Out of stock


Basic MMC3 board

NES TxROM Basic Board

There are no plans to restock the TxROM basic Board. Please see the NES TxROM Advanced instead.

The NES TxROM Basic is a homebrew or reproduction board that supports MMC3 mappers (Mapper 4) that don't need WRAM or a battery.

Component List

MMC3 - AX5202P MMC3 Implementation (INCLUDED)

PRG - 27C010/27C020/29F010/29F020 or compatible (Not Carried)

CHR - 27010/27C020/29F010/29F020 or compatible (Not Carried)

Lockout Chip - AVRCIC (HERE)

C1 - 22uf 16V Capacitor (HERE)

C2,C3 - 0.1uf 50V Capacitor (HERE)

Mapper Compatibility

Verified compatible with TLROM and TGROM mapper types. Please note that other mappers have not yet been tested.


Build instructions/tutorials aren't available at this time. If you are uncomfortable or new to building your own cartridges please wait for tutorials to become available.

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