03821: contra, contraj, gryzor: Game freeze after the 2nd 3d stage's boss, before the level with horizontal scroll.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03821	Crash/Freeze	Critical (emulation)	Always	Apr 24, 2010, 19:38	Mar 21, 2011, 16:22

Tester	-Misc Reporters-	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS
Status [?]	Resolved			Driver	konami/contra.cpp
Version	0.137	Fixed in Version	0.141u4	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03821: contra, contraj, gryzor: Game freeze after the 2nd 3d stage's boss, before the level with horizontal scroll.
Description	When I die and continue in the boss, the game goes on. When I beat him without continuing, the character walks out of the screen and the game freezes. Made the savestate, will upload it here. Normal game without cheats, only non default thing is I changed difficulty from easy to normal in the DIP switches. MAME is the 0.137 normal exe from MAME.NET
Steps To Reproduce
Additional Information	Found by lionelrit - from: http://www.mameworld.info/ubbthreads/showthreaded.php?Cat=&Number=220039
Github Commit

Flags
Regression Version
Affected Sets / Systems	contra, contraj, gryzor

Attached Files	contra save slot 1.zip (21,948 bytes) Apr 24, 2010, 19:38
Attached Files	contraj save slot 2.zip (21,790 bytes) Apr 24, 2010, 21:17

No.06006 AWJ Developer Apr 24, 2010, 19:48	To clarify: The freeze only happens if (a) you set the Difficulty dipswitch to Normal (or higher?), not Easy, and (b) you get all the way to the boss and defeat it without ever continuing. IMHO it's highly likely to be an original game bug (or a quasi-intentional "kill screen")...
No.06243 sp3ctr3 Tester Jun 11, 2010, 16:52	signed up just to reply to AWJs note. I believe it is NOT an original game bug. Over at Twin Galaxies the required settings for setting a world record on the original arcade hardware is difficulty normal and only 1 extra life at 50,000pts. and those players have made it all the way through the game. I can confirm that I have the same problem with mame 0.137 freezing after beating the 2nd boss, the one after the 2nd base (tunnel sections).
No.07318 Kale Developer Mar 18, 2011, 13:45	People at MARP claims that the game doesn't freeze if you don't shoot another bullet when you kill the 2nd boss. source: http://forums.marpirc.net/viewtopic.php?f=10&t=14814&start=30#p53250
No.07320 hap Developer Mar 19, 2011, 22:04	It had the wrong main cpu (6809 instead of 6309). I can't reproduce the freeze anymore now in 141u4.
No.07330 Machone Tester Mar 21, 2011, 16:22	It also uses the C variant of the 6309 which means that the main cpu probably runs at 3mhz (or 3.57mhz). MAME currently has it at 1.5mhz and the game slows down at various points compared to the original pcb. It would be good if someone could eventually measure the real clocks from a pcb.