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9. Before using the MVME2300SC after the initial installation, set the
Autoboot
Autoboot is a software routine included in the PPCBug Flash/EPROM to
provide an independent mechanism for booting operating systems. The
autoboot routine automatically scans for controllers and devices in a
specified sequence until a valid bootable device containing a boot media is
found or the list is exhausted. If a valid bootable device is found, a boot
from that device is started. The controller scanning sequence goes from the
lowest controller Logical Unit Number (LUN) detected to the highest LUN
detected.
At power-up, Autoboot is enabled and (provided that the drive and
controller numbers encountered are valid) the following message is
displayed upon the system console:
Autoboot in progress... To abort hit <BREAK>
A delay follows this message so that you can abort the Autoboot process if
you wish. Then the actual I/O begins: the program designated within the
volume ID of the media specified is loaded into RAM and control passes
to it. If you want to gain control without Autoboot during this time,
however, you can press the <BREAK> key or use the
switches on the front panel.
The Autoboot process is controlled by parameters contained in the ENV
command. These parameters allow the selection of specific boot devices
and files, and allow programming of the Boot delay. Refer to the ENV
command description in Chapter 3 for more details.
2-7
date and time using the following command line structure:
SET [mmddyyhhmm]|[<+/-CAL>;C]
PPC-Bug>
For example, the following command line starts the real-time clock
and sets the date and time to 10:37 a.m., November 7, 2001:
SET 1107011037
PPC-Bug>
The board's self-tests and operating systems require that the real-
time clock be running.
Bringing up the Board
or
ABORT
RESET
2
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