About the CS5

[List, Chris]

> This is quite common according to the manual with my Kenton MIDI-CV 
> interface. Most old analogs CV and Gate inputs bypass the Portamento 
> circuit. That's why people like Kenton implement the portamento in the

> interface. Has the benefit of allowing you to switch the portamento on
and 
> off or change the rate under MIDI control. Great for just sliding 
> individual notes, as in TB-303. Alternatively add an external
portamento 

Another nice way of doing this (as mentioned long ago by someone here -
Scott Gavenhorst (Sp?) - I think), that avoids all of the
voltage-control stuff is to make a simple pot / cap / buffer portamento
circuit and switch it with the normal (unportamento'ed) CV using some
kind of CMOS analog switch like a CD4053B, and driving the switch from
one of your gate outputs - this is nice and simple and still allows you
to have portamento on or off for different notes.

- CList