Re: Announce (and questions): Linux 2.2 VGA 640x480x16 framebuffer

Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
Tue, 26 Jan 1999 10:05:57 +0100 (CET)

On Tue, 26 Jan 1999, Ben Pfaff wrote:
> For use mainly by graphical installation disks, I have written a
> `least common denominator' 640x480x16 framebuffer for VGA and
> compatible cards. It is essentially complete. You can find it at
> http://pfaffben.user.msu.edu/~blp
> and http://www.msu.edu/user/pfaffben
>
> To use it, patch a 2.2.0 kernel pre-patch with vga16.patch, then
> select `VGA 16-color graphics console' and `VGA 16-color planar
> support' in configuration. When you reboot, you must specify vga=274
> (which is 0x112 in hex) to kick your card into the proper video mode
> for use by VGA16 (I have not implemented mode-setting yet).

Nice!

> + vga16fb_defined.pixclock = 10000000 / 640 * 1000 / 480;
> + vga16fb_defined.left_margin = (640 / 8) & 0xf8;
> + vga16fb_defined.right_margin = 32;
> + vga16fb_defined.upper_margin = 16;
> + vga16fb_defined.lower_margin = 4;

Here you could fill in the timings for the standard VGA 640x480 mode.

And now we're waiting for 320x200 in 256 colors :-)

Greetings,

Geert

--
Geert Uytterhoeven                     Geert.Uytterhoeven@cs.kuleuven.ac.be
Wavelets, Linux/{m68k~Amiga,PPC~CHRP}  http://www.cs.kuleuven.ac.be/~geert/
Department of Computer Science -- Katholieke Universiteit Leuven -- Belgium




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