Well, AIM 65 still not working.
![Sad :(](./images/smilies/icon_sad.gif)
Bummer.
Thanks for all the help and encouragement.
I used the NOP generator (Thanks Lee) to trace down problems with the Address lines. I was able to get all the address lines working by using the vacuum and and paint brush to get whatever was causing the stuck line out (thanks again, Lee) Finally got all the address lines working as they should (as near as I can tell with a logic probe).
Then I put all the removed components back, and well, no joy.
I then decided to make sure one more time that the address lines were OK, so back to the NOP generator. All looked OK.
I then started reassembling a piece at a time, first the ROM, and RAM, and display, no joy. So I thoght, well maybe the program uses a timer in the RIOT or VIA, so I put them back in one at a time, no joy. put the last VIA in, the rest of the RAM and tried one last time, no joy.
Well, I'm out of ideas, I think I'll put it away for a couple of days, then maybe revisit it with fresh eyes.
If anyone has any other ideas I can try, I'm willing to try most anything (that doesn't involve solder).
Thanks for any and all help,
ANdy