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| title = Genesis Plus
| title = Genesis Plus
| type = console emulator
| type = console emulator
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| author = Eke-eke
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| author = EkeEke
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| version = 1.3.1
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| version = 1.4.0
| download = http://code.google.com/p/genplus-gx/downloads/list
| download = http://code.google.com/p/genplus-gx/downloads/list
| source = http://code.google.com/p/genplus-gx/source/checkout
| source = http://code.google.com/p/genplus-gx/source/checkout
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| hbb = yes
| hbb = yes
}}
}}
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'''''Genesis Plus''''' is an emulator of the [http://en.wikipedia.org/wiki/Sega_Genesis Sega Genesis / Sega Megadrive]. This is a port of Charles MacDonald's '''Genesis Plus''' to the Wii with alot of improvements.
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'''''Genesis Plus''''' is an emulator of the [http://en.wikipedia.org/wiki/Sega_Genesis Sega Genesis / Sega Megadrive]. This is a port of Charles MacDonald's '''Genesis Plus''' to the Wii, with a lot of improvements.
== Information ==
== Information ==
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* Supports Zip compressed rom images.
* Supports Zip compressed rom images.
* Genesis 4 players multitap adapters (Sega TeamPlayer and EA 4-Way Play) support
* Genesis 4 players multitap adapters (Sega TeamPlayer and EA 4-Way Play) support
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* Game Genie cheat code support
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* Game Genie & Action Replay cheat code support
* Sega Mouse & Sega Mega Mouse
* Sega Mouse & Sega Mega Mouse
* Sega Menacer & Konami Justifier lightguns. 2 lightgun has the same time supported.
* Sega Menacer & Konami Justifier lightguns. 2 lightgun has the same time supported.
* SVP DSP (Virtua Racing)
* SVP DSP (Virtua Racing)
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* and a lot more, read the included user manual for details.
== Installation ==
== Installation ==
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#Copy on the root of your SD card the directory '''apps''' of the archive.
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Read the include User Manual.
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#Create a directory named '''/genplus/roms''' at the root of your SD card and place in your ROMs (.zip, .smd & .bin). There's a limit of 1000 files per directory.
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#*The ROMs can be placed on DVD-/+R (4.7GB max size) but you need to install the [[DVDx]] on your Wii. More infos on [http://hackmii.com/2008/08/libdi-and-the-dvdx-installer/ HackMii]. The DVD should use ISO 9660 file format.
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#/genplus/saves is automatically created if it does not exist on your SD card.
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#Select Load New Game from the Main Menu to load a ROM.
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#Select Play Game from the Main Menu to begin playing the game.
== Controls ==
== Controls ==
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|}
|}
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== Known Issues ==
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== Changelog ==
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Expansion controllers (Nunchuk or Classic) are sometimes not detected upon initialization. To solve that, simply disconnect and reconnect it from the Wii Remote.
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== Full Notes about the Release ==
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=== 1.4.0 (01/11/2010) ===
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More in-depth documentation about this release can be found at; http://gxdev.wordpress.com/about/
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==== Core/Sound ====
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* completely rewrote sound processing/mixing: sound chips are now clocked with exact output framerate
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to ensure 100% smooth video & audio playback, with no lag or skipping, while rendering an accurate number
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of samples per frame and keeping PSG & FM chips in sync.
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* improved PSG & FM chips synchronization with CPU execution (fixed point precision).
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* improved YM2612 core general accuracy (SSG-EG, CSM mode,...) (based upon Nemesis recent tests on real hardware)
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* improved YM2612 LFO emulation accuracy: fixes "Spider-Man & Venom : Separation Anxiety" (intro)
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* fixed YM2612 bug with Timer B: fixes "Langrisser Hikari II"/"Der Langrisser II" (Sega logo)
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* fixed YM2612 context saving/loading.
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* fixed YM2612 state on reset.
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* removed outdated & less accurate Gens YM2612 core
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* added configurable YM2612 DAC resolution emulation.
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* added configurable & faster FIR resampler (thanks to Blargg & AamirM), removed libsamplerate support.
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* added configurable Low-Pass filtering
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* added configurable 3-Band Equalizer (thanks to Neil C).
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* added an option to boost SN76489 Noise Channel.
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* adjusted SN76489 cut-off frequency.
