Indigo Pinouts

     Personal Iris to Indigo and back keyboard adapter pintout

 _
 1 DTR  | Data Terminal Ready
 2 CTS  | Clear To Send
 3 TD   | Transmit Data
 4 SG   | Signal Ground
 5 RD   | Receive Data
 6 RTS  | Request To Send
 7 DCD  | Data Carrier Detect
 8 SG   | Signal Ground

 1  GROUND
 2  COLLISION+
 3  TRANSMIT+
 4  GROUND
 5  RECEIVE+
 6  GROUND
 7  (Reserved)
 8  GROUND
 9  COLLISION-
 10 TRANSMIT-
 11 GROUND
 12 RECEIVE-
 13 +12V
 14 GROUND
 15 (Reserved)

  1  STROBE
  2  DATA(0)
  3  DATA(1)
  4  DATA(2)
  5  DATA(3)
  6  DATA(4)
  7  DATA(5)
  8  DATA(6)
  9  DATA(7)
  10 ACK
  11 BUSY
  12 PE (Paper End)
  13 SELECT
  14 AUTOFEED
  15 ERROR/FAULT
  16 INIT/RESET
  17 SELECT-IN (Direction)
  18 GROUND
  19 GROUND
  20 GROUND
  21 GROUND
  22 GROUND
  23 GROUND
  24 GROUND
  25 GROUND

  1  GROUND
  2  GROUND
  3  GROUND
  4  GROUND
  5  GROUND
  6  GROUND
  7  GROUND
  8  GROUND
  9  GROUND
  10 GROUND
  11 GROUND
  12 Reserved
  13 Open
  14 Reserved
  15 GROUND
  16 GROUND
  17 GROUND
  18 GROUND
  19 GROUND
  20 GROUND
  21 GROUND
  22 GROUND
  23 GROUND
  24 GROUND
  25 GROUND

  26 DB(0)
  27 DB(1)
  28 DB(2)
  29 DB(3)
  30 DB(4)
  31 DB(5)
  32 DB(6)
  33 DB(7)
  34 DB(P)
  35 GROUND
  36 GROUND
  37 Reserved
  38 TERMPWR
  39 Reserved
  40 GROUND
  41 ATN
  42 GROUND
  43 BSY
  44 ACK
  45 RST
  46 MSG
  47 SEL
  48 C/D
  49 REQ
  50 I/O