Genesis Plus GX is a Sega / Mega CD, Genesis / Megadrive, Master System, Game Gear and SG-1000 emulator. This is a port of Charles MacDonald's Genesis Plus to the Wii and Gamecube, with a lot of improvements.

Change Log Please see included HISTORY.txt for full changelog

Genesis Plus GX 1.7.4 (21/06/2013) (Eke-Eke)

[Core/SCD]


  • fixed access to read-only registers on Main-CPU side ("Batman Returns" platform level freeze)
  • fixed & improved emulation of PRG-RAM write protection register ("Lunar Eternal Blue" japanese version freeze)
  • improved SUB & MAIN-CPU synchronization ("Dracula Unleashed" freeze when using US Model 2 BIOS)
  • improved CPU polling detection
  • improved CDD emulation & added CD drive access time for SEEK command ("Panic!/Switch" intro missing scene)
  • added missing reinitialization of MAIN-CPU PRG-RAM bank on reset
  • added .OGG audio tracks support through LIBTREMOR

[Core/Sound]


  • fixed YM2612 configurable DAC depth emulation
  • improved Low-Pass filter
  • added optional "MONO" output mode

[Core/VDP]


  • fixed FIFO access timings when using invalid write code value ("Clue" menu)
  • fixed DMA Copy with undocumented code value ("Fatal Labyrinth" end sequence)
  • minor code fixes & optimizations

[Core/CPU]


  • optimized 68k stack read/write functions
  • fixed broken 68k address error emulation
  • fixed 68k interrupt behavior (prevents interrupts from being executed multiple time when 68k is halted)
  • fixed Z80 registers initial state, added proper initialization when using PBC (verified on real hardware by Charles McDonald)

[Core/MD]


  • fixed SRAM incompatibilities between BIG ENDIAN & LITTLE ENDIAN platforms (note: this breaks old .srm files with LITTLE ENDIAN platform ports)
  • added support for a few recently dumped unlicensed games
  • added auto-detection of byte-swapped ROM files

[Gamecube/Wii]


  • fixed CD Leds positioning when using NTSC filter
  • improved on-screen CD Leds (thanks to Iceknight)
  • various code fixes & improvements


http://code.google.com/p/genplus-gx/downloads/list