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. :)
> --
> _______ KB7PWD _at_ KC7Y.AZ.US.NOAM ecloud_at_goodnet.com
> (_ | |_) Shawn T. Rutledge on the web: http://www.goodnet.com/~ecloud
> __) | | \__________________________________________________________________
> * X window * virtual reality * knowledge base * ham radio * electronics *
Thanks.
Doug Spence
ds_spenc_at_alcor.concordia.ca
http://alcor.concordia.ca/~ds_spenc/
Received on Thu Sep 03 1998 - 04:17:45 BST