Specifications

© 2008 Advanced Micro Devices Inc.
A-Link Bridge
AMD SB600 BIOS Developer’s Guide (Public Version) Proprietary
Page 43
mov eax, 0C0000090h ; Bits[31:30] = 11 for A-Link Bridge register
; space
out dx,eax ; Register index is set
mov dx,0c84h ; I/O address for data
mov eax,00000001h ; Power down 2 lanes to save power
out dx,eax
Read:
Use a similar indirect procedure to read out the register value inside AB and BIF.