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'''FreeJ2ME''' is a simple '''[[Cellphone_emulators#J2ME (Java 2 Micro Edition)The Sega CD was released on October 15, 1992 and retailed for {{Inflation|USD|299.99|Java 2 Micro Edition]]''' emulator with 1992}} and had a focus on J2ME gamesMotorola 68000 CPU at 12.5 MHz and 64 kbit of RAM. It The Sega 32X was designed to run released on WindowsNovember 21, desktop Linux, and on the Raspberry Pi 3 using Libretro and Retroarch as provided by RetroPie1994 for {{Inflation|USD|159.99|1994}}. A free J2ME emulator It had 2 SH-2 RISC CPUs at 23 MHz with libretro, awt, sdl2 frontends 256KB of RAM and javafx frontends256KB of VRAM.
==Overview==FreeJ2ME supports some Genesis emulation is very good, with a high degree of game compatibility (many of them claiming nearly 100% compatibility with commercial games not playable using MicroEmulator , including Virtua Racing). They are available on many platforms. Many Genesis emulators also feature compatibility with the [[Master System emulators|Sega Master System]] (SMS), and KEmulator, though it does not support every game those playthe [[Master System emulators|Game Gear]] (GG) as well as earlier Sega consoles. At Genesis-based arcade boards and the moment[[Sega Pico]] are still sketchy, it's best to have all three if you're interested in those types of gameshowever.
Some ==Emulators=={| class="wikitable" style="text-align:center;"! scope="col"|Name! scope="col"|Platform(s)! scope="col"|Latest Version! scope="col"|CD! scope="col"|32X! scope="col"|[[Sega Pico|Pico]]! scope="col"|[[Libretro|Libretro Core]]! scope="col"|<abbr title="Free/Libre and Open-Source Software">FLOSS</abbr>! scope="col"|Active! scope="col"|[[Recommended Emulators|Recommended]]|-!colspan="10"|PC|-|[[BlastEm]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://www.retrodev.com/blastem/changes.html {{BlastEmVer}}]|{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}|-|[[Exodus]]|align=left|{{Icon|Windows}}|[http://www.exodusemulator.com/index.php/downloads/current-release {{ExodusVer}}]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✓}}|-|[[Genesis Plus GX]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|{{GenPlusGXVer}}|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}}* ||{{{✗}} <ref group=N name=noncomm>While the source is available, its software license explicitly forbids commercial usage of any kind. Thus, it does not qualiy as Free (see the Free Software Foundation [https://www.gnu.org/philosophy/free-sw.html#selling definition]), nor as Open source (see the Open Source Initiative [https://opensource.org/osd definition]).</ref> ||{{✓}} ||{{✓}}|-|[[BizHawk]]|align=left|{{Icon|Windows}}|[http://tasvideos.org/BizHawk/ReleaseHistory.html {{BizHawkVer}}]|{{✓}} ||{{✓}} ||{{✗}} ||{{✓}} ||? ||{{✓}} ||{{✓}}|-|[[Kega Fusion]]|align=left|{{Icon|Windows|Linux|macOS}}|[http://www.carpeludum.com/kega-fusion 3.64]|{{✓}} ||{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}}|-|[[PicoDrive]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}]|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✗}}<ref group=N name=PicoDrive>Only recommended for running 32X software as a cross-platform alternative to Kega Fusion.</ref>|-|[[FinalBurn Neo]]|align=left|{{Icon|Windows|Linux|macOS}}|[https://github.com/finalburnneo/FBNeo/releases/latest Stable] [https://ci.appveyor.com/project/tmaul/fbneo-kbhgd/branch/master WIP builds]|{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✗}}|-|[[MAME]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://www.mamedev.org/release.html {{MAMEVer}}]|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✗}}|-|[http://segaretro.org/Gens/GS Gens/GS]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://www.dusers.drexel.edu/gitweb/gitweb.cgi/~korth/gens.git r7]|{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✗}}|-|[http://dgen.sourceforge.net/ DGen]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://sourceforge.net/projects/dgen/files/dgen/ 1.33]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✗}}|-|[[Genecyst]]|align=left|{{Icon|DOS}}|[https://web.archive.org/web/20070205202050/http://www.zophar.net/genecyst/gcystxxx.zip x.xx]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}}|-|[[GENS]]|align=left|{{Icon|Windows|Linux|BeOS}}|[http://gens.me/downloads.shtml 2.14]|{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✗}}|-|[[higan]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[https://github.com/higan-emu/higan/releases {{higanVer}}]|{{~}} ||{{✗}} ||{{✗}} ||{{✓}}<small>(bsnes)</small> ||{{✓}} ||{{✓}} ||{{✗}}|-|Megado|align=left|{{Icon|Windows|Linux}}|[https://github.com/merwaaan/megado git]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}|-|Regen|align=left|{{Icon|Windows|Linux}}|[http://aamirm.hacking-cult.org/www/regen.html 0.972]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}|-|AloneMD|align=left|{{Icon|Windows}}|[https://up1.xwikisas.com/#650YS5cXMSc7sGflY1dqeg 1.0.0]|{{✓}} ||{{✗}} ||{{✓}} ||{{✓}} ||{{✗}} ||{{✓}} ||?|-!colspan="10"|Mobile / ARM|-|[[Genesis Plus GX]]|align=left|{{Icon|Android|iOS|Linux|Pandora}}|{{GenPlusGXVer}}|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}|-|MD emu|align=left|{{Icon|Android|Pyra}}|[https://pyra-handheld.com/repo/apps/77 1.5.46.01 Pyra]|{{✓}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✓}}|-|[[PicoDrive]]|align=left|{{Icon|Android|iOS|Linux|Symbian}}{{Icon|Pandora|Gizmondo|GP2X|Wiz}}|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}]|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}<ref group=N name=PicoDrive />|-!colspan="10"|Consoles|-|NeoGenesis|align=left|{{Icon|Xbox}}|[https://digiex.net/threads/neogenesis-v25-download-sega-genesis-megadrive-32x-segacd-megacd-emulator.13698 V25]|{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✓}}|-|[[Genesis Plus GX]]|align=left|{{Icon|GCN|Xbox360|Wii|3DS}}|[https://bitbucket.org/eke/genesis-plus-gx/downloads {{GenPlusGXVer}}]<br/>[https://digiex.net/threads/retroarch-360-0-9-8-3-download-sega-sens-gameboy-finalburn-emulator-for-xbox-360.12395 RetroArch 360 0.9.8.3]|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}|-|[[PicoDrive]]|align=left|{{Icon|PS2|PSP|3DS}}|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}]<br/>[https://www.ps2-home.com/forum/viewtopic.php?f=99&t=1710 PicoDrive 1.51b]|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}|-|[[Virtual Console]]|align=left|{{Icon|Wii}}|N/A|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✓}}|-|Sega Genesis Plus|align=left|{{Icon|Xbox360}}|[https://digiex.net/threads/sega-genesis-plus-libexnon-genesis-megadrive-emulator-for-xbox-360-download.9936 Libxenon]|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}|}<references group=N /> <nowiki>* Available exclusively as a libretro core</nowiki> ===Comparisons===;[[Genesis Plus GX]]:A solid emulator for the Sega Genesis / Sega Master System / Sega CD / Game Gear. The only things it lacks are 32X and Pico support, and a native desktop port. The only way to get this emulator on the desktop is to use the libretro core, which allows for all the benefits of RetroArch like shaders, dynamic sync, and other enhancements. The version used in [[BizHawk]] adds features for speedrunners.:;[https://github.com/libretro/Genesis-Plus-GX-Wide Genesis Plus GX Wide]: Custom fork of Genesis Plus GX available as a libretro core, it includes experimental widescreen options. Sega CD/Mega CD games are currently unsupported.;[[Kega Fusion]]:The project of an employee with previous experience at Sega. Kega Fusion has high compatibility, is easy to use and has plugin-based filter support but it has some issues on newer versions of Windows which can be solved with compatibility settings.;[[PicoDrive]]:Strongly