Difference between revisions of "Sega Genesis emulators"

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The Sega CD was released on October 15, 1992, and retailed for {{Inflation|USD|299.99|1992}} and had a Motorola 68000 CPU at 12.5 MHz and 64 kbit of RAM. The Sega 32X was released on November 21, 1994 for {{Inflation|USD|159.99|1994}}. It had 2 SH-2 RISC CPUs at 23 MHz with 256KB of RAM and 256KB of VRAM.
 
The Sega CD was released on October 15, 1992, and retailed for {{Inflation|USD|299.99|1992}} and had a Motorola 68000 CPU at 12.5 MHz and 64 kbit of RAM. The Sega 32X was released on November 21, 1994 for {{Inflation|USD|159.99|1994}}. It had 2 SH-2 RISC CPUs at 23 MHz with 256KB of RAM and 256KB of VRAM.
  
Genesis emulation is very good, with a high degree of game compatibility (many of them claiming nearly 100% compatibility with commercial games, 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 the [[Master System emulators|Game Gear]] (GG) as well as earlier Sega consoles. Genesis-based arcade boards and the [[Sega Pico]] are still sketchy, however.
+
Genesis emulation is very good, with a high degree of game compatibility (many of them claim nearly 100% compatibility with commercial games, 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 the [[Master System emulators|Game Gear]] (GG) as well as earlier Sega consoles. However, genesis-based arcade boards and the [[Sega Pico]] are still sketchy.
  
 
==Emulators==
 
==Emulators==
Line 39: Line 39:
 
|[[BlastEm]]
 
|[[BlastEm]]
 
|align=left|{{Icon|Windows|Linux|macOS}}
 
|align=left|{{Icon|Windows|Linux|macOS}}
|[https://www.retrodev.com/blastem/changes.html {{BlastEmVer}}] [https://www.retrodev.com/blastem/nightlies/ Nightly builds]
+
|[https://www.retrodev.com/blastem/nightlies/ Nightly builds] <br/>[https://buildbot.libretro.com/nightly/ libretro core]<br/>[https://www.retrodev.com/blastem/changes.html {{BlastEmVer}}]
|{{~}}[WIP] ||{{✗}} ||{{✗}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}
+
|{{✓}}<ref group=N name=blastemCD>Recent [https://www.retrodev.com/blastem/nightlies/ blastem-nightly builds] supports Sega CD</ref> ||{{}}[https://old.reddit.com/r/emulation/comments/b6ktic/blastem_genmd_emu_062_released/ejlgfi0/ *] ||{{✗}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}
 
|-
 
|-
 
|[[Genesis Plus GX]]
 
|[[Genesis Plus GX]]
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
|{{GenPlusGXVer}} [https://buildbot.libretro.com/nightly/windows/x86_64/latest/ libretro core]
+
|[https://buildbot.libretro.com/nightly/ libretro core]
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} <ref group=N name=libretroonly>On some platforms, this emulator is ''only'' available as a [https://buildbot.libretro.com/nightly/windows/x86_64/latest/ libretro core] ([https://tasvideos.org/Bizhawk/Libretro bizhawk compatible]). </ref> ||{{✗}} <ref group=N name=noncomm>Due to using a [[Licensing#Non-commercial licenses|non-commercial license]]. Source code is still publicly available.</ref> ||{{✓}} ||{{✓}}
+
|{{✓}} ||{{✗}}[https://github.com/ekeeke/Genesis-Plus-GX/issues/64 *] ||{{✗}} ||{{✓}} <ref group=N name=libretroonly>On some platforms, this emulator is ''only'' available as a [https://buildbot.libretro.com/nightly/windows/x86_64/latest/ libretro core]. </ref> ||{{✗}} <ref group=N name=noncomm>Due to using a [[Licensing#Non-commercial licenses|non-commercial license]]. Source code is still publicly available.</ref> ||{{✓}} ||{{✓}}
 +
|-
 +
|[[PicoDrive]]
 +
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
 +
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}] <br/>[https://buildbot.libretro.com/nightly/ libretro core]
 +
|{{✓}} ||{{✓}} ||{{~}} <ref group=N name=picoinput>PicoDrive Libretro/BizHawk version doesn't have stylus and turn page support, while the Windows standalone version does. </ref> ||{{✓}} <ref group=N name=libretroonly /> ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 +
|-
 +
|[[ares]]
 +
|align=left|{{Icon|Windows|Linux|macOS}}
 +
|[https://github.com/ares-emulator/ares/releases {{aresVer}}]
 +
|{{✓}}<ref group=N name=aresCD>[https://old.reddit.com/r/emulation/comments/xs5tol/ares_v130_released_multi_system_cross_platform/iqmia3y/ Needs firmware v2.00, there are issues using older versions.] </ref> ||{{✓}} ||{{✗}}[https://github.com/ares-emulator/ares/issues/833 *] ||{{✗}}||{{✓}}||{{✓}}||{{✓}}
 
