Save states from 0.8.x and earlier are not compatible with 0.9.x, as the save state format(and file extension) have changed. Additionally, save states from older 0.9.x releases may or may not work entirely correctly with newer 0.9.x releases(if there's a particularly big breakage, however, it will be noted in the release announcement).
Mednafen's configuration file name has changed to "mednafen-09x.cfg" for 0.9.x releases, due to a large number of backwards-incompatible setting-related changes.
When using ALSA sound output under linux, the "sound.device" setting "default" is Mednafen's default, AKA "hw:0", not ALSA's "default". If you want to use ALSA's "default", use "sexyal-literal-default".
For the Windows builds, Windows XP or newer required. Windows 8 and newer will work, but their use is discouraged unless Mednafen is running in fullscreen mode(for video lag and quality reasons). Using the 64-bit build is recommended, for better performance and functionality.
|Library dependencies for Mednafen >= 0.9.38, plus the development package names for various distributions that need to be installed.|
|Debian Squeeze||Fedora Core 4|