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From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.hardware
Subject: Re: 16Mhz Mac Classic?
Message-ID: <1990Dec11.030108.14247@eng.umd.edu>
Date: 11 Dec 90 03:01:08 GMT
References: <1990Dec10.031031.24801@ux1.cso.uiuc.edu> <1990Dec10.192355.7500@umiami.ir.miami.edu> <4278@exodus.Eng.Sun.COM>
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In article <4278@exodus.Eng.Sun.COM> fiddler@concertina.Eng.Sun.COM (Steve Hix) writes:
>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.
>> 
>> And I mean that while they helped establish SCSI as a stnadard, they shouldn't
>> ignore others so entrenched as RS-232C.
>
>They didn't.
>
>The serial-port protocol on the Mac is RS-422.  I think I remember that RS-232C
>is a subset of it, or at worst can be handled from the port.
>
>Note that the ImageWriter II uses an RS-232C connection.  Worked that way on
>Apple//'s and even ///'s.  Straight plug-in on the Mac from day one.
>
>(Hope the numbers are right...but then, what do I know?  I just write about
>software.)
>

Jason Gross has parallel confused with RS-232C.
Though I wish Apple's serial ports had one more output handshake.
--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
     .sig under construction, like the rest of this campus.