> cool. Perhaps I misread something along the way and/or lumped the A-191 with the A-190 series of which only one can
> write to the bus at a time. Given the module is hard to come by I didn't want to mess it up.

The A-191 had no access to the CV or Gate signal of the bus. It was connected only to -12V, GND, +12V and +5V.

Best wishes
Dieter Doepfer