K8044 software bug?

Hi all

I’ve got a couple of K8044 boards (10 output driver), and when running in the random mode (press SW2 when powering up) they run “randomly” ok for a while, then they seem to get stuck in a loop, repeating the last 8? 10? patterns over and over again. I’ve tried swapping the PIC chips between boards but they all seem to do it.

Anyone else actually spotted this? Is it a software glitch or are they meant to do this?

Also, sometimes when powering up in normal (pattern) mode it gets stuck on the first pattern and doesnt automatically cycle through to the next one. I can’t work out why it sometimes gets ‘stuck’ and sometimes doesnt. It appears to be independent of whether you’ve pressed SW1 or not…

cheers!

Mike