The end goal is to document the board layout, then to produce board files, schematics, and a bill of materials. The design will be as true to the original board as possible, with subtle changes where needed to compensate for outdated/unsourcable parts, as well as some improvements. (Expansion audio enabled, CIC clone that only handles reset and lacks lockout functionality {hopefully}, and other minor changes)

Since this project is open-source you may do as you like with it, whether that is to make boards for personal use, sell replacement NES boards, or to use the provided info for further custom PCB work/designs.

Note: At this point in time, any and all motherboards will require the use of an original CPU, PPU*, and CIC Lockout chip to function. These are the only three parts that are custom and have no available replacement, the rest can be replaced with modern easily available parts.

The following peripherals/parts are also planned to be Reverse-Engineered:

+Power/Reset board

+RF Modulator board

+Famicom cartridge-NES adapter (With expansion audio fix)

+NES Controller

+NES Advantage

+NES Fourscore

+NES Satellite

Not all of these are guaranteed to be done, however I will work on any I can obtain.

I am not in any way affiliated with Nintendo, I'm just doing this in my free time as a stepping stone into further Reverse Engineering work.

*There is a PPU that can be used; the part number is UA6528 or UA6528P, and it is available on Aliexpress. While it works as a direct replacement, it isn't known whether it is compatible with all NES games.