03368: shienryu: No Game ID or Copyright text is shown before Title Screen

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03368	Graphics	Minor	Random	Jul 31, 2009, 18:40	Feb 17, 2013, 16:01

Tester	Tafoid	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Fixed	OS
Status [?]	Resolved			Driver	sega/saturn.cpp
Version	0.133	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	03368: shienryu: No Game ID or Copyright text is shown before Title Screen
Description	Currently, when you start the game, the screen shows black/blank. The game plays fine though otherwise. Normal behavior is to have it show the Game ID, Copyright/Patents screens.
Steps To Reproduce
Additional Information	stv.c merged into saturn.c in 0.142u2
Github Commit

Flags
Regression Version	0.129u1
Affected Sets / Systems	shienryu

Attached Files	shienryu-0129.gif (11,842 bytes) May 22, 2011, 08:32 Uploaded by M.A.S.H.

No.04755 Kale Developer Aug 3, 2009, 01:45 edited on: Aug 3, 2009, 01:47	Caused by Aaron's changes for RAM-based charsets. If you go in the GFX viewer and see the first gfxdecode by selecting tile number 0x3000 and color 0x40, gfxs will be fine when exiting the viewer...likely that the dirty functions doesn't catch it.
No.04764 Haze Senior Tester Aug 4, 2009, 09:43 edited on: Aug 4, 2009, 10:01	It only decodes tiles on first access now, rather than when they're marked as dirty right? STV accesses the decoded tile data directly (as do several other drivers) so I can see why it might not catch it... Seems like a flaw in the logic of the new system if that's the case. edit hmm, or not? It's been a while since I looked at that driver edit2 well, it still does, but the code has changed so much since the last time I looked at it, I can't follow it at all, the explained case might already be handled tho.
No.07382 Tafoid Administrator Apr 18, 2011, 19:20	Note exactly sure what fixed this, but something shook loose the speck of dirt that caused this :)
No.07457 M.A.S.H. Senior Tester May 22, 2011, 08:32	Fixed Regression Version. It is 0.129u1 and not MAME 0.128u4. It shows the Game Cart ID and Copyright/Patents screens in 0.128u4-0.129. See animated screenshot shienryu-0129.gif. And since 0.129u1 the Copyright/Patents screens are missing. This bug is not fixed!!!
No.07463 Tafoid Administrator May 22, 2011, 14:27	I've set to RANDOM because it shows text for me.
No.07464 Haze Senior Tester May 22, 2011, 16:06	Correct, it doesn't always reproduce. I did mention this when you set it to fixed, it was still happening here. The dirty marking isn't working properly in some cases, but I never managed to nail down what was causing it because the code looked OK to me. Almost certainly a silly math error somewhere in the calculations, or a certain type of DMA transfer not properly marking tiles as dirty?
No.09384 Kale Developer Feb 15, 2013, 14:33	I think this one is fixed too.
No.09389 B2K24 Senior Tester Feb 15, 2013, 20:39	seems OK here using 0.148u1
No.09399 Haze Senior Tester Feb 17, 2013, 13:50	yeah, not seen this for a while, I think it's fixed.
No.09401 NekoEd Senior Tester Feb 17, 2013, 16:01	If this happens randomly, could it possibly be a BTANB? It sounds like something that could quite possibly have happened with the same frequency on the original, but we'd need proof for that. Looks like this one might be a tough one.