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Viewing Issue Advanced Details
ID | Category [?] | Severity [?] | Reproducibility | Date Submitted | Last Update |
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06494 | Graphics | Minor | Always | Feb 4, 2017, 15:24 | Apr 7, 2023, 16:19 |
Tester | Yonah | View Status | Public | Platform | MAME (Official Binary) |
Assigned To | Resolution | Open | OS | Windows Vista/7/8 (64-bit) | |
Status [?] | Confirmed | Driver | |||
Version | 0.182 | Fixed in Version | Build | 64-bit | |
Fixed in Git Commit | Github Pull Request # | ||||
Summary | 06494: thndrbld, thndrbld1, thndrbldd: Objects momentarily disappear | ||||
Description | At certain times during the demo and gameplay, all of the objects on screen (buildings, trees, enemies, bullets, player's helicopter) will disappear for a single frame. This can be easily observed at 35 seconds into the game's demo mode. In a 5 second span there are 4 times when all of the objects disappear for a single frame, leaving only the background. Possibly not a bug with MAME but with the original hardware. | ||||
Steps To Reproduce | |||||
Additional Information | If the SUBCPU is underclocked to 90%, the problem becomes more severe. If overclocked to 110%, the problem is resolved. | ||||
Github Commit | |||||
Flags | |||||
Regression Version | |||||
Affected Sets / Systems | thndrbld, thndrbld1, thndrbldd | ||||
Attached Files
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Relationships
There are no relationship linked to this issue. |
Notes
2
![]() No.13594
B2K24 Senior Tester
Feb 6, 2017, 05:59
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I'll confirm this for now as I see the exact same thing as your snap shot when creating an AVI with MAME and cycling through it frame by frame with MPC-HC. |
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![]() No.21289
Cow Tester
Apr 7, 2023, 16:19
edited on: Apr 7, 2023, 16:21 |
Could possibly be that the SUBCPU's clock speed is wrong in MAME. Its more noticable in the Upright set than in the Cockpit/Deluxe revision. If anyone's got a good capture of a PCB, it would be greatly appreciated. |