It is most tiny ;D
What is it - can you explain more?
Mod your famicom disk system to write disks. The model with a 3206 chip has copy-protection that can be circumvented with this chip.
The function of both stuff are same. The better things of new one are small and no need to cut wires. :)
Some of those joints look bare, might be good to use Kapton tape to make sure nothing shorts.