|-
 
|-
 
|[[Kega Fusion]]
 
|[[Kega Fusion]]
 
|align=left|{{Icon|Windows|Linux|macOS}}
 
|align=left|{{Icon|Windows|Linux|macOS}}
 
|[http://www.carpeludum.com/kega-fusion 3.64]
 
|[http://www.carpeludum.com/kega-fusion 3.64]
|{{}} ||{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{}}
+
|{{~}}<ref group=N name=kegaCD>While it supports Sega CD emulation, there is notable audio sync issues. Kega is not recommended for CD emulation.</ref> ||{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{~}}
 
|-
 
|-
|[[PicoDrive]]
+
|[http://segaretro.org/Gens/GS Gens/GS]<br/><small>derived from GENS</small>
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}] [https://buildbot.libretro.com/nightly/windows/x86_64/latest/ libretro core]
+
|[http://www.dusers.drexel.edu/gitweb/gitweb.cgi/~korth/gens.git r7]
|{{✓}} ||{{✓}} ||{{}} ||{{}} <ref group=N name=libretroonly /> ||{{}} <ref group=N name=noncomm /> ||{{}} ||{{}}
+
|{{✓}} ||{{✓}} ||{{}} ||{{}} ||{{}} ||{{}} ||{{~}}
 
|-
 
|-
 
|[[BizHawk]]
 
|[[BizHawk]]
 
|align=left|{{Icon|Windows|Linux}}
 
|align=left|{{Icon|Windows|Linux}}
|[http://tasvideos.org/BizHawk/ReleaseHistory.html {{BizHawkVer}}]
+
|[http://tasvideos.org/BizHawk/ReleaseHistory.html {{BizHawkVer}}] <br/>[https://gitlab.com/TASVideos/BizHawk/-/pipelines Dev builds]
|{{✓}} ||{{✓}} ||{{}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{✓}}
+
|{{✓}} ||{{✓}} ||{{~}} <ref group=N name=picoinput /> ||{{✓}} ||{{✓}} ||{{✓}} ||{{~}}
 +
|-
 +
|[[MAME]]
 +
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
 +
|[http://www.mamedev.org/release.html {{MAMEVer}}]
 +
|{{~}} ||{{~}} ||{{~}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{~}}
 
|-
 
|-
 
|[[Exodus]]
 
|[[Exodus]]
 
|align=left|{{Icon|Windows}}
 
|align=left|{{Icon|Windows}}
 
|[http://www.exodusemulator.com/index.php/downloads/current-release {{ExodusVer}}]
 
|[http://www.exodusemulator.com/index.php/downloads/current-release {{ExodusVer}}]
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{~}}
+
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{}}
 
|-
 
|-
|[[ares]]
+
|[[GENS]]
|align=left|{{Icon|Windows|Linux|macOS}}
+
|align=left|{{Icon|Windows|Linux|BeOS}}
|[https://github.com/ares-emulator/ares/releases {{aresVer}}]
+
|[http://gens.me/downloads.shtml 2.14]
|{{✓}} ||{{✓}} ||{{✗}} ||{{✗}}||{{✓}}||{{}}||{{~}}
+
|{{✓}} ||{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{}} ||{{}}
 
|-
 
|-
|[[MAME]]
+
|[[higan]]
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
 
|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}
|[http://www.mamedev.org/release.html {{MAMEVer}}]
+
|[https://github.com/higan-emu/higan/releases {{higanVer}}]
|{{~}} ||{{~}} ||{{~}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{~}}
+
|{{~}} ||{{✗}} ||{{✗}} ||{{}} ||{{✓}} ||{{✗}} ||{{✗}}
 +
|-
 +
|AloneMD
 +
|align=left|{{Icon|Windows}}
 +
|[https://standalones.dev 1.0.2]
 +
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✓}} ||?
 
