30 years later...

[Grant Richter]

>
>You could save yourslef that third oscillator. Use a sub octave divider (a 
>simple flip-flop) to give you a square wave at half the frequency and use 
>this to switch between the two oscillators or even between different wave 
>outputs of one oscillator. Could even use a bigger divider, 1/4 or 1/8 for 
>more cycles of each shape. Just a thought....

Why not use a CD4052 1 of 4 mux. drive a CD4024 counter off of the square
wave output of the VCO and have each of the 4 mux. inputs be one waveform.
Using some center off switches you could switch the address lines to the mux.
to get different sequences of waveforms. I'm going to try this and let you know.

Grant