ChameleonNES is based on Chameleon-USB by Optimize.
What's it ?Suck up code from NES cartridge via USB.
Chameleon-USB is released by Optimize.(Unfortunately, only Japanese-page). Connection board is soldered by my-self.
How to make it ?You have to have enough soldering experience.
I made bit-manipulation software for ChameleonNES(cartridge grabber system). It is possible to grab data with byte-by-byte manually. You can get data then check each bit and press Address Set button of bottom. Following pictures show most famous NES game which was released by Nitendo.
You can read out data from Program ROM with select Prog. of right-side.
You can read out data from Character ROM with select Char. of right-side.
You can read out data from Cart.
I tested my own SuperMarioBros. Cart. It's designed for only cart of this type. Down load is here.
Please let me know, how to access Mapper system ...