JEnesisDS

JenesisDS
General
Author	Lordus
Type	Console
Version	0.7.4
License	Mixed
Last Updated	2008/07/13
Links
Download
Website

jEnesisDS is a Sega Genesis/MegaDrive emulator for the Nintendo DS, by Lordus. It is a port of a Genesis emulator written in Java and was released as an entry in the GBAX 2007 competition. It is the only Genesis emulator for the DS with sound support.

It was entered to the NEO Summer Coding Compo 2007 and ranked 3rd place.

Installation

jEnesisDS uses DLDI for accessing your cards filesystem, DLDI patch for the .nds file and add your rom disks.

User guide

You have to play a bit with the settings to make some games boot or work better.

Some games work faster with Idle Loop Detection, others without (Castlevania, Gunstar Heroes), and some games just boot if it is disabled.

The same goes for H-INT emulation. If a game doesn't boot just try changing those options.

Very few games will just boot, if checksum autofixing is disabled (Dynamite Heady, Thunder Force IV).

Note: 3MB+ games will not work due to the limitations of the emulator.

Game compatibility list

Please also see compatibility list.

MegaDrive/Genesis ROM Title	Notes
16 Zhang Wa Jiang	Works.
16t	Works.
2020 Toshi Super Baseball	Works.
3 Ninjas Kick Back	Works.
688 Attack Sub	Works.
Aa Harimanada	Works.
Aaahh! Real Monsters	Works.
Action 52	Works.
Addams Family Values	Works.
Addams Family, The	Black screen.
Advanced Daisenryaku - Deutsch Dengeki Sakusen	Works.
Adventures of Batman & Robin	Works.
Adventures of Mighty Max, the	Black screen.
Adventures of Rocky and Bull	Works.
Adventurous Boy - Mao Xian X	Works.
Aeon Blasters / Air Buster	Works.
Aero the Acro-Bat	Works.
Aero the Acro-Bat 2	Works, glitchy intro.
Aerobiz	Works. Enable H-INIT.
Aerobiz Supersonic	Works.
After Burner II	Works but ground not rendered properly.
Air Diver	Works.
Air Management - Oozora ni Kakeru	Works.
Air Management II - Koukuuou wo Mezase	Works.
Aladdin	Works.
Alex Kidd in the Enchanted Castle	Works.
Alien 3	Works.
Alien Soldier	Not Working. Slow and unplayable.
Alien Storm	Works.
Alisia Dragoon	Works.
Altered Beast	Works. Minor Graphical errors.
American Gladiators	Works.
Andre Agassi Tennis	Works.
Animaniacs	Works.
Another World	Works.
Aoki Ookami to Shiroki Mejika	Works.
Aquatic Games Starring James Pond	Works.
Arcade Classics	Works.
Arch Rivals - The Arcade Game	Works.
Arcus Oddyssey	Works.
A Ressha de Ikou MD (Take the "A" Train)	Works.
Ariel the Little Mermaid	Works.
Arnold Palmer Tournament Golf	Works.
Arrow Flash	Works.
Another World	Works.
Art Alive	Works.
Art of Fighting	Works.
Astrix and the Great Rescue	Works. PAL-only game but runs at NTSC speed.
Astrix and the Power of the Gods	Works. PAL-only game but runs at NTSC speed.
Atomic Robo-Kid	Works.
Atomic Runner	Works.
ATP Tour Championship Tennis	Works.
Australian Rugby League	Works. Crowd sound distorted.
Atomic Robo-kid	Works.
Awesome Possu... Kicks Dr. Machino's Butt!	Works.
Atomic Robo-kid	Works.
Awong: Hero in the Sky	Works.
AWS Pro Moves Soccer	Works. Enable H-INIT.
Ayrton Senna's Super Monaco GP II	Works.
Barver Battle Saga: Tai Kong Zhan Shi	Works.
Battletoads	Works.
Battletoads & Double Dragon	Not working.
Beyond Oasis	Works.
Bill's Tomato Game	Works. Needs H-INIT set to ON.
Boogerman	Works. Needs H-INIT set to ON.
Bubba n' Stix	Works.
Bubble and Squeek	Not working.
Bubsy	Works.
Bubsy II	Works. Music not working and some sound effects wrong.
Cannon Fodder	Works. Set H-INIT to ON. Disable Force Update to eliminate framerate issues. PAL-only game but runs at NTSC speed. Some graphical and audio glitches.
Castlevania Bloodlines	Works.
Chiki Chiki Boys	Works.
Chuck Rock	Works.
Chuck II: Son of Chuck	Works.
