DB9/DIN6/DB15 joystick pinouts - Classic Computing Discussion - AtariAge Forums
General Purpose port - MSX Wiki
CSEE4840 PROJECT
Making a 9 Pin Joystick Cable (for Sega Genesis, Commodore 64, ColecoVision, Atari, etc.) - YouTube
Retro 9 Pin Joystick to USB Converter : 4 Steps (with Pictures) - Instructables
Atari 7800 joypad to MSX Adapter | danjovic | Hackaday.io
Atari joystick port - Wikiwand
Reviving an old joystick with an Arduino Leonardo | It's Every Bit For Itself
Rewiring your +2/+3 Joystick Ports to Atari Standard - Spectrum for Everyone
Atari-style joystick to PC joystick adapter pinout description @ Pinouts.ru
commodore 64 - Would a multi button controller have been possible on the C64? - Retrocomputing Stack Exchange
15-pin - Joystick-MIDI-port Layout
D SUB9 <> DIN Joystickadapter for VP/O2
Reading the Sega Mega Drive / Genesis control pads | PICAXE Forum
PC joystick interface
9pin Joystick Controller Cable for Atari 2600 Commodore C64 Vic-20 Ami – RetroArcadeCrafts
Atari ST
Joystick information and circuits
The Atari joystick Pinout Common Ground. - Atari 8-Bit Computers - AtariAge Forums
Joystick Controller for Commodore - Commodore 64 Brain
Joystick - DenialWIKI
PSCD32 Peripheral Signal Conversion Device - Mathew Carr
Dragon 32 Joystick adapter | Vrai's Retro Stuff
File:Atari joy-port.svg - Wikimedia Commons
