This is the info that was written inside the
front door of the 2116B.

connector  io addr io dev

203      10    time base
204      11    card reader
205      12    tape reader
206      13    line printer
207      14    paper tape punch
208      15    teletype
209      16    dual dac
210      17    adc
211      20    tv camera
212      21    disk 1
213      22    disk 2
214      23    calcomp
215      24    dvs  pgmer
216      25    mag tape 1
217      26    mag tape 2
218      27    relay reg

There are three switches inside the front door,
and they were set as indicated.

internal swithches
   memory:     norm
   phase:         norm
   instruction: norm