From: Graham <nospam AT nospam DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Dual Monitor Debugging
Date: Wed, 24 Sep 1997 11:00:20 +1000
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Robert Hoehne wrote:
> 
> Graham wrote:
> >
> > 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.
> How (and WHY) you did this?

I actually did it to test if I could get a display out of the 
secondary display adaptor (the Hercules card). I did it by
going into the BIOS and selecting "Display Type: Mono".
My BIOS gives me a choice of "EGA/VGA","Mono","CGA".

I have a fairly new IBM 6x86 P200+ processor, and am pretty
sure have the latest version of the American Megatrends BIOS.
 
> > 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.
> Does this mean that you are working on the secondary screen
> before starting RHIDE? (if yest, please do not so).

No, I can't start Windows 95 using the Mono Monitor.
It doesn't support hercules graphics anymore.
 
> > Now, I'm wondering, has anyone else had these problems with RHIDE ?
> I had never problems with it.
> 
> One thing which I can imagine is, that you have epxlicitely included
> the B000-B7FF memory range in the emm386 line in your config.sys
> file.

Spot on, that was the exact problem. 
 
> Or an other problem might be, that your card is not full register
> compatible to an MDA card (I'm writing in RHIDE directly to the
> ports of the card).

Thanks for your help Robert, I'd already followed up to my post with
what I'd done wrong. I also suggested that it might be a good idea
to put a short passage in the RHIDE help, under the section "Dual
Monitor Debugging", about that EMM386 error.



Cheers,
Graham.