MAME v0.227 is released.

MAME v0.227 is released. MAME stands for Multiple Arcade Machine Emulator. When used in conjunction with images of the original arcade game's ROM and disk data, MAME attempts to reproduce that game as faithfully as possible on a more modern general-purpose computer. MAME can currently emulate several thousand different classic arcade video games from the late 1970s through the modern era.

What's news in MAME:
0.227 2020-12-31
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MAME Testers Bugs Fixed
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- 01807: [Graphics] (undrfire.cpp) cbombers: Some graphics are missing in attract mode. (cam900)
- 04905: [Flip Screen/Cocktail] (champbwl.cpp) champbwl: Video offset to the left when flip screen is enabled. (Ivan Vangelista)
- 05701: [Documentation] (model2.cpp) daytona and clones: System descriptions are not entirely accurate. (ArtLine)
- 07119: [Gameplay] (rampart.cpp) rampart, maybe rampartj and rampart2p: Late-game protection issues. (O. Galibert)
- 07435: [Save/Restore] Vector: Vector Many games do not return stably from save state. (Vas Crabb)
- 07746: [Compiling] macOS 11: Compiling on the Apple AArch64 DTK fails. (Miodrag Milanović)
- 07757: [Documentation] (vegas.cpp) nbashowt: Release year is incorrect. (PepsiBoy428)
- 07778: [Crash/Freeze] (vicdual.cpp) carnivalh, carnivalha: Game crashes after clearing first round. (David Haywood)
- 07782: [Documentation] (stv.cpp) ffreveng, ffrevng10: This game displays two different titles for two different markets. (Fortuna)
- 07783: [DIP/Input] (meadows.cpp) bowl3d: Some DIP switches labelled as Unused affect gameplay. (terencew)
- 07784: [Gameplay] (vulgus.cpp) vulgus and clones: Excessive verbose logging can cause performance issues. (Robbbert)
- 07785: [Documentation] (neogeo.cpp) marukodq: Title is not correct. (J.J.Boy)
- 07786: [Documentation] (metro.cpp) karatourj: Title is not correct. (J.J.Boy)
- 07790: [Graphics] (namcos22.cpp) propcycl: Zoom effect on score entry screen is misaligned. (hap)
- 07792: [Graphics] (segas16a.cpp) quartet, quarteta, quartet2, quartet2a: Moving floors are not displayed. (David Haywood)
- 07796: [Misc.] (megasys1.cpp) stdragon: High scores higher than one million points are not displayed correctly. (Carl)
- 07799: [Gameplay] (seattle.cpp) blitz99: Attract mode skips over animations. (Ted Green)
- 07803: [Sound] (m63.cpp) fghtbskt: AY-3-8910 sound is missing. (Ivan Vangelista)
- 07808: [Sound] (bwidow.cpp) spacduel, spacduel0, spacduel1: Some sounds are missing. (Tafoid)
- 07812: [DIP/Input] (quizpun2.cpp) quizpun2: Test mode doesn’t work. (AJR)
- 07813: [DIP/Input] (ksys573.cpp) gchgchmp: Player 2 Up and Right inputs are swapped. (danylopez123)
- 07815: [Sound] (balsente.cpp) sentetst: Sente Diagnostic Cartridge: Fails Sound Board Test. (AJR)
- 07817: [Crash/Freeze] (stfight.cpp) empcityfr: Game locks up at start. (Ivan Vangelista)
- 07820: [DIP/Input] (model1.cpp) wingwar360: Throttle (Pedal 1) doesn’t work at all. (Ivan Vangelista)
New working machines
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Black Touch II (Korea) [Jorge Silva, Fernando Oliveira, David Haywood]
dreamGEAR / JungleTac Plug 'N' Play 50-in-1 (DGUN-853) [David Haywood, Sean Riddle, Kamaal Brown]
dreamGEAR My Arcade Pac-Man Pocket Player (DGUNL-3227) [Sean Riddle]
dreamGEAR My Arcade Retro Micro Controller - 220 Built-In Video Games (DGUN-2869) [Zup, TeamEurope, Sean Riddle]
Excalibur / Nice Code The New York Times Sudoku [David Haywood, Sean Riddle, Kamaal Brown]
Hewlett-Packard HP 2641A [Gavin Scott, F.Ulivi]
Ingo Devices SL / Senca Code Lyoko (25-in-1 handheld) [KaruzoHikari, TeamEurope, David Haywood]
LexiBook / JungleTac / NiceCode Cyber Console Center 200-in-1 (JL2050) [TeamEurope, taizou]
Lexibook / JungleTac Lexibook JG7410 100-in-1 [David Haywood, TeamEurope]
MSI / Capcom / Sega Street Fighter II: Special Champion Edition (MSI Plug & Play) (Europe) [TeamEurope]
Nice Code 6-in-1 Sudoku Plug & Play [David Haywood, Sean Riddle]
Novag Super Nova (Novag) [hap, Berger]
The Open University Hektor II [Nigel Barnes, Binary Dinosaurs, Centre for Computing History]
Senario / JungleTac Vs Maxx 25-in-1 (VT03 hardware) [David Haywood, Sean Riddle, Kamaal Brown]
Tsurikko Penta [Phil Bennett, MetalliC, R. Belmont]
Ultimate Products / TaiKee Plug 'N' Play Rockstar Guitar / Guitar Rock (PAL) [Peter Wilhelmsen, David Haywood, TeamEurope]
Waveblaster-based expander [O. Galibert]
WinFun / JungleTac Joypad 65 [David Haywood, Sean Riddle, Kamaal Brown]
WinFun / JungleTac Joystick 30 [David Haywood, Sean Riddle, Kamaal Brown]
New working clones
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http://www.mamedev.org/

http://www.emucr.com/2020/12/mame-v0227.html