08895: bbustersu, bbustersua: Missing sound effects/music channels that are present in other versions

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08895	Sound	Minor	Always	Jul 29, 2024, 10:47	7 days ago

Tester	JimCarlTay	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	snk/bbusters.cpp
Version	0.267	Fixed in Version	0.276	Build	64-bit
		Fixed in Git Commit	0ba9e43	Github Pull Request #

Summary	08895: bbustersu, bbustersua: Missing sound effects/music channels that are present in other versions
Description	Game: Beast Busters This only applies to the US versions (Versions 2 and 3). Unlike the International (bbusters), Japanese 2-player (bbustersja), and Japanese 3-player (bbustersj) versions, certain sound effects (like the crowd scream in the title screen, death sounds of human zombies when you shoot them, etc.) are missing or do not play. There are also less instruments/channels playing for the music. A video by lukemorse1 of the game running on real hardware (he was working on PCB repairs there and it's the US version) has the sound effects and music channels that were missing currently on MAME's emulation of the US versions.
Steps To Reproduce	1. Load either US version of the game (bbustersu, bbustersua). 2. The most obvious cue regarding this issue is that there is no crowd scream at the beginning of the title screen. The sound effect is present in other versions (International, Japanese 2-player, and Japanese 3-player).
Additional Information	Originally checked as "Possible" due to initial uncertainty whether this is censorship, a real hardware quirk, or an emulation bug. As of March 14, 2025, that flag is now unchecked, and the "Verified with Original" flag has been checked since the bug could now likely be caused by a missing sound ROM.
Github Commit

Flags	Verified with Original
Regression Version	0.128u4 or older
Affected Sets / Systems	bbustersu, bbustersua

Attached Files

No.22241 Robbbert Moderator Jul 30, 2024, 08:36 edited on: Jul 31, 2024, 00:53	I can confirm that some sounds are missing in the U.S. versions, but it seems to be deliberate, for whatever reason.
No.22243 JimCarlTay Tester Jul 31, 2024, 05:01	If it's censorship or a real hardware quirk, then I might be too used to the sound effects missing in the US versions being present since my personal preference is to run or play the international version.
No.23133 JimCarlTay Tester 18 days ago edited on: 18 days ago	UPDATE: I found a video of the US version on real hardware that may prove that the sound effects and music channels that are missing on MAME's emulation should have been present, and I think this could be due to the fact that there is a missing ADPCM sound ROM. Also, another find of mine shows that as of 0.275, the bootup jingle (similar to the one heard in Search and Rescue (searchar)) can now be heard instead of random high-pitched dings, which applies to all versions of Beast Busters (bbusters), also verified on real hardware. Status could now be changed to Confirmed.
No.23135 hap Developer 17 days ago edited on: 17 days ago	USA version added here with correct ROM loads: https://github.com/mamedev/mame/commit/52e6f0c7d0dfa8f11a7eab1ef88678e713c52c49 Broken by Haze here, I doubt he remembers why. Maybe he experimented something and forgot to put it back. https://github.com/mamedev/mame/commit/4af951fcb977b4e89473576552363edea14db415 the later added 2nd USA version was half copy-pasted from the 1st set, including the error. ~~~ FYI the boot jingle bugfix you mentioned is this one https://github.com/aaronsgiles/ymfm/pull/67
No.23137 Haze Senior Tester 17 days ago	That's almost certainly a case of forgetting to hit save again before commiting, or it not picking up a change for some other reasons. The sound emulation was not good at the time, so I would have been making sure it wasn't a case of the samples being in the wrong region.