This next post actually concerns the state of emulation, namely Master System emulation, rather than being an emulator plug like some of my other posts in this thread.
As you all know, the Japanese Sega Master System plays a rendition of the main theme from Space Harrier
when powered on without a game inserted. With pre-PS1 emulation being constantly lauded as being near-perfect, I decided to feed a dump of the Japanese v.21 Master System BIOS into several emulators to gauge how accurately this feature was replicated, with less than stellar results.
In Bizhawk and MAME, the FM was much too quiet.
Osmose and Mednafen's Master System core (based off Charles MacDonald's SMS Plus) threw up black screens.
Standalone SMS Plus refused to start.
The respectable cycle/bus accurate emulator TwoMbit and the libretro port of Genesis Plus GX fared a bit better than all of these, but there appeared to be strange audio dropouts, as if certain notes weren't being played at times, and some of the lower tones were at the wrong pitch.
The emulator that came closest to playing the theme correctly was Kega Fusion, though it only played the theme when the "Power On" option was selected. When the BIOS was actually loaded into the program, it went to a black screen. The now outdated emulator MEKA also came somewhat close, albeit with generous amounts of crackle and other random noise. Like Fusion, MEKA didn't appear to actually use the BIOS - when the BIOS was loaded as a ROM, it also went to a black screen.
The accuracy-conscious multi-console emulator bee may
also come close, but it appears to be on the buggy side and I couldn't get it to run at full speed.
Overall, a bit of a letdown. The next time you hear someone claiming all pre-PS1 emulation is basically perfect, kindly correct them.
No, that's dumb. BizHawk is smart enough to read formats, headers and whatnot and load the appropriate core and bios for whatever ISO you throw at it.
The same multimulator has a bsnes-performance core which is still highly accurate and perfect for pretty much everyone if you tweak a few of the default settings.
tldr: just use BizHawk, it's good. The only thing it's missing is a MAMEUI-like game browser (although I think you can get a separate frontend, maybe?)
reports bugs in its SNES core, though. Erratic framerate and jumpy interlacing don't sound very appealing and may even be game-breaking for some. Not to mention that the Seiken Densetsu 3
fix sounds like a per-game hack. That kind of ePSXe-style fix doesn't belong in a SNES emulator.
EDIT: Turning up the FM volume to max in MAME yields slightly better results, although it still sounds off. Oddly enough, MAME, TwoMbit, and Genesis Plus GX appear to sound closer to each other than they do to the real thing.