Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!npeer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail From: Kurt Nowak Newsgroups: comp.sys.apollo Subject: Re: Booting an Apollo with the external scsi connection Date: Tue, 20 Mar 2012 17:02:47 -0700 (PDT) Organization: http://groups.google.com Lines: 44 Message-ID: <23503207.391.1332288167666.JavaMail.geo-discussion-forums@yneo2> References: <24461015.1102.1331948792238.JavaMail.geo-discussion-forums@pbcql4> <4f661637$0$6625$9b4e6d93@newsspool2.arcor-online.net> <9706892.2648.1332100983335.JavaMail.geo-discussion-forums@pbvs10> <4f664fcd$0$6640$9b4e6d93@newsspool2.arcor-online.net> <33243868.1926.1332177223863.JavaMail.geo-discussion-forums@ynbo9> <3775713.1973.1332187395122.JavaMail.geo-discussion-forums@pbcju1> <19327433.5528.1332193357924.JavaMail.geo-discussion-forums@ynne2> <5804bd2a-df2c-4873-9b48-0a510c3e9778@r27g2000vbn.googlegroups.com> <4f68df24$0$6622$9b4e6d93@newsspool2.arcor-online.net> NNTP-Posting-Host: 72.207.125.90 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1332288285 14672 127.0.0.1 (21 Mar 2012 00:04:45 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Wed, 21 Mar 2012 00:04:45 +0000 (UTC) In-Reply-To: <4f68df24$0$6622$9b4e6d93@newsspool2.arcor-online.net> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=72.207.125.90; posting-account=fhPgOgoAAAAh0HKrCej6k-q41rN0jMVe User-Agent: G2/1.0 X-Received-Bytes: 3994 Xref: csiph.com comp.sys.apollo:97 On Tuesday, March 20, 2012 12:48:52 PM UTC-7, Lothar Paltins wrote: > Hi Vincenzo, >=20 > > But connectors seems too big for the small holes in the back of ATR car= ds >=20 > you need a 7W2 male D-Type connector with 2 coaxial contacts. I've also > planned to make an additional adapter and found the needed parts at > www.reichelt.de: >=20 > Artikelnummer Bezeichnung Anzahl Euro > --------------------------------------------------------------- > MIX-STG CO D-SUB-Einzelkon., Koax, Stecker, 50 O 2 5,80 > MIX-STG 7W2 D-SUB-Koax Stecker f. Mischbest=FCckung 1 1,35 > KAPPE 15PM D-SUB-Kappe f. 15-polig D-Sub, lange 1 0,21 > --------------------------------------------------------------- > 7,36 >=20 > Additionally, two short pieces of a thin coaxial cable and two female > BNC connectors for the other end of the cables are required. I think, > these parts should also be available from a dealer in Italy and all the > parts for one adapter should not cost much more than about 10 Euros. >=20 > Kurt did send me some cut off connectors, but it will be difficult to > diasassemble the coaxial contacts and to reuse them. But there's one > interesting thing about these connectors. I've always thought, that the > 5 single contacts aren't used and are not connected. But there are wires > connected to two of these contacts. On the old 2-board ATR controller, > these pins are really not connected, but on the new 1-board ATR > controller they are. One of the contacts with the wires is connected to > GND and the other to +5V. It seems, that the other 3 contacts are also > connected on the board. Jim, do you know, what the purpose of these pins > are? AFAIK, there was no such thing like an active ATR hub or switch. > Maybe the 5V was used to control a relay in a wall plug. >=20 > Lothar > --=20 > Lothar Paltins =20 Yeah, I thought that was interesting too. I took some pics before I sent th= em to you... see picture 3. https://plus.google.com/photos/112158735340501596756/albums/572213320661243= 3617