With my keyboard interface still incomplete I haven’t been able to do a full test of my Apple 1. However, I was able to enter the test program from the Apple 1 operations manual. The program ran just as expected.
At this point I am waiting for my replacement ATMEGA8515 for my IIe interface to arrive from Jameco. I figured out that I had accidentally connected D6 to pin 7 on the keyboard socket which is 12V+. This must have burned that pin causing it to no longer work. I am also finalizing the PCB layout to do a small run on these interface boards.