B4800
if (baud == B4800)
tty_drv->init_termios.c_cflag = B4800 | CS8 | CREAD | HUPCL | CLOCAL;
{ 4800, B4800 },
{ 4800, B4800 },
case 4800: cflag |= B4800; break;
{ 4800, B4800 },
case B4800: baud = 4800; break;
up->cflag = B4800 | CS8 | CLOCAL | CREAD;
case B4800: baud = 4800; break;
up->cflag = B4800 | CS8 | CLOCAL | CREAD;
B4800, B9600, B19200, B38400, B57600, B115200, B230400, B460800,