04674: shinobi, shinobi1: Shinobi (System 16A) 'Popping Audio' Issue

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
04674	Sound	Minor	Always	Feb 13, 2012, 18:25	Feb 15, 2012, 12:00

Tester	pri88	View Status	Public	Platform	MAMEUI
Assigned To		Resolution	No change required	OS	Windows XP (32-bit)
Status [?]	Closed			Driver	sega/segas16a.cpp
Version	0.145	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	04674: shinobi, shinobi1: Shinobi (System 16A) 'Popping Audio' Issue
Description	Load any of the Shinobi 'SYSTEM 16A' versions (including clones/bootlegs). There are lots of audio popping/clicking sounds, including a noticeable 'pop' when the game is first loaded, as well as several 'pop' sounds when you start a game and hear the speech to announce you are about to begin 'MISSION ONE...', and also a pop sound every time you JUMP during gameplay. IMPORTANT: The SYSTEM 16B versions (including clones/bootlegs) are OK and not affected.
Steps To Reproduce	1. Load any of the Shinobi SYSTEM 16A versions (including clones/bootlegs) 2. Listen for the various pops/clicks as you play the game (read the text above for examples of when the pops/clicks can be heard).
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	shinobi, shinobi1

Attached Files

No.08194 Tafoid Administrator Feb 13, 2012, 23:15	I'm leaning towards not a bug. The reason is that both 16A and 16B are different sound setups and it's unreasonable to expect they initialize the same, act 100% the same. Unless you can prove that an original system16A board does not do the same things you describe (through a PCB audio/video recording), I do not believe we can continue on this. Sound details System 16A: Z80 (':soundcpu') @ 4.00 MHz YM2151 (':ymsnd') @ 4.00 MHz DAC (':dac') System 16B: Z80 (':soundcpu') @ 5.00 MHz YM2151 (':ymsnd') @ 4.00 MHz UPD7759 (':upd') @ 640.00 kHz
No.08197 Fujix Administrator Feb 14, 2012, 22:55	We want sound capturing from the original board to prove this issue.
No.08198 pri88 Viewer Feb 15, 2012, 01:06	ok unfortunately i cant help out there so apologies. * * * note to any shinobi fans out there..... i recommend playing the SYSTEM 16B version. that way you don't have to hear a popping sound every time you hit the jump button * * *