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Welcome to The Official Site of the MAME Development Team

What is MAME?

MAME is a multi-purpose emulation framework.

MAME’s purpose is to preserve decades of software history. As electronic technology continues to rush forward, MAME prevents this important "vintage" software from being lost and forgotten. This is achieved by documenting the hardware and how it functions. The source code to MAME serves as this documentation. The fact that the software is usable serves primarily to validate the accuracy of the documentation (how else can you prove that you have recreated the hardware faithfully?). Over time, MAME (originally stood for Multiple Arcade Machine Emulator) absorbed the sister-project MESS (Multi Emulator Super System), so MAME now documents a wide variety of (mostly vintage) computers, video game consoles and calculators, in addition to the arcade video games that were its initial focus.

License

The MAME project as a whole is distributed under the terms of the GNU General Public License, 2 (GPL-2.0), since it contains code made available under multiple GPL-compatible licenses. A great majority of files (over 90% including core files) are under the BSD-3-Clause License and we would encourage new contributors to distribute files under this license.

Please note that MAME is a registered trademark of Gregory Ember, and permission is required to use the "MAME" name, logo or wordmark.

MAME 0.244

25 May 2022

Given how many exciting updates have gone into MAME 0.244, it’s hard to believe it’s only been a month since the last release! Only one disk has been added to the Apple II software lists, but it comes with a very engaging story involving physically damaged media and manual data repairs. The Zilog Z80 CPU has had a bit of an overhaul this month, allowing more accurate memory access timings for the ZX Spectrum family. This fixes a lot of broken visual effects and other glitches. The HP 9000/300 series computers have had the necessary floppy disk image formats hooked up, allowing them to mount floppy disks from their software list.

MAME’s driver for JPM’s first CPU-based fruit machine platform, dating all the way back to the late 1970s, has been almost completely rewritten this month. Four games are now playable, albeit with minimal internal artwork. Colour video output has been implemented for Zilec’s Vortex. Don’t get too excited, though – while the approach they used to produce colourful graphics without adding any video memory is technically interesting, the results are very ugly and don’t make a bad game any better.

Other improvements in arcade emulation include:

  • Score display and diorama control outputs have been hooked up for Bubble Trouble (this means you’ll need updated artwork for Golly! Ghost! as well).
  • Layer offsets in Slap Fight and Alcon should be fixed, and cocktail mode now works for the original sets.
  • The communication board for Super Street Fighter II: The Tournament Battle is now supported, allowing it to actually run in eight-player tournament mode.

SDL builds (the default for Linux and macOS) now detect game controller reconnection. Note that due to limitations of SDL itself, MAME may confuse similar controllers, potentially causing issues if multiple controllers are disconnected at the same time. Issues using MIDI input or output with 64-bit Windows builds should be fixed.

You can read about everything else that’s happened in the whatsnew.txt file. As always, the source and 64-bit Windows binary packages are available from the download page.

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MAME 0.243

29 Apr 2022

Another month has passed, and it’s time for another MAME release! MAME 0.243 has a few fairly big internal changes, and while we’re working towards making MAME more future-proof, there will likely be some regressions in the short term. The most noticeable regression that we’re aware of is that rhythm games using DVD media on Konami’s Firebeat platform are now very unhappy with our lack of proper DVD drive emulation. If you find any other regressions, please report them – it’s a lot easier to fix things when we know they’re broken.

Remember the unreleased arcade version of Rise of the Robots, running on the RasterSpeed platform? This month sees support added for another game on the same hardware: Football Crazy. In a clear demonstration of the benefits of MAME’s modular architecture, this provides test cases yielding fixes for the CPU, serial controller and SCSI controller used in the system. Numerous games and computer systems using the same devices stand to benefit.

