AMD-761 Datasheet, PDF (59/264 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
PCI Control
31
30
Bit
Reset
0
0
R/W
23
22
Bit
Reset
0
0
R/W
15
14
Bit
Reset
0
0
R/W
7
6
Bit
Reserved
Reset
0
0
R/W
R
Dev0:F0:0x4C
29
28
27
26
25
24
Reserved
0
0
0
0
0
0
R
21
20
19
18
17
16
Reserved
0
0
0
0
0
0
R
13
12
Reserved
0
0
R
11
10
9
8
Reserved Reserved Reserved
0
0
0
0
R
R
R
5
Reserved
0
4
Reserved
0
R
3
WSC_DIR
(See Note.)
0
R/W
2
1
0
PCI_DT_En PCI_OR_En Func1_En
0
0
0
R/W
R/W
R/W
Register Description
This register controls various functions in the primary PCI and AGP interfaces.
Note: The WSC_DIR configuration bit is implemented only in Revision B4 silicon and above. This bit is reserved and must
be cleared in all previous silicon revisions.
Chapter 2
AMD-761™ System Controller Programmer’s Interface
47