B2400
{ 2400, B2400 },
{ 2400, B2400 },
case 2400: cflag |= B2400; break;
{ 2400, B2400 },
case B2400: baud = 2400; break;
case B2400: baud = 2400; break;
B0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,