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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08788 Sound Trivial Always Nov 17, 2023, 14:55 Jan 31, 2024, 23:33
Tester danylopez123 View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10/11 (64-bit)
Status [?] Driver
Version 0.260 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08788: othunder: Is the game supposed to be in Mono?
Description Okay, so, i'm confused.
I know for version 0.197, from Mameinfo i readed this:

- 0.197: Changed Operation Thunderbolt to mono speaker, as shown on schematics and verified on real board [Guru]. Added ADC0808 A/D Converter to Operation Thunderbolt. Use MCFG_SCREEN_VBLANK_CALLBACK instead of MCFG_CPU_VBLANK_INT [Dirk Best]. Changed MC68000 CPU1 clock speed to 12MHz.

I can understand the "verified" thing but, the game it's still having the Stereo Separation from Machine Configuration, not to mention, from Taito Legends, i know it's a compilation of Taito games that are emulated even from the console ports but there, the game it's having the Stereo sound.

Here's a video from Taito Legends, recorded from the PS2 hardware:

This is nothing like a major thing or anything, i'm just confused as i marked this as "Trivial" so, if the game is still suposted to be in Mono, just feel free to close this report.
Steps To Reproduce
Additional Information
Github Commit
Regression Version
Affected Sets / Systems othunder
Attached Files
png file icon othunder.png (56,438 bytes) Nov 17, 2023, 14:55 Uploaded by danylopez123
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Nov 18, 2023, 16:04
Even the "as shown on schematics" claim doesn't make sense to me, since sheets 20-22 of the schematics do show separate paths for the left and right audio channels going all the way to the connector pins.
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Nov 19, 2023, 21:58
So.. i guess that means the game was suposted to be in Stereo, i knew i was confused with this because looking back at Taito Legends, even emulated, the game was in Stereo.
Then this should be reverted back to Stereo.
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Nov 20, 2023, 01:53
I'm not convinced either, the pinout harness suggests stereo hookup.