# Sega Genesis Controller

9 PIN DSUB ??

Pin | Name (Select=GND) | Name (Select=+5V)
--- | --- | ---
1 | Up | Up
2 | Down | Down
3 | Gnd / Left
4 | Gnd / Right
5 | +5VDC | +5VDC
6 | Button A | Button B
7 | Select | Select
8 | Ground | Ground
9 | Start | Button C

The chip inside the controller is a 74HC157. This is a high-speed cmos quad 2-line to 1-line multiplexer. The console can with help of the Select-pin choose from two functions on each input.

Contributor: | Joakim Ögren, Neal Patrick Howland

Source: | SEGA Genesis A/V pinout at GamesX

Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10