On Wed, Jul 10, 2002 at 12:56:44PM +0100, David Laight wrote:
> On Wed, Jul 10, 2002 at 08:45:02PM +0900, Bang Jun-Young wrote:
> > On Wed, Jul 10, 2002 at 07:55:18PM +0900, itojun@iijlab.net wrote:
> > > >AFAIK, most graphics cards manufactured so far need such timing
> > > >information for mode switch. It's not chip dependant. If it were,
> > > >for what does XFree86 provide common mode lines in XF86Config file? 
> > > 
> > > 	i'm no expert in various VGA cards these days, but isn't it better
> > > 	to let BIOS handle it?  i.e. call VGA BIOS for initialization and
> > > 	let it initialize the parameter, instead of cooking up parameters.
> > > 	kvm86.c looks promising for this...(assuming VGA BIOS gives you
> > > 	enough functionality)
> > 
> > It would make sense with i386, but not with others. There's no
> > known/easy/MI method to set screen to 1280x1024 at 75 Hz on sparc64,
> > for example. Even on i386, VESA BIOS provides limited number of video
> > modes, so display drivers have to know how to do mode switching. 
> 
> Maybe the BIOS calls could be used to get text mode for ddb?

Maybe Matthias Drochner's recent work could help do that.

Jun-Young

-- 
Bang Jun-Young <junyoung@mogua.com>