> I'm now pretty sure the sequence is at least 2^19 = 524288 long, so

at

> 1kHz (approx knob setting 4), it will take nearly 9 minutes to

repeat.

With a little computational help from the kind people on the Synth DIY
list, and some cajoling to get me to run some calcs myself, I can
confirm that the sequence length is actually 262140 = 2^18-4. Kind of a
strange number, but I'm working on shedding some light on it!

Tim