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* implemented Blargg's blip buffer in SN76489 core (all channels are now lineary interpolated)
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==== Core/VDP ====
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* added support for CRAM writes during horizontal blanking (Striker, Zero the Kamikaze Squirrel,...)
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* added support for 2-Cell vertical scrolling in Interlaced 2 mode
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* added support for some undocumented mode register bits
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* added proper emulation of HV Counter latch: fixes Sunset Riders intro
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* added pixel-accurate emulation of mid-line display on/off (Nigel Mansell World Championship PAL, Ren & Stimpy's Invention PAL,...)
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* improved 2-cell vscroll emulation accuracy, as verified on real hardware (Gynoug, Cutie Suzuki no Ringside Angel, Formula One, Kawasaki Superbike Challenge)
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* improved FIFO timings accuracy: fixes Sol Deace intro
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* improved sprite masking accuracy (thanks to Nemesis for his test program)
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* improved sprites processing accuracy: fixes (un)masked sprites in Mickey Mania (3D level), Sonic 2 (VS mode).
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* improved HBLANK flag timing accuracy: fixes Mega Turrican (Sky level)
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* improved horizontal blanking & HINT/VINT occurence timing accuracy, as measured on real hardware.
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* improved HCounter accuracy in 40-cell mode, as measured on real hardware.
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* improved color accuracy in VDP highlight mode to match results observed on real hardware
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==== Core/CPU ====
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* updated Z80 core to last version (fixes interrupt Mode 0 timing and some BIT instructions).
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* fixed some Z80 instructions timing.
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* fixed state of Z80 registers on reset (sound issues with Defender & Defender 2 in Williams Arcade Classics)
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* improved Z80 interrupt accuracy
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* improved 68k accuracy (initial Reset timing + auto-vectored interrupts handling).
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* improved 68k timing accuracy for DIVU/DVIS (thanks to Jorge Cwik) & MULU/MULS instructions.
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* implemented 68k undocumented flags behavior for DIVU/DIVS instructions (Bloodshot / Battle Frenzy)
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* improved Z80 & 68k cpu execution/synchronization accuracy by using Master Clock as common reference (now run exactly 3420 M-Cycles per line).
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* modified Z80 & 68k cores to directly use external cycle count instead of intermediate counters.
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==== Core/Extra ====
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* added Game Genie hardware emulation.
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* added Action Replay & Pro Action Replay hardware emulation (only preliminary Pro Action Replay 2 support).
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* added Sonic & Knuckles "Lock-On" support.
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* added Cartridge "Hot Swap" feature.
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* added missing EEPROM support in more games.
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* added VDP lock-out emulation (TMSS).
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* improved emulation of copy-protection hardware found in some unlicensed cartridges (Mulan, Pocket Monsters II).
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* fixed Realtec mapper emulation: fixes missing sound in Balloon Boy / Funny World.
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* fixed lightgun auto-detection: fixes default cursor position in Lethal Enforcers II.
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* enabled simultaneous use of multitap & J-CART (Super Skidmarks 6-player mode)
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* lots of code cleanup, bugfixes & optimization.
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==== Gamecube/Wii ====
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* implemented custom FONT engine (uses internal IPL font & GX hardware rendering).
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* implemented custom GUI engine (uses GX hardware rendering & multithreading)
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* implemented advanced menu interface (IR pointing, game snapshots, cheats & saves manager, visual & sound effects, BGM support, etc).
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* improved audio/video synchronization to ensure 100% smooth video & audio playback.
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* improved soft-reset button support, now works more like real Mega Drive / Genesis (model 1) reset button.
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* improved lightgun cursors layout.
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* added automatic ROM loading feature (last played game launches immediately when starting the emulator)
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* added PAR codes and .pat files support
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* fixed lot of stability issues and potential memory leaks.
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==== Wii specific ====
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* added Video Hardware "Gamma" control
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* added Video Hardware "Trap Filter" control
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* improved Mouse emulation through Wii remote
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* compiled with devkitPPC r22 & libOGC 1.8.5 (includes SDHC & USB2 support through IOS58, removes DVDX support)
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== Changelog ==
=== 1.3.1 (20/12/2008) ===
=== 1.3.1 (20/12/2008) ===
==== [NGC/Wii] ====
==== [NGC/Wii] ====