Extended_DDS_Struc

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.