Subj : DOSBOX/2 question.
To   : Mike Luther
From : andrew clarke
Date : Tue Mar 06 2007 02:08 am

Sat 2007-02-24 11:31, Mike Luther (1:117/3001) wrote to All:

 ML> On reading the thread on DOSBOX for OS/2 I have another question
 ML> about it.  I think this echo might be more on-topic for it. 

While I haven't used OS/2 regularly in many years, I do use DOSBox fairly often 
under Windows XP...

 ML> Can this tool provide the equivalent of a DOS-VDM session which can
 ML> be run as a windowed session in OS/2 that also has the ability to
 ML> extend DOS 'regular' memory up into the 600K-700K range by making
 ML> the graphics equivalent to 16 color mode?  When you do this with a
 ML> 'standard' OS/2 DOS-VDM session or set it to monochrome graphics,
 ML> you can extend the basic memory for low memory use up as far as
 ML> even 729K in some systems.

I don't know about OS/2, but you can run DOSBox windowed or full-screen in 
Windows XP.

The default configuration provides around 634K of free conventional memory 
(type 'mem' at the command prompt).  You might be able to get more somehow, but 
I didn't see an obvious way of doing it.

What do you need more conventional memory for?

 ML> And that said, can you get assignable XMS and EMS upper memory
 ML> use as well?

You can enable/disable XMS and EMS from the DOSBox configuration file.  Up to 
64 Mb XMS and 64 Mb EMS.

 ML> Now on a cross platform question here too..

 ML> Since DOSBOX can be run in LINUX or under various incantations of
 ML> WIN-later versions, can you also get the higher memory availability
 ML> and the XMS-EMS memory in those platforms as well?

You should get around 634K free conventional memory using the same version of 
DOSBox on any host platform.

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