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Re: Apple IIe Game port pins?



raivo@anal.chem.uva.nl (Raivo Kilg) wrote:

> Could somebody post Apple IIe 9-pin game port pin assignment. I don't
> have technical manuals and can't find it from the FAQ's.
> 

+---------------------+
 \ 5   4   3   2   1 /
  \  9   8   7   6  /
   +---------------+

1=PB1   2=+5 V  3=Gnd
4=GC2   5=GC0   6=PB2
7=PB0   8=GC1   9=GC3

GC0  Game Controller 0 input.  An analog input designed to accept a
     variable resistance in the range of 0 to 150 K ohms.  Each GC
     input is part of an analog-to-digital (A-to-D or A/D) conversion
     circuit that allows an analog resistance value to be converted
     into a digital quantity.  The resistance forms part of a simple
     RC (resistor-capacitor) timing circuit that sets the time
     constant for the 558 integrated circuit (a quad version of the
     555 Timer).
GC1  Game Controller 1 input.  Same as GC0.
GC2  Game Controller 2 input.  Same as GC0.
GC3  Game Controller 3 input.  Same as GC0.
PB0  Push Button 0 input.
PB1  Push Button 1 input.
PB2  Push Button 2 input.