I have a few of these, and before I use one, I just want a reminder. Should the red stripe be on the front (toward the KB), or away (toward case back)?
I will likely do a pinout continuity check ere using it, but I figured I would ask before I spend that bother. I think that pin 1 is the lower-left pin on the internal connector, but that is from memory, which tells me that the red stripe should be on the borrom, towared the KB. I suppose I can connect it and check for vcc on the right output pin; probably the easiest way.
There were many 16 pin to 9 pin adapters made by various manufactureres, so I can't really answer that.
Pin 1 of the game port on the motherboard is +5V, so it should be a realtively minor task to bell-out the pins on your adapter.
I ran across this which might speed the process for the next person. I have not verified it.
(9-pin male connector) (Old 16-pin IC-style plug)
[2]--------------- +5V ------- 1
[7]--------------- Button 0 ------- 2
[5]--------------- X-axis ------- 6
[8]--------------- Y-axis ------- 10
[1]--------------- Button 1 ------- 3
[3]--------------- Ground ------ 8
You are better off looking at:
http://wiki.apple2.org/index.php?title=Pinouts#Apple_Game_Port_.289-pin_Connector.29
In any case, the red stripe does go on the bottom, toward the KB, on my adapter. I went through a continuity check, ere using it, to be safe, and I connected my CH joystick to the unit on my desk.