[sdiy] Interesting blog with Roland Alpha Juno details

[John]

Oh, very neat. I've long wondered about the stranger waveforms on the
Alpha Juno; I'd suspected they might be an indication that the "DCO"
was actually pure digital and the sawtooth constructed from weighted
binary outputs (as on the Poly-800,) with the weird stuff created by
selectively ANDing some of the bits, but looking at his scope outputs
there's a definite smooth slope to the sawtooth even on the chopped-up
versions, so it appears that's not the case. Interesting!