Here's my first MSX conversion (with the help of AI) of a game called Space Trouble.  SGM module is required.

Read the full post here.  https://forums.atariage.com/topic/390433-my-ai-experiment-an-msx1-to-colecovision-wsgm-of-space-trouble/

Terms of use:

This game conversion is released free of charge. I do not consent to any third-party publisher packaging, distributing, or selling it for commercial profit, even though I acknowledge I have no practical means to prevent it.

The only sanctioned commercial distribution is a limited run of physical carts that I may produce and sell myself. Personal use is otherwise unrestricted — you are welcome to build your own cart for your own use.

Download it here. https://cvaddict.com/game/space-trouble/

Enjoy!

A growing collection of browser-based tools for ColecoVision developers and homebrew creators. All tools are built around the SN76489 sound chip and TMS9918A graphics chip used by the ColecoVision, and export code compatible with CVBasic.

• Sprite Creator — Design 16×16 player and enemy sprites with a pixel editor, layer support, and a 15-colour ColecoVision palette. Exports directly as CVBasic or Z80 assembly data.


• Tile Creator — Build Mode 1 background tilesets for your game screens. Edit tiles in groups, preview your full screen layout, and export pattern and colour tables ready to paste into your project.


• Sound Creator — Craft SN76489 sound effects frame by frame. Adjust tone, volume, and noise per channel, audition in real time in the browser, and export as CVBasic SOUND statements.


• Music Tracker — Compose multi-channel music for the SN76489 using a tracker-style grid. Supports all three tone channels plus noise, with a piano keyboard for note entry and export as CVBasic MUSIC data.

These tools are a work in progress — there are plenty of known bugs and rough edges, and more features are on the way. If something breaks, that's expected. Feedback, bug reports, and suggestions are always welcome.

These tools were built independently with the help of Claude Code. If any of them happen to resemble someone else's work, it was entirely unintentional. The one exception is Tony Cruise, whose tools were referenced directly — with his knowledge and blessing.

I want to preface this by saying I'm not here to convince anybody of anything, nor offend anyone. This AI experiment is entirely my own, and my purpose in sharing it is educational — to help others do the same thing and to show that this kind of work is possible with AI. To the people who do this sort of work professionally, my hat goes off to you.

Terms of use:

This game conversion is released free of charge. I do not consent to any third-party publisher packaging, distributing, or selling it for commercial profit, even though I acknowledge I have no practical means to prevent it.

The only sanctioned commercial distribution is a limited run of physical carts that I may produce and sell myself. Personal use is otherwise unrestricted — you are welcome to build your own cart for your own use.

The tools I used were Claude Code (Sonnet and Opus models). You could use ChatGPT Codex to do the same things. Can you do all of this on a $20-$30/month plan? Not likely. I received permission to use my work account for personal reasons, so I did. This process ate up a *lot* of tokens (those who know, know), and I must have said "stupid AI" more times than I can count.

Let me explain the process I took...

**Step 1**

I had Claude create an MSX1 disassembly Python script. It may not be the best one out there, but my goal was for it to disassemble and reassemble perfectly, byte for byte. It did.

- `Space Trouble - HAL Laboratory (1984) [6756].asm`
- `z80msx_disasm.py`

**Step 2**

Have the AI build a conversion Python script to convert Space Trouble from MSX to ColecoVision. This was the hard part. A lot of back and forth, telling the AI what to debug and redo. In the end, it got there. Have the AI do test compiles and VRAM dumps along the way.  I gave it files to teach it the differences in the hardware and the SGM's specs.

- `msx2cv_space_trouble.py`

**Step 3**

Test the ROM, over and over. That was a lot of work on its own.

**Final build**

Start to finish, the complete build uses exactly these files:

*Input (never modified):*
- `output/Space Trouble - HAL Laboratory (1984) [6756].asm` — original MSX disassembly

*Scripts run in order:*
- `msx2cv_space_trouble.py` — converts MSX asm to CV asm, with credits and cheat built in
- `tniasm.exe` — assembles the CV asm into the final ROM

*Output:*
- `output/Space Trouble - CV.asm` — intermediate (generated, not edited manually)
- `output/Space Trouble - CV.ROM` — the final ROM, ready to play

That's it.

All files are available here. https://github.com/kamshaft/Space-Trouble-MSX-to-Colecovision 

The game ROM is here (https://cvaddict.com/game/space-trouble/) if you just want to play the game.

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