Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
07314 Crash/Freeze Major Always May 2, 2019, 07:24 May 6, 2019, 16:24
Tester Osso View Status Public Platform MAME (Official Binary)
Assigned To Osso Resolution Fixed OS Windows 10 (64-bit)
Status [?] Resolved Driver homedata.cpp
Version 0.209 Fixed in Version 0.210 Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 07314: mjikaga: Game boots and immediately gets stuck at a white screen
Description Since 0.206 the game doesn't work anymore, getting stuck at a white screen.
Steps To Reproduce Just load the game.
Additional Information In the 0.206 dev cycle there was a pretty big update to the driver which may be the regression, though I haven't verified it yet:
Github Commit
Regression Version 0.206
Affected Sets / Systems mjikaga
Attached Files
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May 2, 2019, 09:17
Can confirm day of regression lines up with linked commit above (January 18, 2019)
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May 2, 2019, 10:13
It appears using the latches instead of the old way is causing data not to be read in time. Reverting it fixes this, but it's obviously not the way to go.
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May 6, 2019, 12:49
edited on: May 6, 2019, 12:53
It can also be worked-around by setting the maincpu and the audiocpu to perfect quantum, but it causes a 50% performance loss against 0.205.

EDIT: config.m_minimum_quantum = attotime::from_hz(60000); seems to do the trick and not to cost too much in performance. I guess I'll commit this later.