01449: mk4, mk4a: Administrative buttons cause MK4 (Rev 3.0) to Lock-Up

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
01449	DIP/Input	Major	Always	Mar 1, 2008, 07:19	Jul 30, 2017, 18:04

Tester	Jdurg	View Status	Public	Platform	MAMEUI
Assigned To	tedgreen	Resolution	Fixed	OS	Windows XP/Vista 64-bit
Status [?]	Resolved			Driver	midway/midzeus.cpp
Version	0.123u3	Fixed in Version		Build	C2D
		Fixed in Git Commit		Github Pull Request #

Summary	01449: mk4, mk4a: Administrative buttons cause MK4 (Rev 3.0) to Lock-Up
Description	When running MK4 (Only tested with Revision 3.0), if you press any administrative button (Test Switch, Volume Up, Volume Down, etc). the game locks up completely. It will still respond to the Reset (F3) button press, however. If F11 is pressed, one will see that the % jumps up to 100% as if all emulation has ceased. Tafoid: Replicated with mk4a. Regression appears to be 0.122u2
Steps To Reproduce	Load MK4 Allow Game to Boot Up Press F2, or -, or = key on keyboard. Game will lock up.
Additional Information	Bug was also seen in 32-bit version of MAME/MAMEUI and 64-Bit Standard Version of MAME.
Github Commit

Flags
Regression Version	0.122u2
Affected Sets / Systems	mk4, mk4a

Attached Files

No.00338 Jdurg Tester Mar 23, 2008, 05:35	Not sure if this is related, but I decided to let attract mode run for a while, and after approximately 4 or 5 attract mode battles, the game locked up completely taking MAME with it. No key presses would register and MAME had to be forcefully closed. The only difference in my setup from the prior bug report is that I'm now running Vista Service Pack 1.
No.14033 tedgreen Developer Jul 30, 2017, 18:04	Error no longer occurs in latest version.