01956: mk2, umk3: Sound screws up when loading a save state

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
01956	Sound	Minor	Have not tried	Jun 30, 2008, 01:33	Nov 28, 2019, 10:35

Tester	ChrisB	View Status	Public	Platform
Assigned To		Resolution	Fixed	OS
Status [?]	Resolved			Driver	midway/midtunit.cpp
Version	0.125	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	01956: mk2, umk3: Sound screws up when loading a save state
Description	Whenever I save in the middle of a fight and reload, the sound messes up--sometimes the sound effects lag for a bit, while other times I would hear this crackling humming noise and the sound effects would "echo".
Steps To Reproduce
Additional Information	mk3 doesn't have this problem.
Github Commit

Flags
Regression Version
Affected Sets / Systems	mk2, umk3

Attached Files

No.01446 Tafoid Administrator Jun 30, 2008, 02:15 edited on: Jun 30, 2008, 02:29	Sorry to play the spoiler but there is nothing we can do here. In version 0.113 of MAME - there was NO official support for Save States for the drivers which mk2, mk3, umk3 are part of. You should be seeing a pop-up message when saving which states this. Also, potential bug reports before they are posted should be confirmed on the most recent release MAMEDEV.ORG release (0.125) - preferably the latest U release (0.125u8) of the current MAMEDEV sources. In general, sound echos and audio delay are a symptom of a computer which does not have enough CPU to run an emulation. Please refer to the documents available here (links at the top of the page) for Rules and Guidelines, FAQ and Legend and attributes to learn more about the testing/reporting process. EDIT: I've left open for some current version testing on a decent spec machine. For me, I don't have enough juice to test this title properly on 0.125u8. There might be validity to this report.
No.01450 ChrisB Tester Jun 30, 2008, 12:30 edited on: Jun 30, 2008, 14:58	I just went back and tested MK2 on version 0.125 (where save states are supported for the game) and I still got this bug. I used to play the game a lot on version 0.106 (back when it didn't support save states) and I never saw (or rather, hear) this bug occuring when I did save and reload. Regarding computers, I own a Dell DXG061 with dual x86 Family 6 Model 15 Stepping 6 GenuineIntel Note: 02128 Mhz processors and has a total virtual memory of 2.00 GB, so I don't believe that it is a problem of my computer having enough CPU.
No.01455 Tafoid Administrator Jun 30, 2008, 15:43	Fujix was able to confirm on his machine using first my save state I made of U8 and trying one of his own he made. There was a noticeable sound delay (at least 1 second). We can confirm the sound delay at least.
No.17219 MetalGod Senior Tester Nov 28, 2019, 10:33	The reported bug in mame 0.125:
No.17220 MetalGod Senior Tester Nov 28, 2019, 10:34	I can confirm this isn't happening anymore.