|-
 
|-
 
|[[FinalBurn Neo]]
 
|[[FinalBurn Neo]]
 
|align=left|{{Icon|Windows|Linux|macOS}}
 
|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]
+
|[https://github.com/finalburnneo/FBNeo/releases/latest Stable] <br/>[https://ci.appveyor.com/project/tmaul/fbneo-kbhgd/branch/master WIP builds]
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✗}}
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✗}}
|-
 
|[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]
 
|[http://dgen.sourceforge.net/ DGen]
Line 101: Line 116:
 
|[https://segaretro.org/KGen 034b]<br/>[https://segaretro.org/KGen98 9804]
 
|[https://segaretro.org/KGen 034b]<br/>[https://segaretro.org/KGen98 9804]
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}}
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}}
|-
 
|[[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}}]
 
|{{~}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✓}} ||{{✗}}
 
 
|-
 
|-
 
|Megado
 
|Megado
Line 121: Line 126:
 
|[http://aamirm.hacking-cult.org/www/regen.html 0.972]
 
|[http://aamirm.hacking-cult.org/www/regen.html 0.972]
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}
|-
 
|AloneMD
 
|align=left|{{Icon|Windows}}
 
|[https://standalones.dev 1.0.2]
 
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} ||{{✓}} ||?
 
 
|-
 
|-
 
!colspan="10"|Mobile / ARM
 
!colspan="10"|Mobile / ARM
Line 131: Line 131:
 
|[[Genesis Plus GX]]
 
|[[Genesis Plus GX]]
 
|align=left|{{Icon|Android|iOS|Linux|Pandora}}
 
|align=left|{{Icon|Android|iOS|Linux|Pandora}}
|{{GenPlusGXVer}} [https://buildbot.libretro.com/nightly/android/latest/ libretro core]
+
|[https://buildbot.libretro.com/nightly/android/latest/ libretro core]
 
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} <ref group=N name=libretroonly /> ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} <ref group=N name=libretroonly /> ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 
|-
 
|-
Line 142: Line 142:
 
|align=left|{{Icon|Android|Pandora|Gizmondo|Wiz}}<br/>{{Icon|GP2X}}
 
|align=left|{{Icon|Android|Pandora|Gizmondo|Wiz}}<br/>{{Icon|GP2X}}
 
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}] [https://buildbot.libretro.com/nightly/android/latest/ libretro core]
 
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}] [https://buildbot.libretro.com/nightly/android/latest/ libretro core]
|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} <ref group=N name=libretroonly /> ||{{}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
+
|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} <ref group=N name=libretroonly /> ||{{}} <small>(NDS)</small> <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 
|-
 
|-
 
!colspan="10"|Consoles
 
!colspan="10"|Consoles
Line 153: Line 153:
 
|[[Genesis Plus GX]]
 
|[[Genesis Plus GX]]
 
|align=left|{{Icon|GCN|Xbox360|Wii}}
 
|align=left|{{Icon|GCN|Xbox360|Wii}}
|[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]
+
|[https://bitbucket.org/eke/genesis-plus-gx/src/master/builds/ git]<br/>[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 /> ||{{✓}} ||{{✓}}
 
|{{✓}} ||{{✗}} ||{{✗}} ||{{✓}} ||{{✗}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 
|-
 
|-
 
|[[PicoDrive]]
 
|[[PicoDrive]]
|align=left|{{Icon|PS2|Wii}}<br/>{{Icon|PSP}}
+
|align=left|{{Icon|PS2|Wii}}<br/>{{Icon|PSP}}<br/>{{Icon|NDS}}<br/>{{Icon|3DS}}
 
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}]<br/>[https://www.ps2-home.com/forum/viewtopic.php?f=99&t=1710 PicoDrive 1.51b]<br/>[https://retroarch.com/?page=platforms {{RetroArchVer}}]
 
|[http://notaz.gp2x.de/pico.php {{PicoDriveVer}}]<br/>[https://www.ps2-home.com/forum/viewtopic.php?f=99&t=1710 PicoDrive 1.51b]<br/>[https://retroarch.com/?page=platforms {{RetroArchVer}}]
|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{}} <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
+
|{{✓}} ||{{✓}} ||{{✓}} ||{{✓}} ||{{}} <small>(NDS/3DS)</small> <ref group=N name=noncomm /> ||{{✓}} ||{{✓}}
 
|-
 
|-
 
|[[Virtual Console]]
 
|[[Virtual Console]]
Line 170: Line 170:
 
|[https://digiex.net/threads/sega-genesis-plus-libexnon-genesis-megadrive-emulator-for-xbox-360-download.9936 Libxenon]
 
|[https://digiex.net/threads/sega-genesis-plus-libexnon-genesis-megadrive-emulator-for-xbox-360-download.9936 Libxenon]
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}
 
