On 8/9/07, Paul Brook <[EMAIL PROTECTED]> wrote: > > I don't know the exact details, but I'm fairly sure the system bios handles > this. ie. it only initializes the VGA bios for one card. Other devices are > just setup as regular PCI devices, and it's up to the OS to "boot" secondary > VGA devices. Many BIOS have a setting that lets you choose whether to prefer > AGP or PCI VGA cards.
That sounds right. > > My guess is that there's a bit in the in the option ROM header that says "I'm > a VGA card". Either that or it just goes off the PCI class. Yeah, those are the base class, subclass, and interface he was talking about. I think these numbers are readable from PCI config space. -- Timothy Normand Miller http://www.cse.ohio-state.edu/~millerti Open Graphics Project _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
