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From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com>
Message-Id: <199506022015.NAA08345@gndrsh.aac.dev.com>
Subject: Re: quantum (DEC) grand prix (any objections?)
To: kuku@gilberto.physik.rwth-aachen.de
Date: Fri, 2 Jun 1995 13:15:53 -0700 (PDT)
Cc: FreeBSD-hackers@FreeBSD.Org (FreeBSD hackers)
In-Reply-To: <199506021950.VAA14052@gilberto.physik.rwth-aachen.de> from "Christoph Kukulies" at Jun 2, 95 09:50:24 pm
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> 
> > 
> > > 
> > > > 
> > > > >I'm about to buy a Quantum Grand Prix (4GB) SCSI disk today.
> > > > >Keen as always I'm expecting there will be no trouble connecting
> > > > >it to a 1.1.5.1 (AH1542A) system, will there be?
> > > > >Any caveats wrt connecting it to ncr 53810 (Asus SP3G) under 2.0-current?
> > > > >
> > > > 
> > > > It will not work on the NCR. I have no idea about the 1542, since I haven't
> > > > tried it, but a 1742 in Wcarchive had trouble with them.  The drives work
> > > > fine on any of the aic7xxx based cards with 2.0.5A.
> > > 
> > > 
> > > > --nyone knowing the reasons why it does not work on the NCR? I mean
> > > the on board NCR of the ASUS SP3G PCI board.
> > > 
> > > I will dare and buy this drive and I shall see. If all fails
> > > I'll connect it to my 1542CF.
> > 
> > IT WILL FAIL ON THE NCR 53C810!!!  I have already told you that!!!
> 
> You are right, it fails :-) I just verified it. Anyway, I now own this drive
> and now I want to run it. For the time being I will run it from
> a second AH1542CF I have in that system. I'm presently building the
> kernel to support aha0 also (had a customized one). 
> 
> Is it a problem with the NCR chip (meaning that it will never be able to run
> that drive) or is it a problem with the FreeBSD code?

I have not had a Grand Prix here to track that down.  It may infact
work just fine with the NCR ASPI drivers under DOS (all the other devices
I have had NCR failures with of this kind do infact run under DOS with
the ASPI drivers, so I suspect this one well too.)  If that is the
case it means we have a FreeBSD NCR sequencer bug that will have to
be found and fixed.


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