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Thread: GenPlus GX 1.7.0 - Genesis / Mega Drive, Sega/Mega CD, Master System, Game Gear Emu

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    Default GenPlus GX 1.7.0 - Genesis / Mega Drive, Sega/Mega CD, Master System, Game Gear Emu

    eke-eke updates its port of the Megadrive emulator Genplus Wii. The big news consits in adding support MegaCD games. It will first copy the appropriate bios (renamed bios_CD_U.bin, bios_CD_E.bin, bios_CD_J.bin) in / genplus / bios / and have your games in ISO format or BIN. The author states that the CD-DA tracks are not yet supported. The changelog of the size of a novel describing any changes, for the curious.

    changelog Plus GX 1.7.0 (01/07/2012)

    Genesis Plus GX 1.7.0 (01/07/2012) (Eke-Eke)

    * 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

    * to play CD games, original BIOS ROM files are required in /genplus/bios/ directory: unzip & rename them to bios_CD_U.bin, bios_CD_E.bin, bios_CD_J.bin
    * CD audio tracks (CD-DA) are not supported (yet)

    * 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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