06466: raycris: Soft resets during final boss fight

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06466	Gameplay	Major	Always	Jan 2, 2017, 12:57	Nov 16, 2018, 15:12

Tester	SSTO-31	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10 (64-bit)
Status [?]	Confirmed			Driver	sony/taitogn.cpp
Version	0.181	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06466: raycris: Soft resets during final boss fight
Description	During the final boss fight, the game freezes (BGM and sound effect still plays) and soft-resets back to Taito G-Net boot screen after few seconds. This occurs when the encroachment level is below 20% upon reaching stage 5 (Self Field), thus makes reaching the true final boss (and good ending, subsequently) impossible. This bug doesn't occurs when "normal" ending condition is met by having encroachment level above 20% upon reaching stage 5 however. Save state isn't attached due to large size (10 megs after compression), so I uploaded it elsewhere: https://www.dropbox.com/s/2d21xb8wkclxhzv/a.sta?dl=0
Steps To Reproduce	1. Reach True Last Boss condition: get to stage 5 (Self Field) with Encroachment level below 20% 2. After several minute of normal final boss (Dis-Human) fight, the game freezes and soft-resets back to Taito G-Net screen. Usually occurs sometime when the boss is performing a double laser beam pattern for the second time as seen in the attachment
Additional Information	It doesn't seem to be nvram-side issue, I've re-cleaned the nvram files and still getting the same result.
Github Commit

Flags
Regression Version
Affected Sets / Systems	raycris

Attached Files	0000.png (47,144 bytes) Jan 2, 2017, 12:57 Uploaded by SSTO-31 seconds before hang

No.13527 B2K24 Senior Tester Jan 6, 2017, 03:46	I'm able to confirm the reported behavior by using the supplied save state. It's really difficult to have the patience to play this game all the way through. Maybe someday...
No.13533 izius Tester Jan 7, 2017, 16:47	This bug happens also when facing the final boss in the alternate way, by letting the Encroachment level go up to 100%. To do that, just don't shoot any enemy. In a few minutes the counter will reach the maximum and the boss will attack you. This way, I can confirm the soft reset after a brief fight with the boss, using the 32-bit build and Windows XP SP3.
No.15787 MetalGod Senior Tester Nov 16, 2018, 15:12	Tested on mame 0.203 I can confirm the issue is still happening and the encroachment level doesn't matter at all. Knowing this makes future testing much more encouraging, cause keeping the encroachment below 20% during the whole game is nearly impossible. The game still crashes and resets when the final boss does his super laser shot seen in the attached image.