DotNES - молодой эмулятор (эта первая публичная версия) консоли NES/Famicom. Эмулятор написан на C#. Уже сейчас обладает неплохой совместимостью и волне играбелен. В первой версии:

DotNES emulates the NES's 6502 CPU, PPU (display chip), Sound, and Joypad 1 at the moment. It supports mappers 0, 1, 2, 3, 4, 5, 7, 11, 34, 71 and 232. Additionally it supports saving SRAM to disk and saving/restoring state (still a bit buggy on some mappers). The sound emulation is decent and supports all 5 channels (2 Square Wave, 1 Triangle, 1 Noise and 1 DMC (Sample) channel). The DMC channel is still a bit buggy, and there are occasions where sound channels won't shut off when they should... still trying to figure that out.

The performance is not quite where I'd like it to be. Since I knew nothing about the NES when I started writing DotNES, most of the code in the emulator is written for readability, not speed optimization. As I work out the remaining issues, I'll be doing more and more cleanup to make the performance better.

The PPU is probably the least complete of the emulated NES hardware. There are numerous bugs and a few unimplemented features -- sprite/background priorities are wrong for example. But I'm working on it...