From: Graham <nospam AT nospam DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Dual Monitor Debugging
Date: Tue, 23 Sep 1997 10:36:51 +1000
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Graham wrote:
> 
> Ok, so I've bought myself a second hand Monochrome monitor
> and Hercules graphics card. There don't seem to be any conflicts
> bewteen the graphics card and my computer. When I set my computer
> to monochrome display (in the BIOS), the monochrome monitor
> is used instead of my normal SVGA one.
> 
> However, when I try to debug in RHIDE under MSDOS 6.22 or
> Windows 95 DOS, the computer resets itself. When I try to debug
> in a Windows 95 dos "box" the process locks up, and I have to
> kill the process manually.
> 
> Now, I'm wondering, has anyone else had these problems with RHIDE ?
> 
> I realise that I should have told you my RHIDE code version number,
> and provided you with the RHIDE system info, but am at work and won't
> be able to post it until I get home (which I will do).
> 
> But first I'll go get myself a newer version of the RHIDE source
> (if there is one), and re-compile.
> 
> [As an after thought]
> I paid only $20 for monitor and card together, and when I get it
> going I envisage it will decrease my debugging time by a fair bit.
> Now _THAT_ is a _GOOD_ investment.

Problem solved, I discovered a switch on EMM386.EXE which was
allocating the memory space B000 onwards to use in shadowing.
As for debugging with Dual Display, Absolutely brilliant! 
Thanks Robert for creating such a cool package.

If anyone is compiling a list of HOW-TO's for RHIDE, under
the Dual Debugging section put it a sentence about checking
that your memory manager isn't stealing the Video Card's 
memory. It will help anyone else who is having the same 
problem a bit of time. (just my 2 cents worth).


Cheers,
Graham.