restart after power outage

[steve%prd.co.uk@localhost (Steve Blinkhorn)]

We had a power outage last night, which is a very rare event
hereabouts.  All our machines restarted normally when power was
restored, Internet connection and WiFi the same, but for one utility
machine which provides mail and name service.  Looking at the lack of
entries in /var/log/messages, and the identical NetBSD configuration
on other machines, it seems to me that there must be an incorrect BIOS
setting.  

Because this is a headless server with no out-of-band remote console,
and because of the physical disposition of equipment and how the
screen and keyboard are connected, it is not a simple matter matter to
get to the BIOS in the ordinary way.

Is there a way of reading (or even better writing) the CMOS settings
from within NetBSD?

-- 
Steve Blinkhorn <steve%prd.co.uk@localhost>