* fixed potential load issues with non-zero backup RAM cart * disabled CD hardware reset on Soft-Reset (verified on real hardware) * disabled 68k and Z80 access to PRG-RAM when SUB-CPU is running (fixes 'Dungeon Explorer') * improved Word-RAM byte access accuracy (verified on schematics) * improved CDD status report accuracy (fixes track looping with Mode 1 patched games using MSU-MD driver) * improved CDD 'play' command accuracy (fixes 'Snatcher' Act 2 starting cutscene) * improved PAL Mega CD timing accuracy (fixes PAL 'Snatcher' intro synchronization) * improved Main-CPU & Sub-CPU idle loop detection (fixes 'Super League CD') * improved Sub-CPU synchronization with Main-CPU (fixes 'Soul Star')

* improved emulation of mirrored memory areas * improved CDC emulation (fixes random freezes during Jeopardy & ESPN Sunday Night NFL intro) * improved Timer interrupt timings and CDD interrupt accuracy (fixes audio stutters during Popful Mail FMV)

* added CDC & GFX register polling detection / synchronization * added optional support for external VORBIS library * added CD-ROM Mode 2 (Form 1 & 2) support (Wonder Library) (!!!warning: this breaks compatibility with previous savestates!!!) * improved frame emulation timing, now starts with vertical blanking to reduce input lag by one more frame * added optional dynamic allocation of cartridge/CD hardware buffer (for platforms with BSS size limitation) Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)

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