source: buchla-68k/orig/doc/Utilities/TIPRINT.TXT

TI 855 Printer Parallel Interface Cable         P/N 2223106-0001
---------------------------------------         ----------------

P1      Signature       P2      Signature       Function
--      --------------  --      --------------  --------------------------------
 1      *DATA STROBE     1                      Sample data at leading edge

 2      DATA 1           2                      Input data LS bit
 3      DATA 2           3                      Input data
 4      DATA 3           4                      Input data
 5      DATA 4           5                      Input data
 6      DATA 5           6                      Input data
 7      DATA 6           7                      Input data
 8      DATA 7           8                      Input data
 9      DATA 8           9                      Input data MS bit

10      *ACKNOWLEDGE    10                      Character received
11      BUSY            11                      Device busy - cannot receive
12      PE              12      PAGE END        Paper-out error
13      SELECT          13      ONLINE          Printer on-line
14      *AUTO FEED      14                      Automatic line feed
32      *FAULT          15                      Fault
31      *INIT           16                      Initialize printer
36      *SELECTION      17      *SELECT IN      Select printer for reception

33      GROUND          18                      Ground
19      GROUND          19                      Signal return
21      GROUND          20                      Signal return
23      GROUND          21                      Signal return
21      GROUND          22                      Signal return
21      GROUND          23                      Signal return
21      GROUND          24                      Signal return
21      GROUND          25                      Signal return

* = Active LOW

P1 is a 36 pin Cinch male connector that goes to the printer.

P2 is a 25 pin DB-25P male connector that goes to the cpu.


TI 855 Printer Serial Interface Connector       P/N 2222477-0001
-----------------------------------------       ----------------

P1      Signature       P2      Signature       Function
--      --------------  --      --------------  --------------------------------
17      CHASSIS GND      1      FG              Chassis ground

16      RXD              2      XMTD            Serial data from host to printer
35      TXD              3      RXD             Serial data from printer to host

19      SIGNAL GND       7      SG              Signal return

15      READY/BUSY      11      BUSY            Busy when LOW - Jumper to P2-19
                        19      BUSY            Busy when LOW - Jumper to P2-11

nc                       4      RTS             Jumper to pin P2-5
nc                       5      CTS             Jumper to pin P2-4

nc                       6      DSR             Jumper to P2-8 and P2-20
nc                       8      DCD             Jumper to P2-6 and P2-20
nc                      20      DTR             Jumper to P2-6 and P2-8

nc = not connected.

P1 is a 36 pin Cinch male connector that goes to the printer.

P2 is a 25 pin DB-25P male connector that goes to the cpu.