Custom ROM for Sup Game Box 400-in-1

Alright, what is a “Sup Game Box 400-in-1”?

Here it is:

Image from one of the marketplaces.

It is a Famiclone handheld with the big “Sup” that are being sold in many local online stores.

They are loaded with about 400 bootleg Famicom games and also ROM hacks.

Also, they do appear in some different colors - red, blue, black, white and yellow.

I do not know when this thing actually exist, I have been seeing a lot of these since late 2019 onwards.

More information on how to dump its ROM, analysis and references are on the header.

Running a Custom ROM:

Running a small compilation of homebrews. Fitted with the original plastic casing. A part of the plastic has been broken and filed off near the unit’s power switch to accomodate the IDC cables.

Running with actual flash ROM inside.

Running with Teensy 4.1 ROM emulator. Artwork created using NES Assets Workshop

Acknowledgements:

• The NESDev members for providing many info about NES programming.

• The BGC Forums members for providing useful info on the OneBus systems.

• Fun homebrew games by MobyDeee (DONG, 2023), Fiskbit (Proximity Shift, 2023) and Voxel (Fish, 2023)