Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08744 Crash/Freeze Critical (emulator) Always Aug 10, 2023, 20:13 Aug 17, 2023, 16:40
Tester ICEknight View Status Public Platform MAME (Official Binary)
Assigned To Resolution Open OS Windows 10/11 (64-bit)
Status [?] Confirmed Driver
Version 0.257 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08744: gx4000 [plotting]: MAME freezes before the game starts
Description After the initial Credits screen, press a button and MAME will freeze.
Steps To Reproduce -Start emulation, the credits screen will appear
-Press Button 1
Additional Information
Github Commit
Regression Version 0.240
Affected Sets / Systems gx4000 [plotting]
Attached Files
There are no relationship linked to this issue.
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Senior Tester
Aug 10, 2023, 22:18
It seems a little more serious than 'crash' as it locks up MAME entirely, requiring the process to be killed.
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Aug 11, 2023, 08:02
Looks like a timer set to lower PC2 on the 8255 is getting recursively called.
Removing the timer adjust in amstrad_ppi_portb_r() fixes Plotting, although I haven't yet tested other games yet.
Regression version is 0.240, likely the strobe fix to 8255.
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Senior Tester
Aug 15, 2023, 08:43
I'm not getting a crash, instead it freezes (not responding), and consumes one cpu at high power. Clicking X twice closes it.