The patent isn't clear on how this all works exactly but games like Alone in the Dark and Lemmings clearly had issue with audio buffers replaying in a loop. The docs suggest that the DMA start address being set to zero is used to stop the transfer if using the "next" address. However, it looks that disabling the DMA channel is also needed.
There are still some DMA issues as numerous games have pops and crackles at times but this will fix a number of games.
The patent isn't clear on how this all works exactly but games like Alone in the Dark and Lemmings clearly had issue with audio buffers replaying in a loop. The docs suggest that the DMA start address being set to zero is used to stop the transfer if using the "next" address. However, it looks that disabling the DMA channel is also needed.
There are still some DMA issues as numerous games have pops and crackles at times but this will fix a number of games.