File:Amiga Powerstick with 9-Pin connector and 1,5m cable.jpg - Wikimedia Commons
Joystick with 2 button support - English Amiga Board
Arduino Project: Commodore 64/Amiga, Atari 2600/XL/ST, ZX Spectrum Joystick to Windows/Linux (RetroPie) USB | jfrmilner's Tech Blog
Joystick information and circuits
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
commodore 64 - Would a multi button controller have been possible on the C64? - Retrocomputing Stack Exchange
Connectors Commodore 64 – My old computer
C-64 Workshop / Pin Connections
Homemade USB adapter for 9 pin Atari C64 Amiga Joysticks - YouTube
Build your own Commodore 64 arcade stick - a guide - Retro Games Collector
Joystick Electrical Connector D-subminiature RS-232 Commodore 64, PNG, 1920x965px, Joystick, Area, Atari, Black And
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Joystick tester db9 (Commodore 64, Amiga, Atari, etc) - Dreamcast.nu
Joystick interface for C-16, C-116 and Plus/4 - V1.1
Control Port - C64-Wiki
Joystick 2 button mod questions - English Amiga Board
How to connect old Atari style joystick to bluetooth PCB? - Electrical Engineering Stack Exchange
Joystick tester db9 (Commodore 64, Amiga, Atari, etc) - Dreamcast.nu
Reading C64 Joysticks and Analog Signals (Programming Electronics with the Commodore 64 Part 3) - Retro Game Coders
Does anyone use old 9 pin joysticks like this with a computer cores on the MiSTer? A friend wants to use this with the Amiga or ST emulators. : r/fpgagaming
Atari joystick port - Wikipedia
