The digital waveshaper chip can be ordered.
The price is $23.
The chip creates a sawwave from an edge triggered input.
The sawwave can be either hardsynced or ringmodulated from a second input.
The mode input is drawn as a switch but it works at audiorate so can be used as a modulator aswell.
Doing so introduces very strange waveforms as the mode changes mid cycle.
Power supply is 2.7-5volt so it’s a perfect match for the VCDM.