MAME’s floppy drive emulation system has had an overhaul this month. We think we’ve finally nailed down and fixed the issues that were causing bad data to be written by the Apple IIgs. Of course, it’s still a good idea to back up your precious disk images. There are lots of nice fixes for NES/Famicom cartridge support, making a whole lot of Chinese-language games playable. The driver for the NEC PC-8801 family has had an overhaul this month, giving more expansion options and better software compatibility. Also, several more early Rockwell electronic calculators are now emulated.

As always, there were plenty of bugs squashed this month, including Midway Seattle and Vegas stability issues, graphical glitches in The Karate Tournament, erratic joystick movement on the Apple IIgs, missing sounds in Looping, and quite a few incorrectly labelled DIP switches.

You can read about all the exciting development activity in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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MAME 0.242

01 Apr 2022

Today is a bittersweet day. After a quarter of a century, we’ve decided that it’s no longer in our best interests to distribute MAME as Open Source/Free Software. Wait, that’s not the right announcement… After many fruitful years, we’ve come to realise MAME has achieved everything it can. The project is now in maintenance mode, and there will be no new functionality or regular releases. Hang on, that can’t be right, either! Happy April Fools’ day!

We have an interesting release today in several ways. Yes, the rumours are true, after many years, we’ve added support for another LaserDisc-based arcade system. It’s a system that only ran a single game: Time Traveler, created by Rick Dyer at Virtual Image Productions, starring Stephen Wilber, and published by Sega. This full-motion video game consists of a near-constant stream of quick time events, utilising a mixture of live action video and computer-generated imagery. Although re-living the early ’90s corniness is pretty awesome, this is a milestone because it’s the first LaserDisc arcade game preserved using the Domesday86 Project toolchain. In short, this involves the use of custom hardware to record the raw radio frequency signal from a LaserDisc player’s laser pickup, and then decoding it in software. This frees you from the limitations of LaserDisc player demodulators and video capture devices. As well as better, more consistent video quality, this opens up possibilities like combining multiple captures to overcome disc degradation and laser pickup dropout.

In another first for emulation, MAME 0.242 adds support for systems based on Rockwell B5000 family microcontrollers. This includes several electronic toys from Mattel, and calculators from Rockwell themselves. You’ll also find the first working game based on a Sharp SM530 microcontroller: the Star Fox game watch from Nelsonic.

There are plenty of software list updates this month, including recently-released prototype dumps for Mega Drive, NES and Super NES, all the latest Apple II dumps, and some more of the steady stream of Commodore 64 cassettes. You’ll also see that a big batch of Amiga software has been promoted to working – that’s because the Amiga family has had an overhaul this month, and it’s paid off with substantial improvements in compatibility.

There’s lots more going on, in fact this was a record month for pull requests, with over a hundred and thirty merged, including quite a few from first-time contributors, as well as some regulars. It’s great to have you all with us! There are dozens of reported bugs fixed, too, with a particular emphasis on fixing up DIP switch labelling.

As always, you can read about all the bug fixes, newly supported systems and software, and other development in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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MAME 0.241

23 Feb 2022

Is it already the last Wednesday of the month again? That felt quick! Of course, that means it must be MAME 0.241 release day. This month you’ll get to play The Tower, a rather poor quality imitation of Crazy Climber running on the DECO Cassette system. There’s a brand new software list for the Tandy/Memorex VIS multimedia player. Keep in mind that this was effectively a ’286-based Windows PC with no disk cache running software from a CD-ROM drive. It shouldn’t come as a surprise that it wasn’t popular, earning the backronym “Virtually Impossible to Sell”. A three-player version of Wally wo Sagase! (based on the popular Where’s Wally? books) has also been found, dumped and emulated.

As well as an assortment of newly supported NES/Famicom cartridges, you’ll have a better experience with the Zapper lightgun, improved PPU (graphics) and APU (sound) emulation, and several fixes for the related coin-operated VS. System and PlayChoice-10 systems. Newly supported systems include some electronic toys from Entex and Mattel, and a couple more Fidelity chess computers. If you’re interested in scripting MAME, the Lua interface now exposes address space taps for intercepting emulated memory accesses, as well as debugger expressions, and a simpler way to discover general input types.

