From owner-freebsd-stable  Sun Aug 29  7:47: 4 1999
Delivered-To: freebsd-stable@freebsd.org
Received: from dorifer.heim3.tu-clausthal.de (dorifer.heim3.tu-clausthal.de [139.174.243.252])
	by hub.freebsd.org (Postfix) with ESMTP id 6FC8A15139
	for <freebsd-stable@FreeBSD.ORG>; Sun, 29 Aug 1999 07:47:00 -0700 (PDT)
	(envelope-from olli@dorifer.heim3.tu-clausthal.de)
Received: (from olli@localhost)
	by dorifer.heim3.tu-clausthal.de (8.8.8/8.8.8) id QAA08709
	for freebsd-stable@FreeBSD.ORG; Sun, 29 Aug 1999 16:44:33 +0200 (CEST)
	(envelope-from olli)
Date: Sun, 29 Aug 1999 16:44:33 +0200 (CEST)
From: Oliver Fromme <olli@dorifer.heim3.tu-clausthal.de>
Message-Id: <199908291444.QAA08709@dorifer.heim3.tu-clausthal.de>
To: freebsd-stable@FreeBSD.ORG
Subject: Re: FYI: ATAPI CDROM dedection problem
Organization: Administration Heim 3
Reply-To: freebsd-stable@FreeBSD.ORG
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Newsreader: TIN [version 1.2 RZTUC(3) PL2]
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

Hi,

Just for the record, I have a box with a single CD-ROM drive
as master on the second IDE channel (no HDs or any other IDE
devices), and it's detected fine.  (Technical data:  ASUS TP4N
mainboard, P5-100 running at 75 MHz, old Aztec double-speed
CD-ROM drive, worked since 3.0-current, now 4.0-current, still
working fine.)

By the way, those combinations that involve a slave without a
master on the same channel are _not_ supposed to work.  They're
in violation of the spec:

 > IDE1, Master        IDE2, Slave                failed
 > IDE1, Slave           IDE2, Master             failed
 > IDE1, Slave           IDE2, Slave                failed
 > IDE2, Master        IDE1, Slave                failed
 > IDE2, Slave           IDE1, Master             failed
 > IDE2, Slave           IDE1, Slave                failed

So it is not a bug that FreeBSD fails to detect the drives
under those circumstances.

In the other cases where it failed, I guess that the CD-ROM
drive is misbehaving in some way (which is not surprising,
given the crappy specification...).

Regards
   Oliver

PS:  Buy SCSI.  :)

-- 
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
(Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de)

"In jedem Stück Kohle wartet ein Diamant auf seine Geburt"
                                         (Terry Pratchett)


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message