06646: sonicfgt: Game with speed to 100% in mame is 5x too slow

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06646	Speed	Major	Always	Aug 6, 2017, 13:38	Aug 9, 2017, 20:04

Tester	GIGI88200	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Bugs That Aren't Bugs	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	sega/segac2.cpp
Version	0.185	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06646: sonicfgt: Game with speed to 100% in mame is 5x too slow
Description	The game is 5 times too slow (with turbo 500% it's a coherent speed) The sound is at the right speed but is therefore desynchronized
Steps To Reproduce	just start a game
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	sonicfgt

Attached Files

No.14078 Tafoid Administrator Aug 6, 2017, 15:33	I don't see any oddness in how it plays for 0.185, 0.188, or latest GIT. All the sounds sync to the images on screen and the gameplay elements seem consistent and logical. Plays just like the youtube video.
No.14079 GIGI88200 Tester Aug 6, 2017, 16:13	It's not like the video in my home, the ship and the sprites are slowed down, while mame does not saturate I would try in 0.188 tonight
No.14083 B2K24 Senior Tester Aug 6, 2017, 21:06	This is a weird issue. I can confirm what GIGI88200 is reporting. I'm getting different results launching the game about 20 times. Sometimes the speed is correct and other times I get the behavior that's being reported here. In either instance MAME reports the game running at 100.00% It looks like you can trigger it if you press P1 Start when Sonic is talking and waving his finger. You get immediate slowdown and it never recovers.
No.14085 MetalliC Developer Aug 7, 2017, 07:42	not a bug, but the way this game is designed, likely debug leftovers. pressing P1 Start makes it work like slowmo, P2 Start return speed to normal.
No.14086 Tafoid Administrator Aug 7, 2017, 09:31	Yup. The start buttons do indeed control speed. Not sure if it is a special feature of the cabinet to slow the game down for the youngest players or not, but it does indeed seem to be something designed/programmed into the game. BTANB, I think.
No.14090 Haze Senior Tester Aug 9, 2017, 20:04 edited on: Aug 9, 2017, 20:04	start buttons should probably be unmapped by default in this case as I doubt they were on the cabinet.. should be IPT_OTHER maybe ?