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James Pond - Codename Robocod black screen #539

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CromlechDE opened this issue Mar 15, 2017 · 3 comments
Closed

James Pond - Codename Robocod black screen #539

CromlechDE opened this issue Mar 15, 2017 · 3 comments
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platform:GBA Game Boy Advance-related issues severity:minor bug Issues that only have a minor impact on the library
Milestone
mGBA 1.0.0

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@CromlechDE
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After selecting the language the screen goes black and just music playing.

Retroarch 1.5.0
Win 7 64bit
@endrift
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endrift commented Apr 4, 2017

Can confirm.

@endrift endrift added platform:GBA Game Boy Advance-related issues severity:minor bug Issues that only have a minor impact on the library labels Apr 4, 2017
@endrift endrift added this to the 0.7.0 milestone Apr 4, 2017
@endrift
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endrift commented Sep 12, 2017

Gets stuck at 0800CB48.

@endrift
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endrift commented Sep 14, 2017

The loop condition at that address can only pass if the interrupt fires after the value of scanline 160 is read from the VCOUNT register...which isn't possible in mGBA and is only possible in exceedingly narrow cases on hardware. Easy fix...to the game. Not sure how to fix the emulator. grumbles

@endrift endrift modified the milestones: mGBA 0.7.0, mGBA 1.0.0 Sep 14, 2017
@endrift endrift mentioned this issue Oct 7, 2018
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@endrift endrift closed this as completed in f6a4a13 Oct 7, 2018
@andymcca andymcca mentioned this issue Apr 21, 2023
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platform:GBA Game Boy Advance-related issues severity:minor bug Issues that only have a minor impact on the library
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Milestone
mGBA 1.0.0
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@endrift @CromlechDE