Joystick PC Gameport · AllPinouts
SegaMaster System (SMS) and MegaDrive joystick pinout diagram @ pinoutguide.com
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Atari ST
Atari 7800 joystick - Retronic DesignRetronic Design
Atari 7800 joypad to MSX Adapter | danjovic | Hackaday.io
File:Atari joy-port.svg - Wikimedia Commons
Reviving an old joystick with an Arduino Leonardo | It's Every Bit For Itself
15/9 pin controller converter
Joystick - DenialWIKI
How to connect old Atari style joystick to bluetooth PCB? - Electrical Engineering Stack Exchange
Joystick interface for C-16, C-116 and Plus/4 - V1.1
General Purpose port - MSX Wiki
Joystick information and circuits
Amazon.com: JoFong Classic Retro Controller, Suitable for AV 620, HD 621 HD 821 Classic Game Consoles Plug-and-Play Wired Video Gamepad-9 Pin Plug 2 Packs,620-621 Controller : Toys & Games
Connectors Commodore 64 – My old computer
Amazon.com: JoFong Classic Retro Controller, Suitable for AV 620, HD 621 HD 821 Classic Game Consoles Plug-and-Play Wired Video Gamepad-9 Pin Plug 2 Packs,620-621 Controller : Toys & Games
C-64 Workshop / Pin Connections
Controller Conversion Help - Atari Jaguar - AtariAge Forums
msarnoff.org - USB Adapter for Sega Genesis Controller
CSEE4840 PROJECT
Atari joystick port - Wikipedia
Retro 9 Pin Joystick to USB Converter : 4 Steps (with Pictures) - Instructables
Making a 9 Pin Joystick Cable (for Sega Genesis, Commodore 64, ColecoVision, Atari, etc.) - YouTube
