06518: blzntrnd: Sprite layer disappears entirely after completing single player game

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06518	Graphics	Major	Have not tried	Mar 15, 2017, 19:21	Nov 18, 2017, 23:14

Tester	Kale	View Status	Public	Platform	MAME (Unofficial Binary)
Assigned To	Kale	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	metro/metro.cpp
Version	0.183	Fixed in Version	0.192	Build	Normal
		Fixed in Git Commit		Github Pull Request #

Summary	06518: blzntrnd: Sprite layer disappears entirely after completing single player game
Description	After completing Blazing Tornado and entered initials, game sprites completely disappears from game, including attract mode and gameplay.
Steps To Reproduce	Finish the game or playback the given example inp.
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	blzntrnd

Attached Files	blzntrnd_1cc_373200.zip (237,885 bytes) Mar 15, 2017, 19:21 Uploaded by Kale Inp containing a completed game, done with WolfMAME 0.183
Attached Files	0002.png (23,466 bytes) Mar 15, 2017, 19:21 Uploaded by Kale Example broken graphics

No.13699 B2K24 Senior Tester Mar 15, 2017, 21:18	Confirmed with playback of supplied inp.
No.14442 Kale Developer Nov 18, 2017, 23:14	It reads the video registers when the Human logo appears in the ending, also showing up a missing piece of it where the final boss gets tackled off by all the characters. In short: never ever assume HW video registers aren't read-backable!