Date: Thu, 10 Feb 94 15:41:30 EST
From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Cc: babcock AT cfa DOT harvard DOT edu
Subject: Re: Help with gcc and EISA cards
Reply-To: babcock AT cfa DOT harvard DOT edu

> > Could he run in VCPI mode and make a custom GO32 to map the frame grabber
> > memory somewhere, just as the first megabyte gets mapped to e0000000?
> He could, but it would require a custom go32, and V2.0 will only
> support DPMI anyway.

Would the mythical DPMI 1.0 allow mapping this physical segment so that it
could be accessed without using "far" pointers?  The question of how to
access special devices out beyond 1MB will keep coming up, and for things
like image processing, the overhead of copying to ordinary memory can hurt
performance.