Path: utzoo!attcan!uunet!ogicse!dali.cs.montana.edu!milton!whit
From: whit@milton.u.washington.edu (John Whitmore)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Personal LaserWriter NT questions
Summary: two-unit network can use straight null modem cable
Message-ID: <8243@milton.u.washington.edu>
Date: 28 Sep 90 05:02:23 GMT
References: <57584@wlbr.IMSD.CONTEL.COM> <24032@dartvax.Dartmouth.EDU>
Organization: University of Washington, Seattle
Lines: 20

In article <24032@dartvax.Dartmouth.EDU> boomer@eleazar.dartmouth.edu (Rich Akerboom) writes:
>
>   ... The normal mac to lw
>connection is via a Localtalk NETWORK, not a serial cable. Not sure if just 
>using the single DIN-8 cable will work, since I don't know if pins 2&3 need 
>to be reversed (one man's send is another's receive). But you can get much
>greater speeds with Localtalk (230.4 Kb/s if i remember correctly) than with
>a serial connection (is 19.2 Kb/s max?). To make the network, you need the 2
>boxes and the connector cable, though I'm not sure why it needs to be 2 meters
>long.

	In fact, the network software works fine with a simple null modem
style cable.  It runs at full speed, claims (in the CHOOSER menu) to
be a connected AppleTalk network, and everything.
	The boxes are really only isolation transformers with a couple
of resistors to limit bus loading when a connected Mac is turned off.
Lots of small systems are connected with null-modem style wiring.  It
works.

		John Whitmore