README.pcatkeyboard

APPENDIX:   BUILDING AT-KEYBOARD INTERFACE FOR C64:
===================================================


parts list
----------
. AT keyboard female connector. It has five ordered pin-holes.
. Datasette port connector. If you can't find, half of an user port conn is Ok.
. Some wire and a soldering iron...




front face views of the port and connector:
-------------------------------------------


Keyboard Connector:
-------------------


       --v--
      /     \
     /       \
   3 Io     oI 1
     \ o   o / 
    5 \  o  / 4
       -----
         2

+5pin 180 deg DIN (AT)          6pin MINIDIN (PS/2)
+----------------               ------------
+                                
+                                    _
+       (2)      1 CLOCK          (5) (6)        1 DATA
+    (5)   (4)   2 DATA              |           2 
+   (3)     (1)  3              (3)     (4)      3 GND
+                4 GND                           4 +5V
+                5 5V             (1) (2)        5 CLOCK
+                                                6
+
+ NOTE that the numbers below (connections) for DIN are for plug!
+
+ Maciej Witkowiak
+


Datasette Port:
---------------


   A B C D E F
   - -I- - - -



And the connections:
--------------------


      A--4
      
      B--5

    D,E--1     clock line (D is used as an interrupt source)

      F--2     data line



   That's all for the hardware.



Ilker Ficicilar
filker@newton.physics.metu.edu.tr
c068214@orca.cc.metu.edu.tr
http://www.physics.metu.edu.tr/~filker/cbm.html


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