Sega SG-1000/Mk3/Master System Controller Pinout
It seems these happy beasts were only available in Japan, and to a limited extent, New Zealand. If you ever manage to find one, here's the controller pinout data you desire. The Sega Mk. III and Master System controllers also used the same pinout.
	Pin Function 1 Up 2 Down 3 Left 4 Right 5 NC 6 Button I 7 NC 8 Common 9 Button II

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