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FCEUX is written for two platforms: SDL and Win32. The two ports have some significant differences. The Win32 port has an extensive set of native gui amenities and tools. The SDL port supports many of the features of the Win32 build (Lua scripting, movie recording), however some of the Win32 features are exclusive to the platform. The Win32 port has a built-in GUI, whereas the SDL port has a GTK launcher GUI. The SDL port should run any UNIX-like OS (Linux/Solaris/BSD). Network play is not presently functional. Fixing it is a high priority. Win32: Lua is enabled and has all necessary files in 2.1.x releases. It also comes with a number of examples which show some of Lua's full potential These files are also available in the [fceux.com/luapack] (to use these, they must be in the same folder as fceux.exe). Be sure to check out the .chm file. We work pretty hard on keeping that up to date. The latest win32 interim build is generally fresh within a day or two at http://fceux.com/zip -- If you are working with a developer to fix an issue affecting you then this is where you will find your fixed build. SDL: Scons is required to build from source. Requires SDL, libz, and zenity. Liblua5.1 and OpenGL are optional, but recommended. GFCEUX, a GTK2 GUI for fceux, is included in the source release. All non-windows users of the SDL port are reccommended to install and use this, unless you particullarly prefer the command-line. For instructions on installing on an Ubuntu or Debian system, check the howto at Ubuntuforums.
Version	Date	Description
2.1.2 win32 binary	04 November 2009	This is the latest official release
2.1.2 source	04 November 2009
2.1.1 win32 binary	29 July 2009
2.1.1 source	29 July 2009
2.1.0 i386 deb package	29 March 2009