Light Pen Plans By Lance F. Squire February 26, 2010 I just hooked an Atari/Commodore light pen to my Bally. I could make a proper adapter if I can find the end used on the whiteRAM connecting to the 300baud adapter... I originally got this lightpen because someone mentioned that they found a port setting that seemed to change how the pen position was reported. Long time ago. Right now, besides finding that discussion again, I'm looking for how to use the pen in BASIC. Currently, I'm reading &(14) and &(15). Some of the values ,mostly &(15), are all over the place. In case anyone was wondering the wiring is: Atari Bally 6---------2 7---------3 8---------1 Lance