09409: xmen6p, xmen6pu: Some sequences are sped up

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09409	Timing	Minor	Always	Mar 13, 2026, 17:02	Mar 13, 2026, 22:20

Tester	danylopez123	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS	Windows (x64)
Status [?]	Resolved			Driver	konami/xmen.cpp
Version	0.286	Fixed in Version	0.287	Build	x64
		Fixed in Git Commit	27134d7	Github Pull Request #

Summary	09409: xmen6p, xmen6pu: Some sequences are sped up
Description	This doesn't seem to happen in any of the 4/2 player version which is just 1 screen but in the wide 6 player version, there are some sequences that are sped up, I was able to find 3 of them and recorded a video of it. Sorry for the weird Camtasia 30 FPS recording as some frames will be weird to watch but I also marked a ">>" at the top right corner when the game speeds up those sequences.
Steps To Reproduce	Parts where you can see the sped up sequences: 1. During the opening where Magneto says "X-men.." 2. During the intro where the screen goes into the Signal lost, as a bonus, a large electric shock sprite hangs there for a moment. 3. Beating the boss from Stage 3
Additional Information
Github Commit

Flags	Regression
Regression Version	0.279
Affected Sets / Systems	xmen6p, xmen6pu

Attached Files

No.24260 hap Developer Mar 13, 2026, 22:19 edited on: Mar 14, 2026, 16:05	Regression by me: https://github.com/mamedev/mame/commit/e66115b7a8fe2c685ca4bd7b22fa1cbac33a91f1 It worked before, because of 0 vblank duration, this: set_vblank_time(ATTOSECONDS_IN_USEC(0));