🚀 go-pugleaf

akcs.amparsonjr@vpnet.UUCP (Anthony M. Parson, Jr.) writes:

>Speaking of running mono with color, I also have a question:
>In running mono + ega/vga, will  hercules-type board work?  I had assumed
>(haven't tried this yet, but I want to use 2 monitors with Codeview)
>that only a MDA (Ibm mono without ability to display graphics) was the
>required mono card.  Can the graphics part of Hercules-graphics cards be
>turned off???

I am happily running a Hercules card with a VGA card. There are 3 possible
configurations for real Hercules cards an most clones.
1. DIAG (looks like an MDA to the system)
2. HALF (only use memory from B000-B7FF)
3. FULL (use all memory on card, B000-BFFF)

Hercules cards come with a utility (HGC.COM) for setting these modes. Most
clone cards do too. Half mode is compatible with EGA/VGA as when they detect
a mono board, they don't use the B000-B7FF area anyway. So this means you
can use the first of the two graphics screens available on the Hercules card.

If you have a VGA that will let you disable it through software, you can
use both screens. My VGA board does (probably because it was made by
Hercules :-).

So I have a pair of batch files:
MONO.BAT
mode mono
vgaset off
hgc full

CO80.BAT
hgc half
vgaset on
mode co80
-- 
Leonard Erickson		...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I'm all in favor of keeping dangerous weapons out of the hands of fools.
Let's start with typewriters." -- Solomon Short