Re: Cant' switch to VESA VGA (I wanna see the grafik logo!)

Martin Mares (mj@albireo.ucw.cz)
Mon, 20 Jul 1998 00:10:40 +0200

> Well, I have 2 VESA Text modes in the list if tell the kernel "vga=ask"
> and the kernel tells me that i have a vesa card in the headline of
> "vga=ask" (but i don't know if this means that it is a VESA 2.0 card
> which supports a linear frame buffer). The code after the "check_vesa"
> mark in linux/arch/i386/boot/video.S just returns if the mode is ok or
> not - what's about a more verbose message? ("badmdt" does not tell
> anything except that it does not work. :-)
>
> But I guess that the S3 Virge card is VESA 2 compatible (it's not a very
> old card). I can't find any manuals - so I'm not absolute sure about this.
> How can I find out if I can use my card or not?

I think S3 Virge BIOS supports only VESA 1.2 :-(

> PS: Why is all this stuff written in pure assembler?
> It's so hard to read. :-)

All this stuff must be run in 16-bit real mode before we start the kernel
and GCC doesn't know how to generate 16-bit code.

Have a nice fortnight

-- 
Martin `MJ' Mares   <mj@ucw.cz>   http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
"A LISP programmer knows value of everything, but cost of nothing."


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