tr

Format

The format for this command is:

tr [-2] [port]

where:

	-2 	Selects 2-port mode.
	port	Selects a specific port

Functional Description

The tr command selects transparent mode. In transparent mode, the Monitor copies any characters typed on the keyboard to the selected port and then copies characters arriving at the selected port to the screen. This command can be used for two different functions.

• To allow the user run the Monitor on the same serial port that is used as a login line to your host. Do this by connnecting tty1 to your host system, and tty0 to your terminal. Typing 'tr' on your terminal will connect you with your host.

• To allow the user to 'rlogin' to another board via a serial port or pseudo tty port. This mode is used on the ATMizer platform in order to 'talk' to the SAR board. For example,

  	PMON> tr tty2			connect to port tty2
  	SAR> r				display registers on SAR board
  	^K				return to main board
  	PMON> r				display registers on main board
  

  tty2 is the name of the pseudo tty port (located in shared memory) that is used to communicate with the SAR board.

  Note that if you are using 2-port download mode. You will need to add the option '-2' to indicate that you need 2-port transparent mode. For example,

  	PMON> tr -2 tty2
  

  In this case the Monitor not only copies characters typed on the keyboard to tty2 and characters arriving on tty2 to the screen. It also copies characters arriving on tty1 to tty3, and characters arriving on tty3 to tty1.

The trabort Variable

The environment variable trabort selects the character that terminates the transparent mode and returns the Monitor to the default command mode.

The hostport Variable

The environment variable hostport determines the default port for the tr command.

See Also

set command for the setup of the environment variables.