Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06740 Sound Major Random 21 days ago 21 days ago
Tester Kale View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows Vista/7/8 (64-bit)
Status [?] Confirmed Driver dec0.cpp
Version 0.191 Fixed in Version Build 64-bit
Summary 06740: slyspy, bouldash: Sound randomly speeds up and eventually dies
Description In both these games sound have issues on certain conditions (same sound HW)
In Sly Spy, between stage 7 and 8 transitions sound starts to oddly speed up, and might eventually lock up completely with a stuck tone.
In Boulder Dash this can occur between stages 2-3 and 2-4
Steps To Reproduce Play Sly Spy up to stage 8 or Boulder Dash up to 2-4
Additional Information Regression version around 0.106 and 0.121, where HuC6280 sound CPU has been downclocked from 3 to 2 MHz.
Also provided inps:
For Sly Spy WolfMAME 0.190 is used on secretagj set.
For Boulder Dash WolfMAME 0.191 is used on bouldashj set, I've continued on 2-4 just to make the bug to occur.
Flags
Regression Version
Affected Sets / Systems slyspy, bouldash
Attached Files
zip file icon bouldashj_soundbug_wolf0191.zip (125,681 bytes) 21 days ago Uploaded by Kale
zip file icon secretagj_soundbug_wolf190.zip (438,606 bytes) 21 days ago Uploaded by Kale
Relationships
related to 00389Confirmed cbuster: The tempo of the music played by one of the OKI6295's (#1 I think) speeds up when the flamethrower is used 
Notes
2
User avatar
No.14361
Tafoid
Administrator
21 days ago
Reminds me of Crude Buster where certain sound effects caused the sound to speed up and then go back slow 00389.
Might be related somehow?
User avatar
No.14366
Kale
Developer
21 days ago
Good catch, both shares same CPUs and an IRQ tied to a Yamaha sound chip.
There must be something in the CPU execution that makes it to behave strangely ...