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Date: Thu, 27 Jan 2005 14:23:06 +1000
From: Peter Grehan <grehan@freebsd.org>
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To: Garance A Drosihn <drosih@rpi.edu>
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Subject: Re: Mac mini and FreeBSD - buildworld
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>> Command-Power on powerbooks does an NMI IIRC.
> 
> 
> Heh.  I was wondering about that, but the USB keyboard that I have
> does not include a power-on key...
> 
> My mac was not responding to anything on the keyboard, and attempts to
> ssh into the box were timing out, so I held down the power button on
> the back of the Mac-mini for a few (10?) seconds.  That successfully
> powered it down, and then I powered it back up.

  That's the equivalent for machines that don't have a programmer's
switch (e.g. eMac, G5 powermacs) since the external PMU microcontroller
handles the power switch and can be programmed to either cycle the power 
  or generate the 'nmi' interrupt.

later,

Peter.