DEC Personal DECstation 5000 User Manual page 135

Troubleshooting
13.4 Connecting and Using an Alternate Terminal
Once you have connected the terminal to the RS232 port, it is important to
remember to disconnect the keyboard from the serial port before turning on
the system power. This will insure that the text is routed to your terminal and
not to the graphics connector.
You can now use the error messages displayed on the terminal to resolve
failures and re-establish video on your graphics monitor.
After you establish video on your graphics monitor, you may from time to time
wish to use a terminal as your console device. The default power-up console
assignment can be defeated by issuing the following console command:
>>setenv console s
You can switch your console back to your graphics monitor with the command:
>>setenv console *
Some users may configure their system with several graphics monitors to take
advantage of the system's multi-screen capabilities. This raises the question
of which graphics monitor will be used as the default console device after the
system detects the SERIAL.bus keyboard.
The answer to this question in that the system selects the monitor connected
to the video controller with the lowest TURBOchannel device number. Since
the base video operates on slot 3, the system will select the controller located
in slot 0 or 1 as the default console device.
Troubleshooting 13–7