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Date: Mon, 23 Feb 1998 20:38:07 -0800 From: Brendan Miller <brmiller@wco.com> To: Jeff Collins <collinsj@ece.ucdavis.edu> Cc: linux-scsi@vger.rutgers.edu Reply-To: Brendan Miller <brmiller@wco.com> In-Reply-To: <Pine.HPP.3.95.980223103151.6585C-100000@orwell.ece.ucdavis.edu>; from Jeff Collins on Mon, Feb 23, 1998 at 10:37:01AM -0800 On Mon, Feb 23, 1998 at 10:37:01AM -0800, Jeff Collins wrote: > On Sun, 22 Feb 1998, Brendan Miller wrote: > > > # ID:0 Vendor: SEAGATE Model: ST31230N Rev: 0170 > > # ID:1 Vendor: QUANTUM Model: XP34550W Rev: LXY4 > > # ID:2 Vendor: HP Model: C3725S Rev: 6039 > > # ID:4 Vendor: TOSHIBA Model: CD-ROM XM-5701TA Rev: 0167 > > # ID:5 Vendor: IOMEGA Model: ZIP 100 Rev: D.09 > > > > The Quantum is the only wide device, is connected to the 68pin header on > > the Buslogic, and is terminated. All the other drives are connected to > > the internal 50pin header in this order: CD-ROM, Seagate, HP, ZIP. > > Termination is only on the ZIP. > > I was having somewhat similar problems when I attempted to add a CDROM > burner and a SCSI tape drive to my system (a Buslogic 946 w/ 2 SCSI > disks). My problem turned out to be that I had been using passive > termination on one end of the bus. With only the 3 existing devices, I > didn't notice any problems. However, on trying to extend the bus, things > must have gotten out of spec and I started getting command timeouts and > the like. So, is your narrow bus passively (with resistors) or actively > (by jumpering to "enable termination") terminated? --jw I don't know--the ZIP drive has "Termination-On". It's a slide-switch. I don't know what kind of termination it provides. The other end of the narrow bus is the Buslogic card--supposedly, it "auto-terminates as necessary". Brendan Miller
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