This is a document on the NES/Famicom hardware written in the courseof development of iNES emulator. Nintendo Entertainment System Architecture Watch out for more changes and additionsto this document. A lot of people asked forthis kind of information. This is a little guide I wrote for those who want to write a computer emulator, but are not sure where to start. Thus, you should avoid making the source code from this page and any derived code part of a GPLed project. The above license terms are incompatible with GPL.

If you want to use my work in a commercial project, please, contact me to negotiate the terms. This includes using them in commercial projects, putting them onto companion CDs, etc. Later, I intend to implement the same EMULib API for Unix and probably other platforms.