I just acquired a TRS-80 Model II in great condition. One problem: It didn't come with a keyboard.
I'm searching for a keyboard, but the Model II wasn't that popular and I think it'll be tough to find one. In the meantime, I was considering a way to interface a regular PC keyboard to the Model II. I have some documentation for the Model II keyboard pinouts, codes, and timing - please see attached.
One idea was to use a Raspberry Pi. The Pi already has a keyboard attached to it so all I'd have to do is attach a few GPIO pins to the keyboard connector on the Model II and generate the required signals. However, I'm not sure the Pi has the ability to generate signals with such precision.
If anyone has any ideas on how would be a good way to do this, please let me know. Thanks!
- Rick Thornquist