Disassembling BIOS to figure out a PCI error?
- From: "jonfaquit" <spamtrap@xxxxxxxxxx>
- Date: 31 Mar 2006 09:15:52 -0800
I have a normal pc desktop machine with a msi k8t neo-v motherboard
which utilizes an AMI BIOS. I have a pci video card in an expansion
slot. On bootup POST, the BIOS complains about a routing table error on
device 0:05:00 which pionts to my video card (the only PCI device in an
expansion slot). This motherboard does not have onboard video so I need
this video card in order to see anything (as I do not have any
backups). This video card works flawlessly in another machine
(different mobo/chipset/bios). I have done some searching and it seems
I need to look for a "pnp os" setting in my BIOS; none exists (or the
the mobo manufacturer has conveniently removed the ability to alter
this setting as a lot of them do to a stock BIOS).
So I've come to the point where I want to disassembly/debug my BIOS to
see what the exact error is. I can use dos debug to find the location
of the '$PIR' signature of the routing table and maybe will only have
to analyze the data and this will show what the inconsistency/error is.
Otherwise I need to do some really-involved disassembly/debugging.
The video card still works, however very slowly. It's like it's
"painting" row by row....very obvious to the human eye. CPU utilization
runs up to 90% for a simple act like scrolling a ms-windows notepad
window (and takes a couple of seconds). The card itself is a 5volt PCI
ATI Rage Mobility card (mobo supports 3.3 & 5 and AGP up to 3.0).
I've reset CMOS, removed/reinstalled battery, disconnect power chord
from psu, disconnect all connections to the mobo including the atx PSU
connector, reseated the video card in all slots, removed/reinstalled
the cpu (which isan AMD Athlon 64 @ 2.0Ghz, 200MHz HTT x4 = 800MHz
FSB), tried different memory (current is 512MB ddr400 [200Mhz bus], and
even booted up with only memory, cpu, psu, and video card hooked up and
still same error.
Any tips/pointers?
.
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