oam bug test fails on genuine hardware

retrio / gb-test-roms

Collection of Game Boy test roms.

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Open ariahiro64 opened 4 years ago

ariahiro64 commented 4 years ago

this was captured using a gameboy player. a gamboy player just is a gba using passthroughs for input and output

bobonis commented 4 years ago

I think that OAM bug was fixed in gba hardware, that is why you cannot reproduce the test.

taylus commented 4 years ago

@bobonis is right, per https://gbdev.gg8.se/wiki/articles/Sprite_RAM_Bug this is fixed in later models:

Game Boy Color and Advance are not affected by this bug.

It passes when I run it on my DMG + EverDrive:

oam_bug_on_dmg