Of course, there’s lots more to explore. You can read all about newly dumped arcade bootlegs, prototype console games, bug fixes, and everything else in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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MAME 0.240

30 Jan 2022

As lunar new year draws near and we approach a quarter of a century since Nicola Salmoria released MAME to the public, it’s time for MAME 0.240 – the first release of the 2022 calendar year. Wait, what was that? A quarter of a century? Yes, on 5 February, it will be twenty-five years since MAME 0.1 was released, supporting just five Z80-based games. MAME is coming up to its silver jubilee! And what a long way we’ve come…

This month, we’ve added support for dozens more versions of the Igrosoft five-reel slot machines. But buried in there are the remaining versions of Nintendo Game & Watch series games (rare versions of Helmet, Judge and Mario’s Cement Factory), two more Elektronika games based on Nintendo programs, a German version of Exidy’s Mouse Trap, and the incredibly rare Mahjong Block Jongbou 2 from SNK.

In the software lists, there are a whole pile of recently dumped prototypes of console games, and some homebrew titles for the Bandai RX-78. That’s on top of the steady stream of Apple II floppies, Commodore 64 cassettes, FM Towns CDs, and newly supported NES and Famicom cartridges. Building on the work last month, the CD-i has received a few more fixes that improve performance and add support for more discs.

You can read about everything we’ve been busy with all month in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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MAME 0.239

29 Dec 2021

Did you think we’d let 2021 finish without a parting MAME release? MAME 0.239 is here, just in time for the new year. This release includes a fix for many subtle and not-so-subtle sound and music timing issues in games using Yamaha FM synthesis chips. The frame rate for Gaelco games has been adjusted to satisfy some wily protection checks, fixing crashes when continuing in Thunder Hoop and graphical issues in Squash. A big update for Philips CD-i emulation just made it in for this release, greatly improving the experience in a lot of games. Nintendo Famicom Disk System emulation has also seen some improvements this month.

This release is packed with even more Soviet re-skins of the Game & Watch Egg program, the latest Apple II dumps and cracks, another batch of Commodore 64 cassettes, and more exotic NES and Famicom cartridges. Milan Galcik, who’s been busy with the Elektronika hand-held games, has also completed a Slovak UI translation and updated the neglected Czech translation. Both genuine and cloned Apple II systems have had emulation updates this month, with a number of unique VTech Laser and Franklin ACE features now supported, and performance improvements for the Apple IIgs.

Of course, there’s lots more than we have time to talk about here, and you can read all about it in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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MAME 0.238

24 Nov 2021

You know what time it is? It’s time for MAME 0.238, our November release! After many years of waiting, the rare space shooter Monster Zero from Nihon Game is now playable. Despite the title, this game does not feature a three-headed space dragon. This release adds support for Fowling and Monkey Goalkeeper, two more Elektronika hand-held games built around the Egg/Mickey Mouse Game & Watch program.

There are a few changes to MAME’s UI and the debugger this month. Firstly, MAME is now less eager to reset your input configuration if you run it without connecting a game controller. Analog inputs support a few more configuration options, and we’ve added some (long overdue) documentation for the input configuration process. The timecode logging feature (used by people making gameplay videos) has been moved to a plugin, and debugger memory views now support octal data display, and octal or decimal address display.

Support for several Famicom controllers has been added or fixed this month, including the IGS Tap-tap Mat, Bandai Family Trainer, Bandai Power Pad, Bandai Hyper Shot, Konami Doremikko Piano Keyboard, and Konami Exciting Boxing air bag. Also involving peripheral support, the Acorn Archimedes drivers now support podule expansions, the Econet module slot, serial/parallel ports, and extension ROM sockets.

You can read about all the development activity this month in the whatsnew.txt file, or get the source and 64-bit Windows binary packages from the download page.

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