Hi - What CSR do you have the TC13 set for? The Boot ROM did it's job of reading in the 512 byte boot record and transferring control to location 0. The bootblock relocates itself to 48kb which is 0140000. I don't think the problem is cabling in this case. If you have another system that you can view the sources with the file you really need to have in front of you at this time is /usr/src/sys/pdpstand/mtboot.s The section of code where the system is halting (with added octal offsets) is: 0262 bne ctlerr 0264 bit $!1000,hter(csr) / any drive errs except HTER_FCE 0272 beq bumpaddr / no, go bump address ctlerr: 0274 halt The label 'ctlerr' is shared but it indicates that a controller error was encountered out of the 'tmtscom' common logic (shared between the MT and MS drivers): tmtscom: bit $100200,(csr) / error or ready? beq tmtscom / neither, keep looking bmi ctlerr / error - go halt The thing to try is when the system halts looking at the registers (R0 thru R5) _and_ the tape controller registers (starting at 0172520). It's also possible to look at the command buffer being presented to the controller by looking at offset 0460 (0140460). Not sure how useful that will be though. It might be possible to single step the processor starting at location 0 as long as R0 and R1 are set up correctly (R0 has the unit number and R1 the control register address which is 172522 for MS and MT devices). Steven Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) id JAA16654 for pups-liszt; Tue, 22 Dec 1998 09:18:17 +1100 (EST) Received: from carp.gbr.epa.gov (carp.gbr.epa.gov [204.46.159.110]) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) with ESMTP id JAA16649 for <pups(a)minnie.cs.adfa.oz.au>au>; Tue, 22 Dec 1998 09:18:08 +1100 (EST) Received: (from mjenkins@localhost) by carp.gbr.epa.gov (8.8.8/8.8.8) id QAA15443 for pups(a)minnie.cs.adfa.oz.au; Mon, 21 Dec 1998 16:17:50 -0600 (CST) (envelope-from mjenkins) Date: Mon, 21 Dec 1998 16:17:50 -0600 (CST) From: Mike Jenkins <mjenkins(a)carp.gbr.epa.gov> Message-Id: <199812212217.QAA15443(a)carp.gbr.epa.gov> To: pups(a)minnie.cs.adfa.oz.au Subject: Re: Unix History Diagram In-Reply-To: <199812142344.KAA05594(a)henry.cs.adfa.oz.au> Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk There is a diagram at The Internet Operating System Counter which is at http://www.hzo.cubenet.de/ioscount/. Take the "Unix networking" link. It was published in iX, a German magazine. Mike Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) id NAA17356 for pups-liszt; Tue, 22 Dec 1998 13:44:57 +1100 (EST) Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) with ESMTP id NAA17348 for <pups(a)minnie.cs.adfa.oz.au>au>; Tue, 22 Dec 1998 13:44:47 +1100 (EST) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id NAA01429; Tue, 22 Dec 1998 13:14:15 +1030 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.1/8.9.0) id NAA08618; Tue, 22 Dec 1998 13:14:16 +1030 (CST) Message-ID: <19981222131415.A85005(a)freebie.lemis.com> Date: Tue, 22 Dec 1998 13:14:15 +1030 From: Greg Lehey <grog(a)lemis.com> To: Mike Jenkins <mjenkins(a)carp.gbr.epa.gov>ov>, pups(a)minnie.cs.adfa.oz.au Subject: Re: Unix History Diagram References: <199812142344.KAA05594(a)henry.cs.adfa.oz.au> <199812212217.QAA15443(a)carp.gbr.epa.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <199812212217.QAA15443(a)carp.gbr.epa.gov>ov>; from Mike Jenkins on Mon, Dec 21, 1998 at 04:17:50PM -0600 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk On Monday, 21 December 1998 at 16:17:50 -0600, Mike Jenkins wrote: As I feared when I heard it came from iX, it's *very* inaccurate. For example, it claims that 1BSD was derived from 32/V (should have been 3BSD), derives 1BSD from 1BSD and 4.1BSD (should be 4BSD) from the second 1BSD (should be 3BSD), derives ``BSDI'' from 4.3BSD, when in fact BSD/OS is derived from 4.4BSD, doesn't mention System V(.1) or System V.3, etc. And all this is OS code, not networking code. Greg -- See complete headers for address, home page and phone numbers finger grog(a)lemis.com for PGP public key Received: (from major@localhost) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) id GAA21472 for pups-liszt; Wed, 23 Dec 1998 06:06:48 +1100 (EST) Received: from mail.calweb.com (mail.calweb.com [208.131.56.12]) by minnie.cs.adfa.edu.au (8.9.1/8.9.1) with ESMTP id GAA21466 for <pups(a)minnie.cs.adfa.oz.au>au>; Wed, 23 Dec 1998 06:06:34 +1100 (EST) Received: by mail.calweb.com (8.8.6/8.8.6) with SMTP id LAA20458 for <pups(a)minnie.cs.adfa.oz.au>au>; Tue, 22 Dec 1998 11:06:23 -0800 (PST) X-SMTP: helo rgc from rickgc(a)calweb.com server @12.22.0.83 ip 12.22.0.83 Message-Id: <3.0.32.19981222111606.008f4450(a)pop.calweb.com> X-Sender: rickgc(a)pop.calweb.com X-Mailer: Windows Eudora Pro Version 3.0 (32) Date: Tue, 22 Dec 1998 11:16:49 -0800 To: pups(a)minnie.cs.adfa.oz.au (Unix Heritage Society) From: Rick Copeland <rickgc(a)calweb.com> Subject: Emulex TU13 Dip Switch Layout? Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-pups(a)minnie.cs.adfa.edu.au Precedence: bulk Dear PUPS List, I have an Emulex TU13 tape drive interface. Does anyone on the list have the dip switch layout so that I can program them properly? Thank You, Merry Christmas, Rick Copeland