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ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
08178 Graphics Minor Always 5 days ago 5 days ago
Tester Robbbert View Status Public Platform MAME (Self-compiled)
Assigned To Resolution Bugs That Aren't Bugs OS Windows 10/11 (64-bit)
Status [?] Resolved Driver slapfght.cpp
Version 0.239 Fixed in Version Build 64-bit
Fixed in Git Commit Github Pull Request #
Summary 08178: slapfighb2: Initial Slap Fight screen has corrupted graphics
Description Initial Slap Fight screen has corrupted graphics
Steps To Reproduce Start game, when the ENGLAND screen goes away you'll see the corrupt graphics in the top half of the screen.

A bunch of white zeroes with some yellow flashing things in the centre.
Additional Information
Github Commit
Flags
Regression Version
Affected Sets / Systems slapfighb2
Attached Files
 
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Notes
3
User avatar
No.19673
Haze
Senior Tester
5 days ago
edited on: 5 days ago
This is expected. The protection device supplies the title screen on the original. Some bootleg sets have that data in ROM instead, here they just didn't bother.

The code does actually read from an area where the logo could be found, and slapfighb3 even contains a ROM there, but it's confirmed there were PCBs without that ROM populated (and without any position for it) This slapfighb2 set is most likely a bootleg of a bootleg.

On real hardware, without the ROM there, the graphics for the title will either pull low or high depending on the PCB.

IOW it could be 'fixed' by copying the ROM from slapfighb3, but since slapfighb2 is confirmed not to have it, that would be a hack, this set doesn't have a valid logo on the PCB.
User avatar
No.19678
Osso
Developer
5 days ago
Setting as BTANB as per Haze's comment
User avatar
No.19680
Robbbert
Developer
5 days ago
Thanks for the info. I'll pass it on to the person who asked about this issue.