Ctty Ü
   ßßßßß

 Change the terminal device for your DOS session.

 Syntax: CTTY device
   device  The device to use.  Valid devices are prn, lpt1, lpt2, lpt3,
           con, aux, com1, com2, com3, com4.

 Setting up the serial port
 Use the mode command to set up your serial port for baud rate, parity,
 data bits, and stop bits before using the ctty command.

 Using ctty with programs that do not use FreeDOS
 The ctty command has no effect on these programs that send input
 directly to the hardware on your computer.  It affects only programs
 that use FreeDOS for input and output.

 Setting the terminal device
 In addition to the ctty command, you can use the device parameter of
 the command command to specify the input device.

 Example:
 The following command changes control of all input and output from
 the current device (your computer screen and keyboard to the AUX port:

   C:\>ctty aux

 See Also:
   Command
   Mode