From owner-aic7xxx Wed May 27 10:33:45 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id KAA15289 for aic7xxx-outgoing; Wed, 27 May 1998 10:33:45 -0700 (PDT) (envelope-from owner-aic7xxx@FreeBSD.ORG) Received: from einstein.phy.duke.edu (root@einstein.phy.duke.edu [152.3.182.4]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id KAA15216 for ; Wed, 27 May 1998 10:33:00 -0700 (PDT) (envelope-from rgb@phy.duke.edu) Received: from ganesh.phy.duke.edu (rgb@ganesh.phy.duke.edu [152.3.183.52]) by einstein.phy.duke.edu (8.8.8/8.8.8) with ESMTP id NAA25638; Wed, 27 May 1998 13:32:50 -0400 (EDT) Received: from localhost (rgb@localhost) by ganesh.phy.duke.edu (8.8.5/8.8.5) with SMTP id NAA06013; Wed, 27 May 1998 13:32:04 -0400 X-Authentication-Warning: ganesh.phy.duke.edu: rgb owned process doing -bs Date: Wed, 27 May 1998 13:32:04 -0400 (EDT) From: "Robert G. Brown" To: OLK cc: aic7xxx@FreeBSD.ORG Subject: Re: Adaptec termination problem... In-Reply-To: <3566E7F9.7765FD96@online-club.de> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-aic7xxx@FreeBSD.ORG Precedence: bulk On Sat, 23 May 1998, OLK wrote: > Try 2xIBM+1xConner+CDROM with AHA-2940 and you'll see only one > combination > working : > IBM=ID0,IBM=ID1,CDROM=ID2,Conner=ID3 or higher and Terminated. > Chances are 99.9%, that all other combinations especially with one > terminated IBM-HD and other(IBM) not, will fail. > Rule of Thumb: Adaptec+IBM's+Whatever --> Desaster Gee, this is really interesting. In the sense of the Chinese curse, of course. Does this mean that "Internal, jumpered termination doesn't work on IBM drives" even if they are the only drive on a given SCSI branch? What about external termination? If you run a computer store, you presumably have tried this -- do they have terminators that plug onto the ends of those nifty internal ribbon cables? rgb Robert G. Brown http://www.phy.duke.edu/~rgb/ Duke University Dept. of Physics, Box 90305 Durham, N.C. 27708-0305 Phone: 1-919-660-2567 Fax: 919-660-2525 email:rgb@phy.duke.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message