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||? ||{{✗}} ||{{✗}}
 +
|-
 +
|jEnesisDS
 +
|align=left|{{Icon|NDS}}
 +
|[https://nds.scenebeta.com/noticia/jenesisds]
 +
|{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✗}} ||{{✓}}
 
|}
 
|}
 
</div>
 
</div>
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===Comparisons===
 
===Comparisons===
 
;[[BlastEm]]
 
;[[BlastEm]]
:Aims for cycle accuracy but unlike Exodus, aims for lower system requirements and has substantially higher compatibility. Development seems to have slowed down though.
+
:Aims for cycle accuracy but unlike Exodus, aims for lower system requirements and has substantially higher compatibility. Stable releases seem to have slowed down though. [https://old.reddit.com/r/emulation/comments/b6ktic/blastem_genmd_emu_062_released/ejlgfi0/ The "Nuked" core that can be optionally used in Genesis Plus GX provides more accurate FM emulation than what's in BlastEm at present].
;[[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.
+
;[[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 but only the version used in [[RetroArch]] supports [https://github.com/nukeykt/Nuked-OPN2 Nuked OPN2 & Cycle-accurate Yamaha YM3438(YM2612)].
  
 
:;[https://github.com/libretro/Genesis-Plus-GX-Wide Genesis Plus GX Wide]
 
:;[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.
 
:Custom fork of Genesis Plus GX available as a libretro core, it includes experimental widescreen options. Sega CD/Mega CD games are currently unsupported.
 +
 +
;[[BizHawk]]
 +
:"Just works out of the box" solution for Genesis/Mega Drive, CD & 32X, bundled with two cores (Genplus-GX/Genesis Plus GX [https://github.com/TASEmulators/BizHawk/issues/1528 without Nuked OPN2 support] and PicoDrive), ensuring both excellent compatibility and good speed.
  
 
;[[Kega Fusion]]
 
;[[Kega Fusion]]
Line 192: Line 200:
  
 
;[http://aamirm.hacking-cult.org/www/regen.html Regen]
 
;[http://aamirm.hacking-cult.org/www/regen.html Regen]
:A focus on accuracy has earned it's high compatibility with games, but it does not emulate the Sega CD and 32X. It also allows [[overclocking]].
+
:A focus on accuracy has earned its high compatibility with games, but it does not emulate the Sega CD and 32X. It also allows [[overclocking]].
  
 
;[[MAME]]
 
;[[MAME]]
:Has the parent drivers <code style="color:green">genesis</code>, <code style="color:darkred">segacd</code>, <code style="color:darkred">32x</code> and <code style="color:darkred">Pico</code>. Green drivers are reported as OK, where red ones are reported as "preliminary" as of version 0.246.
+
:Has the parent drivers <code style="color:green">genesis</code>, <code style="color:darkred">segacd</code>, <code style="color:darkred">32x</code> and <code style="color:darkred">Pico</code>. Green drivers are reported as OK, whereas red ones are reported as "preliminary" as of version 0.248.
  
 
;[[GENS]]
 
;[[GENS]]
Line 201: Line 209:
  
 
;[[higan]] / [[ares]]
 
;[[higan]] / [[ares]]
:Also developing cycle-accurate Genesis emulation, akin to its very own [[Super Nintendo emulators|SNES emulator]] bsnes. It's promising but incomplete.
+
:Also developing cycle-accurate Genesis emulation, akin to its own [[Super Nintendo emulators|SNES emulator]] bsnes. v130 version brings [https://github.com/ares-emulator/ares/commits/master/ares/component/audio/ym2612 "YM2612 improvement"] and [https://old.reddit.com/r/emulation/comments/xs5tol/ares_v130_released_multi_system_cross_platform/ support for "Mega Mouse"]
  
 
==Lock-On Emulation==
 
==Lock-On Emulation==
Line 214: Line 222:
 
* Smaller than 2MB: Will play a single random level from the Blue Sphere minigame generated from data in the header.
 
* 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.
 
* Bigger than 2MB: Will boot to Sonic & Knuckles.
* Has Battery Pack: All save data will be wiped out.
+
* Has Battery Pack: All saved 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 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.
 
