Master System Joystick
From HwB
Available at the Sega Master System, SG-1000 & SG-1000 Mark III console.
Contents |
[edit] Pinout
9 PIN D-SUB MALE at the Console.
9 PIN D-SUB FEMALE at the joystick cable.
| Pin | Dir | Description |
|---|---|---|
| 1 |  | Up |
| 2 | | Down |
| 3 | | Left |
| 4 | | Right |
| 5 |  | +5VDC |
| 6 | | TL |
| 7 | | TH |
| 8 |  | Ground |
| 9 | | TR |
Note: Direction is Computer relative Joystick.
[edit] Gamepad
Signals are multiplexed. Select with TH.
| Pin | TH=L | TH=H |
|---|---|---|
| 1 | Up | |
| 2 | Down | |
| 3 | 0 | Left |
| 4 | 0 | Right |
| 6 | Start | Button C |
| 9 | Button A | Button B |
[edit] 6-button Gamepad
A 6-button gamepad allows the extra buttons to be read based on how many times TH is switched from 1 to 0 (and not 0 to 1). Observe the following sequence (left to right):
| Pin | TH=H | TH=L | TH=H | TH=L | TH=H | TH=L |
|---|---|---|---|---|---|---|
| 1 | Up | 0 | Button Z | 1 | ||
| 2 | Down | 0 | Button Y | 1 | ||
| 3 | Left | 0 | Left | 0 | Button X | 1 |
| 4 | Right | 0 | Left | 0 | Mode | 1 |
| 6 | Button C | Start | Button C | Start | Button C | Start |
| 9 | Button B | Button A | Button B | Button A | Button B | Button B |
From this point on, the standard 3-button pad values will be returned if any further TH transitions are done.
[edit] Contributions
[edit] Sources
- SMS Power: Master System controller
- Sega Genesis hardware notes v0.8 by Charles MacDonald