Testbios help with nvidia 6800Gt and simple how to

Dave Aubin daubin at actuality-systems.com
Tue Oct 5 11:51:01 CEST 2004

Found the answer.

It seems my dd returned an unusable binary.  I found a good binary for
The nvidia card from here:

Seems they use a windows tool to retrieve the rom.  Perhaps with this
Card being so new this was the problem I was having.  In any even
My GeForce 6800GT now works under Linux bios:)

Hope this helps someone.

-----Original Message-----
From: linuxbios-admin at clustermatic.org
[mailto:linuxbios-admin at clustermatic.org] On Behalf Of Dave Aubin
Sent: Tuesday, October 05, 2004 10:01 AM
To: linuxbios at clustermatic.org
Subject: Testbios help with nvidia 6800Gt and simple how to

  I'm trying to get an nvidia 6800 Gt video card to work with linuxbios,
but I am coming up short.  Below is a mini how to with test bios and I
did follow the steps, but it still doesn't work.  Can someone please
help me?  
  I did the exact same steps with an nvidia5950 and it worked great.  
Is there something I am missing?
Simple Test Bios How to.
Purpose:  Testbios provides an i386 emulator for programming the video
How to:  First you need to retrieve the video bios from a machine booted
up with a commercial bios running linux.  Then once that is done you can
execute the bios by using testbios.  
How to retrieve video bios
1.  Boot up machine with commercial bios in to a linux environment 2.
dd if=/dev/mem of=vgabios.bin skip=1536 count=128 from a terminal window
    A.  This copies the video bios out of /dev/mem and places it in
How to execute testbios
1.  Boot up machine with Linuxbios in to a linux environment 2.  run
testbios --abseg /dev/mem -s 65536 /root/vgabios.bin
    A.  If working you should see the video bios welcome message on the
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