15 Jul
2001
15 Jul
'01
8:07 p.m.
Fred,
Where was I during VCF? Probably tiling my bathroom. I'm relatively
new to the list, so I haven't done any VCFs yet. The one in two
weeks is too far away - I'm in Minnesota.
Tony always elaborates. :-) That's a good thing.
Tony:
I hadn't realized that on a PC w/ CGA that the light pen was getting
help from the CRT controller. That explains how a relatively simple
device can report positioning information - it doesn't, the video
card is doing it.
So here's a trick question .. what happens when a person holds
a lightpen to a dark section of the screen. Is the lightpen
completely blind unless come pixel is lit up?
Thanks,
Mike