03483: mk2 and clones: graphics glitches in attract mode

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03483	Graphics	Minor	Always	Oct 23, 2009, 17:21	Nov 11, 2009, 03:31

Tester	MetalliC	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Bugs That Aren't Bugs	OS	Windows XP (32-bit)
Status [?]	Resolved			Driver	midway/midtunit.cpp
Version	0.134u3	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	03483: mk2 and clones: graphics glitches in attract mode
Description	I see a strange black stripe on the right side of the screen in attract mode
Steps To Reproduce
Additional Information
Github Commit

Flags	Verified with Original
Regression Version
Affected Sets / Systems	mk2 and clones

Attached Files	mk2.png (137,307 bytes) Oct 23, 2009, 17:21
Attached Files	vlcsnap-2009-10-27-10h20m13s24.png (102,089 bytes) Oct 27, 2009, 14:25

No.05053 Tafoid Administrator Oct 23, 2009, 17:50 edited on: Oct 23, 2009, 17:50	I know I've seen this discussed before as not being a bug, but I can't find a document or source of it. This behavior has been the same as long as I can remember. I'll keep searching..
No.05055 Tafoid Administrator Oct 24, 2009, 04:02	I'll confirm as possible for now until some video can be sourced showing the space to the right. If anyone can give definitive proof, please post the video.
No.05067 Tafoid Administrator Oct 27, 2009, 14:24 edited on: May 31, 2012, 05:22	Found this which shows plainly a line on the right side during the intros. I'm willing to bet this is BTANB. Check at about 0:43 or look at snap I took.
No.05068 Heihachi_73 Tester Oct 27, 2009, 14:51	I'm pretty sure that the black area would be simply put off the screen on the real thing, the MK series are known for that type of leftover graphics. Being a blitter type system, it can use any amount of pixels up to its 'limit' of 400x256 or whatever, which it doesn't always use as shown above. In fact, all three of the classic MK games have the same type of graphical 'glitch'. In MK1, there are two black areas at the top on the character bio screen, and more black on the right side of the screen when the character portraits are going down each side. In MK3 and UMK3, some of the stage backgrounds scroll off the side (e.g. Jade's Desert has a blue line on the right), and the right of the vs. screen has more unused areas (the right side dragon, but not the character's graphic under it). Just Midway being lazy I guess. I'd say it's not a bug, but a similar sort of thing as the NeoGeo games when they are displayed in 320x224 mode; a lot of games only used 304 out of the 320 pixels available.
No.05071 Phil Bennett Developer Oct 27, 2009, 18:42	It's visible on the actual PCB.
No.05153 Fujix Administrator Nov 11, 2009, 03:31	BTANBized the report.