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README.pcatkeyboard
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README.pcatkeyboard
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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
http://www.physics.metu.edu.tr/~filker/cbm.html
---