Re: S3 High Speed text font support in vgacon.c [patch 2.1.112]

Geert Uytterhoeven (
Fri, 31 Jul 1998 13:02:48 +0200 (CEST)

On Fri, 31 Jul 1998, Jan Kratochvil wrote:
> On Fri, Jul 31, 1998 at 10:37:23AM +0000, Yaroslav Rosomakho wrote:
> > Look, if you nkow S3 cards, couldn't you write video frame buffer for S3?
> Please see "/usr/src/linux/drivers/video/S3triofb.c". This is probably
> what you want but unfortunately its not meant for i386 platform but for
> PowerPC one where the PowerPC init system (like i386 BIOS) initializes the
> graphical mode for you.

Yes indeed. The Trio is initialized by Open Firmware in some machines. It isn't
in mine :-(

> After writing the video-mode init code to it it should be usable even
> on i386 platform. There may be only some problems with different RAMDACs
> and ClockChips. I plan to eventually look into this later in summer but
> unfortunately it would require some code-share with XFree in kernel which

The Trio video mode initialization code is also required if you want other
video modes than the 640x480x8 from OF, or if your version of OF doesn't
support Trio. And then it can be shared with ia32...

> is like duplicating GGI work. And Linus said that he wouldn't like such
> code in kernel anyway.

On some platforms, we need it anyway, thus...



Geert Uytterhoeven           
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium

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