To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Boca SVGAX2 with Cirrus CL-GD542X?
Date: Thu, 02 Jun 94 08:33:05 CDT
From: sasbnb AT unx DOT sas DOT com


Howdy Gang,

I have been eavesdropping to this list for a few weeks now, and this is
the first time I have had a (hopefully) intelligent question to ask.

Actually, I have 2. I have been working with weird alterations on the
standard Mandelbrot calculations, and have stumbled upon a way to
generate 3 numbers from the iteration loop. I have attempted to view
each color separately in standard VGA mode, and was surprised to see how
chunky the images were. Checking the ~GrMaxx() and ~GrMaxy(), I see that
I am in 320*200 mode so I am only seeing 1/4 of my images. I have tried
every mode listed in the graphics header, and can't get beyond 320*200.
I am using the vga.grd driver, and wonder if one of the other drivers
might work. I have heard stories about internal circuitry melting if one
enters the wrong mode or uses the wrong driver. I did try the tseng4k,
but it just ruined my colors forcing a reboot. Is there an off the shelf
driver for my card that will take me to 640 or even 1024 res?

Secondly, I have the Boca SVGAX2 with Cirrus CL-GD542X, and the
manufacturer claims that it will do true color at 640*480 res by
bypassing the VGA color selector and writing 3 bytes directly to video
memory. Has anyone actually done this?  Does anyone know where I can get
a true color driver?  If not, can anyone point me in the direction of
some sample source code (Hopefully C, I hate assembler) to help me write
one?

By the way, I just thought of a third. I have a monster ram disk, and I
would like to put the compiler, linker, libraries, etc there. Is anyone
familiar enough with the gcc system setup to tell me exactly which files
I would have to copy and which paths/environmental variables I would
have to alter to avoid using my hard drive at all?

Thanks 1E6,

        Brian P. Barnes, Mad Scientist.
        Taking over the World from Austin, Texas.