My Nes v4 Beta is released. My Nes is a portable open source NES/FAMICOM emulator written in C#. it cannot emulate 100%, it still a primitive one and needs a lot of work. however it has been tested and support over 200 games, 100 playable perfectly.

My Nes v4 Beta Changelog:
* Added option in browser for each folder that allows to show files in sub folders and to let the user choose wether to list sub folders in the list.
* Added ability to use NES DATABASE xml files for rom information, detecting right tv format for game and for mappers emulation.
* Video modes removed, only Direct3D is supported now. No need for them since My Nes renders pixel accurate now.
* Added option to display/hide the first 8 scanline in NTSC format in Direct3D.
* Added state stream for state save/load files.
* General emulation code optimization.
* Added ppu sprites evulation.
* Added support for ppu emphasis and monochrome effects.
* Added ppu internal ntsc palette generator.
* Fixed ppu frame timings.
* Fixed ppu odd frames.
* Fixed nmi timing and supression.
* Fixed four-screen.
* Fixed mapper # 58 and 65.
* Minor bugs fixed.

Download: My Nes v4 Beta x86
Download: My Nes v4 Beta x64
Source: Here