C-64 Workshop / Pin Connections
Commodore 64 - Wikipedia
ADVANCED COMMODORE C16 / PLUS 4 / TO C64 / AMIGA JOYSTICK CONVERTER ADAPTER | eBay
Joystick information and circuits
Joystick with 2 button support - English Amiga Board
Joystick tester db9 (Commodore 64, Amiga, Atari, etc) - Dreamcast.nu
An Ode to Commies: Attack of the Mouse Clones
Winterground Fairlands - A World Of Funmagineering!: July 2015
Atari Commodore 64 Amiga Joystick Tester - Share Project - PCBWay
Reading C64 Joysticks and Analog Signals (Programming Electronics with the Commodore 64 Part 3) - Retro Game Coders
Connectors Commodore 64 – My old computer
Build your own Commodore 64 arcade stick - a guide - Retro Games Collector
How to connect old Atari style joystick to bluetooth PCB? - Electrical Engineering Stack Exchange
The Keypad Joypad - Amiga, Atari, C64... | Hackaday.io
Retro Isle - C64/128 Technical Section
Build your own Commodore 64 arcade stick - a guide - Retro Games Collector
Arduino Project: Commodore 64/Amiga, Atari 2600/XL/ST, ZX Spectrum Joystick to Windows/Linux (RetroPie) USB | jfrmilner's Tech Blog
Commodore CD32 gamepad - Retronic DesignRetronic Design
Joystick Controller for Commodore - Commodore 64 Brain
Atari Commodore 64 Amiga Joystick Tester - Share Project - PCBWay
commodore 64 - Would a multi button controller have been possible on the C64? - Retrocomputing Stack Exchange
How to build an Amiga Joystick to USB adapter (DB9 to USB) - Retro32
Joystick tester db9 (Commodore 64, Amiga, Atari, etc) - Dreamcast.nu
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
