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9 pin D-SUB female connector layout
9 pin D-SUB female connector
The pinout should fit 2 devices/models. Click to list>
Pin Signal Description
1 Up  
2 Down  
3 Left  
4 Right  
5 VCC Supplies peripherals (such a Light Phaser) with +5v
6 Button 1  
7 Light sensor (Light Phaser only)  
8 GND  
9 Button 2  

When a controller button is pressed, its associated signal is asserted low (grounded) to result in movement, fire, jump, etc. For the Sega Master System controllers, each button is connected to its own signal trace.

Sega Genesis/MegaDrive controllers differ electrically, utilizing a select signal on pin 7 for multiplexing input data.

9 pin D-SUB male connector layout
9 pin D-SUB male connector
Pinout status: +9 -2
According to 12 reports in our database (9 positive and 2 negative) the SegaMaster System (SMS) pinout should be correct.

Is this pinout
NO DIY devices
SegaMaster System (SMS) visual pinout:click to enlarge
Source(s) of this and additional information: www.epanorama.net
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