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MBC3 RTC For GB/GBC
The ChisFlash MBCX is an open-source single-ROM GB/GBC flash cartridge, It supports MBC3 hardware RTC for time-based games and MBC5 hardware rumble via firmware flash
Description
The ChisFlash MBCX is a retro flash cartridge designed for Game Boy and Game Boy Color compatible systems. It features MBC3 RTC real-time clock support, 32MByte Flash storage, and 1Mbit SRAM, making it a practical choice for retro handheld gaming, homebrew development, and compatible game testing.
With RTC functionality, the cartridge is suitable for software that uses time-based events. The large Flash capacity and SRAM save support make it a versatile cartridge for users who need a reliable GB/GBC flash solution.
This cartridge is intended for homebrew software, development testing, and legally backed-up game files only. No games, ROMs, or copyrighted software are included.
Features
MBC3 RTC Real-Time Clock Support Built with MBC3 RTC functionality, ideal for games and homebrew projects that require real-time clock features.
32MByte Flash Storage Equipped with 32MByte Flash memory, providing large storage capacity for compatible GB/GBC ROM writing and testing.
1Mbit SRAM for Save Support Built-in 1Mbit SRAM provides stable save data support for compatible games and development projects.
Designed for Game Boy / Game Boy Color Systems Compatible with original Game Boy, Game Boy Color, and other compatible handheld systems that support GB/GBC cartridges.
Great for Homebrew & Development A practical cartridge solution for retro handheld developers, hobbyists, testers, and users who want to run their own homebrew projects or legally backed-up game files.
Retro Cartridge Form Factor Classic cartridge-style design, easy to use with original handheld consoles and suitable for collection, testing, and daily retro gaming setups.
Specifications
Brand: ChisFlash Model: MBCX Version: V1.0 Cartridge Type: GB/GBC Flash Cartridge Mapper Support: MBC3 RTC Flash Memory: 32MByte Save Memory: 1Mbit SRAM RTC Function: Supported Compatible Systems: Game Boy / Game Boy Color compatible consoles
Package Includes
1 × ChisFlash MBCX MBC3 RTC Flash Cartridge
Important Notes
A compatible cartridge writer/flasher may be required to write ROM files to the cartridge. No game files, ROMs, or copyrighted software are included. For homebrew development, testing, and legal backup use only. Product appearance may vary slightly between production batches.
Acknowledgements
Special thanks to 兜鬼巨神兵 (CQZ) for developing and open-sourcing this project, and to the ChisFlash team for their generous contributions.