From: utzoo!decvax!ucbvax!C70:info-cpm
Newsgroups: fa.info-cpm
Title: MX-80 Serial boards
Article-I.D.: ucb.1185
Posted: Tue May 25 23:51:40 1982
Received: Sat May 29 06:07:55 1982

>From CAIN@Mit-Ai Tue May 25 23:51:28 1982
CAIN@MIT-AI 05/25/82 19:23:21 Re: MX-80 Serial boards
To: MSCHILLER.COOP*MC at MIT-AI
CC: INFO-CPM at MIT-AI
Mike,
  There is a wire on the main board that
controls where the MX-80's input comes
from.  I assume that the motherboard
of the F/T is the same as the 80 non
F/T, and that's true on mine.  When
you install the serial (or IEEE or any
other board) on the Epson, this wire
goes to a pin on the interface, effectivly
shutting out input from the parallel
port.  You might be able to rig
up a switch though ...I really don't 
know (never had to try).

   Hope this helps a bit
    Jonathan