24 Dec
2012
24 Dec
'12
8:39 p.m.
On 12/24/2012 05:18 PM, Hendrik van de Werken wrote:
The AT&T 6300 can be operated with a monochrome
monitor like a 5151
or a Hercules monitor. You have to install an MDA-card on the system
bus and connect it to the mono monitor. Maybe that is the way the
5151 of Chris Tofu works with the 6300. If you want to operate only
with mda you have to set a dipswitch on the motherboard so it starts
up in mono mode and not in "color mode" of the Indigenous Board. I
used both monitors at the same time with software I wrote and --for
example-- the Microsoft Quick C compiler, which has the standard
output through the Indigenous card and the compiler messages on the
mono monitor.
I did mention using an MDA card, but wasn't sure about BIOS support for
the MDA. At any rate, you've verified that a 5151 won't work with the
"native" display adapter. It's interesting that you managed to install
an MDA with the "built in" adapter; maybe there's still some life in my
old Herc Plus card.
Does the two-monitor setup work for all revisions of the BIOS? Does it
work if you have the EDA card also installed?
All the best,
Chuck