prioritizes performance over accuracy. Compatibility and accuracy isn't as good as Genesis Plus GX but it's useful on very underpowered systems like the Raspberry Pi Zero. Currently the first and only run cross-platform option for 32X and Pico games.;[[Exodus]]:Think [[bsnes]], but for the Genesis. Even though higan is also getting into the Genesis game, Exodus has already achieved cycle-accuracy at specific resolutionsthe familiar cost of high system requirements. It is the newest Genesis emulator and is far from complete.;[http://aamirm.hacking-cult.org/www/regen.html Regen]:A focus on accuracy has earned it high compatibility with games, but it does not emulate the Sega CD and 32X. It also allows [[overclocking]].;[[BlastEm]]:Aims for cycle-accuracy but unlike Exodus, aims for lower system requirements. It has substantially higher compatibility than Exodus, but it should be noted that the last and current official release has inaccurate color emulation.;[[GENS]]:Close to Kega Fusion in features and compatibility, but has largely been surpassed by better emulators. There are many different forks and iterations of Gens, so your experience will differ quite a lot depending on which version you use.;[[higan]]:Also developing cycle-accurate Genesis emulation, akin to its very own [[Super Nintendo emulators|SNES emulator]] bsnes. It's promising but incomplete. However, it can be used in the latest builds.;[[MAME]]:Has the parent drivers <code style="color:green">genesis</code>, <code style="color:green">sms</code>, <code style="color:green">gamegear</code>, <code style="color:darkred">segacd</code>, and <code style="color:darkred">32x</code>. PerGreen drivers are reported as OK, where red ones are reported as not working as of version 0.200. ==Lock-On Emulation==Lock-On Technology is a unique feature found on Sonic & Knuckles cartridges for the Sega Mega Drive/Genesis that allowed a player to connect an older game configuration is to the cartridge's pass-through port for extended or altered gameplay. * With Sonic 3: Unlocks an alternate version of Sonic 3 with more levels.* With Sonic 2: Unlocks an alternate version of Sonic 2 with playable Knuckles.* With Sonic 1: Unlocks the Blue Sphere minigame with a level select to all possible levels. The Sonic & Knuckles cartridge can lock on to other cartridges: * Smaller than 2MB: Will play a single random level from the Blue Sphere minigame generated from data in the header.* Bigger than 2MB: Will boot to Sonic & Knuckles.* Has Battery Pack: All save data will be wiped out. Most emulators don't support Lock-On save for Genesis Plus GX, but there are pre-combined ROMs for the Sonic trilogy available from online that can be played as a regular Megadrive ROM on any emulator and still work. The Sonic 3 Complete romhack also achieves the same purpose. Genesis Plus GX's [[RetroArch]] core includes true Lock-On emulation. From the Core Options menu , you can enable the Lock-On feature for either Sonic & Knuckles, Game Genie, or the Action Replay (by pressing escPro)-- the latter two using a different technology but with similar effects. Setting this option to anything other than "Off" will enable Lock-on to the cartridge you're currently playing as. Preferences are saved and After resetting, the game will automatically loadboot in Lock-On mode. The following files need to be under the directory for BIOS files (usually "system"):* sk.bin (Sonic & Knuckles (2 MiB) ROM)* sk2chip.bin (Sonic & Knuckles UPMEM (256 KiB) ROM): If you can't find it online, extract it with a hex editor from a pre-combined Sonic 2 & Knuckles ROM from offset 00300000 to the end of the ROM.
Games automatically scale with For GG/AR, the window sizefiles needed are areplay.bin and ggenie.bin, making it easy to play games designed for smaller screen sizesbut most emulators support cheat codes from these natively.
