Genesis Plus is an emulator of the Sega Genesis / Sega Megadrive for Wii and GameCube. This is a port of Charles MacDonald’s Genesis Plus to the Wii with lots of improvements.


1.3.0 (14/12/2008):

– YM2612 bugfixes (MAME core):
.fixed EG Decay->Substain transition when SL & DR are minimals: fix tracks #3 and #9 in “Mega Turrican”
.fixed a bug in SSG-EG emulation code: fix Level 1 music in “Alisia Dragoon”
.modified SSG-EG Decay End Level: fix some sound effects (ChainSaw, Zap…) in “Beavis & Butthead”
.improved Detune overflow accuracy: fix very high frequency sounds in many games
.fixed registers 0x20-0x26 Reset state: fix intro music in “B.O.B”
.reverted incorrect fix with KEY ON: fix “Flamethrower” sound effect in “Alien 3” and many others
– adjusted HCounter values: fixes line flickering in “Sonic 3D” bonus stage
– adjusted VINT timing: fixes hang-up in “V.R Troopers”
– improved HBLANK flag accuracy: fixes line flickering in “Gouketsuji Ichizoku”
– fixed broken Z80 access to WRAM: fixes hang-up in “Mamono Hunter Youko”
– modified JCART emulation: fixes 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

– remove slowest libsamplerate settings under “HQ YM2612” option, only keeps SRC_LINEAR (faster) and SRC_SINC_FAST (better)
– added an 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 works for Qoob users too (thanks to emukiddid)
– fixed “Reset” button behavior, now acts more like Genesis Reset button 😉
– patched libfat for faster SDCARD 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
– *new* libogc 1.7.0 features: SDHC support, Wiimote shutdown button support