This is a custom made, pre-built 2MB Flash / 32KB SRAM rewritable cartridge for Game Boy and Game Boy Color. This cartridge includes an authentic OEM PCB with working Real Time Clock (RTC) functionality for use with compatible GB / GBC games.

This cartridge was created by swapping out the Mask ROM included with the OEM PCB and replacing it with a flash adapter (also available for purchase) and AM29F016 flash memory chip.

Flash cartridges have been fully tested using the following cartridge reader/writers:

• GBxCart RW v1.4 Pro from InsideGadgets
• BennVenn Joey Jr. V2 USB-C with FW 2.29
• GB Operator from Epilogue

Note that the BennVenn Joey Jr. V2CC is not currently supported, but a future firmware update should add compatibility. The previous generation Joey Jr. V2 USB-C is supported, however.

Flash carts may be compatible with other cartridge reader/writer systems, but have not been fully tested.

Each Cartridge Includes:

• Original Gameboy / Gameboy Color MBC3 PCB with 256kb (32KB) Battery Backed SRAM
• MBC3 and RTC Crystal has been tested and verified using the MBC3 test suite
• Preinstalled 2MB AM29F016 flash memory: each flash chip has been fully written and verified data to ensure proper operation
• Brand new CR2032 Battery soldered onto the PCB
• A cleaned OEM Shell or New High Quality Shell (from CGS - Cloud Game Store on AliExpress)

Since all cartridges are pulled from original PCBs, there may be some wear on the cartridge connector itself. All cartridges have been thoroughly cleaned using 99% Isopropyl Alcohol and DeoxIT Gold contact cleaner to ensure maximum compatibility.

Adapter Packs Include:

• 3 TSOP-40/48 ENIG Flash Adapters with castellated holes that support AM29F080, AM29F016, and AM29F032 flash chip. These adapter can be soldered onto compatible 32-pin footprints on compatible MBC1 / MBC2 / MBC3 cartridges.

Note: Additional wires to WE, A20 (for F016/F032) and A21 (for F032) will also need to be soldered. Adapters source files / gerber available on GitHub as well!