The Java portion can be built using Apache Ant with the build.xml file provided. The Libretro core can be built using the build.sh script. Installation instructions for the Libretro core for RetroPie are included.==Mega Drive Plus / Genesis Plus==
==Futures==* Full Screen The Mega Drive Plus / Scaling* Sound* PerGenesis Plus (sometimes abbreviated as MD+) is a special mode for certain Genesis games that use enhanced CDDA tracks with a Sega CD. This was not used in any official games, however, the mode itself was first used in the first batch of Pier Solar releases. This feature was been [https://downloads.terraonion.com/public/MegaSD_DEV_Manual.pdf documented] to be used on Terraonion's Mega SD flash cartridge, to give similar effects for Genesis games in a way how MSU-game configuration* Optional Libretro core1 does in patched SNES games.
Further clarify licensing issues
{{Infobox emulatorconsole|title = Sega Genesis / Mega Drive|logo = FreeJ2MERS39200_Megadrive.png|logowidth image = Sega-Genesis-Mk2-6button.jpg|image2 = 150Sega-Nomad-Front.jpg|version imagecaption = [https'''Top:''' PAL Sega Mega Drive.<br/>'''Middle:''' Sega Genesis Model 2 with 6-button controller.<br/sourceforge>'''Bottom:''' Sega Genesis Nomad, portable variation.net/projects/freej2me/files/latest/download Sourceforge]|active = Yes|platform developer = [[Emulators on PC|Windows:Sega]], Linux, |type = [[Emulators on macOS:Category:Home consoles|macOSHome video game console]], Raspberry Pi (via libretro)|target generation = [[Cellphone_emulators#J2ME (Java 2 Micro Edition):Category:Fourth-generation video game consoles|Java 2 Micro EditionFourth generation]]|developer release = David Richardson, Saket Dandawate1988|license discontinued = GNU GPLv31997|source predecessor = [https://github.com/hex007/freej2me GitHub[Master System emulators|Master System]]|website successor = [http://www.neocomputer.org/projects/j2me FreeJ2ME[Sega Saturn emulators|Saturn]]|prog-lang emulated = Java{{✓}}
}}
The '''[[gametech:Sega_Genesis|Sega Genesis]]''' is a 16-bit, fourth-generation console released by [https://en.wikipedia.org/wiki/Sega Sega] in Japan on October 29, 1988 and in the US on August 14, 1989. It had a Motorola 68000 CPU at 7.6 MHz and a Zilog Z80 at 3.58 MHz. In other regions, it was known as the '''Mega Drive'''. It had several add-ons, including the Sega CD (a CD add-on, called Mega CD outside America) and the 32X (a 32-bit, cartridge-based add-on).
Currently, no Genesis + Sega CD emulators feature this function, although there is [https://github.com/ekeeke/Genesis-Plus-GX/issues/297 plans to be added] in Genesis Plus GX. ==DownloadExternal links=={| cellpadding* [http://wiki.megadrive.org/index.php?title="4"|Main_Page MegaDrive Development Wiki] -A Wiki about every technical aspect of the SEGA MegaDrive hardware and software. Its aim is to provide the most detailed, accurate and up to date information, to help homebrew development and repairs.|align=center|{{Icon|Win|Lin|LiA}}* [http://segaretro.org/Category:Mega_Drive_emulators Mega Drive emulators] on Sega Retro|* [https://githubarchive.comorg/hex007details/freej2me '''Github Release'''sega_genesis_library ARCHIVE.ORG Console Library: Sega Genesis]|{{Sega}}
[[Category:EmulatorsConsoles]][[Category:Mobiles emulatorsHome consoles]][[Category:Cellphone emulatorsSega consoles]][[Category:Windows emulation softwareSega Genesis emulators|*]][[Category:Linux emulation softwareFourth-generation video game consoles]]
