FC TxSxROM Advanced


Advanced MMC1 or MMC3 board with save capability.

In stock

SKU: FC_TxSxROM_Advanced_black Categories: , ,


FC TxSxROM Advanced Board

PLEASE NOTE: This listing is for the FC TxSxROM Advanced Board only, and is only made available by special request. Please contact us.

The FC TxSxROM Advanced is a homebrew or reproduction board that supports MMC1 mappers (Mapper 1) or MMC3 mappers (Mapper 4) and supports WRAM with save support.

Component List

U1 – Lockout Chip – AVRCIC (HERE)

U2 – PRG – 27C010/27C020/29F010/29F020 or compatible (Not Carried)

U3 – CHR – 27010/27C020/29F010/29F020 or compatible (Not Carried)


U5 – MMC3 – AX5202P MMC3 Implementation (NOT INCLUDED)

U6 – MMC1 – AX5904 MMC1 Implementation (NOT INCLUDED)

C1,C4 – 22uf 16V Capacitor (HERE)

C2,C3,C5 – 0.1uf 50V Capacitor (HERE)

C6 – 1000pf Capacitor (Optional*) (COMING SOON)

D1,D2 – 100V 300MA Diode – 1N4148-T50A (HERE)

R1,R2 – 10K Ohm Resistor (HERE)

R3 – 27K Ohm Resistor (Optional) (COMING SOON)

Battery – CR2032 Battery with tabs (Not Carried)

Mapper Compatibility

If using a AX5202P (MMc3) verified compatible with TLROM, TGROM, TSROM, TKROM, and TNROM mapper types. Please note that other mappers have not yet been tested.

If using a AX5904 (MMC1) verified compatible with SLROM, SGROM, SKROM, and SNROM mapper types. Please note that other mappers have not yet been tested.

* Please note that is only for some games that have a hard time with newer SRAMs (Faster then 120ns). If you are using older SRAM or your game doesn’t have an issue then it is not needed. By populating C6 this can solve the issue for MMC3 games.


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.

Additional information

Weight 0.05 lbs
Dimensions 4.02 × 3.44 × 0.055 in



There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.