06445: mk: [possible] In attract mode at the certain point, music and fx are off

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06445	Sound	Minor	Always	Dec 4, 2016, 14:07	Dec 6, 2016, 23:58

Tester	StHiryu	View Status	Public	Platform	MAME (Unofficial Binary)
Assigned To		Resolution	Invalid report	OS	Windows Vista/7/8 (64-bit)
Status [?]	Closed			Driver	midway/midtunit.cpp
Version	0.179	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06445: mk: [possible] In attract mode at the certain point, music and fx are off
Description	Launch mk and watch the attract mode, that is a loop of the following sequences: Mortal kombat title, score screen, character bio, some demo fights After the 4º loop with the scorpion's bio, the sound and fx are off. I would like if someone can check it with an original pcb. If you insert a credit, the fx works and the music plays in the character selection screen,
Steps To Reproduce	Wait until the subzero bio is displayed in attract mode (5ºloop).
Additional Information	Provide a save state for the mame 179 at the beggining of the 5º loop.
Github Commit

Flags	Possible
Regression Version
Affected Sets / Systems	mk

Attached Files	q.zip (1,676,055 bytes) Dec 4, 2016, 14:07 Uploaded by StHiryu

No.13459 Tafoid Administrator Dec 4, 2016, 18:19 edited on: Dec 4, 2016, 18:20	Demonstration sound for many games isn't on 100% of the time. Some alternate between demonstration sounds, demonstration silence. Atari games were known to only play demonstration sounds once every 4 or 5 loops (Indiana Jones: Temple of Doom [indytemp], for example). Mortal Kombat 2 [mk2] does a similar thing.. muting sound after a few cycles of the title screen and it has completely different sound hardware. I honestly don't believe that something like this is even worth investigating.
No.13461 StHiryu Tester Dec 5, 2016, 00:45	After what you said and some time investigating, I think you're right, is the normal behaviour of the game. You can close the report unless someone would like to compare it with a real pcb...
No.13462 Augusto Tester Dec 5, 2016, 00:49	I remember perfectly about it. After a time attract sound is disabled and will be enabled after some cycles. Tafoid is correct. Several arcades work of same mode. Emulation is correct too ;-)