Mednafen v1.28.0-UNSTABLE 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 v1.28.0-UNSTABLE Changelog:
Stricter parsing of the configuration file and numeric setting values, with error messages now containing line numbers when relevant.
Added setting "video.force_bbclear", default value of "0", which when set to "1" will force clearing of the backbuffer before drawing every frame.
Added setting "video.cursorvis", default value of "hidden", to allow for showing the windowing system's mouse cursor within Mednafen's window even when it's not required.
Implemented an M3U recursion limit of 9, adjustable by the new setting "cd.m3u.recursion_limit".
Implemented a limit of 25 on the total number of CD images loaded while processing M3U files, adjustable via the new setting "cd.m3u.disc_limit".
Added Zstandard decompression support to game loading, with both naked files("zst" extension) and ZIP archives.
Added support for loading CD images from ZIP archives when the "cd.image_memcache" setting is set to "1". The ZIP archive may be loaded directly, or indirectly via an M3U file. An M3U file may also exist within the ZIP archive, to allow loading multiple CD images from within that ZIP archive. However, loading from a ZIP archive within another ZIP archive is not supported.
Changed the naming of save games, save states, etc. for gzip-compressed games. Previously, a gzip-compressed file named like "whatever.nes.gz" would generate a save game named like "whatever.nes..sav", but will now generate a save game named like "whatever..sav", the same as if "whatever.nes" had been loaded instead of "whatever.nes.gz". The old behavior may be restored by setting the new undocumented setting "filesys.old_gz_naming" to "1".
SS: The emulated reset button mapped to Mednafen's reset command key(F10 default) will now respect the "input.ckdelay" setting.
SS: The VA0/VA1 motherboard's memory mapping behavior for Low-RAM is now emulated instead of VA2's, to fix a crash in "Myst" in the generator room.
SS: Fixed unresponsive input in "Discworld".
SS: Fixed startup abort to CD player screen in the Europe and USA releases of "Primal Rage".
SS: Fixed abort to CD player screen when trying to start a game demo in Gremlin Interactive's "Demo Disc".
SS: Fixed inability to skip the intro FMV in "Senkutsu Katsuryu Taisen: Chaos Seed".
SS: Fixed flickering title screen in the "Saturn Super Vol. 2" demo of "Golden Axe: The Duel".
SS: Fixed a regression introduced in 1.26.0-UNSTABLE that broke the CD audio player in the North America/Europe BIOS.
SS: Implemented emulation of the CD block Scan command, to allow the scan forward/backward functionality in the BIOS's CD audio player to work.
SS: Fixed a bug in the CD seek handling code that could cause more emulator frame pacing and sound buffer underrun issues than strictly necessary when CD image memory caching is not enabled, the default.
SS: Corrected a few inaccuracies in the relative timing between different SCSP EG rates and between different SCSP timer prescaler rates(probably with negligible audible effects in commercial game sound drivers).
VB: Added "left" and "right" options to the "vb.3dmode" setting, to allow for more easily showing only the left or right view.

Download: Mednafen v1.28.0-UNSTABLE x86
Download: Mednafen v1.28.0-UNSTABLE x64
Source: Here