Talk:Light pen

I have a Turbo Computer Lightpen and the button is actually connected to pin 3 of the control port, that is LEFT, not UP (pin 1) as in the example ciruit diagram.

It seems that this was the standard way to do it because the GEOS driver also tests for bit 2 in the Light Pen input driver as seen in the code: https://github.com/ytmytm/c64-GEOS2000/blob/master/src/input/lightpen.tas#L74

ytm/elysium