Newsgroups: comp.sys.apple2 Path: news.weeg.uiowa.edu!news.uiowa.edu!uunet!MathWorks.Com!europa.eng.gtefsd.com!howland.reston.ans.net!gatech!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!unixg.ubc.ca!quartz.ucs.ualberta.ca!acs.ucalgary.ca!cpsc.ucalgary.ca!debug!griffin!dockery From: dockery@griffin.cuc.ab.ca (Sean Dockery) Subject: Re: Apple //C Serial Port Diagram Message-ID: Organization: Griffin Software Development References: Date: Mon, 6 Jun 1994 09:37:44 GMT Lines: 35 wwggww@mixcom.com wrote the following article: | Does someone out there have the pinouts for the Apple //c serial port? I | need to put together a null modem cable so I can transfer some old files | off it up to a pc. I've seen this so often that it is a wonder why it isn't archived somewhere. | Any help would be appreciated! View from back of the computer: 5 1 4 2 3 1 - DTR (RTS) output 2 - TD 3 - GND 4 - RD 5 - DSR (DCD) input How to build a pseudo-HWHS cable: Port Modem (DB-25) 1 --> 4 (RTS), short to 20 (DTR) 2 --> 2 (TD) 3 --> 7 (GND) 4 --> 3 (RD) 5 --> 6 (DSR) -- Sean Dockery | Tickle us, do we not laugh? Griffin Software Development Group | Prick us, do we not bleed? dockery@griffin.cuc.ab.ca | Wrong us, shall we not revenge?