Cold Shadow	Works. PAL-only game but runs at NTSC speed.
Command & Conquer (beta)	Not working. Brown screen after post-title splashscreen.
Comix Zone	Works. Crops the Screen a bit. Some Background Flicker. Very Playable.
Contra: Hard Corps	Works. Cuts off the Edges a Little.
Cool Spot	Works.
Cosmic Spacehead	Works.
Crusader of Centy	Works.
Daze Before Christmas	Works. PAL-only game but runs at NTSC speed.
Decap Attack	Works.
Doraemon	Works.
Dr. Robotnik's Mean Bean Machine	Works. Sprites for title screen are missing.
Dragon Ball Z: Buyuu Retsuden	Works. Occasional background corruption.
Dynamite Headdy	Works.
Earthworm Jim	Works.
Earthworm Jim 2	Works.
Ecco the Dolphin	Works.
Ecco Jr.	Runs near flawlessly with minor graphic errors.
Elemental Master	Works.
Eternal Champions	Works.
Exile	Works. Minor glitches on right of screen.
Fatal Labyrinth	Works.
FIFA International Soccer	Works. Crowd sound is garbled but otherwise fine.
FIFA Soccer 95	Works. Crowd sound is garbled but otherwise fine.
FIFA Soccer 96	Works. Crowd and intro sound is garbled but otherwise fine.
FIFA 97: Gold Edition	Works. Crowd sound is garbled but otherwise fine.
FIFA 98: Road to World Cup	Works. Crowd sound is garbled but otherwise fine.
Flink	Works. PAL-only game but runs at NTSC speed.
Gaiares	Works.
Garfield: Caught in the Act	Works.
Gargoyles	Works.
Ghouls & Ghosts	Works.
Gley Lancer	Works.
Gods	Works.
Greendog: The Beached Surfer Dude!	Works. Sprite Masking must be OFF.
Gunstar Heroes	Works.
Golden Axe	Works.
High Seas Havoc	Works.
International Superstar Soccer Deluxe	Works. Set H-INIT to ON. Graphical glitches on pitch.
Izzy's Quest for the Olympic Rings	Works. H-INT needs to be ON. No sound.
Joe and Mac: Caveman Ninja	Works.
Kid Chameleon	Works.
Langrisser 2	Works.
Landstalker	Works.
Last Battle	Works. Set H-INIT to ON.
Legend of Wukong	Works.
Light Crusader	Works. Some priority issues.
Lobo	Works.
Lotus Turbo Challenge	Works. Actually works perfectly without cropping.
Magical Taruruuto Kun	Works.
Marsupilami	Works.
Marvel Land	Works. Some background flickering
McDonald's Treasure Land Adventure	Works.
Mega Bomberman	Works.
Mega Man: The Wily Wars	Works. Use this patch actually works perfectly without cropping.
Mega Turrican	Works from start to finish.
Mick and Mack Global Gladiators	Works.
Michael Jackson's Moonwalker	Works.
Mickey's Castle of Illusion	Works.
Mickey Mania	Works. Some graphical glitches. Turn H-INIT to ON to pass moose stage.
Mickey Mouse - Minnie's Magical Adventure 2	Works.
Mickey's World of Illusion	Works.
Micro Machines	Works. Enable H-INIT to avoid slowdown. Actually works perfectly without cropping.
Micro Machines 2 Turbo Tournament	Works. Enable H-INIT to avoid slowdown.
Micro Machines Military	Works. Enable H-INIT to avoid slowdown.
Micro Machines Turbo Tournament '96	Works. Enable H-INIT to avoid slowdown.
Mighty Morphin' Power Rangers: The Movie	Works.
Monster World IV	Works. English patch needs region set to EUR.
Mortal Kombat	Works. Set H-INIT to ON.
Mortal Kombat II	Works. Set H-INIT to ON.
Mr. Nutz	Works. Works. PAL-only game but runs at NTSC speed. Set H-INIT to ON.
M.U.S.H.A	Works.
Mystic Defender	Works.
Nadia: The Secret of Blue Water	Works.
NBA Live '95	Works. Menu has graphical issues, and crowd sound is garbled.
Outrun	Works.
Pagemaster	Works. Set H-INIT to ON.
Phantasy Star 2	Works. Set H-INIT to ON.
Phantasy Star 2 Text Adventure: Annie's Adventure	Not working. Red screen after title.
Phantasy Star 3	Works. Cuts off a Small Portion of the Left Side of the Screen. Quite Playable.
Phantasy Star 4	Works. Turn Vertical Scaling Off.
Power Instinct	Works.
Puggsy	Not working. Crashes when entering level even when H-INIT enabled.
