SGM Test Cartridge

ColecoVision Super Game Module TTL Clone + Test Cartridge (3D Printed Case, Fully Assembled)
Bring new life to your ColecoVision or Coleco Adam with this hand-built Super Game Module TTL Clone and matching Super Game Module Test Cartridge — the perfect pair for serious collectors, homebrew developers, and retro enthusiasts.
About the Super Game Module TTL Clone
This module is a clone of the original Super Game Module, built from a publicly available open-source design using classic TTL logic chips, a genuine AY-3-8910 sound chip, and 32KB of RAM — all neatly enclosed in a custom 3D-printed black case.
When connected, it expands your ColecoVision’s capabilities, enabling it to run any Super Game Module-compatible game just like the original hardware.
Features:
Fully assembled and tested
Authentic AY-3-8910 sound chip
32KB RAM expansion
Works with both ColecoVision and Coleco Adam
LED power indicator
Durable, professional 3D-printed case
How to Use:
Turn off your ColecoVision.
Plug the module into the Expansion Module Interface with the LED hole facing upward.
Power on and enjoy enhanced Super Game Module titles!
Compatible with the Coleco Adam Computer (power must be off before connecting).
About the Super Game Module Test Cartridge
Included is a matching test cartridge, also built from publicly available source code and mounted on a custom ColecoVision PCB, complete with a matching 3D-printed black shell.
When used with the Super Game Module TTL Clone, it verifies proper operation of the RAM and the AY-3-8910 sound chip.
To use:
With the power off and the Super Game Module TTL Clone connected, insert the Test Cartridge.
Power on your ColecoVision.
After the title screen, the diagnostic will automatically test RAM and sound functionality.
About This Project
Both the Super Game Module TTL Clone and Test Cartridge are based on publicly available open-source designs, carefully assembled and finished for a clean, professional look.
Each unit is hand-built, tested, and designed to complement your ColecoVision collection with authentic retro flair.
Included:
1× Super Game Module TTL Clone (3D-printed black case)
1× Super Game Module Test Cartridge (3D-printed black case)
Instruction leaflet
Notes:
These units are community-built reproductions.
Each module is assembled and tested before shipping.
Because this is hobbyist hardware, minor cosmetic variations may occur.
Questions?
I’m always happy to help! Feel free to message me with any questions about compatibility, setup, or availability.