I was very interested to read that the Mike's front panel is compatible with the 8800b CPU board. I have an 8800b CPU board that came with a broken Altair B Turnkey system that I bought years ago. The CPU board is in good condition. I was able to test the 8080a and 8212 chips on my reproduction CPU board. and they both work. So I thought I'd try connecting it to the 8800c.
So far I've replaced both voltage regulators. Both were reading higher voltages than expected. From memory the 7805 was at 6.6v and the 7812 was at 14v. Prior to replacing the voltage regulators there was no response from the front panel with the 8800b CPU plugged in. But after replacing the voltage regulators, I can press run and see some activity going on.
The 8800b board uses the smaller ten pin Molex connector, so I couldn't plug it into the front panel interface board. From what I've read only eight of the pins are connected, so it should connect in the same way as the 8800 CPU. This weekend I'll make up a cable and see if it works.
Is there anything I'm missing? Should the 8800b CPU just work in this system without any other changes?