Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!julius.cs.uiuc.edu!psuvax1!hsdndev!husc6!endor!siegel
From: siegel@endor.uucp (Rich Siegel)
Newsgroups: comp.sys.mac.hardware
Subject: Re: 16Mhz Mac Classic?
Message-ID: <5012@husc6.harvard.edu>
Date: 11 Dec 90 02:55:15 GMT
References: <1990Dec10.031031.24801@ux1.cso.uiuc.edu> <1990Dec10.192355.7500@umiami.ir.miami.edu>
Sender: news@husc6.harvard.edu
Reply-To: siegel@endor.UUCP (Rich Siegel)
Organization: Symantec Language Products Group
Lines: 26

In article <1990Dec10.192355.7500@umiami.ir.miami.edu> gross@umiami.ir.miami.edu (Mondo) writes:

>Yeah, it seems silly that while Apple wants to join the rest of the
>world with all their ways of interconnection that they refuse to add
>something as basic as a RS-232C interface.

	Every Macintosh since the first one comes with two RS-422 ports, which
can be adapted to RS-232 with the proper cable. However, they were intelligent
enough to realize that they didn't need to use all 25 pins of the connector,
and given the space constraints, the original design team opted to use the
DB-9 (and later a DIN-8) for the connectors.

	Either port can be driven at up to 57.6Kbaud, and with proper 
programming of the driver, even faster (as in the case of AppleTalk,
which uses the serial port at 230.4Kbaud).

	It's hardly proprietary, though.

R.



 Rich Siegel	Symantec Languages Group  Internet: siegel@endor.harvard.edu

"...she's dressed in yellow, she says 'Hello, come sit next to me, you
fine fellow..."