very cool, been using the tv out library and a pile of ram in a 1284 to get 40 char, this is more what I was looking for (though basic bitmap graphics with tv out has its interesting parts)
Very cool. Given how cheap something like the Teensy 3.0 is, perhaps this whole thing could be rolled into that very fast/high performance chip, for a simpler, single board/chip solution? Or if you need the 5v support, perhaps the Teensy++ 2.0 could do it? It's got a fair bit of ram onboard compared to the 328..