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Mail Archives: opendos/1999/12/22/12:22:51

From: "Matthias Paul" <PAUL-MA AT reze-1 DOT rz DOT rwth-aachen DOT de>
Organization: Rechenzentrum RWTH Aachen
To: opendos AT delorie DOT com
Date: Wed, 22 Dec 1999 16:34:22 +0100
Subject: Re: Problems with SciTech Display Doctor
X-mailer: Pegasus Mail v3.22
Message-ID: <6C3F350329A@reze-1.rz.rwth-aachen.de>
Reply-To: opendos AT delorie DOT com

On Tue, 21 Dec 1999 Dave Dribin wrote:

> Has anyone got SciTech Display Doctory working on DR-DOS?  

Sorry, I don't know this software. But in general, if you're getting
memory errors there's a multitude of possible reasons and since 
DR-DOS provides much more features than MS-DOS how to optimize the 
memory configuration, it might be more difficult, if you're new to 
the configuration switches provided by the DR-DOS memory managers.

A good thing to start with is to disable EMM386's support for
DPMI and multitasking: /DPMI=off /MULTI=off. You can also try
to exclude a larger region of upper memory from usage as UMB.
Also try to disable usage of the video memory address space
/VIDEO=off. Depending on your AddOn adapters moving the EMS-page 
frame (if you are using EMS) may help too. 
If any of this helps, it does not mean, you would have to permanently 
disable these features, but it's good to isolate the cause for
the problem.

Try HIMEM.SYS instead of EMM386. If you have access to it, it
cannot harm to try MS-DOS HIMEM+EMM386 for troubleshooting (but 
many of the switches are different). Try to change the load-high
order of resident drivers, try to subsequently not load high 
TSRs, and eventually remove them. 

Knowing the results of these tests, we might be able to find a
working configuration, that is still feature-rich and optimized.

Matthias

PS: I think it's time to wish all the remaining DR-DOS fans 
    a Merry Christmas, peaceful holidays and good luck for 
    the year 2000 and beyond. 
    My personal hope regarding this list is, that the next year 
    will bring some new action into DR-DOS' life - even on the 
    desktop. We don't need to worry for Linux, this steam hammer 
    is unstoppable now. 
    I speak only for myself, but I think, opening (some of) the 
    DR-DOS sources to the public could cause a prosperous 
    technology exchange between Linux and DR-DOS (and FreeDOS), 
    whereby all could only profit - DOS isn't that old fashioned, 
    as some people think. Multi-millions of people use it every 
    day without knowing it...
    There's a proverb in Germany: "Alle kochen nur mit Wasser." 
    [Everyone uses water for cooking.] I for myself have 
    (almost) ready many system extensions for (DR-)DOS, which 
    I would like to polish for publishing once DR-DOS would 
    have become really open...

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Matthias Paul, Ubierstrasse 28, D-50321 Bruehl, Germany
eMail: <Matthias DOT Paul AT post DOT rwth-aachen DOT de>
Web  : http://www.rhrz.uni-bonn.de/~uzs180/mpdokeng.html
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