Yes, the box is basically a 6502 microprocessor and support chips, and has no
mechanical connections to the Selectric.
Al, do you want scans of the manuals for Bitsavers?
  From: Richard <legalize at xmission.com>
 In article <4428D6CA.EFA31B9E at rain.org>,
     Marvin Johnston <marvin at rain.org>  writes:
  Since I've had a number of requests for the
picture, it is online at:
 
http://www.rain.org/~marvin/escon.jpg 
 Based on the picture, it looks like it connects electrically to the
 Selectric and not mechanically.  I'm assuming the entire enclosure
 looks like a box and doesn't have "typing finger" solenoids on the
 bottom?
 --