In my storage room I came across several boxes my parents had kept of my childhood scribblings and musings. I am in the process of going through all of these boxes, making an inventory for the family library, and scanning for posterity.
Back in the 80s I decided the TI needed a different kind of controller. The idea was to take a similar form-factor of the oft-maligned TI controller and build in a keypad like the Atari 5200's. This was to provide numbers (for games like Parsec) and frequently-used FCTN keys in the hands of the user. There were two designs originally: one which was identical to the orientation of the TI controller, and this one which was more like the Atari 5200 controller.
Being 10 or 12 at the time I designed this layout and not knowing anyone or any way to produce these, this design sheet is all that remains of the idea. Thanks goes to my parents for saving my scraps and scribblings.