Gameport Connector

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Game port Pins layout Connector : female DB15
Description	Name	Pin
+5V	Vcc	1
Button 0	B0	2
Position 0	P0	3
Ground	GND	4
Ground	GND	5
Position 1	P1	6
Button 1	B1	7
+5V	Vcc	8
+5V	Vcc	9
Button 2	B2	10
Position 2	P2	11
(MIDI Out)	/	12
Position 3	P3	13
Button 3	B3	14
(MIDI In)	/	15
Not connected	NC	S
Note : Pins 12 and 15 are reserved for MIDI interface.

Signals
P0 (Position 0) Control A, X axis.	P1 (Position 1) Control A, Y axis.
B0 (Button 0) Control A, Button 1.	B1 (Button 1) Control A, Button 2.
P2 (Position 2) Control B, X axis.	P3 (Position 3) Control B, Y axis.
B2 (Button 2) Control B, Button 1 (or Control A, Button 3).	B3 (Button 3) Control B, Button 2 (or Control A, Button 4).

Note : some game adapters doesn't check the last byte of the address and so use I/O 0200h-020Fh.