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From: rees@pisa.ifs.umich.edu (Jim Rees)
Newsgroups: comp.sys.apollo
Subject: Re: serial pigtail cable (was Instant Apollo)
Message-ID: <4e66a270.1bc5b@pisa.ifs.umich.edu>
Date: 4 Dec 90 20:51:43 GMT
References: <12288@milton.u.washington.edu>
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Reply-To: rees@citi.umich.edu (Jim Rees)
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In article <12288@milton.u.washington.edu>, etb@milton.u.washington.edu (Eric Bushnell) writes:

  Matt Hefron's wirelist for the triple serial cable
  coincides with the info I got from a local apollo
  tech. He added, however, that pin 11 in the
  combined port (whose RS232
  function I cannot recall) can be connected to pin 11 
  of the first pigtail to provide its signal to the occasional
  device that may use it.

Pin 11 isn't used by rs232.  The only device I can think of right now that
uses it is the obsolete Bell 208A 4800 bps modem.  It indicates that the
modem is in "equalizer mode."