SGD

#include <sgd.h>

typedef struct _SGD {
    ULONG SG_buff_ptr    // address of data buffer; see below
    ULONG SG_buff_size   // number of bytes to transfer
} SGD, *PSGD;

Contains scatter/gather descriptors.

SG_buff_ptr

Address of buffer that contains or receives transferred data. May be either a 32 bit physical or a 32 bit flat (linear) address, depending on the demand bits set for the associated device as specified in the VRP structure.

See also IOR, VRP