CR-10 + DUE + Smart Ramps

#define SERIAL_PORT 0
#define SERIAL_PORT_2 -1
#define BAUDRATE 115200
#define MOTHERBOARD BOARD_RAMPS4DUE_EFB
#define CUSTOM_MACHINE_NAME "DUE V_2 "
#define X_BED_SIZE 300
#define Y_BED_SIZE 300
#define Z_MAX_POS 400
#define EEPROM_SETTINGS 
//#define DISABLE_M503 
#define EEPROM_CHITCHAT
#define SDSUPPORT
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER