Re: Testbios works for ATI too !!!

[Li-Ta Lo]

On Thu, 2004-05-27 at 15:21, Richard Smith wrote:
> ron minnich wrote:
> > On Thu, 27 May 2004, Richard Smith wrote:
> > > I don't suppose there is a way to use testbios with a system having 2 
> > > video cards is there?
> >
> > the spec says that you can call a card bios with a devfn and it should all 
> > work. Not all cards work however as their bios is brain-dead.
>
> The bios also has to know if it should enable decode of the legacy vga 
> IO registers.  How would you tell it that?

There is a terrible way to do that. There is some INT 10 call which
can disable the legacy vga decode for the "current" vga device.

Ollie