[sdiy] Saw vs Triangle Sync

[David G. Dixon]

> I would think the ability to choose between "Reset waveform" sync and
> "Change direction" sync would only be available with a Tri core. Yes?
> No? Tim (not sure whether I should be undecided... or not) Servo
> 
> Can you say "Zeroscillator...?" :)

You wouldn't need a TZ-VCO for that, but a TZ Sawcore a la Ian Fritz would
give the option of triangle-like sync because the saw can change direction
(a very triangular thing to do, so they tell me...)