ok the buttons are firing interrupts now, at pins 13 and 14 where its hopefully easy to build a device for yorgo
interrupt polling during video loop but this is majorly unresponsive
check interrupt before pulling buffer, but we're not joyous yet
rework interrupt code so we can break out of loop more cleanly; this seems to allow the movie switching to work
make use of new macro, DEBUG_PRINT, off by default
ws to match (ugly) code style
ws
re-enable debug