3-6 SPARCstation 5 Service Manual—November 1996
3
3.4 Abbreviated Diagnostic Mode
A silent Power-On Self-Test (POST) is run if you disconnect the keyboard and
you set the diag-switch? NVRAM parameter to false in the OpenBoot
PROM. This Power-On Self-Test is silent (no progressive test messages are
printed out). If an error or errors occur during the abbreviated Power-On
Self-Test, all error messages are displayed on the TTY or tip window.
3.4.1 Setting Up a tip Connection to Another System
You can use the serial port on your SPARCstation 5 system to connect to
another Sun workstation (either the same type of SPARC™ system or a
different type of Sun workstation or server system). This connection lets you
use a shell window on the Sun workstation as a terminal to the SPARCstation
5 being tested.
The tip method is recommended, because it lets you use SunOS™ windowing
and operating system features to help you work with the boot PROM.
To make a tip connection, follow these steps:
1. Connect the system’s serial port (ttya) to another Sun workstation ttya
serial port using a serial connection cable. This connection is made with a
3-wire null modem cable. Connect wires 3-2, 2-3, and 7-7.
2. At the other Sun workstation, add the following lines to the file
/etc/remote:
3. In a Shell Tool window on the Sun workstation, type tip hardwire.
(Some commands will not work properly in a Command Tool window.)
The system will reply connected.
hardwire:\
:dv=/dev/ttya:br#9600:el=^C^S^Q^U^D:ie=%$:oe=^D:
hostname% tip hardwire
connected
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