06400: bstars2: Graphic issue on right edge of screen while scrolling

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06400	Graphics	Major	Always	Oct 6, 2016, 23:13	Oct 7, 2016, 09:21

Tester	ozfalcon	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Duplicate	OS	Linux (32-bit)
Status [?]	Closed			Driver	neogeo/neogeo.cpp
Version	0.178	Fixed in Version		Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	06400: bstars2: Graphic issue on right edge of screen while scrolling
Description	When scrolling to the right (After hitting far left boundary) graphic artifacts are displayed on right edge of screen.
Steps To Reproduce	1. Play game 2. Hit ball to far left Boundary 3. On the balls rebound from boundary - Observe the right screen edge.
Additional Information	I don't have an original to compare against - So I'm not sure if this is expected - But I wouldn't think so as it's pretty visible.
Github Commit

Flags
Regression Version
Affected Sets / Systems	bstars2

Attached Files	bstars2_Scroll_Bug.png (35,705 bytes) Oct 6, 2016, 23:13 Uploaded by ozfalcon

No.13234 zaxxon Tester Oct 7, 2016, 02:56	i think this video below is not mame perhaps so maybe useful have a look at 18:40 into the video (note: i noticed some garbage on the right hand side of the screen, at around 18:20 ... maybe it happens more in the video, i did not watch it all or look very closely)
No.13235 ozfalcon Tester Oct 7, 2016, 03:55 edited on: Oct 7, 2016, 04:03	I think you may be right. You can hear him select it (Via controller?) @ 1:00 min into the video before it cuts to the in game screen. You can also see a "Cheat" system @ 1:20 - Never seen anything in Mame that looks like that.
No.13236 zaxxon Tester Oct 7, 2016, 04:19 edited on: Oct 7, 2016, 04:23	just had a look at 1:20 -- then google took me to: http://unibios.free.fr/ "The UNIVERSE BIOS is for owners of MVS or AES hardware that want an easy way to change country region or between Arcade or Console mode on boot. Also included are other features that are not possible using the standard MVS bios. The UNIVERSE BIOS is also designed to give easy access to things like inserting coins, test mode and memory card management when using the joystick ports only. Of course the BIOS still allows standard operation too. "
No.13237 zaxxon Tester Oct 7, 2016, 04:28	... so going by the youtube video showing the actual hardware, it kind of seems like the garbage on the right hand side of the screen in your mame screenshot is 'worse' than what you get when using the actual hardware, but hopefully the devs can give a more expert qualified opinion on this matter than i can =)
No.13238 Haze Senior Tester Oct 7, 2016, 09:07	things like this happen on pretty much every neogeo game, they're not bugs.
No.13239 Tafoid Administrator Oct 7, 2016, 09:20	Excess on the borders is expected for many neogeo games. This is known and present in actual arcade titles. http://mametesters.org/view.php?id=2407 We also have policy not to accept neogeo graphic bugs unless they are first determined (with actual hardware) to be valid. http://mametesters.org/rules.html NeoGeo Graphic Glitches We have received a lot of graphical glitches in NeoGeo games such as garbage, flickering etc. and usually they are original bugs. So we will accept suchlike minor graphical issue of NeoGeo games only if you confirmed it with the original. Just be mindful of future reports and be sure to review what is considered valid or invalid before reporting.