From owner-freebsd-hackers Tue Apr 15 14:49:33 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id OAA13749 for hackers-outgoing; Tue, 15 Apr 1997 14:49:33 -0700 (PDT) Received: from iafnl.es.iaf.nl (uucp@iafnl.es.iaf.nl [195.108.17.20]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id OAA13742 for ; Tue, 15 Apr 1997 14:49:27 -0700 (PDT) Received: by iafnl.es.iaf.nl with UUCP id AA30498 (5.67b/IDA-1.5 for FreeBSD-Hackers@freebsd.org); Tue, 15 Apr 1997 23:48:34 +0200 Received: (from wilko@localhost) by yedi.iaf.nl (8.7.5/8.6.12) id TAA00874; Tue, 15 Apr 1997 19:21:32 +0200 (MET DST) From: Wilko Bulte Message-Id: <199704151721.TAA00874@yedi.iaf.nl> Subject: Re: floppy disks To: imp@village.org (Warner Losh) Date: Tue, 15 Apr 1997 19:21:32 +0200 (MET DST) Cc: msmith@atrad.adelaide.edu.au, chuckr@Journey2.mat.net, FreeBSD-Hackers@freebsd.org In-Reply-To: from "Warner Losh" at Apr 14, 97 02:39:18 pm X-Mailer: ELM [version 2.4 PL24 ME8a] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Warner Losh wrote... > > In message <199704141556.BAA28512@genesis.atrad.adelaide.edu.au> Michael Smith writes: > : Hmm, my memory is a tad rusty here, but there was a time when nobody > : was agreeing on whether it was pin 2 or 32 that was the diskchange > : signal. Some vendors (eg. Atari) used to read the write-protect > : signal instead (and got tripped up by drive's that masked it with the > : disk-present sensor), but I would start by checking that pins 2 and 32 > : make it from the drive back to your controller, and if the floppy > : drive(s) are more than a year or two old, see if there's a "DC" jumper > : you can play with on them. > > That would be pin 34. Older disk drives used this for READY, while > newer ones use this for disk change. The only reason I know this has > to do with an obscure piece of computing history named the DEC Rainbow > 100b and RX-50 disk drives and trying to find 3.5" floppies that would > work with the controller in question. I have a spare RX50 ;-) Along with a PDP11/73 with Unix on it.. Wilko _ ____________________________________________________________________ | / o / / _ Bulte email: wilko@yedi.iaf.nl - Arnhem, The Netherlands |/|/ / / /( (_) Do, or do not. There is no 'try' - Yoda --------------------------------------------------------------------------