Date: Thu, 15 May 2008 08:56:15 +0100 From: Dieter <freebsd@sopwith.solgatos.com> To: "Aryeh M. Friedman" <aryeh.friedman@gmail.com> Cc: freebsd-hardware@freebsd.org Subject: Re: software null modems Message-ID: <200805151556.PAA05959@sopwith.solgatos.com> In-Reply-To: Your message of "Thu, 15 May 2008 09:19:49 EDT." <482C3875.1050509@gmail.com>
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> I need a null modem and all I can find is straight through db25 cables > and I want to avoid the paper clip trick if I can. So is there any way > to create a null modem in software only? Google can find lots of them, 25 pin or 9 pin, dongle or cable, ... http://www.google.com/products?as_q=&num=30&scoring=p&btnG=Search+Products&as_epq=null+modem&as_oq=&as_eq=&price1=&price2=&as_occt=any&show=dd&safe=active Products Results 1 - 30 of about 4,711 for "null modem" $1.68 and up. There is more than one null modem pinout, be sure to get the one you need. For a software solution to work, the pins would need to be bidirectional. I doubt that anyone makes a RS-232 chip with bidirectional pins.
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