I'll give my latest results.
GB/GBC
RA 1.8.1 - Has every feature & stable.
WiiMednafen 0.2-pre - A very solid alternative.
NES/FDS
FCEUltraRX - Runs everything without issues.
WiiMednafen 0.2-pre - Crosshair is not working for Light Gun games when used as WFL plugin. Some translations & hacks do not boot (mapper support).
FCEUltraGX Tanookie - Works well but I get freeze very often with this fork.
FCEUltraGX Official - Have not tested latest version, but the freeze issue has always been a problem for me with this emulator.
Some tests results:
beetle_pce_fast core (Retroarch 1.7.6) from Fledge's pack
It's working good for both Hucards and CD's. I've tested a good 30 Pce Cd games, including Gate of Thunder (first two levels). I'm using CD Image Cache enabled (Quick menu -> Options). The only game where I keep hearing loud scratchy noises is Spriggan Mark II (on the 1st level, after the intro). Every other game runs perfectly, no audio noises or skipping video frames.
I'll try to find a different dump for Spriggan Mark II.
Scumm VM also works as separate plugin for non Dos/Win games (Amiga, C64, etc.). I'll include a ReadMe with instructions to create them.
For example, I'm using it to have C64 Zak Mckracken in my C64 coverflow (way better than playing it on Frodo). And it's my favourite version of the game.
There's only one big limitation (unless
@Wiimpathy knows a workaround for this): you can't do it for multiple games at once. You have to create a plugin for each game you want to add, because in the argument line you have to type the name found in scummvm.ini (e.g. zak).
However, it's a nice feature to have.
Uae Wii v.12
I'm really impressed by how much it improved with this update. Last time I tried, performances were not really good.
But now I'm having a blast playing the three Turrican games (extended .adf are also working, to avoid disk swapping), or Shadow of the beast serie with really great performances.
I'm having some incompatitbility with some games (like Wolfchild) but I'll try with other dumps.
There are still some issues with the mouse (same invisible barriers as Dosbox) but you can play most of the Joystick games with no issues.
Satellaview on snes9xgx.ini
I'm not familiar at all with the Satellaview. It's surely a weird system.
All the doors in the village are closed. I don't know how you started the games on Satellaview.
If I press Home I can see the correct game title on top, so I think the game was booted correctly. But I can't do anything.
I'm using:
arguments={device}:/{path}/|{name}
and
arguments={device}:/{path}/|{name}|{loader}
no difference
Vectrex
The emulator doesn't boot into the game, but I'm in the menu.
I can select and run the games from there, but that's not how it should work.
I'm using
arguments={device}:/{path}/{name}