@mitu @RapidEdwin08 I had tried to use the A key I had selected above but it didn't work. I finally got it set up but I don't know what if anything I did differently.
I think I got both the keyboard and controller working and moved on to getting the Atari 5200 games to work. That's also a lot move involved than I would have thought but I'm working my way through the documentation.
Thanks for the help! I really appreciate it.