Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07958 Sound Minor Sometimes Apr 29, 2021, 00:34 Apr 29, 2021, 19:14
Tester -Misc Reporters- View Status Public Platform MAME (Self-compiled)
Assigned To Resolution Open OS
Status [?] Confirmed Driver taitogn.cpp
Version 0.230 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 07958: kollon, kollonc: Crackling/Overdriving of audio
Description As the intro music plays and during game after start, you can notice the audio seems overdriven to the point of some crackling/clipping is heard.
Steps To Reproduce
Additional Information Reported by Haze via email.

"Thanks for stream David. I checked out Kollon (puzzle game) and
experienced the same audio glitches with MAME versions 0.229 and
0.230. I then stepped back to MAME 0.223 and the audio glitches
disappeared so regression occurred somewhere between 0.223 and 0.229."
Github Commit
Regression Version 0.225
Affected Sets / Systems kollon, kollonc
Attached Files
There are no relationship linked to this issue.
User avatar
Apr 29, 2021, 00:36
Tracing issue to 0.224/0.225, very likely this commit (On September 21, 2020)
User avatar
Apr 29, 2021, 15:34
update: 231 demoted to "not_working" status
User avatar
Senior Tester
Apr 29, 2021, 18:12
edited on: Apr 29, 2021, 18:13
only the parent set was demoted (because it no longer boots)

actually I'm kinda surprised by the demotion, as not booting is a regression, and we don't usually demote in terms of fairly recent regressions, but I'm not going to disagree with it too much

none of that is related to the sound issue anyway, which is a separate issue Aaron has indicated he'll investigate
User avatar
Senior Tester
Apr 29, 2021, 19:14
ideally Kollonc will also be switched to use a pre-flashed / updated BIOS, because forcing the update procedure is a pain that makes most people think that set is also not-working, when it's the set that does boot.