IBM Enterprise Server H80 Series - Manual (Page 24)

8 Key
To enter the Open Firmware command line, press the numeric 8 key after the word
keyboard displays and before the last word ( speaker ) displays during startup. After
you press the 8 key, the remaining POST indicators display until initialization
completes.
When initialization and POST are complete, the Open Firmware command line (an OK
prompt) displays.
Use the Open Firmware command line to set up adapters that are not configurable
with the System Management Services. Your adapter documentation directs you to
use this option if it is needed.
To exit from the Open Firmware command prompt, type reset-all or power off the
system and reboot.
8 RS/6000 Enterprise Server Model H80 Series User's Guide