Problems Tweaking my SunFire V100

[kury]

I have a handful of issues on my new (to me) V100 and was wondering if anyone new how to fix any of the following:

• On halt the system just drops me to the OK/OBP prompt and doesn't poweroff. Is there a way to make this happen?
  
• I figured out how to access the OK/OBP variables using sparc-utils eeprom command but I'm still looking for a way to toggle the fault LED (aka faulton and faultoff commands in the LOM) Is this possible?
  
• The SunFire v100 hardware has a hardware level watchdog timer. Anyone know if there is a way to use/interface with this so if the OS locks up the machine will be rebooted?
  

Thanks