On Sat, 2 Nov 2002, Tony Duell wrote:
  The serial port is standard, but with rather more pins
wired than you'd
 expect (I think some of the 'secondary' ones are used too). 
While on this subject, does anyone remember the 300 baud pulse dial Lynx
modems? I have a couple, but I need to find another of the right angle pc
boards (I'll put up a photo as soon as I dig out the one I have) that
originally came with them so that I can connect one each to both my model
3 and model 4. I could also use another one of those modems to dedicate
for use on my model 1 if someone has one laying around that they don't
plan to use. (Yep, this thread has bitten me, and I'm planning to do
something with my TRS80s again ;P)
-Toth