#define BTN_SR	   2048
#define BTN_SL	   1024
#define BTN_X	   512
#define BTN_A	   256
#define BTN_RIGHT  128
#define BTN_LEFT   64
#define BTN_DOWN   32
#define BTN_UP     16
#define BTN_START  8
#define BTN_SELECT 4
#define BTN_Y      2
#define BTN_B      1