That's funny, I did the exact same thing, although I didn't make it as far as you. I had a working mouse cursor (reading the mouse data directly from the seria

That's funny, I did the exact same thing, although I didn't make it as far as you. I had a working mouse cursor (reading the mouse data directly from the serial port) and buttons. At that age, I didn't know about subroutines and had gotos all over the place.