Hi Niels,
On Sat, Aug 14, 2010 at 01:38:26AM +0800, Qing Pei Wang wrote:
In my eyes, you can flash the M_BIOS with coreboot. It should not need any hardware modification. Although i did some of them, but they are just used to let me find out the problems of dual bios things
Qing Pei is right, no hardware modification necessary. I started a page on the MA785GMT-UD2H that explains how to recover from an unbootable M_BIOS, by using the B_BIOS feature. It boils down to shorting pins 4 (GND) and 7 (#HOLD) on the M_BIOS chip for a few seconds on cold boot, and then releasing the short.
See
http://www.coreboot.org/GIGABYTE_GA-MA785GMT-UD2H
Thanks, Ward.