Something I have used to figure out older (ISA) motherboard/video problems:
I used an old MDA (Monochrome Display Adaptor) video card and monitor.
Using DOS, and the MODE MONO command got the MDA monitor working.  Using
the MODE CO80 (cee-oh-eight-zero) with BOTH cards plugged in allowed me to
switch to a VGA monitor.

This allowed me to see what I was doing using the MDA monitor and then
switch to the VGA monitor to see the results.  I could try different
drivers, etc.; and if something didn't work, I could switch back to MDA
and try again.

I understand that there is a potential for damaging a monitor by setting too
high a horizontal frequency for a particular monitor, but with a little care
(and perhaps a little luck :-), it worked for me.

Does anyone know if this could be adapted to the Gateway and monitor in
question?

Boyd Ramsay

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