Mednafen v0.9.21 WIP is released. Mednafen is a multi-game-system emulator, for various platforms, including emulation of the following systems:Atari Lynx,Famicom,GameBoy (Color),GameBoy Advance,Neo Geo Pocket (Color), NES(both NTSC and PAL),PC Engine/TurboGrafx 16 (CD) and SuperGrafx,PC-FX,WonderSwan (Color).

Mednafen v0.9.21 WIP changelog:

- Improved PSX emulation. - PSX emulation works on big-endian platforms now. - PSF1 playback now uses an idle loop detection hack, for much less host CPU usage. - Minor optimizations to NGP, VB, and GBA emulation when compiled for PowerPC platforms. - Preliminary support for SNSF playback. - Updated internal copy of libmpcdec; SV8 Musepack files are now supported.

Download: Mednafen v0.9.21 WIP
Source: Here