Problem Solving and Support
Using the OpenBoot Diagnostics
16-10
SPARCbook Portable Workstation User Guide
Full system hardware selftest
Carrying out a full system selftest with OpenBoot entails the following
basic steps:
•
Connecting an ASCII terminal to one of the serial ports on the
rear of your SPARCbook.
•
Configuring OpenBoot to enable diagnostics and terminal I/O.
•
Entering the selftest command.
ò
Connecting an ASCII terminal
You can connect an ASCII erminal to either of the serial ports. See
“Using Serial Devices” on page 12-2.
The terminal should be configured for 9600 baud operation, 8 bits, no
parity and no handshaking.
ò
Enabling Terminal I/O
Enter the following commands to configure OpenBoot to enable
diagnostics. Use the serial channel as the input and output devices and
to inhibit auto-booting:
setenv diag-switch? true
setenv output-device ttya
setenv input-device ttya
setenv auto-boot? false
Note
The last command will prevent your SPARCbook from automatically booting the
operating system when you power on (the normal mode of operation). You must reverse
these commands, as described below, to re-enable normal start-up operation.
Now reset your SPARCbook by pressing
Pause-R
. Your SPARCbook
should display a long sequence of messages on the terminal followed by
the
ok
prompt. If the
ok
prompt is not displayed, try pressing
Return
on
the terminal’s keyboard a few times. If it is still not displayed, press
Pause-A
on the SPARCbook’s keyboard type and then:
ttya io
If the
ok
prompt still does not appear, contact customer support or your
supplier for assistance.
S3UG4_Book Page 10 Friday, August 8, 1997 11:37 am