Light Pen Interface - IBM RT Series Hardware Reference Manual

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Light Pen Interface
P-2 Connector
P-2 Connector
Pin
+Light Pen Input
1
Light Pen
Not used
2
Enhanced
Attachment .
Graphics Adapter
+Light Pen Switch
3
Ground
4
+5 Volts
5
12 Volts
6
84 IBM Enhanced Graphics Adapter

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