08862: mtchxl6k: Starting Trivia Whiz or Power Quiz causes emulated game to crash

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08862	Gameplay	Major	Always	May 10, 2024, 17:43	May 13, 2024, 13:23

Tester	cuavas	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Confirmed			Driver	merit/mtouchxl.cpp
Version	0.265	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08862: mtchxl6k: Starting Trivia Whiz or Power Quiz causes emulated game to crash
Description	After selecting any category for the quiz games, the emulated game program crashes to ROM-DOS, which re-runs the script to copy the game binaries and start the game again.
Steps To Reproduce	1. Start the system (it's easiest to use "mame mtchxl6k -window -nomouse -nolightgun" so you can use your mouse or touchscreen to play) 2. Wait for the system to boot and the game to reach the menu 3. Touch a category containing the Trivia Whiz or Power Quiz game (Erotic, Quiz & Word, or New Games) 4. Touch Trivia Whiz or Power Quiz 5. Insert a coin 6. Touch the one player start button (silhouette of a single person, on the lower right) 7. Wait for the game to load 8. For Power Quiz, touch the Start button (skip this step for Trivia Whiz) 9. Touch any category
Additional Information
Github Commit

Flags
Regression Version	0.186 (Added)
Affected Sets / Systems	mtchxl6k

Attached Files

No.22100 Robbbert Senior Tester May 10, 2024, 23:48	I had to use -mouse , otherwise the mouse was ignored entirely. Is a specific mouseprovider needed? Using the keys to move the crosshairs is far too slow to be usable.
No.22101 cuavas Administrator May 11, 2024, 14:27	Full mouse integration requires external artwork and updated layout plugin for 0.265, but it’s included in current master. Sorry, I forgot to mention that. The crash happens as far back as when mtchxl6k was first added in 0.186, but the quiz games work in mtchxl6ko. Maybe an issue with protection? Or possibly a bad dump?