Pulseman	Works.
Quackshot	Works.
Radical Rex	Works.
Ranger X	Works. Set H-INIT to ON.
Ren & Stimpy: Stimpy's Invention	Works.
Rent-A-Hero	Works. New translation tested.
Rick Dangerous	Works.
Rise of the Robots	Works with minor graphical issues. Enabling 6-button pad is recommended.
Ristar	Works.
Rocket Knight Adventures	Works.
Road Rash	Works, but road and grass are rendered incorrectly.
Road Rash II	Works, but road and grass are rendered incorrectly.
Road Rash 3	Works, but road and grass are rendered incorrectly.
Rolo to the Rescue	Works.
Sensible Soccer	Not working. Black screen on boot.
Shining Force	Works. Actually works perfectly without cropping.
Shining Force 2	Works. Actually works perfectly without cropping.
Shining in the Darkness	Works. Actually works perfectly without cropping.
Shinobi 3	Works (0.6).
Snow Bros	Works from start to finish.
Sonic 3D Blast: Flickies' Island (beta 73)	Works. Disable Force Update to fix slowdown and do not go to JenesisDS menu. Major graphical distortion on intro and title. Minor in-game glitches but fully playable. Press A on pause menu to skip stage.
Sonic & Knuckles	Works (0.6). Gameplay is perfect, minor menu glitches.
Sonic Crackers	Works.
Sonic Spinball	Works. Sometimes game objects appear in front of the HUD.
Sonic the Hedgehog	Works.
Sonic the Hedgehog 2	Works. Graphics corrupt in 2-player mode due to strange interlaced resolution. Emerald Hill Zone and Casino Night Zone have minor foreground issues for empty tiles. Loading a save state causes missing sound channels.
Sonic the Hedgehog 2 (Simon Wai Prototype)	Works. Access inaccessible stages by pressing A+Start on title screen.
Sonic the Hedgehog 3	Works (0.6), minor sound issues.
Sonic the Hedgehog 3 & Knuckles	Works, but use this patch to reduce the rom size. SRAM doesn't work so save using save states.
Space Harrier II	Works.
Sparkster	Works.
Spider-Man & Venom: Maximum Carnage	Playable although it has major graphic issues.
Spot Goes to Hollywood	Works.
Starflight	Works. Some graphical issues on text.
Star Odyssey	Works.
Street Fighter II: Special Champion Edition	Works. Actually works perfectly without cropping. Enabling 6-button pad is recommended.
Streets of Rage	Works.
Streets of Rage 2	Works.
Streets of Rage 3	Works.
Strider	Works.
Super Fantasy Zone	Works from start to finish.
Sword of Vermillion	Works.
Sylvester & Tweety Cagey Capers	Works.
Tazmania	Works.
The Lion King	Works. Disable Force Update to fix slowdown and do not go to JenesisDS menu.
The Jungle Book	Works. Some glitches in story sequences.
Thomas the Tank Engine & Friends	Works.
Thunderforce IV	Works. Enable H-INIT for upper part of the screen to show.
Tinhead	Not working. Black screen on boot.
Tiny Toon Adventures: Buster's Hidden Treasure	Works.
Toejam & Earl	Works.
Toejam & Earl: Panic on Funkotron	Works.
Toki / JuJu Densetsu	Works.
Tougi-Ou: King Colossus	Works.
Truxton / Tatsujin	Works.
Trouble Shooter / Battle Mania	Works.
Twinkle Tale	Works.
Undead Line	Works.
Valis	Works.
Valis III	Works.
Vectorman	Works.
Vectorman 2	Works.
Virtua Racing	Not working. Unemulated SVP chipset.
Warriors of the Eternal Sun	Works. Party selection portraits invisible.
Warsong	Works.
Wiz n' Liz	Not working.
World Cup Italia '90	Works.
Wonder Boy III: Monster Lair	Works.
Wonder Boy V: Monster World	Not working. Hangs on title screen.
Worms	Works. Actually works perfectly without cropping.
Xiao Monv: Magic Girl	Works.
Ys III	Works.
Zero the Kamikaze Squirrel	Works.
Zero Tolerance	Works. Weapon slightly layered over HUD.
Zero Tolerance 2: Beyond Zero Tolerance	Works. Weapon slightly layered over HUD.
Zero Wing	Works from start to finish.
Zool	Not working. Crashes on SEGA logo.

