game controller geeking-out on TI

I spent a good chunk of time this weekend continuing working on the game controller stuff for the TI-99/4A. I built and tested several adapters. I then documented everything on my website here:

http://mrgibson.com/TI/CX30.php

Honestly, the Sega Genesis controller felt and responded the best on the TI-99.

The Atari Video Touch Pad is the least useful device. Because of the build of the internal circuit and how TI-99/4A reads joystick input - As far as I can tell, the best you can do with the device is get 6 of the 12 button to work on the TI-99/4A. Even at that, 3 buttons read at/on joystick 1 and 3 buttons read at/on joystick #2.  And that is only after building an adapter to redirect to different pins.

So for the time being, I'm considering this project done.