08292: ALL: Running a NeoGeo game, causes MAME to display false warning in other games afterwards

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08292	Misc.	Minor	Always	Apr 14, 2022, 15:54	Dec 20, 2022, 01:46

Tester	Iaspis	View Status	Public	Platform	MAME (Official Binary)
Assigned To	AJR	Resolution	Fixed	OS	Windows 10/11 (64-bit)
Status [?]	Resolved			Driver	neogeo/neogeo.cpp
Version	0.242	Fixed in Version	0.251	Build	64-bit
		Fixed in Git Commit	aee2e13	Github Pull Request #

Summary	08292: ALL: Running a NeoGeo game, causes MAME to display false warning in other games afterwards
Description	If you run a NeoGeo game and exit, it causes MAME to display the "One or more ROMs/CHDs are incorrect. The machine may not run correctly" warning in every game afterwards, regardless of driver. The warning is gone again if you completely restart MAME.
Steps To Reproduce	1. Run a Neo Geo game. 2. Exit. 3. Run any other game.
Additional Information
Github Commit

Flags
Regression Version	0.220
Affected Sets / Systems	ALL

Attached Files

No.20055 Cow Tester Apr 14, 2022, 21:35	Confirmed
No.20056 Iaspis Tester Apr 15, 2022, 09:11	added regression version (0.220)
No.20156 AJR Developer May 1, 2022, 18:30	This happens because Neo Geo has BIOSes, which results in the UI prompting the user to select one and then setting the -bios option but never removing it. The ROM loader then detects any -bios setting as inappropriate for a system without BIOSes and issues a warning based on that.