Not sure about the buchla rm, but as I said previously the serge Ring
have it, including the CV for the mode.

Josue.

> If I recall correctly from the days of my long lost and misspent
> youth, the Buchla 200 had a similar feature in its ring modulator.
> Maybe one of the more technical folk on this list can confirm if it
> was done in the way I have outlined above. (Peter, are you there )
>
> SHM