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Received: by minnie.vk1xwt.ampr.org with NNTP id AA550 ; Thu, 04 Feb 93 23:00:27 EST Path: sserve!manuel.anu.edu.au!munnari.oz.au!spool.mu.edu!enterpoop.mit.edu!senator-bedfellow.mit.edu!athena.mit.edu!raeburn From: raeburn@athena.mit.edu (Ken Raeburn) Newsgroups: comp.unix.bsd Subject: Re: Adaptec 1542/386BSD compatible CD-ROM drives Date: 3 Feb 1993 19:16:05 GMT Organization: Cygnus Support, Cambridge MA Lines: 43 Message-ID: <RAEBURN.93Feb3141604@cambridge.cygnus.com> References: <19581@smoke.brl.mil> <1993Jan21.173539.8390@prepress.com> <BLYMN.93Jan25175958@mallee.awadi.com.au> NNTP-Posting-Host: cambridge.cygnus.com In-reply-to: blymn@awadi.com.au's message of 25 Jan 93 17:59:58 In article <BLYMN.93Jan25175958@mallee.awadi.com.au> blymn@awadi.com.au (Brett Lymn) writes: >>>>> On Thu, 21 Jan 1993 17:35:39 GMT, bob@prepress.com (Robert Crowe) said: R> In article <19581@smoke.brl.mil> lesh@smoke.brl.mil (Steve Lesh) writes: > > Any recommendations of CD-ROM drives which work with the Adaptec 1542 >under 386BSD 0.1 would be appreciated. (I've already tried one "SCSI" drive >which the Adaptec firmware -3.10- would not recognize -- an NEC CDR-25BJ.) I'm having problems with the NEC CDR-36. You don't describe just how yours fails, but here's what I see: When the driver probes the unit number for the CD ROM drive, the red activity light on the board and the busy light on the drive both come on, and stay on for over a minute. The software is not able to access the drive. This happens with 386BSD (with Julian's driver), with the Adaptec DOS software, and with the Adaptec's ROM routines. The NEC tech support people said it sounded like a termination problem, but I've tried lots of different things to deal with that, including adding a pass-through terminator, to no avail. (They also did say it talks standard SCSI-1.) The drive works fine under DOS with the Trantor T130 SCSI host adapter and software that I got with it, but I haven't checked to see if Julian's drivers work with that card. I've gotten the impression that the Trantor card does 8-bit transfers only, so I'd prefer to use the Adaptec. On the other hand, it seems this drive wants synchronous transfer negotiation and parity checking disabled (or that's the impression I got from the NEC guy), so maybe I should leave it on its own card. I have both disabled on my Adaptec card currently. I tried it on a sparcstation at work, and though it did manage to print the device id string, it reported lots of parity errors. I don't know if it's possible to turn the parity checking off. I'm going to talk to a local service center and see if I can get them to make sure it works with the Adaptec before returning it to me... -- ~ Ken Raeburn preferred: raeburn@cygnus.com also: raeburn@mit.edu ~ ~ Cygnus Support, One Kendall Square, Cambridge MA 02139 USA ~ 617-494-1040 ~