*BSD News Article 46867


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Newsgroups: comp.unix.bsd.freebsd.misc
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From: uhclem@nemesis.lonestar.org (Frank Durda IV)
Subject: Re: kernel panic when mounting cdrom
X-Newsreader: Tin 1.1 PL5
Organization: The Big Blue Box
Message-ID: <DBonnA.C6B@nemesis.lonestar.org>
References: <3tpae4$9ll@wn1.sci.kun.nl>
Date: Fri, 14 Jul 1995 01:47:33 GMT
Lines: 27

[0]Jos Vissers (jvissers@sci.kun.nl) wrote:
[0]I have installed the 2.0.5. release, to finally be able to 
[0]use my panasonic 562 cdrom player. When booting, the system detects
[0]the cdrom player( I manually specified the irq & address), but when I
[0]try to mount the device, I get a kernel panic.
[0]As far as I can tell, the system doesn't give any cdrom specific 
[0]error messages, just a page fault.

Because you mentioned having to specify the I/O port, I suspect the
adapter card you are using IS NOT a genuine Creative Labs card.
The version of the Matsushita/Panasonic CD-ROM driver that is in 2.0.5R
ONLY supports Creative Labs or 100% compatible driver interfaces.

A lot of sound cards claim 100% Sound Blaster compatibility, but they
are talking about the audio side, not the CD-ROM interfaces.

The thing to do is to get the latest version of the driver, or the
patches.  These changes support the LaserMate/IBM/Reveal/Media Vision/Crystal
version of the host interface, the one you find usually located at 0x340 or
at addresses up in the 0x6nn range.   Rebuild your kernel with that version
and see if it helps.

Frank Durda IV <uhclem@nemesis.lonestar.org>|"Your choice: Run "FreeBSD", or
or uhclem%nemesis@fw.ast.com (Fastest Route)| "Bob-Pro" aka Windows.  See? 
...letni!rwsys!nemesis!uhclem               | That choice wasn't so tough!"
...decvax!fw.ast.com!nemesis!uhclem         |