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From: mcgurrin@MITRE.ARPA.UUCP
Newsgroups: comp.sys.apple
Subject: //GS serial interface question
Message-ID: <8705111923.AA13769@mitre.ARPA>
Date: Mon, 11-May-87 15:23:15 EDT
Article-I.D.: mitre.8705111923.AA13769
Posted: Mon May 11 15:23:15 1987
Date-Received: Thu, 14-May-87 01:25:32 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The MITRE Corp., Washington, D.C.
Lines: 7

The Technical Intro to the //GS states that the serial ports are RS-422, 
configured to be compatible with RS-232.  Can someone explain to me how
this works, since 422 requires balanced signals while 232 does not?
Does it use normally unused pins of a 232 connection for the opposite 
direction of balanced lines when connected  to a 422 device?  How does the
//GS interface compare with the new EIA-530 standard?  What are the differences?
Any information on this or leads would be greatly appreciated.  Thanks!