Nintendo NES Cartridge Circuit Board: Discrete Mappers

This is an unpopulated circuit board you can use to make your own homebrew NES games, or repair old games that no longer work. 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! You will, however, need to purchase components and solder them to the board yourself.

This circuit board can be used to make most NES cartridges that rely on discrete logic chips to operate. These boards are most common in the earlier NES releases. The following mapper types are supported:

• NROM (Mapper 0)
• UxROM (Mapper 2)
• CNROM/Panesian (Mapper 3)
• AxROM (Mapper 7)
• Color Dreams (Mapper 11)
• BNROM (Mapper 34)
• GNROM (Mapper 66)
• Mappers 79, 87, 148, 180

You can find all the information you need to assemble, configure, and program this board at my GitHub: https://github.com/MouseBiteLabs/NES-Cartridges/tree/main/Discrete%20Logic%20Mappers

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

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).