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Date:      Tue, 08 Aug 2000 10:15:52 -0700
From:      Mike Smith <msmith@freebsd.org>
To:        boshea@ricochet.net
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Hardware suppported needed by reboot(2) for RB_POWEROFF 
Message-ID:  <200008081715.KAA12467@mass.osd.bsdi.com>
In-Reply-To: Your message of "Tue, 08 Aug 2000 09:31:19 PDT." <20000808093119.C351@beastie.localdomain> 

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> Hello,
> 
> For the record, I am running FreeBSD-CURRENT from August 2:
> 
> # uname -a
> FreeBSD panic.localdomain 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Wed Aug  2 
> 17:55:17 PDT 2000     root@panic.localdomain:/usr/obj/usr/local/cvsup/cur
> rent/src/sys/PANIC  i386
> 
> What is the interface used by the reboot() system call to power off the
> machine when the RB_POWEROFF flag is set?  The man page makes mention of
> hardware support, but doesn't specify what that support is, or how to
> use it.

That's platform-dependant.  On the x86, a conforming APM BIOS is required 
(or a device driver with a suitable hook for some other control 
interface).

-- 
... every activity meets with opposition, everyone who acts has his
rivals and unfortunately opponents also.  But not because people want
to be opponents, rather because the tasks and relationships force
people to take different points of view.  [Dr. Fritz Todt]




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