>PS. Out of interest - does anyone know if DCO means the actual
>oscillators are digital, or are they analog oscillators being >digitally
>controlled??
DCO can mean several different things....it can mean a digital clock signal
sent to analog circuits to create the waveform (I think the Juno works like
this), it can mean digital waves that come from wavetables( PPG), or it can
mean the waves are digitally synthesized within the chip (SID chip).
Another option - a normal analogue oscillator which doesn't so much have a voltage controlled input stage, so much as a 'ladder' digital to analogue converter, whereby say 8 bits are used to select resistance sums, the resulting voltage through which governs the centre frequency of the oscillator.