Here it is. I tied into my father’s computer on the modem, and filled out some details on your drawing. It’s mostly guesswork.

This is our circuit board, which calls for a terminal so I used my computer. It’s only a 128K but it should be enough to find out what it does if it does anything at all which it probably doesn’t. It’ll probably burn out or something.

Oh well this sort of stuff usually takes years and years to develop and work out the bugs…

(one minute later it has drilled a hole in a bookshelf in the basement and in all the books))