> > I just can't find what that way is. My > > naive guess is that it might be that the system BIOS only calls the VGA > > BIOS code for the selected card, and it sets up legacy decode in a > > card-specific way, but I can just find no way to confirm that, and I've > > been googling for quite some time now.
That matches my suspicion too. > Time to disassemble someone's BIOS code and find out? :) > > Note that anyone who does that needs to be careful about how they > contribute to developing a new BIOS, because we don't want to be > accused of stealing code. Bochs and qemu use an open source BIOS and vgabios implementation (the actually have two - one for a "real" cirrus card, and one for a fake emulated VGA device). I've never tried multiple heads inside qemu, so I can't guarantee it'll do the right thing there. It may be a helpful way of poking at a normal startup sequence though. Paul _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
