Hello,
Well, I know this is an old post, but I am currently very interested in this hardware. I worked at CEC PTT back in the day (in high school!) and I always wondered about these systems. (I got to push the BDAY button a few times - that's all they would let a high school kid do back in the day)
The schematics for a lot of the system is available. (Links at the end.) This was originally a 6502-based system, which read tape audio and data from a reel to reel drive. The tape format is mono audio on the left track, and digital data on the right. The buttons on the front panel could be used to control the tape drive - seeking around to certain types of programs for example. The cards could decode the signals for each character's pneumatics, stage lights, curtain controls, etc. with lots of blinkenlights on the front of each card. I assume these cards were connected to the various pneumatic actuators.
Sadly, the one piece of software that runs it, the code in the EPROM on the CPU card, has not been properly dumped and archived. I urge you to back that up and archive it properly (If your EPROM dies, there is no known copy of that data)
I am currently looking for an image of this EPROM to allow for emulation of the entire system. This would help with many things, including repair work, as well as recreating user documentation. (There are no user docs that I know of)
If you would be able to help by providing more pictures and especially data, I'd be happy to help with interpreting everything that's there, and helping with any repairs needed.
Thanks in advance,
-Frank Palazzolo
Info about the animatronics and some control unit drawings:
http://showbizpizza.com/info/documents/ptt/ptt_cyberamicspartsmanual.pdf
Important schematics for the cards:
https://archive.org/details/ptt-various-technical-docs-1979-1982
Information about the system - note the missing EPROM images(!)
https://decodedocdigitize.miraheze.org/wiki/Cyberamic_Control_System
The only known show tape that is properly archived with the data track:
https://archive.org/details/country-helen-1984-full-audio-signals-scans