Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!rochester!pt!cadre!pitt!winfree!bdale From: bdale@winfree.UUCP (Bdale Garbee) Newsgroups: comp.sys.misc Subject: Re: Cheap external floppy for Toshiba T1100+ (and T3100?) Message-ID: <66@winfree.UUCP> Date: Mon, 13-Jul-87 02:58:16 EDT Article-I.D.: winfree.66 Posted: Mon Jul 13 02:58:16 1987 Date-Received: Tue, 14-Jul-87 06:29:08 EDT References: <8707030732.a029212@Louie.UDEL.EDU> <425@psu-cs.UUCP> <17392@amdcad.AMD.COM> Sender: bdale@winfree.UUCP Reply-To: bdale@winfree.UUCP (Bdale Garbee) Distribution: world Organization: Bdale's Berkeley Box, Colorado Springs Lines: 49 In article <17392@amdcad.AMD.COM> rpw3@amdcad.UUCP (Rob Warnock) writes: >Unfortunately, Toshiba doesn't document the pinouts on the 25-pin connector >on the back, the one that's shared between the external floppy (can be either >disk "A" or "B") and the parallel printer. So I engaged in a little electrical >sleuthing, and figured it out the hard way Wrong. It just isn't in the manuals that come with the box. Would you give a software jock connector pinouts? That's *DANGEROUS*! Toshiba does run a customer support BBS at 1-714-837-4408, 1200 baud only. I got the number by calling the 800 voice number and asking a techie-type question. There is a file on the board called 3100-ibm.txt, which docs the cable in question, along with files that doc all the other connectors. Sorry you went to so much trouble before you asked! Here's the file, I haven't bothered to check your work Rob: 1100+ or 3100 to IBM Floppy Disk Male DB-25 to 34 pin Card Edge connector 1 33 & 34 2 8 3 26 4 28 5 30 6 to 9 nc 10 12 11 16 12 22 13 24 14 nc 15 32 16 18 17 20 18 to 25 All odd pins >You need a convenient way to scramble-wire the 25-pin DB-25 on the back >of the T1100+ to the 34-pin PC edge-connector on the floppy. I just crimped ribbon cable into an edge connector, flared the other end, and soldered the individual wires to the tabs of a solder-cup style DB25. Works great with a shell around the DB25 for strain relief. Has been in use for months... (how did you think I got Minix on the Toshiba in the first place!!) -- Bdale Garbee, N3EUA phone: 303/593-9828 h, 303/590-2868 w uucp: {bellcore,crash,hp-lsd,hpcsma,ncc,pitt,usafa,vixie}!winfree!bdale fido: sysop of 128/19 packet: n3eua @ k0hoa, Colorado Springs