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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06482 Graphics Minor Always Jan 28, 2017, 16:40 Jan 11, 2019, 06:47
Tester StHiryu View Status Public Platform MAME (Unofficial Binary)
Assigned To Resolution Bugs That Aren't Bugs OS Windows Vista/7/8 (64-bit)
Status [?] Resolved Driver cps1.cpp
Version 0.182 Fixed in Version Build 64-bit
Summary 06482: mtwins: Screen flickering at the ending secuence
Description All the game runs fine, but at the ending secuence when the staff credits appears, the screen starts to flicker. Seems to be a regression since at mame 0.134 there is no flickering.
Steps To Reproduce You have to finish the game and wait for the ending credits secuence.
Additional Information Provide some videos with the issue (Sorry this time I can't provide a save state):
(At 48:45)
(At 40:45)

This is a video from mame 0.134 with no issue:
(At 35:38)
Regression Version
Affected Sets / Systems mtwins
Attached Files
zip file icon (295,073 bytes) Jan 29, 2017, 11:46 Uploaded by B2K24
mtwins save state before flickering at ending
There are no relationship linked to this issue.
User avatar
Jan 29, 2017, 11:47
I can't confirm the regression version, but the flickering does happen with current release (0.182) I've attached a save state right before the ending sequence.
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Senior Tester
Jan 29, 2017, 23:26
entirely possible it's correct, doing this on a CRT monitor would likely just make it appear at half brightness rather than flicker.

the older MAME versions didn't emulate the layer enable registers properly.
User avatar
Jan 30, 2017, 02:24
I was also thinking along the same lines as I played it and watch it a few times if it's in fact correct behavior and/or BTANB's.

It seems like just a way of glorifying the ending sequence at an attempt of making it special.
It's curious the Presented By Capcom screen experiences the behavior and then it instantly corrects itself when cycling next to the Game Over screen as if it's intentional.
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Senior Tester
Feb 14, 2017, 09:27
edited on: Feb 14, 2017, 09:28
Looking at this end sequence wiht HLSL RASTER.INI effects enabled (or with BGFX CRT GEOM that seems better) it appears quite obvious that it's an intentional effect, a sort of "flashing till your eyes will blink". I would set this as BTANB in my opinion.
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Feb 14, 2017, 21:01
So, Another BTANB to my account :)
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Senior Tester
Jan 9, 2019, 12:08
edited on: Jan 9, 2019, 12:09
Here's the ending of mega twins, played at the arcades:

BTANB then?