Date: Fri, 16 Apr 93 09:24:11 EDT
From: DJ Delorie <dj AT ctron DOT com>
To: c-spj AT math DOT utah DOT edu
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: using my video card...

If you feel like being ATI-specific, you can program it's linear mode
yourself and access the memory at (0xe00000000 + physical linear
address).  However, the page-handling code in go32 is efficient enough
that the gain for using linear mapping is only a few percent.  It's
better to use the page mapped mode and libgrx drivers, since you are
still portable to any graphics card.

DJ