Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!lll-crg!topaz!ll-xn!mit-amt!mit-eddie!genrad!decvax!tektronix!reed!psu-cs!psueea!waldref From: waldref@psueea.UUCP (Greg Waldref) Newsgroups: net.micro.pc Subject: Re: Need pinouts for IBM PC[AT] serial/parallel Message-ID: <258@psueea.UUCP> Date: Tue, 23-Sep-86 02:21:32 EDT Article-I.D.: psueea.258 Posted: Tue Sep 23 02:21:32 1986 Date-Received: Wed, 24-Sep-86 05:19:10 EDT References: <511@bucsb.bu.edu.UUCP> Reply-To: waldref@psueea.UUCP (Greg Waldref) Organization: Dept. of Electrical Engineering, Portland State University; Portland OR Lines: 21 Here are the pin-outs for the serial (db-9) connector and how they should be connected for use with a modem. I can't find the pin-out for parallel (its' here some place!). If you don't get it send me mail and I'll find the info. db-9 name db-25 1 cd 8 2 td 3 3 rd 2 4 dtr 20 5 sg 7 6 dsr 6 7 rts 4 8 cts 5 9 ri 22 Yes, 2 and 3 do get reverced for a non-nul modem cable. I hope I got all the numbers right (they do match what I have). greg ...tektronx!psu-cs!psueea!waldref