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Alien Challenge MAME audio regression fixed since 0.234

Open Panderner opened this issue 6 months ago • 8 comments

For some reason audio is incorrect from FBNeo builds after https://github.com/finalburnneo/FBNeo/commit/40f419383d9080f625fb35da41a5fe44f0382c36 before MAME fixed no background audio in 0.234

MAME:

https://github.com/user-attachments/assets/94581b62-8c24-4d61-8f33-3bf1f235c608

FB Neo:

https://github.com/user-attachments/assets/ece6d715-9111-408e-9848-f7bdc16089e5

Panderner avatar Jul 05 '25 18:07 Panderner

Thanks, I'll try to figure it out! btw: I tried the earlier code, and the missing instruments are still missing. Also, it seems like I can't get the audio cpu to write any of the fm registers. (it's the fm instruments (ymf262) that are missing)

best regards,

  • dink

dinkc64 avatar Jul 06 '25 12:07 dinkc64

Findings, so far: The missing sound never worked in fbneo (I tried old exe's.. If you have one where it works, please zip and upload it here!), or mame before .234 in .234, came Aaron Giles's new ymfm soundchip emulation, which fixed the sound. ymfm isn't perfect, though, it has tons of bugs with other games. I wouldn't consider porting ymfm until it's a bit better.

I'm not totally sure how to go about fixing this, though.

best regards,

  • dink

dinkc64 avatar Aug 10 '25 04:08 dinkc64

ymfm isn't perfect, though, it has tons of bugs with other games. I wouldn't consider porting ymfm until it's a bit better.

Since MAME 0.275, fixes were made to YMFM to address audio issues in some games. What's most noticeable there is the music improvements in Battlantis compared to previous MAME versions and that the bootup jingle in Beast Busters is now correct.

JimCarlTay avatar Aug 10 '25 05:08 JimCarlTay

Yes, but there's about 30 other issues that need to be fixed before it gets my attention. Of course, if someone else would like to implement ymfm into fbneo before me, that would be nice, too

dinkc64 avatar Aug 10 '25 05:08 dinkc64

In the game Pretty Soldier Sailor Moon (Version 95/03/22B, Europe) (sailormn - cave) there is also no sound at the beginning of the splash screen

ani917 avatar Sep 29 '25 00:09 ani917

ani917, I just tried, and it sounds exactly the same in MAME and FBNeo, am I missing something?

dinkc64 avatar Sep 29 '25 05:09 dinkc64

I'm not sure if this is a game or emulator error, because when the game-demonstation starts there is no sound of music either, although it is in the game itself

as I found out, the game is a little unfinished https://tcrf.net/Pretty_Soldier_Sailor_Moon

ani917 avatar Sep 29 '25 11:09 ani917

The only thing I can recommend: go into the game's settings with F2 and make sure "Sound on attract" is set to On

dinkc64 avatar Sep 29 '25 13:09 dinkc64