Saturday, July 7, 2012

Genesis Plus GX 1.7.0

by EkeEke
Genesis Plus is a Sega Genesis / Sega Megadrive / Sega Master System emulator. This is a port of Charles MacDonald's Genesis Plus to the Wii, with a lot of improvements.

  • 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 & Action Replay cheat code support
  • Sega Mouse
  • Sega Activator
  • Sega Menacer & Konami Justifier lightguns. 2 lightgun has the same time supported.
  • SVP DSP (Virtua Racing)
  • Master System compatibility mode
  • and a lot more, read the included user manual for details.
  • added Mega CD / Sega CD hardware emulation (incl. Sub 68K, CDD, CDC, PCM, GFX rotation/scaling, etc)
  • added .ISO & .BIN CD image file support
  • added 512K backup cartridge RAM support
  • added savestate support for CD games
  • modified 68k core for Mega CD / Sega CD support
  • optimized 68k core using prebuild const tables
  • improved DMA accuracy
  • improved accuracy of nametables register & VSRAM writes during HBLANK: fixes "The Adventures of Batman & Robin" (graphical issues during 2nd Boss fight).
  • added support for 8-bit VRAM writes with undocumented code value (verified on real hardware by Nemesis)
  • improved synchronization between SN76489 & YM2162 cores.
  • improved accuracy of SN76489 core timings.
  • added support for some recently dumped unlicensed games.
  • improved emulation of 32k bankswitch hardware used by a few unlicensed games.
  • fixed behavior of Z80 banked reads from 68k RAM (verified on real hardware).
  • fixed support for 128K Pro Action Replay ROM.
  • added support for all recent korean ROM dumps by SMS Power.
  • added emulation of korean multi-game mapper (4-Pak All Action)
  • added pseudo-random RAM pattern initialization on Mark-III and Japanese Master System (fixes "Alibaba and 40 Thieves" & "Block Hole")
  • added port $3E emulation & internal BOOTROM support (Master System & Game Gear only).
  • added an option to set VDP mode (PAL/NTSC) independently from console region.
  • added an option to select original system master clock frequency (PAL/NTSC/AUTO), emulation will run at selected frequency when VSYNC is disabled.
  • fixed 68k context loading/saving (Sol Deace).
  • fixed C89 incompatibilities for better portability.
  • removed use of "long int" type for portability on 64-bit platforms.
  • moved savestate zlib compression out of emulation core (for ports that don't use it).
  • various optimizations.
  • removed ROM load device selection from Load Menu: default ROM device must now be configured in menu settings.
  • added specific load buttons, browsers & saved paths for each systems, this also fixes slowdowns caused by screenshot loading when browsing from slow devices.
  • added support for left/right buttons as page up/down keys in ROM browsers
  • added right analog stick as default "return to menu" key for Gamecube controllers
  • added alternate remappable menu key combo for Gamecube controllers
  • added an option to disable VSYNC (emulator is synced with audio hardware instead of video).
  • added an option to boot system from "BIOS", with or without cartridge.
  • added Master System & Game Gear "BIOS" support (files should be named bios_U.sms, bios_J.sms, bios_E.sms & and copied to /genplus/bios directory).
  • replaced "Hard Reset" button by a Soft Reset for systems having a Reset button (Mega Drive / Genesis & Master System)
  • State & SRAM files are now only compressed when saving to Gamecube Memory Cards
  • various fixes & cleanup.
  • compiled with devkitPPC r26 & libogc 1.8.11.
  • improved progressive mode support when component cable is detected (hold B during startup to switch menu video mode configuration)
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