Date: Tue, 6 Oct 92 09:03:00 EDT
From: DJ Delorie <dj AT ctron DOT ctron DOT com>
To: kuku AT acds DOT physik DOT rwth-aachen DOT de
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: switching modes

The VGA hardware uses the same VRAM to store graphics as it does to
store text fonts and layout info.  Changing modes causes some
information from the previous mode to be lost.

If you're clever, you could probably get away with saving the text
screen and a small part of the graphics screen - not all of it will
get destroyed.

DJ
dj AT ctron DOT com
Life is a banana.