Readers' Feedback: How To Build Your Own TI-99/4A Joystick Adapter
TI-99/4a to Atari 2600 Joystick Adapter - TexElec
6 Button Gamepad for the TI-99/4a - TI-99/4A Development - AtariAge Forums
Texas Instruments TI-99/4A joystick adapter - EasyEDA open source hardware lab
Texas Instruments TI99/4A 2 Player Atari Joystick Adapter, Melbourne Console Reproductions
Texas Instruments Ti-99/4A Joystick Adapter (1 port)
TI-99/4A FAQ: Joysticks and controllers - arcadeshopper.com
Atari joystick port - Wikipedia
TI-99/4A - Wikipedia
T'Crass@Home: Computers » Vintage » TI-99/4A » Joystick Adapter
Testing a Texas Instruments TI-99/4A Without Power or Video Cables – Justin Paulin
TI-99/4A Atari Joystick Adapter - Share Project - PCBWay
TI-99/4A - MCbx
TI-99/4A FAQ: Joysticks and controllers - arcadeshopper.com
Joystick Pinouts
Texas Instruments Ti-99/4A Joystick Adapter Converter with 1.5m Extension | eBay
TI-99/4A Video/Audio pinout and wiring @ old.pinouts.ru
Texas Instruments TI-99/4A (1981) | Oldcomputr.com
Readers' Feedback: How To Build Your Own TI-99/4A Joystick Adapter
TI-99/4A Custom Joystick Controller - Etsy Canada
Texas Instruments Ti-99/4A Joystick Adapter Converter with 1.5m Extension | eBay
TI-99/4a: Going Online Like it's 1979 | Auvik
TI-99/4A internal architecture
TI-99/4A KSP Controller Has A Handle On Vintage NASA Styling | Hackaday
