STATE_SYSEX_0
case STATE_SYSEX_0:
case STATE_SYSEX_0:
next_state = STATE_SYSEX_0;
case STATE_SYSEX_0:
case STATE_SYSEX_0:
next_state = STATE_SYSEX_0;
case STATE_SYSEX_0:
case STATE_SYSEX_0:
port->state = STATE_SYSEX_0;