[coreboot] How to change the device id of a VBIOS

Peter Stuge peter at stuge.se
Fri Jun 25 09:06:23 CEST 2010

Bao, Zheng wrote:
> I am wondering, if I got a Vgabios for graphics card A, can I just
> change the device ID in the binary file to fit the graphics B?

If the code is the same, sure.

> Is there any checksum in the vgabios.bin?

Yes. Option ROMs follow a well defined standard.

> Is there a tool to handle it?

Try tools/buildrom.py in the SeaBIOS repository at



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