. Two-Level GART Indexing
GART Base Address
register points here
(Dev0:BAR1: 0x04).
Directory Cache
8 Entries
Fully Associative
Chapter 2
AMD-761™ System Controller Programmer’s Interface
139