Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!mcsun!i2unix!inria!bull.bull.fr!bull!Patrick.Hayes From: Patrick.Hayes@cediag.bull.fr (Patrick Hayes) Newsgroups: comp.sys.mac.hardware Subject: Re: Need opinions on maxed-out SCSI bus Message-ID: Date: 27 Nov 90 13:38:12 GMT References: <1990Nov26.172348.16604@phri.nyu.edu> Sender: news@bull.bull.fr Organization: Cediag Bull S.A., Louveciennes, France Lines: 33 In-reply-to: roy@alanine.phri.nyu.edu's message of 26 Nov 90 17:23:48 GMT Well, my scsi bus isn't maxed out yet, but I do have a word or two to say. My A/UX Mac II has: Scid 0: Micropolis 1578 external 330 Mbyte HD Scid 1: Apple Quantum internal80 Mbyte HD Scid 2: Microtech Syquest 44 Mbyte removable Scid 3: Archive 60EP/150EP DC600 (A/UX only) Scid 4: Apple CD-ROM I had no end of problems once I connected the CD-ROM, until I opened it up and noticed that Apple had miscabled the connectors. Normally cabled SCSI drives have cables that go from Scsi in -> Scsi device -> Scsi out. The Apple drive violates the Scsi bus by using Scsi in -> Scsi out -> Scsi device. Once I cut off one the connectors by cutting the cable between the two connectors and turning the CD-ROM into an endpoint-only device I stopped having corrupted filesystems. When I find someone in france selling 50 point ribbon cable, I'll try to fix the drive and turn it back into a device I can put anywhere on the bus. Given my experience with the Apple CD-ROM, I can't recommend it to anyone else until Apple recables them correctly. I'm fairly angry at Apple for selling products which are as badly designed as this, If anyone could justify this behavior, other than saving 2 cents, I'd like to hear it. Pat -- +-------------------------------+-----------------------------------------+ | Patrick Hayes | EMail : Patrick.Hayes@cediag.bull.fr | | BULL CEDIAG | or hayes@bull.fr | | 68, Route de Versailles | or ...!mcvax!inria!bullfr!hayes | | F-78430 Louveciennes FRANCE | Tel : (33 1) 39 02 49 55 | +-------------------------------+-----------------------------------------+