Yamaha CS80

>
> Someone asked about replacing the EG chips. This is somewhat more
> complicated in that it is hard to get that many parts into a retrofit
> board that would fit reasonably into an IG00152/159 socket location.
> But, I have a solution that involves using a microcontroller to do the
> envelopes with high enough resolution one cannot tell the functions are
> computed in the discrete time domain instead of the continuous time 
> domain.
Hey - the CS80 already does virtually the same thing for portamento.  It 
digitally steps the DAC and smooths out the steps with a capacitor.


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