Select - signal from pi to gamepad http://applause.elfmimi.jp/md6bpad-e.html http://www.cs.cmu.edu/~chuck/infopg/segasix.txt send "Select Low" read 1 row(data0-5) send "Select High" read 2 row send "Select Low" read 1 row send "Select High" read 2 row send "Select Low" read 3 row send "Select High" ...