01013: ssi: There is graphic garbage when you get the T bonus.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
01013	Graphics	Minor	Have not tried	Feb 8, 2008, 11:57	Dec 3, 2018, 13:09

Tester	Iaspis	View Status	Public	Platform
Assigned To		Resolution	Open	OS
Status [?]	Confirmed			Driver	taito/taito_f2.cpp
Version	0.104u3	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	01013: ssi: There is graphic garbage when you get the T bonus.
Description	In some rare occasions, when you get the 'T' bonus, the butterfly flickers and you can see graphic "garbage" in the bottom line of the stage, as shown in the attached pic. I have only reproduced this one in a 2p game and it's quite rare, so please be patient. The flicking outline seems to be the "item" box in the center which rapidly changes position. Updated by robiza in 0.108u5: In the source you can find for ssi: IRQ6 does nothing. IRQ5 copies bytes 0 and 8 ONLY of sprite data (code, color, flip, ctrl). The other bytes of sprite data (coordinates and zoom) are updated by the main program. The same sprite data caching that works for dondokod avoids major glitches, but I'm not sure it's working right when the big butterfly (time bonus) is on screen (it flickers on and off every frame). The bug is evident with two players, butterfly and shot of the ship in the screen (not ever).
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version	0.102
Affected Sets / Systems	ssi

Attached Files	ssi0104u3gre.png (24,057 bytes) Feb 14, 2008, 17:52
Attached Files	ssi.zip (144,473 bytes) Nov 27, 2018, 13:51 Uploaded by MetalGod

No.15809 MetalGod Senior Tester Nov 21, 2018, 12:47 edited on: Nov 21, 2018, 12:54	I've reproduced the issue on mame 0.102. There's an UFO flying 2 or 3 times per level at the top of the screen. When shot, the UFO always drops a power-up represented by a Letter (very similar to arkanoid powerups). To reproduce this glitch you have to shoot the UFO and being lucky enough to obtain a T powerup. This powerup stops time while a butterfly appears on screen. It is a very weird issue. I've taken the T powerup about 6 times in several gameplays, and only 1 time the issue has appeared. Mame 0.102 version: Once the issue ocurrs, the graphic glitch is seen when shooting. I guess many changes have been done in the taito_f2 driver from mame 0.102 to the current one... I'll test this hard on mame 0.203 to verify if the issue still ocurrs.
No.15810 MetalGod Senior Tester Nov 21, 2018, 14:47 edited on: Nov 27, 2018, 13:51	After some testing I can confirm this is still happening in mame 0.203 I've recorded all the attempts before getting T powerup. In all savestates from 0 to 9 the glitch doesn't appear. In savestate recorded as "q" the glitch appears. Just grab dropping T powerup, and shoot during the butterfly sequence. I've always tested it with 2 players. It ocurrs about 10% of the times. *Edit. Savestates added to the ticket:
No.15866 Robbbert Senior Tester Dec 3, 2018, 10:10	The video that was embedded 11 days ago says "This video is unavailable". Please either fix the link or remove it.
No.15867 MetalGod Senior Tester Dec 3, 2018, 13:09 edited on: Dec 3, 2018, 13:09	It should work now.