Control

6-Button Mode (PAD1):

Y - Y button

B - B button

A - C button

X - X button

L - Y button

R - Z button

Start - Start

Start+L+R - Mode

D-Pad - L/R/D/U

3-Button Mode (PAD1):

Y - A button

B - B button

A - C button

D-Pad - L/R/D/U

STart - Start

X - Center screen

L - Move screen area left (if the game has a horizontal resolution of 320 pixels)

R - Move screen area right (if the game has a horizontal resolution of 320 pixels)

Select - Enter File Browser (also accessible by the cartridge icon)

Stylus:

Touch the Joypad icon to enter Setting in game.

Touch save-slot icons to load/save states (2 slots available).

Touch screen to pause. While in pause mode, use the D-Pad for screen positioning in the HW renderer version.

Screenshots

Known issues

With games that suffer from slowdown unless Force Update is enabled or disabled, avoid going to the jEnesisDS menu (pressing the touchscreen) it will cause the slowdown to occur again. Pause using the Start button only (examples are The Lion King, Sonic 3D beta 73, etc).

Changelog

v0.7.4

• Changed scheduling of M68000 and Z80.
• Some changes in M68000 internal memory handlers.
• YM2612 FM core mostly rewritten in ASM.
• Some bugs in FM core fixed (Operator 1 was sometimes not considered in certain cases).
• Fixed reset bug for FM core resulting in unstable sound for every game loaded except the 1st one.
• Raised sample rate for FM emulation from 16KHz to 28KHz (28, because a few games can't do 32KHz).
• Sound is completely mixed in hardware now, meaning every FM channel, PSG and DAC have their own DS sound channels.

v0.7

• Fixed bug in Z80 core, preventing some games from having sound (Wonderboy, etc).
• Fixed bug in 68000 optimization, that could make some games hang (Bonanza Brothers, etc).
• Changed sound handling and doubled sample rate for PCM sound, resulting in slightly better sound quality.
• HW renderer partially rewritten, many glitches should be gone, some are still there (and will probably not be easy to fix ever).
• Sprite rendering completely rewritten in ASM. Should be faster and fix most of the sprite issues.
• Implemented mid frame palette updates (water effects in Sonic games, Castlevania, etc). Note, that this just works, if a game is constantly fast enough, so slowdowns can still cause colors to flicker).
• Many little optimizations in memory handling and the CPU cores. Should reduce slowdowns.
• Added option for sprite masking (Landstalker etc). It is not 100% emulated, just faked to be enough for most games using it (disable it, if sprites are missing, that should be there).
• Added option to change between 3- and 6-Button pad (just works, if the option is applied BEFORE loading a game). When 6-Button pad is disabled, L+R can be used to move the visible screen area, X to center it.
• Added sound state to the savestates, so that the correct tracks should play now when a state is loaded. Savestates are still not 100% reliable and loading old states can potentially cause problems.

