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From: bdd@calmasd.Prime.COM (Brian Donahue)
Newsgroups: comp.protocols.misc
Subject: Info on RS-485, RS-422, etc.
Keywords: where found?
Message-ID: <417@calmasd.Prime.COM>
Date: 18 Jul 89 22:59:50 GMT
Reply-To: bdd@calmasd.Prime.COM (Brian Donahue)
Distribution: na
Organization: Calma - A Division of Prime
Lines: 22

My primary question is:
Where can I find official information on protocols such as RS-485,
RS-422, etc. 

Secondly:
How hard would it be to implement a simple network 
consisting of a bunch of "data-acquisition" micro-processors, (eg. 8088's,
68000's) all communicating with a PC or MacIntosh following these
protocols?  How hard would it be to implement the same using the
Mac's Appletalk?  EtherNet? TCP-IP?   Does any vendor sell a 
"data-acquisition board" that can plug in to a network?  (I know there
are ones that plug into a parallel bus, (eg IEEE-488), is there a 
cheap way to take a parallel signal & plug it into a LAN without
implementing it myself?)

Any pointers would be appreciated,
bd


-- 
Brian Donahue	   	Calma San Diego R&D
...{ucbvax|decvax}!sdcsvax!calmasd!bdd        bdd@calmasd.Prime.COM