include vdmad.inc mov esi, OFFSET32 DMA_Region mov ecx, Size VxDcall VDMAD_Unlock_DMA_Region jz ErrorHandler
Unlocks the DMA region previously locked to a channel. Uses flags
DMA_Region
Linear address of the actual DMA region.
Size
Size in bytes of the DMA region.
This service is called after a DMA transfer is complete and the channel has been masked, preventing the controller from attempting any further transfers to the programmed address.