[OpenBIOS] Documentation on 0xcfe IO port?
Wallace I. Kroeker
WallaceKroeker at smarttech.com
Wed Feb 16 11:48:20 CET 2000
Hello Ron,
You put up the following code and I am wondering about the CFE port, in
particular where is there some documentation on this.
generic_init: PORT_80 0xd0
; now the fun begins.
; turn on the dram and wait a while (this from the intel book)
mov dx, 0xcf8
mov eax, 0x80000074
out dx, eax
mov dx, 0xcfe
; turn power and and set the nop bit too.
mov al, 0x30
out dx, al
I have the interrupt and port information from Ron Brown and there is a
reference to PORT 0CF8-0CFF as being used for PCI Configuration Mechanism 1.
When I look through all the Intel documentation I only see 0CF8 and 0CFC
referenced. Do you have some more documentation on this?
Thanks
Wallace
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