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SegaMaster System (SMS) and MegaDrive joystick pinout

videogames connector

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9 pin D-SUB female connector layout
9 pin D-SUB female connector

The SMS gamepads are almost exactly the same as normal

PinSignalDescription
1Up  
2Down  
3Left  
4Right  
5Power  
6Button 1  
7N/C  
8GND 
9Button 2  

Each button (left, right, button 1 ect.) is in fact a voltage(very small), this voltage is grounded to result in movement, fire, jump ect. For standard master system controllers this is directly feed to the system via wires only (some other controllers use a micro chip) they also are not connected to voltage, while some others do.

The Sega Genesis (in Europe sold as Sega MegaDrive) pads are an extension to the Sega Master System pads. They use more buttons (3+1, 5+1, 6+1). They use the one usnused pin as a select pin for reading more buttons.

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9 pin D-SUB male connector layout
9 pin D-SUB male connector
Related pinouts:

Sega Genesis Controller (Joystick) Connector

Pinouts.ru > Videogames connectors pinouts listing > Pinout of SegaMaster System (SMS) and MegaDrive joystick and layout of 9 pin D-SUB female connector and 9 pin D-SUB male connector
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