
The "5$" parallel cable
-----------------------

  You will need the following components :
    1     D-sub 25 pin male
    1     2.5 mm male jack plug
    2     silicon diodes, typically 1N4148
    1.5 m (max) of 2-wires shielded cable

    When you purchase the 2.5 jack, be sure it fits correctly the TI92's. If
  you can't find one, you can use your TI/TI cable by splitting it in half.


\-----------------------------------------------------/
 \ .   .   .   .   .   .   .   .   .   .   .   .   . /
  \  .   .   .   .   .   .   .   .   .   .   .   .  /   D-sub 25pin male
   \-----------------------------------------------/

     13             3      12             2   22        Pin number
      Ś             Ś       Ś             Ś    Ś
      Ś +---------+ Ś       Ś +---------+ Ś    Ś
      +-Ś    D  Ś +-+       +-Ś    D  Ś +-+    Ś        Diodes
      Ś +---------+         Ś +---------+      Ś
      Ś                     Ś                  Ś
    (red)                (white)               Ś
      Ś                     Ś                  Ś
    Head                  Ring              Shield


           Head  Ring  Shield
             Ś     Ś      Ś
             Ś     Ś      Ś    +-------
            ___---___--_______-+
           ____   ___  _______
          _____   ___  _______                          2.5 mm Jack
           ____   ___  _______
            ___---___--_______-+
                               +-------

  Parallel port pin-out :
     2  D0   data bit 0
     3  D1   data bit 1
    12  PO   Paper Out
    13  OL   On Line
    22  GND  Ground

    Be carefull when purchasing the 2.5 mm jack plug. They often have
  slightly different shapes that could lead to the following problems.
  If the pin is too tight, you will have bad connections. But if the pin
  has a too big 'head', you are likely to damage your I/O port. Further
  use of TI's cable (with cylindrical pin) would be impossible.