ColecoVision Super Game Module (SGM) — TTL Version, Fully Assembled & Tested For Sale

Bring your ColecoVision up to Super Game Module spec with this hand-built TTL logic version of the SGM. Built from a proven open-source design and fully assembled and tested before shipping.

What it does:

• Adds 32KB of additional RAM, unlocking SGM-enhanced homebrew and hack titles

• Adds AY-3-8910 sound chip support for improved audio in compatible games

• Plug-and-play — no soldering, no console modification required

• Works alongside your standard ColecoVision cartridges as normal

Build details:

• Built using genuine TTL logic ICs (no modern microcontroller substitutes)

• Housed in a custom 3D-printed case for a clean, finished look **New improved case design for a sturdier and more reliable cartridge that can withstand frequent use**

• LED power indicator

• Hand-assembled and function-tested on real ColecoVision hardware before • Works with original ColecoVision consoles

• Compatible with SGM-enhanced games and most current ColecoVision homebrew titles taking advantage of the extra RAM/sound

What’s included:

• 1x assembled SGM TTL module in 3D-printed case

Design credit:

This board is built from an open-source design shared under a Creative Commons Attribution-ShareAlike license.

• PCB design: Eric Chartre

• Original 3D-printed case design: visrealm

Both works are used and shared under CC BY-SA 3.0 terms. This listing is my own build/assembly of these open designs; I’m not the original PCB or case designer. Due to the nature of FDM 3D printing, colors and textures may vary slightly from the item pictured, but will not affect functionality.***NOTE: All my SGMs are tested using authentic ROMs on an Atarimax Ultimate SD for Colecovision & Adam on original hardware before shipping. I cannot guarantee compatibility with other third-party flash cartridges, modified consoles, or other reproduction game cartridges. If you have any questions, please do not hesitate to contact me before purchasing.