Date: Sun, 28 Mar 1999 11:11:58 -0600 (CST) From: Richard Wackerbarth <rkw@dataplex.net> To: Darren Reed <avalon@coombs.anu.edu.au> Cc: hackers@FreeBSD.ORG Subject: Re: another ufs panic.. Message-ID: <Pine.BSF.4.05.9903281102430.53841-100000@nomad.dataplex.net> In-Reply-To: <199903281641.CAA21476@cheops.anu.edu.au>
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On Mon, 29 Mar 1999, Darren Reed wrote: > In some mail from Richard Wackerbarth, sie said: > > > > On Mon, 29 Mar 1999, Darren Reed wrote: > > > > And... lastly, with a possibly SCSI-related problem - be sure termination > > > > is right. Don't trust the 2940UW auto-termination, do it yourself. > > > > > > FWIW, I had a lot of trouble getting termination "right" - I've internal > > > 8bit, external 8bit and internal 16bit SCSI devices > > > > I believe that you still don't have it "right" if you are attempting to > > use all three cables at the same time. > > > > You are allowed only TWO terminators and there MUST be one at the END of > > EACH cable. > > well, that's just it, it's only "two" cables. the internal cable connects > the external connector with internal devices. or is that what you're > referring to here as not being supported ? Where it connects is important. If the internal cable goes from the controller past the internal devices and the end of it is extented through the case to the external cable, that is OK. However, I think that you have a "three legged star". The controller sits at the center and the cables extend out in three directions. The key is how many ENDS of cables are there. The external cable will clearly be one. The 16 bit cable is another. And the internal 8bit is a third. The only LEGAL configuration is to leave at least one of them unused. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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