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".
An index of releases can be found here.
|Library dependencies for Mednafen >= 0.9.23, plus the development package names for various distributions that need to be installed.|
|Debian Squeeze||Fedora Core 4|