Subject: Re: Apple IIc+ Monitor
From: supertimer@aol.com (Supertimer)
Newsgroups: comp.sys.apple2
Lines: 32
NNTP-Posting-Host: ladder06.news.aol.com
X-Admin: news@aol.com
Date: 15 Aug 1999 16:34:52 GMT
References: <37AE1E63.69F5@svn.net>
Organization: AOL http://www.aol.com
Message-ID: <19990815123452.29560.00000359@ng-bk1.aol.com>



Paul Grammens <grammens@svn.net> wrote:

>Supertimer wrote:
>
>> 
>> IIc+ still uses the old SCC serial chip, hence 19200 max and
>> no AppleTalk.
>> 
>> However, since the plugs are identical, the IIc+ can use IIGS
>> and Macintosh serial cables.
>
>I seem to recall that I tried to hook a Mac modem & cable to my IIc+ and
>it wouldn't work. Although the connectors are the same type, there are
>differences in the wiring. I think some of the pins the Mac uses are
>just grounded in the IIc+. I ended up making my own cable, and my
>scribbled notes say:
>
>IIc+         modem 
>1 ----------  20
>3 ----------   2
>4 ----------   7
>5 ----------   3
>2 ----------   6

The wiring is a little different.  The IIc Plus lacks some lines used for
hardware flow control on the Mac and IIGS.  However, most of the
time, modem and printer cables for the Mac/IIGS ports work on the
IIc Plus.

The modem and printer cables, however, are different from one
another.  Each have a pair of wires switched relative to the other,
which is why a printer cable can double as a null-modem cable.