include vdmad.inc Extended_DDS_Struc STRUC dd ? ; DDS_size see DMA_Descriptor_Struc dd ? ; DDS_linear see DMA_Descriptor_Struc dw ? ; DDS_seg see DMA_Descriptor_Struc dw ? ; reserved DDS_avail dw ? DDS_used dw ? Extended_DDS_Struc ENDS
Describes the DMA region.
DDS_avail
The number of physical regions/page table entries that immediately follows the Extended_DDS_Struc structure.
DDS_used
The number of table entries filled in with physical regions information.