05979: jumping, jumpinga: Sound is slightly wrong in jumping due to incorrect clock dividers / clocks

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05979	Speed	Minor	Always	Jul 4, 2015, 22:01	Jul 29, 2015, 17:42

Tester	system11	View Status	Public	Platform	MAME (Official Binary)
Assigned To	system11	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	taito/rbisland.cpp
Version	0.163	Fixed in Version	0.164	Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	05979: jumping, jumpinga: Sound is slightly wrong in jumping due to incorrect clock dividers / clocks
Description	Kazblox asked me to check the clocks on my Jumping PCB since the sound is slightly wrong. After doing so I found: 1) The crystals are wrong (or very likely multiple bootleg variants exist) - the 18.432mhz can also be a 16mhz, which makes little to no difference in-game 2) Above makes no difference because that's the CPU crystal, speeds should be as follows (assume for 16mhz fitted): 68k - 16/2 Z80 - 24/4 YM2203 - 24/8 (for reference) Y3014B - 1Mhz (driven by 2203s) Using the above clocks and dividers in a test build, MAME sounds correct. Not sure who is going to submit the actual fix. Side note will be dumping the variant I have since while very similar looking, the ROM layout is different - title screen matches jumpinga version.
Steps To Reproduce
Additional Information
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	jumping, jumpinga

Attached Files

No.11840 system11 Senior Tester Jul 5, 2015, 21:37	https://github.com/mamedev/mame/pull/242 Contains dump of board new timings came from