Mednafen v0.9.27 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 v0.9.27 WIP Changelog:

-- 0.9.27-WIP: -- December 20, 2012: Removed some old unused code from the memory debugger. PSX: The debugger's disassembler will now pull instructions from the instruction cache, if it's valid(and fall back to the memory map data if it's not). NES: Fixed a bug in the FDS state loading routine that could cause sound issues(wrong volume of FDS sound channel). NES: Replaced a floating-point filter used when expansion sound is in use with a 64-bit fixed-point integer math filter, to fix a problem of massive performance degradation in some circumstances(probably due to denormals). NES: Fixed a bug that was causing a crash when Game Genie emulation was enabled while trying to emulate an FDS game. Don't make use of errno in FileWrapper::read when handling an unexpected EOF. NES, SNES: Replaced usage of stdio file access with FileStream usage. December 19, 2012: Fixed a startup multithreading race condition with QuickTime and WAV file recording. PC-FX: Resolved a few compiler warnings. Replaced usage of stdio file access with FileStream usage in: Memory debugger. NGP FLASH memory saving/loading routines. December 17, 2012: NES: Added setting "nes.correct_aspect". Attempt to open a Linux (joystick) event device read-only if opening it for read+write fails, so at least some of the enhanced functionality will be available on Linux distributions with partially broken device permissions. December 16, 2012: PSX: Run EXE-loading MIPS binary code from a cacheable segment so it doesn't take so long to run. December 15, 2012: SNES: Changed frame/system synchronization point logic, to reduce input latency by 1 video frame(~17ms). SNES: The setting "snes.correct_aspect" setting now supports the unique PAL aspect ratio with PAL games(rather than just correcting the aspect ratio per NTSC as before) SNES: Fixed a bug that was causing distorted vertical scaling with PAL games. December 12, 2012: PSX: Improved CDC "ID" command emulation, fixes a problem with music in "WipEout 3". PSX: Changed how end-of-disc is handled while CD-DA is playing, per tests on a PS1; fixes a major problem with "Wu-Tang - Shaolin Style" during its startup. December 11, 2012: PSX: Added a kludge to the CDC logical seek emulation code to fix the problem of missing music in "Gran Turismo 1". PSX: More DMA emulation revising. December 10, 2012: PSX: Force DMA channel 6's channel control register bit1 to 1, per tests on a PS1. December 9, 2012: PSX: Added use of MDFN_LIKELY() and MDFN_UNLIKELY() to the CPU core. Added MDFN_LIKELY() and MDFN_UNLIKELY() macros to provide crude branch prediction hints to the compiler. PSX: Improved DMA controller emulation, per tests on a PS1 and nocash documentation. Fixes major problems with "Final Fantasy 7", "Final Fantasy 9", "Chrono Cross", "Legacy of Kain - Soul Reaver", and "Dragon Quest 7". December 8, 2012: PSX: Added preliminary instruction cache emulation, fixes problems with "Formula One 99", "Formula One 2000", and "Formula One 2001". PSX: Corrected the value in the CPU product ID register. December 5, 2012: PSX: Improved GPU info control port command emulation, per tests on a PS1. PSX: Reset more GPU state on software(via control port) reset, per tests on a PS1. December 2, 2012: PSX: Initialize NTSC vertical and horizontal GPU display timings properly on software reset(via the GPU control port), per tests on a PS1(the horizontal timings might not be 100% correct, but they probably are). PSX: Increased the amount of NTSC horizontal overscan shown. PSX: Revamped GPU vertical display timing model, per tests on a PS1(the old model was Quite Wrong), and made the visible vertical 240-pixel "viewport" match standard PS1 NTSC game vertical timings. PSX: Ignore lower bit of the GPU framebuffer X readout coordinate, per tests on a PS1. Made CUE sheet parser slightly stricter. Added setting, "cd.image_memcache", default value of "0", that when enabled will cause any referenced data files in CUE and TOC sheets to be loaded entirely into memory on startup, and cause the non-multithreaded CD reader interface to be used rather than the reader interface that uses an additional thread, for that emulated CD. November 16, 2012: Replaced various instances of "__attribute__((unused))" with MDFN_NOWARN_UNUSED, a macro defined in types.h. Removed nonutilized file "git-virtb.h". November 13, 2012: PCE_FAST: Comment out a debug print statement in the CPU emulation core. PCE_FAST: Fixed a heap overflow bug when loading excessively large ROM images. November 6, 2012: Fixed a compiler warning in the Linux joystick code that could hypothetically be treated as an error by some compiler(configurations). In the Linux joystick code, Directly include instead of relying on it being included by . November 5, 2012: Removed internal input button data encoding method "IDIT_BUTTON_BYTE", as the sole user of it(Family Keyboard) has been changed to not use it, and it is wasteful(especially with netplay). NES: Simplified Family Keyboard emulation, and compacted the key state. NES: Removed unused members from emulated input device definition structures. November 4, 2012: Don't error out if the corresponding evdev to a jsdev device can't be opened, and instead rely on legacy jsdev functionality only, as Mednafen versions prior to 0.9.25-WIP would. November 3, 2012: The "SDL" audio driver/output method now respects the "sound.period_time" setting. November 2, 2012: PCE: Fixed a rather obvious major problem with the (incomplete/preliminary) MCGenjin emulation code. Added missing sizeof(RAWINPUTDEVICELIST) parameter to a GetRawInputDeviceList() call in the Win32 DirectX joystick code. It's probably not strictly necessary now when viewed in context, but may be in the future if Microsoft does something weird, which Microsoft tends to do, so better safe than sorry. Thanks to zeromus for pointing it out. October 28, 2012: Fixed typos that broke compilation without internal CJK fonts. Thanks to zeromus for pointing it out. October 25, 2012: VB: Completely removed the deprecated and disabled code for support for ".bin" file extension. NES: Added support for iNES mapper 37. October 24, 2012: NES: Changed filter parameters for a "nes.soundq" setting of "-2", increasing the computational complexity slightly, so that games like "Solstice" and "Mega Man 2" don't sound like whining messes. October 19, 2012: Cleaned up TODO file a bit, migrating some of the useful data into the general documentation. PCE_FAST: Brought aspect ratio correction in line with the "pce" module(which is about what it should be).

Download: Mednafen v0.9.27 WIP
Source: Here