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Date:      Sat, 1 Jan 2000 15:51:36 -0600
From:      "Matthew D. Fuller" <fullermd@futuresouth.com>
To:        Brian Fundakowski Feldman <green@FreeBSD.ORG>
Cc:        Chuck Robey <chuckr@picnic.mat.net>, FreeBSD-current@FreeBSD.ORG
Subject:   Re: multiple cd devices
Message-ID:  <20000101155136.C3800@futuresouth.com>
In-Reply-To: <Pine.BSF.4.10.9912310141580.4996-100000@green.dyndns.org>
References:  <Pine.BSF.4.10.9912310000420.354-100000@picnic.mat.net> <Pine.BSF.4.10.9912310141580.4996-100000@green.dyndns.org>

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On Fri, Dec 31, 1999 at 01:45:31AM -0500, a little birdie told me
that Brian Fundakowski Feldman remarked
> The way certain devices, like cd with its monotonically increasing counter
> where devices are probed in order and assigned device based on precedence
> and not hardwiring/controller connection, work is consistent between
> the kernel and MAKEDEV.  If you have 2 cd devices, you have cd0 and cd1,
> so MAKEDEV accepts "cd2" for "two cd devices".  All CD devices work
> that way.  Disks don't, because there is potential for hard-wiring
> there, and will often be gaps.

FWIW, MAKEDEV for vty's (and pty's too?  dunno) works the same.




-- 
Matthew Fuller     (MF4839)     |    fullermd@over-yonder.net
Unix Systems Administrator      |    fullermd@futuresouth.com
Specializing in FreeBSD         |    http://www.over-yonder.net/

"The only reason I'm burning my candle at both ends, is because I
      haven't figured out how to light the middle yet"


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