01686: ldrun3, ldrun3j: visible area problem

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
01686	Graphics	Minor	Always	Apr 7, 2008, 18:51	Apr 22, 2008, 08:51

Tester	robiza	View Status	Public	Platform
Assigned To	nicolasa	Resolution	Fixed	OS
Status [?]	Resolved			Driver	irem/m62.cpp
Version	0.124u1	Fixed in Version	0.124u4	Build
		Fixed in Git Commit		Github Pull Request #

Summary	01686: ldrun3, ldrun3j: visible area problem
Description	when the screen scroll up there're graphic glitc at the bottom of the screen probably the visible area is: MDRV_SCREEN_VISIBLE_AREA((648-384)/2, 648-(648-384)/2-1, 08, 31*8-1)
Steps To Reproduce
Additional Information
Github Commit

Flags	Verified with Original
Regression Version	0.124u1
Affected Sets / Systems	ldrun3, ldrun3j

Attached Files	0008.png (8,175 bytes) Apr 7, 2008, 20:14
Attached Files	ldrun3jp.gif (29,767 bytes) Apr 21, 2008, 19:23

No.00744 nicolasa Developer Apr 20, 2008, 09:28	The visible area was changed to fix #1469. Since that one is verified on PCB, and the two games most likely run on the same PCB, I have to assume that the visible area in ldrun3 is correct unless a test on the real PCB proves otherwise.
No.00747 Stefan Lindberg Senior Tester Apr 20, 2008, 11:35 edited on: Apr 20, 2008, 11:38	I have a "LDRUN3JP" PCB... it's just too bad i can't record any video of it since no IREM (m62) games sync with my capturecard but i could try to explain with words :-) At the title there is a black border at the bottom both MAME and PCB does this so it's correct so far but then on the PCB just before the scrolling upwards begin the topmost graphics "one bricklayer" disapear and nothing is added at the bottom so the visible area is small and it's not until the scrolling is complete that the whole screen fills with graphics "top and bottom bricklayer graphics" is added. I hope this explanation is understandable? :-)
No.00756 nicolasa Developer Apr 21, 2008, 17:31	I don't understand sorry. Could you please try to reexplain what's different between MAME and PCB?
No.00757 Stefan Lindberg Senior Tester Apr 21, 2008, 19:26	I have uploaded an animated gif to show how the PCB behaves. Just before the scrolling begin the top graphics disapear, so when it scrolls there is no graphics shown at bottom and top where the black areas are and it is filled only when the scrolling ends.
No.00759 nicolasa Developer Apr 22, 2008, 08:51	thanks, it appears that the hardware can control masking of the top and bottom rows.