Newsgroups: comp.sys.next
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: RS-423 on new machines -- What is it?
Message-ID: <1990Sep26.223003.14312@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <688@happym.UUCP>
Date: Wed, 26 Sep 90 22:30:03 GMT

In article <688@happym.UUCP> irv@happym.UUCP (Irving [h] Wolfe) writes:
>What's RS-423?  I've used RS-232 for nearby serial devices and RS-422 for
>terminals 700 feet from the computer, but what is this RS-423 that the new
>NeXT machines have, and what can it be interfaced to?

RS-423 is sort of a sexier RS-232, easier to deal with electrically and
capable of rather higher speeds than a standard-conforming RS-232 (many
RS-232 implementations play fast and loose with the standard).  It is
generally compatible with RS-232 if you don't push hard (no long cables,
no K-Mart-price PC-market devices that save $1.95 by implementing only
a vague approximation to RS-232, no connectors made out of bobby pins).
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