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NES: after OAM_DMA pad polling is producing random right jpad presses #457

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kandowontu opened this issue Oct 12, 2024 · 0 comments

kandowontu commented Oct 12, 2024 •

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This happens on Famidash (https://rhpz.org/famidash) - the jpad will randomly read a right press where none is being produced.

This is a bug caused by improperly coded OAM_DMA handler.

https://www.nesdev.org/wiki/Controller_reading#Synchronized_OAM_Solution

https://www.nesdev.org/wiki/Controller_reading_code#DPCM_Safety_using_OAM_DMA

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