After fixing the little display list weirdness, it works now. A tight locked interrupt loop that changes the color of every four lines (more or less) via a display list interrupt, using an increment inside the interrupt routine to change a page zero counter. It runs very fast, so it tends to strobe.. Now i need to learn proper delaying techniques. I will be tweaking this routine to make the effect not so perceptively fast, but at least it works. Yay :-)

-Thom

2puck.zip