08179: galaxygn: Galaxy Gunners and Fantasy Land - Yamaha YM2151 Sound Frequency pitch incorrect? Have youtube video of PCB

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08179	Sound	Minor	Always	Jan 14, 2022, 16:52	Jan 17, 2022, 07:02

Tester	vidpro1	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Confirmed			Driver	edevices/fantland.cpp
Version	0.239	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08179: galaxygn: Galaxy Gunners and Fantasy Land - Yamaha YM2151 Sound Frequency pitch incorrect? Have youtube video of PCB
Description	I found a video of a Galaxy Gunners and Fantasy Land PCB on youtube. Sounds like the frequency setting on the Yamaha chip is too low anyone else have a PCB? Unfortunately the audio volume is too low on youtube. It sounds like it is off by 30% -33% pitch match test with -debug overclock ymsnd 133% Maybe the YM2151 OPM needs to be at 4MHZ? Probably all the games on that hardware driver have the wrong frequency. ym2151_device &ymsnd(YM2151(config, "ymsnd", 3000000)); ymsnd.irq_handler().set(FUNC(fantland_state::galaxygn_sound_irq));
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	galaxygn

Attached Files

No.19690 Osso Moderator Jan 15, 2022, 06:38	In the following link there's a Galaxy Gunners PCB where the visible XTAL in the audio section is 8 MHz. So maybe 8 MHz / 2 for the YM2151? https://arcadeclassics.com.au/arcade_games/video-game-pcbs/galaxy-gunners/
No.19694 Fujix Administrator Jan 17, 2022, 07:02	It sounds just like the video by setting sound clock at 133%.