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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08316 Gameplay Major Always May 16, 2022, 23:11 May 18, 2022, 12:20
Tester Robbbert View Status Public Platform MAME (Self-compiled)
Assigned To Robbbert Resolution Fixed OS Windows 10/11 (64-bit)
Status [?] Resolved Driver wmg.cpp
Version 0.243 Fixed in Version 0.244 Build 64-bit
Fixed in Git Commit ffdc90a Github Pull Request #
Summary 08316: wmg: when a game is chosen from the menu, it has a black screen or resets
Description You should be able to press 1 to choose a game, and 2 to play it.

Currently, when 2 is pressed, the rug shows then it has a black screen or resets.

(Defender is the only game that works)
Steps To Reproduce As above
Additional Information Tafoid kindly tracked this down to one (or both) of these commits by MooglyGuy

https://github.com/mamedev/mame/commit/06ed986b2ca70dfd9c2a3a2abde8b14513799044

https://github.com/mamedev/mame/commit/5158e9d91617bd96883bc74603d1059e3c757ee8
Github Commit
Flags
Regression Version 0.218
Affected Sets / Systems wmg
Attached Files
 
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1
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No.20203
Robbbert
Developer
May 18, 2022, 12:20
The blitter was trying to write to the wmg_banked_map address space, instead of the IO_PROGRAM address space.

The same code is used by defender, but it doesn't use the blitter, so the defect wasn't noticed.