Fraser Farrell wrote:
> I'm intrigued by the possibilities of having a
> dual-monitor 386 system; specifically, a Hercules
> monochrome for text and a VGA for graphics, for use by
> Turbo Pascal, Turbo C, etc.
>
> I have the video cards and monitors. But how do I put
> everything together in a peaceful coexistence?
Hi Fraser,
I do that on one of my computers. The implementation has
been pretty simple. You can plug both a VGA and a Herc
into the same board without any problems. The Herc uses
the first bit of memory and the VGA continues after that,
so there is no conflict. Just remember to not re-allocate
the mono region.
The way I used to do it was by simply making up a couple
of batch files which basically was just a quick way to
type "mode mono" and "mode co80" to switch between them.
This will allow you to, for example, put up a page of
stuff on the monochrome screen which you wish to refer to
while working on the VGA. You can try this by typing the
two commands and playing around to discover the
possibilities for yoursefl.
Now I am using a little utility which does this. The
only reason for using this utility is that it also allows
me to save up to seven screens, which is very useful. This
is done by hitting F11 to save (go forward) and F12 to
recall (go backwards). This way you can cycle through the
saved screens. Switching between monitors is done with
Ctrl-F11 and Ctrl-F12. This utility is a TSR which takes
up 1k of RAM.
It is called "MON" and you can find it, along with other
utilities in the same vein, on simtelnet at:
simtelnet/msdos/screen/mon17.zip
If you want a copy and can't find it, I will send it to you.
You probably want something fancier for degugging etc, and
I know there are more sophisticated ways to employ dual
monitors but this is my (typically) simplistic way of
dealing with it.
Cheers,
Ole Juul
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