On Wed, 2 Sep 1998, Shawn Rutledge wrote:
Anyway, the
machine has a special card in it for driving the LCD panel.
It is labeled "LCD & HGC CARD". What is "HGC"? It has an
external 9-pin
Probably "Hercules Graphics Card" - Hercules made the original
mono graphics card that was cloned a lot and most cards for driving
mono monitors are that variety. It gives you 720 x 4?? dots
with each pixel being on or off. As well as being compatible
with the original IBM PC mono video card (which had only text mode).
It does use a 9-pin connector.
OK, thanks, that's probably it. The fact that it didn't work with my
monochrome monitor may not mean much, either, as there is an external
toggle switch on the display card as well as four externally-accessible
dip switches. I did try the monitor with both toggle positions, but I
didn't play with the dip switches.
port on it and
I tried plugging the monochrome display into it, but the
picture was all distorted so I figured it was using a different frequency
or something. The cursor comes out about an inch wide, and none of the
craracters are recognizable, possibly just from overwritten numerous times
in the same scanline.
Hmmm are you sure the monitor is OK?
Yes, it works fine with two other machines and three monochrome cards that
I've tried.
Oh, and BTW, I
electrocuted myself last night when I touched some exposed
wiring going to the LCD panel. It surprised me that there was that much
Is it backlit? Fluorescent backlights use relatively high voltage.
Yes, it's backlit. I think that's why it looks like the characters are
floating. :)
--
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Thanks.
Doug Spence
ds_spenc(a)alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/