ah nice. I wanted to try and dump my milton without frying the chip open. I thought it was a 6804 instead of a 6805 going by the pinout. this is a similar chip but is bit-serial so the die is smaller (but runs slower). I think I figured that out via the pinout, but I could be wrong on that. it was a couple years ago.

Guess if it's a 6805 I can try the usual "secret" dumping method on it.