Ah, looked it up and found a brochure for that machine. Surprising how much it looks like a modular. I've actually not seen many like that. Is that one in particular a tube unit? Would explain the +/- 100V.
Definitely would be interested to see how it all turns out, especially how you implement the voltage shifts.
Ah, yea that would make sense then, with not being able to access all the inputs and outputs you would need to really dig into analog circuits on a lower level.
Would be fun to see it done though. Maths is definitely a module I want to learn a bit more about; it's on my "to-get" list.
Is it the Comdyna GP-6 that you are referring to? That was one of the first things that came up when I looked it up.
Might just have to find some of these old analog machines; they look really fascinating, and not just from a synthesizer point of view.