Atari joystick port - Wikipedia
The Keypad Joypad - Amiga, Atari, C64... | Hackaday.io
Reading C64 Joysticks and Analog Signals (Programming Electronics with the Commodore 64 Part 3) - Retro Game Coders
COMMODORE 64 128 User Port 4 player Joystick interface | eBay
Commodore 64 User Port Project Development PCB - Share Project - PCBWay
File:Commodore 64 - Joystickports, EinAus-Schalter, Poweranschluss.jpg - Wikimedia Commons
Retronics USB Joystick Adapter and Other Coolness with V-USB | Code and Life
Joystick interface for C-16, C-116 and Plus/4 - V1.1
Control Port - C64-Wiki
Building a Paddle for Arkanoid, for the Commodore 64 - Valiant EN
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
I added a vintage 9-pin port to my C64 mini, including working F-keys and extra buttons. Goodbye broken usb joystick! : r/c64
iNNEXT USB Game Controller Review - Lyonsden Blog
Commodore 64 Joystick Port Switcher - YouTube
C-64 Workshop / Pin Connections
Build your own Commodore 64 arcade stick - a guide - Retro Games Collector
Retro Isle - C64/128 Technical Section
4 players adapter for Commodore 64 - Share Project - PCBWay
Homemade joystick – Commodore 64
Connectors etc
USB Joystick Adapters – breadbox64.com
Connectors Commodore 64 – My old computer
3MF file C64 Arcade Style Joystick・3D print design to download・Cults
USB Joystick Adapters – breadbox64.com
C64 Joystick Adapter - Share Project - PCBWay
9pin Joystick Controller Cable for Atari 2600 Commodore C64 Vic-20 Ami – RetroArcadeCrafts
