08785: gemini and silkworm: OKI MSM5205 is quiet compared to the PCB and OST

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08785	Sound	Minor	Always	Nov 10, 2023, 14:28	Jul 23, 2025, 21:04

Tester	danylopez123	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	tecmo/tecmo.cpp
Version	0.260	Fixed in Version	0.279	Build	64-bit
		Fixed in Git Commit	190fd35	Github Pull Request #

Summary	08785: gemini and silkworm: OKI MSM5205 is quiet compared to the PCB and OST
Description	Recently i've been listening to the Gemini Wing Soundtrack from the Tecmo Arcade Game Chronicle album, listening to the musics, seems that the OKI soundchip is at a higher volume, but of course then i tried to search a video that was recorded from the PCB but sadly, i got no result. Had to look in another gemini report and look in the comments part, It was back at the report number 01185 and then i saw Fujix's note posting a Youtube video with a PCB recording of the game, seems that the OKI soundchip is at the same volume from the Soundtrack. Here's the video: A .mp3 file have been included as well, is a music track from the OST I'm pretty sure the same problem happens with Silk Worm, from the same Soundtrack mentioned before, it haves a higer OKI volume. As with Rygar.. Rygar i don't know alot of it, i asume the OKI was used for the character voices, sounds somewhat quiet as well.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	gemini and silkworm

Attached Files	2-48. Round 1.mp3 (3,088,560 bytes) Nov 10, 2023, 14:28 Uploaded by danylopez123

No.21831 Augusto Tester Nov 15, 2023, 01:19	Rygar use MSM5205
No.23525 danylopez123 Tester Jul 23, 2025, 21:04 edited on: Jul 23, 2025, 22:37	I was gonna say that I've tested the changes and while Gemini Wing got changed, i also tried Silk Worm but seems that the OKI MSM5205 it's slightly louder than normal compared to the soundtrack but i couldn't add an additional file. [And i also couldn't find a PCB recording from Silk Worm] False alarm from me, turns out i had the sound chip volume increased before the change, restored it back to normal.

No.21831

Augusto

Tester

Nov 15, 2023, 01:19

Rygar use MSM5205

No.23525

danylopez123

Tester

Jul 23, 2025, 21:04

edited on: Jul 23, 2025, 22:37

I was gonna say that I've tested the changes and while Gemini Wing got changed, i also tried Silk Worm but seems that the OKI MSM5205 it's slightly louder than normal compared to the soundtrack but i couldn't add an additional file. [And i also couldn't find a PCB recording from Silk Worm]
False alarm from me, turns out i had the sound chip volume increased before the change, restored it back to normal.