>Date: Tue, 10 Nov 1998 00:29:33 +0000 (GMT)
How does a light pen work?
>
>>
>> Not to change the subject but has anybody ever seen the light pen
for
>> the PCJr? I've read in the PCJr literature that it was supposed to
be
>> available but haven't known of anybody having seen or used one.
>
>Well, there's a light pen port on the back, but I have no other real
info on
>it. I could find out the pinout if anyone wants to try building one.
>
>Mind you, there's a light pen connector on the original CGA card. And a
>similar one on the MDA card with the right signals. The latter,
however,
>is known not to work with the 5151 monitor as said CRT has too long a
>persistance.
>
>Again I can find pinouts/signal details.
>
>I seem to recall there being a circuit for a Tandy 1000 lightpen in
>80-micro in about 1986. I suspect that would work with all the above
systems.
>
>-tony
>
>
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Received on Mon Nov 09 1998 - 20:53:41 GMT