Analogue-sequencer

>There shouldn't be much drift in the 808 DIN clock.
>The tempo may gradually change with temperature, since the clock is built
>from some logic gates, resistors and caps. The thresholds will move
slightly
>as things warm up, but not so it should really be noticeable as any kind of
>'feel'.
>The way the 808 CPU resonds to the DIN clock causes a timing variation that
>you may notice...
>This effect is more noticeable on the 303, which uses the same CPU (with
>different code, obviously) and the same method of following the clock.
>There is an extra timer circuit interrupting the 808, 303 and 606 CPUs
every
>2ms or so.
>The DIN clock line is checked to see if it has gone high during the
>interrupt routine triggered by this extra clock.
>So in effect, the 808 CPU quantises the incoming DIN sync to 2ms intervals.
>This introduces a very subtle timing shift depending on the underlying
tempo
>of the clock signal. You very likely wont notice it consciously, although
>you can notice the effect on the 303 if you set up a pattern to repeat the
>same note every 16th, set up a sound with a very snappy envelope, then
>gradually increase the tempo. There is a cyclic shift in the sound as the
>relationship between the tempo clock and fixed interrupt clock changes.

>Cheers,
>Colin f

Maybe im confused but are you talking about the P3 driving the 808 above?
What i mean is the 808 driving the P3.

When i use the 808 as tempo master through the dyn to midi converter there
is a tempo variation which can be seen on ableton or cubase bpm counter.
It drifts regularly by up to 2 bpm.

/m