v0.6

• Custom Z80 ASM core implemented.
• Custom YM2612 and PSG emulation, running on the ARM7. So there is sound now.
• Many parts rewritten. Speed without Z80 core should be quite a bit faster for most games.
• Idle-loop detection completely rewritten. Shouldn't break any games anymore. Therefore the option to disable it was taken out.
• Some changes to HW renderer. Some glitches should be gone, others were probably introduced. Will be rewritten for the next version.
• Tweaked H-Int auto detection, so less games should need the "ON" option to boot now.
• Mode-Button added (L+R+Start).

v0.5

• Implemented save-states (touch slot icons to load/save).
• Extended SRAM compatibility. Story of Thor and Phantasy Star IV should work now.
• Extended "force update" of HW renderer. Fixes Sonic3 intro, Sonic Bonus stage and probably others.
• Fixed sprites showing garbage if more than 64 sprites were displayed (Comix Zone, Outrun, Sonic, well most games probably).
• Partial rewrite of sprite handling in the HW renderer. Less slowdowns when a lot of sprites are displayed.
• Implemented better VSync. Fixes temporary speedups after slowdowns.
• Implemented vertical scaling option into HW renderer (horizontal is NOT possible, dont ask). Aspect ratio will be incorrect, but makes games more enjoyable.
• Implemented screen positioning in HW renderer (touch screen to pause, then use [D-Pad] to scroll. Push [A] for faster scrolling).
• Rewrote DS interrupt system for HW renderer. Probably less slowdowns, surely safer.
• Added "Fake Z80" option. The faking code can mess up some games (Ghouls n' Ghosts, Aladdin, Cool Spot 2, and others), so it can be turned off now.
  • Interestingly enough, if it is turned off, real Z80 emulation will be executed, BUT just undercertain circumstances, to keep games working and not to slow things down.
  • As with other options, some games might depend on a certain setting to boot (Gaiares just boots when this option is set to "off").

v0.4

• Updated Release.
• Recompiled with current cpu core. v0.4 was "accidentially" compiled with an older version.

This should raise compatibility quite a bit.

• Separated HW and SW renderer versions.
• Activated "Force Update" Option in the HW renderer version. If enabled, the chances of tile corruptions are minimized - it can lead to massive slowdowns though, if a game updates more than 1024 unique tiles per frame (Turrican intro, Comix Zone intro).
• You can also temporarily change this option for a one-time update, if the tiles are corrupted(i.e Viewpoint).

v0.4

• Initial Preview Release.
• Custom ARM asm Motorola68000 CPU core.
• Hardware and Software renderer (this release defaults to the HW renderer and the SW renderer can not yet been choosen through the settings.
• VDP emulation with all DMA modes.
• Horizontal & Vertical Interrupts.
• Support for PAL/NTSC and all country codes (all games will run at 60Hz though).
• .smd, .bin & .gen support.
• partial SRAM save/load support (doesnt work for all games yet).
• Line based renderer.
• Scroll Layers A+B & Window rendering with priorities (horizontal Windows arenot emulated in theHW renderer yet).

Credits

Exophase, Stéphane Dallongeville ,Charles McDonald, SiLeNt_Ni.

Anyone else who supported this project in one or another way.

External links

• Author's website - http://www.workingdesign.de/projects/jenesisds.php
• NeoFlash - https://www.neoflash.com/forum/index.php?topic=4571.0