Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06871 Gameplay Major Always Feb 9, 2018, 09:03 Oct 12, 2020, 07:27
Tester launcherEXE View Status Public Platform MAME (Official Binary)
Assigned To Resolution Fixed OS Windows 10 (64-bit)
Status [?] Resolved Driver
Version 0.194 Fixed in Version 0.218 Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 06871: all games in twinkle.cpp: Offsync in all songs in beatmania IIDX
Description Notes in songs start to drifting away and in the middle of song they are completely offbeat.
Steps To Reproduce Select and play any song
Additional Information Possibly, this occurs because IIDX uses refresh rate 59.94 Hz (as seen here
) for syncing notes, while in MAME refresh rate is 60.00 Hz.
Github Commit
Regression Version
Affected Sets / Systems all games in twinkle.cpp
Attached Files
There are no relationship linked to this issue.
User avatar
Feb 13, 2018, 05:57
Are you able to show video proof of the issues that you're describing?

Although I'm pretty terrible at playing these types of games, I'm not seeing the syncing issues here on my end.
User avatar
Senior Tester
Feb 17, 2018, 11:00
It's been widely reported.

I think they should be demoted to not working to be honest, the sync issue, along with the general instability others have reported means that they don't really work as intended at all, and the promotion to working state was probably premature.
User avatar
Senior Tester
Jan 5, 2020, 13:11
It seems this will be fixed in next mame release, 0.218
User avatar
Oct 12, 2020, 07:27
You can close this issue, as it was resolved.