openboot - test and gather information 

.version - Displays version and date of the startup PROM.
banner - You will see the banner, that is displayed at power-on. It is useful to gather some data about CPUs.
.idprom - display ID prom contents
pcia-probe-list - Test PCI on computers that have a PCI bus.
module-info - This will display the Buses clockspeed, and processors frequency and amount of cache.
probe-scsi - This will test all devices connected to the on board SCSI controler.
probe-scsi-all - This will test all devices connected to all the SCSI controlers.
show-devs - This displays all installed and probed devices.
show-sbus - Use this, if you just want to display a list of installed and probed SBus devices.
test-all - This will test all devices in the system that have a self test program.
test floppy - If a floppy drive is installed, it will test it reminding you to have a formated floppy disk inside.
test-memory - If the system diag-switch? is set to true, this will test the memory.
test net - This will test the network interfaces
watch-aui - This will test the AUI ethernet link. You will see '.' for good packets and 'X" for bad ones. Strike any
key to abort.
watch-clock - This will test the real time clock chip, it will tick once a second. To stop this test strike any key.
watch-net - This will check the network connection ( both AUI and TP ). You will see '.' for good packets and 'X" for
bad ones. Strike any key to abort.
watch-net-all - This will test all Ethernet interfaces. You will see '.' for good packets and 'X" for bad ones.
Strike any key to abort. When you abort one, it will test the next one.
watch-tpe - This will check the TPE ethernet interface. You will see '.' for good packets and 'X" for bad ones.
Strike any key to abort.

6.3 Boot commands. 

boot - Boot kernel from default device.
boot cdrom - Boot kernel from CDROM drive.
boot net-tpe - Boot kernel from network urnel from CDROM drive, this is the command you are the more likely to type
when installing Linux.
boot net - Boot kernel from network using auto-selected interface.
boot net-aui - Boot kernel from network using AUI interface.
boot net-tpe - Boot kernel from network using TPE interface.
boot tape - Boot default file from tape.

setenv boot-device disk3  - set the boot device.

nvalias - use this to make new alias, ie:
 nvalias disk7 /iommu@f,e0000000/sbus@f,e0001000/dma@3,81000/esp@3,80000/sd2,0


Other 

mkp   - command to write the ethernet address and hostid and recreates the checksum.
set-defaults
set-nvram


Setting the screen:

   setenv output-device screen:r1024x768x60

	from solaris: fbconfig

openboot via solaris 
   /usr/sbin/eeprom output-device=screen:r1024x768x60

configure system

Reconfig devices:
 # touch /reconfigure; init 6 "
 # reboot - -r
 ok boot -r

unconfig your system: 
  # sys-unconfig