Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
00722 Graphics Minor Always Feb 3, 2008, 07:50 Mar 18, 2008, 09:27
Tester -MAME Source- View Status Public Platform MAME (Self-compiled)
Assigned To Resolution Bugs That Aren't Bugs OS
Status [?] Resolved Driver
Version N/A Fixed in Version Build Debug
Fixed in Git Commit Github Pull Request #
Summary 00722: ninjakun: Garbage is shown behind the GAME OVER text
Description When the game ends, GAME OVER is written at the center of the screen, and garbage characters are displayed in the background behind it.
Steps To Reproduce
Additional Information The game attempts to display character 0x20 in the background tilemap, suggesting that it wants to draw a space. However, character 0x20 is not a space in the bg character set.

Added by Nicolasa
Github Commit
Flags Noted in Source
Regression Version
Affected Sets / Systems ninjakun
Attached Files
png file icon 0004.png (3,151 bytes) Feb 14, 2008, 15:14
png file icon 0001.png (2,624 bytes) Mar 10, 2008, 17:48
png file icon ninjakun_0123u5.png (3,055 bytes) Mar 17, 2008, 19:32
There are no relationship linked to this issue.
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Feb 9, 2008, 13:00
Can't repro in 0.123. Already fixed?
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Mar 10, 2008, 13:09
For me it happens identically in 0.123u4. Can you post a screenshot?
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Mar 10, 2008, 15:56
It reproduces as screenshot shows here in 0.123u4.
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Mar 10, 2008, 17:40
edited on: Mar 10, 2008, 17:48
it's nova2001.c driver not ninjakid.c driver
in the second stage the bug is not present
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Mar 17, 2008, 19:46
I found why.
I went into the second stage. It seems that once the background is displayed correctly, it works normally also in the first stage.
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Mar 18, 2008, 09:27
This appears to be a bug in the game code.
The background if the GAME OVER box is drawn using color 15. The corresponding palette entries are cleared to black between levels while rendering the sky rainbow effect. However, they are not cleared before level 1, so whatever was left there will be shown in the GAME OVER box. This can be the bootup RAM test garbage, if playing right after boot, or the geisha image shown during attract mode.
So ending the game on level 1 will always show garbage in the GAME OVER box, unless the game is started immediately after another one which finished on a level greater than 1, without letting the attract mode loop.