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Date:      Tue, 30 May 1995 17:28:31 -0500 (CDT)
From:      faulkner@mpd.tandem.com (Boyd Faulkner)
To:        agl@mac.glas.apc.org (Anthony Graphics)
Cc:        rgrimes@gndrsh.aac.dev.com, freebsd-hackers@FreeBSD.ORG
Subject:   Re: 950412 hangs on ncr0 probing:
Message-ID:  <9505302228.AA25014@olympus>
In-Reply-To: <Pine.LNX.3.91.950529110037.322A-100000@mail.redline.ru> from "Anthony Graphics" at May 29, 95 11:36:57 am

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> 
> On Sun, 28 May 1995, Rodney W. Grimes wrote:
> 
> > I think I matched your problem to another person.  But do realize
> > scsi bus termination errors are the #1 cause for failure so I will
> > always remind people right from the start to check this.  Even after
> > doing that I have found my self on site to repair a ``broken'' system,
> > only to find what I told them on the phone to check the did not and
> > infact had an incorrectly terminated bus.
> > 
> > There are still 2 places for you to have an error in your scsi termination
> > even with this simple set up.  Are the terminators enabled and powered up
> > on the NCR controller, and on the Quantum Lightning drive.
> > 
> Ok, ASUS SP3G always comes with NCR termination enabled.
> As for Quantum lightning, there are two physical units representing
> terminators and they are in place.
> Anyway, kernel -c
> disable wt0
> disable mcd0
> disable mcd1

I took these out of my config and I boot fine.


> helped (well mcd0 and mcd1 was on irq 10 and 11 and these ones
> are configured for pci Slots 1 & 2 on asus, I have no idea how
> pci bus works, but when I was installing Mach32 into the slot 1
> on the very same board in the machine running linux I had
> a conflict with AGUS which was using the very same irq.
> I wonder whether the problem was IRQ conflict or mcd autoprobing)
> 
> > Just because a scsi bus works on one controller does not make it right,
> > the termination could have been enabled on the 1542 and disabeld on
> > the NCR for example.
> > 
> Sure thing, but it's enabled in my case.

Ditto.

> 
> > > I booted 2.0-RELEASE ok, but then I was unable to recompile 0412
> > > under it (gcc-2.6.3 with -O0 was giving various signals trapped:
> >             ^^^^^^^^^^^^^^^^^^
> > 
> > Please don't try to fuss with compiler options when building the kernel,
> > It can cause problems, we compile the way we set things up because that
> > is what we know to work.  You put more variables into the equations when
> > you do this type of stuff!!
> > 
> Ok, I run 'config MYSYSTEMNAME' again and tried to compile:
> cc1 still boiling out with error 'exited on signal 11(sometimes other random
> signal, often 10))

I don't have problems with sig 10's or 11's but then I am running current.

> 
> Well, somebody pointed out optimization code is broken in 2.6.3
> so I tried to simplify freebsd-hacker's life (and can't compile 2.6.2
> because I have only one FreeBSD box at the site :-( )
> Anyway, 2.6.3 seemed to come with 940412 if my memory serves
> me and I don't keep 2.6.3 sources here, and 2.6.3 used to compile
> MYSYSTEMNAME before I switched to the machine with the ASUS SP3G board...
> 
> One thing to mention: I have compiled and installed gnu make into
> /usr/local/bin/make and /usr/local/bin precedes /usr/bin in my path,
> so I cd /sys/compile/MYSYSTEMNAME
> and /usr/bin/make
> it have nothing to do with problems with unexpected signal trapped by cc1
> I suppose?
> 
> > > most often it was 11 sometimes 10 rarely 5)
> > > Well, rerunning /usr/bin/make was helpful with times but I've
> > > gotr stuck with vfs_func.c or something like that: no matter
> > > how much I've re running make: signal 11 trapped.
> > > Well I'm running the 0412-SNAP distribution, still under 0322
> > > I have _the same problem_ as in the 0412 :-(
> > > And I can't roll back to 2.0-RELEASE because kvm_make or something like
> > > this coredumps (what is probably what should be expected but I was surprised
> > > ;-)
> > > So, the kernel hangs on the ncr detection :-(

Yeah, I found the exact point once.  My box isn't connected at the moment so
I can't point it out.  It is in the interrupt code, though.

> > 
> Now after successfully booting 0412SNAP kvm_mkdb still causes this printing
> appearing on the console:
> 
> May 29 11:24:11 relay /kernel: pid 209: kvm_mkdb: uid 0: exited on signal 10
> Bus error (core dumped) 
> 
> > That was the exact sympton Boyd had, see my other email, on his system.
> > I wish you had said up front you where using the on board NCR 810 of
> > an ASUS PCI/I-486SP3G, it would have tripped my memory sooner that I
> > had been here before.
> > 
> I'm sorry: never knew which part would be essential for the
> trouble report.
> Thanx!
> Partially succeeded: 0412 boots at least. Strange: the system
> I used before was some VLB of unknown origin with SIMMS of unknown
> origin and it worked, now when I assembled the machine from parts 
> supplied by the well known producers it ain't working ;-)
> Ok here what it is:
> super tower case with 2 fans and 400 Watt PSU (nearly empty)
Big tower with less wattage.

> ASUS SP3G with 256k cache (that came with the board) and Intel-100Mhz DX4
> 	(to tell you truth we 've purchased Intel 100Mhz just to minimize
> 	dip switching on the ASUS ;-)
Ditto but AMD 486 DX 40 Mhz running at 33Mhz
> two 16MB NEC SIMMS (with parity sure thing)
Two 8 meg simms Rod sold me.

> Then came SMC Ultra 8013TPC
> and Cirrus Logic (some ISA model) SVGA board.
Asus PCI Video, yanked, no difference.

> AST4 board & Cronyx.
> Well all four ISA slots are occupied and no PCI slots are occupied

SMC 8013.  Yanked, no difference.
Gravis UlraMAX.  Yanked, no difference.

I got it to work once but not sure what I did.  I should yank the board out
and populate it slowly.  Now really eager to do it though.
> 
> AGL
> > 
> > -- 
> > Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
> > Accurate Automation Company                   Custom computers for FreeBSD
> > 
> 

At least I'm not crazy.  Thanks.
-- 
_______________________________________________________________________

 Boyd Faulkner                                  faulkner@isd.tandem.com 
_______________________________________________________________________



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