Super Nintendo Flash Cartridge Circuit Board

This is an unpopulated circuit board you can use to make your own homebrew SNES games, or repair old games that no longer work. You will need to purchase components and solder them to the board yourself. This cartridge is made entirely from brand new off the shelf components. No donors are required, and you don't need to rely on AliExpress or eBay for parts!

These are new and improved Super Nintendo cartridge circuit board designs that are capable of being flashed after assembly via the Open Source Cart Reader (OSCR) by sanni or the SNESxFlasher by insideGadgets. Alternatively, you can also flash the ROM chips before soldering them to the board through the use of a programmer like the T48 programmer with the TSOP48 adapter. Please note that this design is NOT the same as flash carts that use an SD card to load games - these boards can only be flashed with one (or two) games.

There are three different variants: Advanced Flash, HiROM Flash, and LoROM Flash. The HiROM and LoROM boards are for making HiROM/ExHiROM or LoROM/ExLoROM games, respectively, but the Advanced Flash board supports all four of these mappers. Please click the link to each board to see more information, and especially check the wiki on the repository to help you decide what you'll need.

These cartridges cover over 95% of the entire SNES library, capable of any standard cartridge but not those with co-processors, such as SA-1 or SuperFX. You can backup games onto it with the following settings:

• Can be programmed to operate as a multicart, changing games by pressing the SNES reset button (this includes the ability to make two games of the same memory map, or one of each)
• Up to 8 MB of ROM space for a single game or 4 MB of ROM space for two games
• Up to 32 KB of RAM space for a single game or two separate banks of 32 KB RAM space for two games
• All these settings can be changed via DIP switch for easy on-the-fly modifications without soldering

If you want to make a non-flashable, but easier-to-solder version of these boards, you can use the Advanced UV board.

You can find example builds at the wiki page of the GitHub: https://github.com/MouseBiteLabs/Super-Nintendo-Cartridges/wiki/

This project is open source, so if you would like to order your own from the PCB manufacturer of your choice, the files are available in the GitHub repository. Just be sure to match the exact specifications as listed (thickness, surface finish, etc).