> Using the second row of knobs i can make a 16 step seq, but i
> have to put the jack in and out "a la mano". im looking for a
> automatic solution

For thhis you may use a VC switch (A-150) which is controlled by a clock
divider (A-160). As clock input of the A-160 one of the trigger rows of the
A-155 may be used (only step 1 active). Then you have to use the /2 output
to control the A-150. But you may even use the same clock as the A-155
clock. Then the /8 output of the A-160 is used to control the A-150. This
solution has the advantage that unit #2 of the A-150 can be used to switch
even the trigger rows of the A-155.

Hope this helps
Dieter Doepfer