Straight-through 9-pin D-sub extension for the Atari-standard digital joystick port shared by the Atari 2600 and 7800, Commodore 64, Amiga, Sega Master System and Genesis. Not a serial or null-modem cable — those are wired differently and will not work.
Connection Endpoints
| End A | DE-9 (Atari / Sega Joystick Port) (male) |
|---|---|
| End B | DE-9 (Atari / Sega Joystick Port) (female) |
Specifications
| Protocol | Atari-standard digital joystick (DE-9) |
|---|---|
| Max Resolution | N/A |
| Consumer Tier | DE-9 Joystick |
| Status | Legacy |
Supported Features
Digital Directions
Fire Buttons
5V Pin (Sega 6-button strobe)
Length & Physical
| Max Passive Length | 1.8m |
|---|
Notes & Compatibility
Must be straight-through (pin-to-pin). RS-232 serial and null-modem cables use the same DE-9 shell with different wiring and will not work — check the description, not the photo. All nine pins should be wired: cheaper extensions omit pin 7 or pin 9 and break Sega six-button pads and Atari paddles. Cross-family use is imperfect by design; a Genesis six-button pad on an Atari 2600 works as a three-button pad.
