how to force a dump?

[era at NIWOT.UCAR.EDU]

We have an occasional situation where our 90x running 4.4 freezes
up.  The system activity light indicates something going on, but
there is no response to attempts to get into the machine thru the
network or console.

Question: is there some way, from one of the COS panels, to coerce
OSx into dropping a core file?

Thanks in advance for your assistance...

Ed Arnold
era at ncar.ucar.edu