MOTM

Yep, Modcan and Serge.

http://www.modcan.com/MODHTML/boolean.html

http://www.wwa.com/~johnp/wiz_cv_trig.htm

By the way - here's a link I just bumped into at the modcan site that 
you guys might be interested in.  Haven't read it through yet but 
looked interesting:

http://www.modcan.com/synth_prog.pdf

--- In motm@y..., "sikorsky" <vulture.squadron@s...> wrote:
>> apart from the EFM boolean logic module, does anyone know of any 
other synth manufactuer who makes a similar thing (Emu excepted)