User`s guide

Getting Started 2–5
Setting Up the SROM Serial Port Connection
All examples and command descriptions that follow assume that the motherboard
SROM port is connected to port /dev/tty00.
To enable these ports for use with the motherboard, follow these steps:
1. Log in as superuser.
2. Modify the following two files:
/etc/remote
/etc/inittab
a. Add the following two lines to the /etc/remote file. These lines define
a device to connect to when using the DIGITAL UNIX tip command.
port_name0 :dv=/dev/tty00:br#9600:pa=none:
port_name1 :dv=/dev/tty01:br#9600:pa=none:
The port_name refers to an arbitrary name that you assign to that port.
b. Modify the /etc/inittab file to disable logins on the two serial
communication ports by setting the third field to off. For example, modify
the tty00 and tty01 lines as follows:
tty00:23:off:/usr/sbin/getty /dev/tty00 9600
tty01:23:off:/usr/sbin/getty /dev/tty01 9600
3. Reboot the system, or issue the following command to ensure that the modified
files take effect:
# /sbin/init q
2.4.5.1 Connecting to a Serial Port Under DIGITAL UNIX
After you modify the /etc/remote and /etc/inittab files, you can
connect to the serial port under the DIGITAL UNIX operating system using the
DIGITAL UNIX tip command. If the connection is successful, the mini-debugger
prompt displays after you press a key. For example:
% tip port_name0
! key is pressed.
SROM>
Type ~. to exit the DIGITAL UNIX tip command.