Most emulators don't support Lock-On save for Genesis Plus GX, but there are pre-combined ROMs for the Sonic trilogy available 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.
Line 228: Line 236:
 
==Mega Drive Plus / Genesis Plus / MSU-MD modes==
 
==Mega Drive Plus / Genesis Plus / MSU-MD modes==
  
The Mega Drive Plus / Genesis 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-1 does in patched SNES games. Another variant was been made for [https://krikzz.com/store/home/59-mega-everdrive-pro.html Mega Everdrive PRO], named as [https://github.com/krikzz/msu-md MSU-MD].
+
The Mega Drive Plus / Genesis 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 that MSU-1 does in patched SNES games. Another variant was been made for [https://krikzz.com/store/home/59-mega-everdrive-pro.html Mega Everdrive PRO], named [https://github.com/krikzz/msu-md MSU-MD].
 +
 
 +
Currently, only Genesis Plus GX supports both modes as mentioned [https://github.com/ekeeke/Genesis-Plus-GX/issues/297#issuecomment-918468508 here], while Kega Fusion supports games that can only run in MSU-MD mode.
  
Currently, only Genesis Plus GX supports both modes as mentioned [https://github.com/ekeeke/Genesis-Plus-GX/issues/297#issuecomment-918468508 here], while Kega Fusion supporting games which can only run in MSU-MD mode.
+
A variant called 32x Plus (abbreviated as 32x+) made exclusively for Sega 32x games also exist, but again, it is only used by homebrew software, such as ''Doom 32x Resurrection.''
  
 
==External links==
 
==External links==
* [http://wiki.megadrive.org/index.php?title=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.
+
* [http://wiki.megadrive.org/index.php?title=Main_Page MegaDrive Development Wiki] - A Wiki about every technical aspect of the SEGA MegaDrive hardware and software. It aims to provide the most detailed, accurate, and up-to-date information, to help homebrew development and repairs.
 
* [http://segaretro.org/Category:Mega_Drive_emulators Mega Drive emulators] on Sega Retro
 
* [http://segaretro.org/Category:Mega_Drive_emulators Mega Drive emulators] on Sega Retro
 
* [https://archive.org/details/sega_genesis_library ARCHIVE.ORG Console Library: Sega Genesis]
 
* [https://archive.org/details/sega_genesis_library ARCHIVE.ORG Console Library: Sega Genesis]

Latest revision as of 05:31, 26 November 2022

Sega Genesis / Mega Drive
RS39200 Megadrive.png
Sega-Genesis-Mk2-6button.jpg
Sega-Nomad-Front.jpg
Top: PAL Sega Mega Drive.
Middle: Sega Genesis Model 2 with 6-button controller.
Bottom: Sega Genesis Nomad, portable variation.
Developer Sega
Type Home video game console
Generation Fourth generation
Release date 1988
Discontinued 1997
Predecessor Master System
Successor Saturn
Emulated

The Sega Genesis is a 16-bit, fourth-generation console released by 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).

The Sega CD was released on October 15, 1992, and retailed for $299.99 and had a Motorola 68000 CPU at 12.5 MHz and 64 kbit of RAM. The Sega 32X was released on November 21, 1994 for $159.99. It had 2 SH-2 RISC CPUs at 23 MHz with 256KB of RAM and 256KB of VRAM.

Genesis emulation is very good, with a high degree of game compatibility (many of them claim nearly 100% compatibility with commercial games, including Virtua Racing). They are available on many platforms. Many Genesis emulators also feature compatibility with the Sega Master System (SMS), and the Game Gear (GG) as well as earlier Sega consoles. However, genesis-based arcade boards and the Sega Pico are still sketchy.

Emulators[edit]

