[coreboot] ASRock E350M1 video option ROM?
Andrew Goodbody
ajg4tadpole at gmail.com
Mon Mar 12 12:35:00 CET 2012
On 11/03/12 05:04, Scott Duplichan wrote:
> I know of two ways to extract the legacy video option rom:
>
> a) Download the image from the manufacture's web site:
> 1. ftp://174.142.97.10/bios/CPU/E350M1(1.50)ROM.zip
> 2. Extract the 4MB UEFI image (E350M11.50)
> 3. Use 7-zip (version 9.21 beta) to decompress.
> 4. Hex edit this file: E350M1(1.50)ROM\2\CSMCORE\1.raw
> 5. Find the start of the video option rom. It starts with
> 55 AA and contains text "AMD Fusion Wrestler generic VBIOS"
> 6. The length is the byte after 55 AA (71) * 200h = E200h.
> 7. Extract E200 bytes starting at 55 AA.
>
> b) When the board arrives...
> 1) Boot MSDOS and start DOS debug
> 2) At the - prompt, enter these commands:
> -n vga.bin
> -rbx
> -1
> -w
> 3) The option rom is vga.bin in the current directory.
>
> Thanks,
> Scott
a) is good.
b) is just going to get you 64KB of unintialised data. There is nothing
in those instructions to access the video BIOS AFAICT.
Andrew
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