CatFlash Midnight (8MB Mega Drive / Genesis Flash Cartridge)

CatFlash Midnight is an 8 MB / 64 Mbit reprogrammable flash cartridge board for the Mega Drive, Genesis, Mega Sg, Retron3, etc.

It provides 8 MB ROM space without a mapper chip, making it suitable for large homebrew releases, demos, ROM hacks, and development builds.

Using the full 8MB as ONLY been tested on original Mega Drive / Genesis 1 & 2 models.
Our board is also compatible with Genesis 3 or other clone consoles but they can only access 4MB.

Save data is stored in flash using MD Engine’s flash save mode, so there is no coin-cell battery to die and need replacing.

It can be reprogrammed as many times as needed.

The cartridge achieves its 8 MB capacity by routing the cartridge select signal to the 68000 A22 address line, avoiding the Mega-CD address collision that normally limits standard cartridges to 4 MB. Because of this design, CatFlash Midnight can't access the Mega-CD / Sega CD use.

Manufactured by Two Black Cats.

Note: A compatible cartridge flash programmer is required to write software to the cartridge, such as Krikzz.