[sdiy] Polyevolver internals

[Tom Wiltshire]

Hi All,

Does anyone happen to know what voice processors are inside the DSI  
Polyevolver/Evolver? Alternatively, are there any good internal  
photos of one of these opened up?

I've had a hunt about, but I didn't find anything.

Background: After the recent discussion about the Prophet 08 DCO  
glitch, I'm spending my Christmas holidays messing around with DCO  
designs based on
  dsPICs, just like Dave Smith did. What's intriguing me is what he  
used for the *digital* oscillators in the Polyevolver - are they  
generated by the same uP? How many uPs per voice? Or put another way,  
how much did DSI manage to squeeze out of these chips, and can I hope  
to do better?

Thanks for any pointers,
Tom