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What's necessary to run two monitors

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C.S.Suehs-Likes his 386! Could really use VGA!

da leggere,
8 gen 1992, 23:32:0008/01/92
a
The borland TDW mentions being able to use two monitors. I was was wondering
if anybody was doing this. What is necessary?

-steve

Jeffrey Smartt

da leggere,
9 gen 1992, 05:40:3109/01/92
a

>-steve

G'day,

you need a VGA and a monochrome monitor (with separate cards of course) - you
plug both cards and monitors in, and you are away - the software (presumably
your debugger) will do the rest.

Jeff.
--
--------------------------------------------------------------------------------
Jeffrey Smartt, Smartt Designs Pty. Ltd.
G.P.O. Box 619, Sydney, NSW, Australia, 2001.
Ph: +61-18-219955. [(018)219955] Internet: je...@extro.ucc.su.oz.au

Bruce Clement

da leggere,
10 gen 1992, 01:04:4510/01/92
a
In article <jeff.69...@extro.ucc.su.OZ.AU> je...@extro.ucc.su.OZ.AU (Jeffrey Smartt) writes:
>css...@zeus.tamu.edu (C.S.Suehs-Likes his 386! Could really use VGA!) writes:
>
>>The borland TDW mentions being able to use two monitors. I was was wondering
>>if anybody was doing this. What is necessary?

>you need a VGA and a monochrome monitor (with separate cards of course) - you


>plug both cards and monitors in, and you are away - the software (presumably
>your debugger) will do the rest.

* WARNING *

If your VGA card is one of those smart autoswitching-emulate-everything cards
you may be in trouble.

Before installing the mono card you must DISABLE MONOCHROME CAPABILITIES IN
THE VGA. If your VGA has a switch or switches for this, you may be safe. If
it doesn't, abandon the project NOW, and do not resume unless a qualified
serviceperson says it is OK to do so.

The reason for this is that an enabled smart autoswitching VGA will detect
the monochrome addresses being used and switch itself into monochrome mode.
You then have two cards attempting to respond to the same signals. At the
very best, your VGA will simply display an equivalent picture to the mono,
at worst, hardware damage will be done. I know, I fried my Super VGA that
way.

This problem also exists on smart EGAs, and may exist on other standards.

Usual disclaimers apply.

--
Bruce Clement speaking for truth, beauty, and the New Zealand way.
Exception #13 at F0AF:5A1D
Error code: 0000
Do you want to T)erminate the program, R)eboot, or try to C)ontinue

Darren Senn

da leggere,
10 gen 1992, 13:39:2810/01/92
a
In article <8JAN1992...@zeus.tamu.edu> you write:
>The borland TDW mentions being able to use two monitors. I was was wondering
>if anybody was doing this. What is necessary?
>
>-steve

To run with two monitors:
a) You need two video cards: one color, one monochrome. People
usually use a VGA (color) and a Hercules (monochrome).
If you look around enough, you should be able to find
a Hercules adaptor plus monitor for about $50.
b) You need two monitors, compatible with the cards they will
be connected to. (obviously).
c) Plug everything into your motherboard.
d) Somewhere on your motherboard (or in your BIOS configuration)
there is a switch (or setting) that determines whether your
machine boots up on the color adaptor, or on the monochrome
adaptor. Set it to your preference (probably color adaptor,
which is where most motherboards are set by default).
e) Close everything up and boot your machine.
f) Run: tdinst /w
To install TDW. There are some display/swapping options
that you need to set:
Debugging Information: other display
Display Update: Always
Save these options to the executable file or a tdconfig.td
and quit. Do the same thing (but without the "/w") to
setup TD to run with two displays. You can do the same
thing for BC and TPROF.
g) If you have a 16-bit VGA card, the presence of the monochrome
adaptor will force your VGA card to run in 8-bit mode.
This will halve your display update speed. If your VGA
card is based on the Tseng ET4000 VGA chipset, you can
get the programs "tseng16.exe" and "tseng8.exe" that I've
posted to this newsgroup, or mail me for a copy. Running
tseng16 will put your VGA back into 16-bit mode. This will
mess up your monochrome display, but when you aren`t
developing, it's a great benefit. When you need to use your
monochrome card, just run tseng8, and you'll be back to
normal. You can freely run either of these programs any
number of times, and the last one will be prevalent.
h) If you run MS-Windows in 386 Enhanced mode, you'll need to put
DualDisplay: Yes
in your system.ini file (in the [386Enh] section).

Hope this helps.
--
Darren Senn

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