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Re: Booting an Apollo with the external scsi connection

From	Kurt Nowak <kurt.m.nowak@gmail.com>
Newsgroups	comp.sys.apollo
Subject	Re: Booting an Apollo with the external scsi connection
Date	2012-03-19 10:13 -0700
Organization	http://groups.google.com
Message-ID	<33243868.1926.1332177223863.JavaMail.geo-discussion-forums@ynbo9> (permalink)
References	(1 earlier) <jk1i00$fg1$2@tdi.cu.mi.it> <4f661637$0$6625$9b4e6d93@newsspool2.arcor-online.net> <jk57sl$da3$1@tdi.cu.mi.it> <9706892.2648.1332100983335.JavaMail.geo-discussion-forums@pbvs10> <4f664fcd$0$6640$9b4e6d93@newsspool2.arcor-online.net>

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On Sunday, March 18, 2012 2:12:45 PM UTC-7, Lothar Paltins wrote:
> Hi Kurt,
> 
> the settings on T. Hunkler's site are correct, they correspond to the
> ones in the Technical Reference manual. You should leave jumper W10 in,
> it enables termination power to the bus. And if you don't have any
> internal devices connected to J8, then you should have both resistor
> networks Z1 and Z2 installed to terminate the bus at the controller
> side.
> 
> Lothar
> -- 
> Lothar Paltins                                        

Ok, I had success! You are correct, Lothar. Electrically the external connector is the same connection as the internal one. My problem was that I had my jumpers set incorrectly on my Archive Scorpion (60MB) tape drive. I had "ID0" and "CF0" jumpered where instead I needed to have CF0 and CF2 jumpered. I left all the SCSI "IDxs" unjumpered and it still worked. I didnt have any jumpers handy but I will try and jumper ID0 and see if it also still works, the next time I have a chance. I am still not sure what those  "CF" jumpers are for though. According to Sunshack, they discribe the 3 jumpers as controlling the "disconnect transfer size"

http://www.sunshack.org/data/sh/1.0/wcd00002/wcd0023a.htm

Vincenzo...Perhaps the IBM drive just wont work on an Apollo. You should get at least some chattering of the drive when you power up the Apollo. But hopefully its just a jumper issue.

My next test is to see if a Sun QIC 150 drive can be used to boot an Apollo. They seem to be much easier to find on the open market than QIC-11s. Its amazing how much people are asking for them on ebay...$100s... However I just boght a QIC-150 in a Sun 411 enclosure for $8! Of course you have to rebuild the capstan to ensure reliability.

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Thread

Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-16 18:46 -0700
  Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-17 08:28 +0000
    Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-18 18:07 +0100
      Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-18 18:00 +0000
        Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-18 13:03 -0700
          Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-18 22:12 +0100
            Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-19 10:13 -0700
              Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-19 19:32 +0000
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-19 13:03 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-19 20:08 +0000
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-19 14:42 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-19 23:28 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-19 17:42 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-20 07:56 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-20 06:11 -0700
                Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-20 20:48 +0100
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-20 17:02 -0700
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-21 07:23 -0700
                Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-21 20:51 +0100
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-21 15:04 -0700
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-20 10:24 -0700
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-19 17:50 -0700
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-20 12:15 -0700
                Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-20 21:02 +0100
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-22 19:08 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-23 07:17 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-23 05:41 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-24 22:38 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-24 18:13 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-25 10:14 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-25 06:53 -0700
                Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-23 21:32 +0100
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-23 21:05 +0000
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-23 15:01 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-24 08:11 +0000
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-24 13:18 +0000
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-24 16:54 +0000
                Re: Booting an Apollo with the external scsi connection Kurt Nowak <kurt.m.nowak@gmail.com> - 2012-03-24 11:44 -0700
                Re: Booting an Apollo with the external scsi connection james@forluna.co.uk - 2012-03-27 13:42 -0700
                Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-27 21:08 +0000
                Re: Booting an Apollo with the external scsi connection Jim Rees <jim.rees@rees.org> - 2012-03-28 07:10 -0700
                Re: Booting an Apollo with the external scsi connection Lothar Paltins <lptmp01@arcor.de> - 2012-03-24 20:34 +0100
          Re: Booting an Apollo with the external scsi connection supervinx <nessuno@libero.it> - 2012-03-18 23:40 +0000

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