Name Platform(s) Latest version CD 32X Pico libretro FLOSS Active Recommended
PC / x86
BlastEm Windows Linux macOS Nightly builds
libretro core
0.6.2
[N 1] *
Genesis Plus GX Windows Linux macOS FreeBSD libretro core * [N 2] [N 3]
PicoDrive Windows Linux macOS FreeBSD 1.93
libretro core
~ [N 4] [N 2] [N 3]
ares Windows Linux macOS v130.1 [N 5] *
Kega Fusion Windows Linux macOS 3.64 ~[N 6] ~
Gens/GS
derived from GENS
Windows Linux macOS FreeBSD r7 ~
BizHawk Windows Linux 2.8
Dev builds
~ [N 4] ~
MAME Windows Linux macOS FreeBSD 0.249 ~ ~ ~ ~
Exodus Windows 2.1
GENS Windows Linux BeOS 2.14
higan Windows Linux macOS FreeBSD v110 ~
AloneMD Windows 1.0.2 ?
FinalBurn Neo Windows Linux macOS Stable
WIP builds
[N 3]
DGen Windows Linux macOS FreeBSD 1.33
Genecyst MS-DOS x.xx
KGen/KGen98 MS-DOS 034b
9804
Megado Windows Linux git ?
Regen Windows Linux 0.972 ?
Mobile / ARM
Genesis Plus GX Android iOS Linux Pandora libretro core [N 2] [N 3]
MD.emu Android Dragonbox Pyra 1.5.65 (Android)
1.5.46.02 Pyra
PicoDrive Android Pandora Gizmondo GP2X Wiz
GP2X
1.93 libretro core [N 2] (NDS) [N 3]
Consoles
NeoGenesis Xbox V25 ?
Genesis Plus GX GameCube Xbox 360 Wii git
1.7.5 RC1
RetroArch 360 0.9.8.3
[N 3]
PicoDrive PlayStation 2 Wii
PSP
Nintendo DS
Nintendo 3DS
1.93
PicoDrive 1.51b
1.13.0
(NDS/3DS) [N 3]
Virtual Console Wii N/A
Sega Genesis Plus Xbox 360 Libxenon ?
jEnesisDS Nintendo DS [1]
  1. Recent blastem-nightly builds supports Sega CD
  2. 2.0 2.1 2.2 2.3 On some platforms, this emulator is only available as a libretro core.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Due to using a non-commercial license. Source code is still publicly available.
  4. 4.0 4.1 PicoDrive Libretro/BizHawk version doesn't have stylus and turn page support, while the Windows standalone version does.
  5. Needs firmware v2.00, there are issues using older versions.
  6. While it supports Sega CD emulation, there is notable audio sync issues. Kega is not recommended for CD emulation.

Comparisons[edit]

BlastEm
Aims for cycle accuracy but unlike Exodus, aims for lower system requirements and has substantially higher compatibility. Stable releases seem to have slowed down though. The "Nuked" core that can be optionally used in Genesis Plus GX provides more accurate FM emulation than what's in BlastEm at present.
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 but only the version used in RetroArch supports Nuked OPN2 & Cycle-accurate Yamaha YM3438(YM2612).
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.
BizHawk
"Just works out of the box" solution for Genesis/Mega Drive, CD & 32X, bundled with two cores (Genplus-GX/Genesis Plus GX without Nuked OPN2 support and PicoDrive), ensuring both excellent compatibility and good speed.
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.
Exodus
Think higan, but for the Genesis. Even though higan also emulates Genesis games, Exodus has already achieved cycle accuracy at the familiar cost of high system requirements. It is the newest Genesis emulator and is far from complete.
PicoDrive
Strongly prioritizes performance over accuracy. Compatibility and accuracy aren'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 cross-platform option for 32X and Pico games.
Regen
A focus on accuracy has earned its high compatibility with games, but it does not emulate the Sega CD and 32X. It also allows overclocking.
MAME
Has the parent drivers genesis, segacd, 32x and Pico. Green drivers are reported as OK, whereas red ones are reported as "preliminary" as of version 0.248.
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 / ares
Also developing cycle-accurate Genesis emulation, akin to its own SNES emulator bsnes. v130 version brings "YM2612 improvement" and support for "Mega Mouse"

Lock-On Emulation[edit]

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 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 saved 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 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 (Pro) -- 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. After resetting, the game will boot 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.

For GG/AR, the files needed are areplay.bin and ggenie.bin, but most emulators support cheat codes from these natively.

Mega Drive Plus / Genesis Plus / MSU-MD modes[edit]

The Mega Drive Plus / Genesis 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 documented to be used on Terraonion's Mega SD flash cartridge, to give similar effects for Genesis games in a way that MSU-1 does in patched SNES games. Another variant was been made for Mega Everdrive PRO, named MSU-MD.

Currently, only Genesis Plus GX supports both modes as mentioned here, while Kega Fusion supports games that can only run in MSU-MD mode.

A variant called 32x Plus (abbreviated as 32x+) made exclusively for Sega 32x games also exist, but again, it is only used by homebrew software, such as Doom 32x Resurrection.

External links[edit]

Dreamcast logo.png
Consoles: SG-1000Master SystemGenesis / Mega DriveCD32XPicoSaturnDreamcast
Handhelds: Game GearVMU / VMS
Arcade: System seriesModel 1Model 2Model 3Naomi