AMD-761 Datasheet, PDF (247/264 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
Registers
-----
Bits
0x0x0xD0h
31:23
22:16
15:7
6:3
2:1
0
0x0x0xD4h
31:23
22:16
15:7
6:3
2:1
0
0x0x0xD8h
31:23
22:16
15:7
6:3
2:1
0
0x0x0xDCh
31:23
22:16
15:7
6:3
2:1
0
Description
Memory Base Address Register 4
Chip-Select Base 4
Reserved
Chip-Select Mask 4
Reserved
Addr_Mode
Enable/Disable Bank 4
Memory Base Address Register 5
Chip-Select Base 5
Reserved
Chip-Select Mask 5
Reserved
Addr_Mode
Enable/Disable Bank 5
Memory Base Address Register 6
Chip-Select Base 6
Reserved
Chip-Select Mask 6
Reserved
Addr_Mode
Enable/Disable Bank 6
Memory Base Address Register 7
Chip-Select Base 7
Reserved
Chip-Select Mask 7
Reserved
Addr_Mode
Enable/Disable Bank 7
Initialized/
Required
Value
xxh xb
000b 0h
xxh xb
0h
xxb
xb
xxh xb
000b 0h
xxh xb
0h
xxb
xb
xxh xb
000b 0h
xxh xb
0h
xxb
xb
xxh xb
000b 0h
xxh xb
0h
xxb
xb
Actual
Value
Key fcn( )
B
r
B
r
B
B
B
r
B
r
B
B
B
r
B
r
B
B
B
r
B
r
B
B
Notes
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
As 0x0x0xC0h above
KEY:
B= Mandatory BIOS function
A= AGP setup by BIOS
c = Calculated/set by AMD-761™ internal logic
P= Power management setup by BIOS o = Setup by OS or OS driver F = Performance enhancement set by BIOS
r = Hardcoded and reserved
u = PCI operational user interface E = Elective BIOS function
Chapter 7
Recommended BIOS Settings
235