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Mail Archives: opendos/1997/02/10/20:42:03

Message-Id: <199702110125.CAA28906@math.amu.edu.pl>
Comments: Authenticated sender is <grendel AT ananke DOT amu DOT edu DOT pl>
From: "Mark Habersack" <grendel AT ananke DOT amu DOT edu DOT pl>
Organization: What? (Poznan, Poland)
To: mharris AT blackwidow DOT saultc DOT on DOT ca
Date: Tue, 11 Feb 1997 02:23:51 +0100
MIME-Version: 1.0
Subject: RE: [opendos] First impressions, Win95+GRUB (fwd)
Reply-to: grendel AT ananke DOT amu DOT edu DOT pl
CC: Gene Buckle <geneb AT web DOT wa DOT net>,
OpenDOS Mailing List <opendos AT mail DOT tacoma DOT net>
References: <199702070033 DOT BAA13726 AT math DOT amu DOT edu DOT pl>
In-reply-to: <Pine.LNX.3.95.970210081416.285k-100000@capslock.com>
Sender: owner-opendos AT mail DOT tacoma DOT net

Once upon a time (on 10 Feb 97 at 8:15) mharris AT blackwidow DOT saultc DOT on. said:

> On Fri, 7 Feb 1997, Mark Habersack wrote:
> 
> > It's possible thanks to DPMS. The specification allows device drivers to
> > run from within the XMS memory without leaving PM at any time. I think it
> > should be the future of OpenDOS drivers.
> 
> So, basically we cant load anything > 1M *YET*? I was under the
> assumption (based on other peoples comments) that we could load
> anything above 1M.
No, AFAIK it's not possible with *all* the drivers. The driver in question 
has to support DPMS API and ask to be loaded to >1M. Also it has to take some 
provisions as to running in PM, which is very hard with the standard DOS SYS 
driver format (actually with DOS' way of linking drivers in memory chain) - 
unless DOS natively knows about such a possibility (I don't know the DPMS 
specification well enough to tell whether DPMS takes this task upon itself 
and isolates DOS kernel from the knowledge about >1M world)

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