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: Attaching an 8" floppy drive to DN3/4XXX machine Date: Mon, 9 Apr 2012 12:04:38 -0700 (PDT) Organization: http://groups.google.com Lines: 30 Message-ID: <16440998.599.1333998278948.JavaMail.geo-discussion-forums@ynvv7> References: <31479178.2239.1333644744040.JavaMail.geo-discussion-forums@yncd8> <616fe00f-90b1-4cbb-a902-405aa351d894@j15g2000vbt.googlegroups.com> NNTP-Posting-Host: 12.2.142.12 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1333998279 32564 127.0.0.1 (9 Apr 2012 19:04:39 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Mon, 9 Apr 2012 19:04:39 +0000 (UTC) In-Reply-To: <616fe00f-90b1-4cbb-a902-405aa351d894@j15g2000vbt.googlegroups.com> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=12.2.142.12; posting-account=fhPgOgoAAAAh0HKrCej6k-q41rN0jMVe User-Agent: G2/1.0 X-Received-Bytes: 2876 Xref: csiph.com comp.sys.apollo:135 On Friday, April 6, 2012 8:04:00 PM UTC-7, Jim Rees wrote: > On Apr 5, 12:52=A0pm, Kurt Nowak wrote: > > Hey Guys... > > > > So I have a bunch of 8" floppies that I would like to get the data Apol= lo off of. The problem is that my only 8" drive is attached to a dead DN420= . Would a "newer" say DN3500 accept this floppy drive (temporarily) so I ca= n get the data? I can use either a machine running SR10 or SR9.7.5... >=20 > Not without a whole lot of work. The floppy controller in the dn3500 > has a 34 pin sa450 connector for a 3 or 5 inch drive. The 8 inch drive > has a 50 pin sa850 connector. The timing is the same, they both spin > at the same speed, and some of the signals are the same, but there are > some extra signals on the 8 inch. >=20 > I once did the opposite of this, attached a 5 inch drive to a dn330. > It was not easy. And what you're trying to do will be harder. But I > can send you my notes if you want to give it a shot. >=20 > Another approach would be to find some other non-Apollo system (CP/M?) > that already has an 8 inch floppy drive, convince it to read the 1K > Apollo sectors, image the floppies, then read them on the emulator. Thanks, Jim. That does sound like more work than I was willing to put in. I= just wanted to test the waters and see if one of you knew what I was getti= ng myself into before I start pulling hardware out of machines... I was planning on giving my DN420 away (hopefully for a little cash) to Bea= r at typewritten...Perhaps he can get the machine to work and at that point= maybe he can extract the data off the floppies for me. We'll see...not a b= ig rush on this one.