[sdiy] M110 with more outputs

[Scott Nordlund]

> (This is in fact an open letter to Neil.)
>
> No idea if it's technically possible, but if the next revision
> of your M110 clone could have outputs for more than 4 octaves of
> squares, that would be I/O pins well spent. That annoying whine
> four octaves above is probably the worst feature of the Siel
> Mono. Really limits its field of application.

It will likely need a higher clock rate if you want to preserve pitch resolution.
Those buzzy sawtooth waves are really irritating, it's the bane of divide-down architectures. I like it on triangle waves, though (as found in the Crumar Bit One, Casio HT series, NES...). The Polymoog had a reasonable solution...