Classic Atari Joystick to USB Adapter - YouTube
9pin Joystick Controller Cable for Atari 2600 Commodore C64 Vic-20 Ami – RetroArcadeCrafts
Rewiring your +2/+3 Joystick Ports to Atari Standard - Spectrum for Everyone
Paddle/Driving controller pinouts? - Hardware - AtariAge Forums
Reviving an old joystick with an Arduino Leonardo | It's Every Bit For Itself
Reading the Sega Mega Drive / Genesis control pads | PICAXE Forum
The Atari joystick Pinout Common Ground. - Atari 8-Bit Computers - AtariAge Forums
USB joystick adapter for 9 pin joysticks – Vintage is The New Old
General Purpose port - MSX Wiki
File:Atari joy-port.svg - Wikimedia Commons
SegaMaster System (SMS) and MegaDrive joystick pinout diagram @ pinoutguide.com
Joystick PC Gameport · AllPinouts
Retro Isle - Spectrum Joysticks
Joystick - DenialWIKI
Winterground Fairlands - A World Of Funmagineering!: July 2015
Atari 7800 joypad to MSX Adapter | danjovic | Hackaday.io
Joystick information and circuits
C-64 Workshop / Pin Connections
9pin Joystick Controller Cable for Atari 2600 Commodore C64 Vic-20 Ami – RetroArcadeCrafts
Atari ST
Interfacing with Video Game Controllers - Circuit Cellar
Atari joystick port - Wikiwand
Ardunio Micro Joystick Card | The Sim
Joystick Controller for Commodore - Commodore 64 Brain
Making an xarcade to atari controller for the wii adapter | GBAtemp.net - The Independent Video Game Community
PC Joystick Pinout – rahji.com
