This is an NES emulator, written in Go. It's fairly new and very much a work in progress, so not all games run yet and not all features are implemented. Details are below.
Requires Go 1.1
From your GOPATH:
    $ sudo apt-get install libsdl1.2-dev libsdl-gfx1.2-dev libsdl-image1.2-dev libglew1.6-dev libxrandr-dev
    $ go get github.com/scottferg/Fergulator
You'll need to install XQuartz in order to run on OSX.
Requires Go 1.1
From your GOPATH:
    $ brew install sdl --with-x11-driver
    $ brew install sdl_gfx sdl_image glew
    $ go get github.com/scottferg/Fergulator
    $ Fergulator path/to/game.nes
    A - Z
    B - X
    Start - Enter
    Select - Right Shift
    Up/Down/Left/Right - Arrows
    Save State - S
    Load State - L
    Reset - R
    1:1 aspect ratio - 1
    2:1 aspect ratio - 2
    3:1 aspect ratio - 3
    4:1 aspect ratio - 4
    Emulate overscan - O
    Toggle audio - I
    Toggle pause - P
    Frame Advance - \
    Reload Debug JS - D
    Trigger Mode Event - M
- NROM
 - UNROM
 - CNROM
 - MMC1
 - MMC2
 - MMC3
 - MMC5
 - ANROM
 

