Genesis Plus

Genesis Plus
General
Author(s)	Eke-eke
Type	Console emulator
Version	1.3.1
Links
Download
Source
Downloadable via the Homebrew Browser
Peripherals

Genesis Plus is an emulator of the Sega Genesis / Sega Megadrive. This is a port of Charles MacDonald's Genesis Plus to the Wii with alot of improvements.

Information

• Preferred PAL Mode: Any (automatic TV mode detection, no more PAL60 version needed).
• Display mode : 480p, 480i, 576i, 240i, 288i, 288p and 240p
• Supports Zip compressed rom images.
• Genesis 4 players multitap adapters (Sega TeamPlayer and EA 4-Way Play) support
• Game Genie cheat code support
• Sega Mouse & Sega Mega Mouse
• Sega Menacer & Konami Justifier lightguns. 2 lightgun has the same time supported.
• SVP DSP (Virtua Racing)

Installation

1. Copy on the root of your SD card the directory apps of the archive.
2. 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.
   • 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 HackMii. The DVD should use ISO 9660 file format.
3. /genplus/saves is automatically created if it does not exist on your SD card.
4. Select Load New Game from the Main Menu to load a ROM.
5. Select Play Game from the Main Menu to begin playing the game.

Controls

Menu Controls

		+		Action
or /	/	/ or	/ or	Move
	or	or		Previous menu
	or	or		Select

File selector menu

		+		Action
/ or	/	/ or	/ or	Display the selected entry's full filename
/ or	/	/ or	/ or	Select previous/next file
/	/	/	/	Down/Up one full page
				Quit the file selection menu
	or	or		Up one directory
	or	or		Load the selected file or enter selected directory

Game Controls (default)

The control can be changed in "Emulator Options/Controls Options" menu except Genesis Dpad, Mode, Emulator Menu and soft reset.

You can do a soft reset by pressing the .

To play game with Menacer or Justifiers lightgun you have to configure a controller in Port A and Port B for lightgun (2 supported). to shoot and to aim.

		+		Action
or		or	or	Genesis Dpad
				START
				A
				B
				C
				X
				Y
				Z
+				Mode
				Emulator Menu
+	+	+	+	Soft Reset

Known Issues

Expansion controllers (Nunchuk or Classic) are sometimes not detected upon initialization. To solve that, simply disconnect and reconnect it from the Wii Remote.

Full Notes about the Release

More in-depth documentation about this release can be found at; http://gxdev.wordpress.com/about/

Changelog

1.3.1 (20/12/2008)

[NGC/Wii]

• Improved sound engine
• Modified frame sync
  • Now uses audio DMA interrupt

1.3.0 (14/12/2008)

[Genesis]

• YM2612 bugfixes (MAME core):
  • Fixed EG Decay->Substain transition when SL & DR are minimals
    • Fixed tracks #3 and #9 in "Mega Turrican"
  • Fixed a bug in SSG-EG emulation code
    • Fixed Level 1 music in "Alisia Dragoon"
  • Modified SSG-EG Decay End Level
    • Fixed some sound effects (ChainSaw, Zap...) in "Beavis & Butthead"
  • Improved Detune overflow accuracy
    • Fixed very high frequency sounds in many games
  • Fixed registers 0x20-0x26 Reset state
    • Fixed intro music in "B.O.B"
  • Reverted incorrect fix with KEY ON
    • Fixed "Flamethrower" sound effect in "Alien 3" and many others
• Adjusted HCounter values
  • Fixed line flickering in "Sonic 3D" bonus stage
• Adjusted VINT timing
  • Fixed hang-up in "V.R Troopers"
• Improved HBLANK flag accuracy
  • Fixed line flickering in "Gouketsuji Ichizoku"
• Fixed broken Z80 access to WRAM
  • Fixed hang-up in "Mamono Hunter Youko"
• Modified JCART emulation
  • Fixed corrupted tracks logo in "Micro Machines 2"
• Added Blargg's NTSC Filters support (NTSC video artifacts emulation)
• Optimized VDP rendering core
  • Rewrote 68k interface (memory handlers, cycle execution, interrupts)
  • Greatly improved emulation speed

[NGC/Wii]

• Removed slowest libsamplerate settings under "HQ YM2612" option
  • Only keeps SRC_LINEAR (faster) and SRC_SINC_FAST (better)
• Added option to enable/disable bilinear filtering
• Rewrote video engine
  • Improved horizontal scaling (VI+GX)
  • Improved rendering speed (direct texture mapping)
• Removed embedded font, (re)enabled IPL font support
  • Now should work for Qoob users too (thanks to emukiddid)
• Fixed "Reset" button behavior
• Patched libfat for faster SD card accesses (thanks to svpe)
• SRAM and SaveState filenames are now based on the ROM filename (for FAT devices only)
• Various bugfixes, menu tweaks and code cleanup

[NGC only]

• Added 480p support in menu

[Wii only]

• Implemented fast scrolling in menu using Wiimote D-PAD
• Added "Power" button support
• Added USB Storage support
• Widescreen menu fix
• libogc 1.7.0
  • SDHC support
  • Wiimote shutdown button support