07853: quarth: Sound tempo slightly slow

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07853	Sound	Minor	Have not tried	Jan 13, 2021, 09:38	Jan 17, 2021, 01:09

Tester	-Misc Reporters-	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	Windows 10 (64-bit)
Status [?]	Acknowledged			Driver	konami/blockhl.cpp
Version	0.227	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	07853: quarth: Sound tempo slightly slow
Description	Quarth's music is at the correct pitch, but the tempo is slower than the actual PCB. The crystal for the YM2151 seems to be correct (with the pitch not being a problem), so it is likely the game ticks the sound engine via the vblank interrupt.
Steps To Reproduce	Start game.
Additional Information	Transferred from GitHub Issues: https://github.com/mamedev/mame/issues/2983 I personally did not check if this problem still exists. This video was used as comparison in the issue: A similar issue was reported and closed 03399
Github Commit

Flags
Regression Version
Affected Sets / Systems	quarth

Attached Files

No.18391 galibert Developer Jan 16, 2021, 13:29	As far as I can tell, while the screen timings are incorrect in general (they should be identical to simpsons), the vblank itself is at the correct period.
No.18393 Fortuna Tester Jan 17, 2021, 01:09	checking the gameboy version of Quarth (has the same music), sounds exactly like the video, next check with the actual mame version and sounds very slow