Date: Wed, 9 Feb 94 21:41:25 EST
From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock)
To: davis AT amy DOT tch DOT HARVARD DOT EDU
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: ATI Wonder Card
Reply-To: babcock AT cfa DOT harvard DOT edu

> The drivers that come with the program includes one called ativga.gfx which
> support ATI 18??? chipsets.  Is the ATI Wondercard of this type?  If not,
> does anyone have a driver for it?

The ATI VGA Wonder used the 18800 chipset.  But, based on my experience,
there are different ATI cards, possibly using the same chipset, which require
different code for bank switching.  The symptom of using the wrong bank
switching code is that, as the screen is being updated, you'll get a horrible
out-of-sync glitch in screen modes larger than about 640x480(x16 color?).
It's often bad enough to shut down my multi-sync monitor.  I've just received
the 32-bit version of GLE (a graphics package) which uses djgpp, so I may
soon face the same problem.  If so, I'll try to create a fixed driver file.
But there are more important things on the queue first.  If you'd like, I can
send you an example of working bank-switching code from QPEG (a JPG display
program).