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Mail Archives: djgpp/1994/04/12/10:32:45

Date: Tue, 12 Apr 94 10:11:21 -0400
From: dj AT ctron DOT com (DJ Delorie)
To: babcock AT cfa DOT harvard DOT edu
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: uploads to cygnus - dll, farptr, V2.0 src

> I sort of understand why you can't do graphics very easily, if at all, with
> djgpp and DPMI 0.9, and that a DPMI 1.0 host would solve this problem.  But
> if DJ writes a host, will it help OS/2 and Windows (and NT, Chicago...)
> users?  I suspect the answer is no for any case where DPMI support is part of
> the operating system.  There seems to be a hole here which can only be filled
> by convincing the operating system vendors to upgrade their DPMI support to
> 1.0.

In those cases, you must use the DPMI provided by the OS.  The farptr
module may allow us to do quick graphics in DPMI mode but you'll have
to worry about handling the 64K page flipping yourself if your card
doesn't support a high memory window.


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