This is a simple dumper/writer for Famicom cartridges and Famicom Disc System cards. This version is much faster compared to the [old one](https://github.com/ClusterM/famicom-dumper). It's using a very accurate M2 cycle simulation and FSMC (Flexible Static Memory Controller) to access PRG and CHR memory. FSMC is precisely synchronized with the M2 clock signal using a CPLD chip. The new version is also using a fast on-chip USB controller instead of a slow FT232 USB-UART converter.

* Dump cartridges, so you can play copy of your cartridge on emulator.

* Read/write battery backed saves, so that you can continue your saved game on emulator/console.

* Write special cartridges like [COOLGIRL](https://github.com/ClusterM/coolgirl-famicom-multicard).

* Rewrite ultracheap chinese COOLBOY cartridges. Soldering is required to work with old versions but it's very simple. New versions can be rewritten without soldering.

* Test your cartridges.

* Read and frite Famicom Disk System cards using FDS drive with the RAM adapter.

* Some reverse engineering.

* Anything else that requires Famicom bus simulation.