/* Joystick Module Header File for Atari 400 & 800 */

#define JYSTKS 4 //Number of Joysticks

#define JOYUP $01 //Bit 0 - Up    
#define JOYDN $02 //Bit 1 - Down  
#define JOYLF $04 //Bit 2 - Left  
#define JOYRT $08 //Bit 3 - Right 
#define JOYB0 $10 //Bit 4 - Button

/* Read Joystick State             *
 * Args: n = Joystick Number       *
 * Returns: Joystick Status        *
 *          $FF = Invalid Argument */
char joystk();