Hi @dusx the top comparator in the second row outputs "true" when there's a match but "true" and "false" when there isn't... as you say i think its a timing issue and its input is actually going from 1 to 0 very fast, hence causing true and false output

i've managed to create a work-around by increasing the first router's number of outputs from 9 to 10 and also the first table's number of inputs from 9 to 10 and then ignoring the first of each, as per this updated patch Step Sequencer (ver 25) workaround.izz which now achieves what i was after

rgds, Mr J

Following an old text based tutorial I had written a few years ago (Isadora V1, and CPU only) this new Tutorial walks you thru building a fun little component that I refer to as a Video Step Sequencer.
~20 mins to build this gem. 

Build Art with Isadora.