08000: yachtmn, mermaid: missing or misplaced graphic animations

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08000	Graphics	Minor	Always	Jun 4, 2021, 07:35	Jun 4, 2021, 19:12

Tester	jkburks	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10 (64-bit)
Status [?]	Acknowledged			Driver	sanritsu/mermaid.cpp
Version	0.231	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08000: yachtmn, mermaid: missing or misplaced graphic animations
Description	There is a sequence on level 3 where the player gets attacked by walruses or sea lions. I'm not 100% sure what they are supposed to be. In MAME these animals are static sprites with no animation. On the PCB they do a flip animation in the water and also whenever they cross land. There is also a bug in MAME where the large wave animation randomly becomes attached to the RANK text in the sidebar. It stays there until the screen is redrawn. This is not supposed to happen.
Steps To Reproduce	Play until you see the sea lions on level 3. Or load the attached 7.sta in MAME 0.231 Then refer to the PCB video timestamp below to compare. The Rank bug is difficult to predict. Just load the attached 9.sta in MAME 0.231
Additional Information	Recent long play video from Yachtsman PCB. 00:08:57 is the timestamp for the missing animations. Attached screenshot of the flip animations from the above video: Also attached enlarged snap of the Rank bug. There does not appear to be any race condition or rank position that triggers this bug. I have had it happen at all different times, ranks, and levels.
Github Commit

Flags
Regression Version
Affected Sets / Systems	yachtmn, mermaid

Attached Files	yachtsman_rank_bug.jpg (63,288 bytes) Jun 4, 2021, 07:35 Uploaded by jkburks
	yachtsman_missing_animation.jpg (45,442 bytes) Jun 4, 2021, 07:36 Uploaded by jkburks
	yachtmn.zip (3,982 bytes) Jun 4, 2021, 07:36 Uploaded by jkburks Yachtsman bug save states MAME 0.231