Oracle Vacuum Cleaner CPU-56T Manual Do Utilizador

In order to change or interrupt the boot process in CORE, the following commands can be
executed:

S Skip POST: <Control>+<P>

S Enter user interface: <Control>+<U>

a

S User default NVRAM variables for this run: <Control>+<N>

a

S Turn−on messages (if <diag−switch> is set to true): <Control>+<M>

a

At hardware power−on or button power−on, the CORE firmware executes POST if the
NVRAM configuration parameter <diag−switch?> was set to true beforehand. The extents
of certain tests executed within in the POST depend on the state of the configuration
parameter <diag−level>.

a

You choose between minimal or maximal testing by setting this configuration parameter
to min or max. If the NVRAM configuration parameter <diag−switch?> is true for each
test, a message is displayed on a terminal connected to the serial I/O interface A.

a

If the system does not work correctly, error messages will be displayed which indicate the
problem. After POST, the OpenBoot firmware boots an operating system or enters the
Forth monitor, if the NVRAM configuration parameter <auto−boot?> is false.

Booting the system is the most important function of the OpenBoot firmware.

Booting is the process of loading and executing a stand−alone program such as the
operating system. After the system is powered on, it usually boots automatically after it
has passed POST which occurs without user intervention.

a

If necessary, you can explicitly initiate the boot process from the OpenBoot command
prompt. Automatic booting uses the default boot device specified in the nonvolatile RAM
(NVRAM). User−initiated booting either uses the default boot device or one specified by
the user.

a

In order to boot the system from the default boot device with default settings, enter the
following command at the Forth monitor prompt ok:

ok

a

The boot command has the following format: