Turns out the 7000 is just about exactly the same protocol as the 3900, just a couple minor differences and the 3900 does some extra stuff.. So I have a theoretical implementation for the 7000. The k610a's protocol is very limited and simple so that's easy.

I also spent some time working on the drawing algorithm since it's particularly important to me (high res + slow serial on the 3900), think I came up with something decent. We'll see when I get back tomorrow.

If you want a small one to test on, let me know. I can send you my assembled beta to test with..

Sounds like a better idea than going back and forth with you seeing what works.. See PM.