nmi_on_timing test info

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Zepper
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nmi_on_timing test info

Post by Zepper »

Someone asked a long time ago. In order to get a PASSED in such test, looks like the NMI shouldn't be triggered 1 PPU clock before clearing the VBlank flag, or after 6819 cycles after being set. I could confirm (and rebuild my code) to verify such condition.
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