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Date:      Sat, 3 Jun 1995 14:28:34 -0700 (PDT)
From:      "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
To:        mdomsch@dellgate.us.dell.com (Matt Domsch)
Cc:        mdomsch@dellgate.us.dell.com, freebsd-hackers@freebsd.org
Subject:   Re: NCR810 problem?
Message-ID:  <199506032128.OAA17262@gndrsh.aac.dev.com>
In-Reply-To: <m0sI0Uw-000D65C@dellgate.us.dell.com> from "Matt Domsch" at Jun 3, 95 04:12:45 pm

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> 
> > > 
> > > I tried installing 2.0.5-ALPHA today when I got the following error
> > > on boot from the install program:
> > > 
> > > assertion "cp == np->header.cp" failed: file "../../pci/ncr.c", line 5235
> > > assertion "cp" failed: file "../../pci/ncr.c", line 5236
> > > ncr0 targ0?: ERROR (80:100) (e-ab-2) (8/13) @ (10d4:e000000).
> > >              reg: da 10 0 13 47 8 0 1f 0 e 80 ab 80 0 3 0.
> > > ncr0: restart (fatal error).
> > > ncr0: reset by timeout.
> > > sd0: error reading primary partition table from fsbn 0 (sd0 bn 0; cn 0
> > > tn 0 sn 0)
> > > 
> > > 
> > > The install then will not continue.  The disk in question is a
> > > DEC DPS3107L (1020MB).  I low-level formatted it prior to the install.
> > > When this error started, I put a 100MB DOS partition on the disk which
> > > works just fine.
> > 
> 
> > "Rodney W. Grimes" writes:
> > Humm.. I've been runing a pile of DEC DPS3053L drives (sell about 3 to 5
> > of them a week) and have never seen this on a NCR using those drives.
> > 
> > These are the same series drives as the ones you are using.  Have
> > you ever installed FreeBSD on this before and this is a new bug, or
> > have you been having this problem in the past?
> > 
> > Are you using the active termination of the DSP3107L and have you
> > tripple checked all your devices to make sure termination is correct?
> > 
> 
> I have not tried to install FreeBSD before on these drives or this
> particular kind of system, though Solaris 2.4 X86 works fine on it
> with an identical hard disk.  Just to be safe, I tried a different DEC
> drive, and got the same results.  I even went back to the 2.0R and
> tried to install that, but often got SCSI resets on the disk which
> took several seconds (like 15) every couple minutes, so I gave up on
> that also.  Yes, the disk is properly ID'd and terminated and the NCR
> BIOS sees it and spins it up at system boot time.  There are also 2
> other devices on the SCSI bus, a NEC CD-ROM, and a DAT tape drive, and
> they are properly terminated and ID'd as well.

Pull the NEC and the DAT drive, there is a problem that will cause the
failure you are seing, but it should have happened only on the ID
of the NEC or DAT drive.

> 


-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation Company                   Custom computers for FreeBSD



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