I've been looking over the schematic, and I'm a bit confused as to why the full i/o was not made available. Also the upper two external interrupt pins are not usable. Pin 9 (PE7) is simply not connected to anything, and (PE6) is being used for something else which I have not been able to figure out. I am a bit sad we won't have all 8 external interrupts available to us. Then again I may make my own board.