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Date:      Wed, 4 Nov 1998 12:00:01 -0800 (PST)
From:      "Kenneth D. Merry" <ken@plutotech.com>
To:        freebsd-bugs@FreeBSD.ORG
Subject:   Re: kern/8555: boot panic with SONY SCSI CD-ROM CDU625-S 1.0r hooked
Message-ID:  <199811042000.MAA25112@freefall.freebsd.org>

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The following reply was made to PR kern/8555; it has been noted by GNATS.

From: "Kenneth D. Merry" <ken@plutotech.com>
To: Liviu.Ionescu@Romania.EU.net
Cc: freebsd-bugs@FreeBSD.ORG, freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: kern/8555: boot panic with SONY SCSI CD-ROM CDU625-S 1.0r hooked
Date: Wed, 4 Nov 1998 12:59:27 -0700 (MST)

 Liviu Ionescu wrote...
 >  I applied the patch and (bingo!) the kernel now boots without panic.
 >  
 >  the picture also changed a bit, the CD-ROM is listed now at 20.0MB/s.
 >  
 >  but when I try to mount a disc I get an error:
 >  
 >  boca# mount /dev/cd0c /mnt
 >  mount: Input/output error
 >  
 >  and the syslog shows:
 >  
 >  Nov  4 19:50:03 boca /kernel: (cd0:ahc1:0:3:0): parity error during Command
 >  phase.
 >  Nov  4 19:50:03 boca /kernel: (cd0:ahc1:0:3:0): parity error during Command
 >  phase.
 >  Nov  4 19:50:03 boca /kernel: SEQADDR == 0x153
 >  Nov  4 19:50:03 boca /kernel: SEQADDR == 0x153
 >  Nov  4 19:50:03 boca /kernel: SCSIRATE == 0xf
 >  Nov  4 19:50:03 boca /kernel: SCSIRATE == 0xf
 >  Nov  4 19:50:12 boca /kernel: (cd0:ahc1:0:3:0): parity error during Command
 >  phase.
 >  Nov  4 19:50:12 boca /kernel: (cd0:ahc1:0:3:0): parity error during Command
 >  phase.
 >  Nov  4 19:50:12 boca /kernel: SEQADDR == 0x153
 >  Nov  4 19:50:12 boca /kernel: SEQADDR == 0x153
 >  Nov  4 19:50:12 boca /kernel: SCSIRATE == 0xf
 >  Nov  4 19:50:12 boca /kernel: SCSIRATE == 0xf
 >  
 >  I also tried to remove the parity/termination jumpers from the Sony drive,
 >  without success. anyway, I remember that exactly the same hardware
 >  configuration worked fine with 2.2.7 with cam patches applied, so it
 >  shouldn't be a parity/terminator misconfiguration.
 
 This really looks like a cabling or termination problem.  The Adaptec
 driver in -current isn't significantly different than the CAM driver you
 used with 2.2.7.  So it's most likely some change in your hardware that has
 caused the problem.
 
 Ken
 -- 
 Kenneth Merry
 ken@plutotech.com

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