Hi,
Thanks for the ideas. I didn't change whether or not the signal was inverted from what the PC10 used. I'm highly sure it's right, though. The top pic is of wrong colors (on that board set), but the bottom pic has correct colors (on a different board set). Since the one set works correctly, I'm assuming that it's correct (unless that board is putting out inverted video, and then being 'incorrectly' inverted by the monitor back to correct). Either way, both boards create this same squiggle in the pic, making me think that it's something to do with the monitor...
Thanks,
Rick