Metadatacopyunion _EXT_IOMMU_QC_SID_IMPL_DEFINED_REGISTERS { struct { unsigned short Impl0;/* 0x0 2 */ unsigned short Impl1;/* 0x2 2 */ unsigned short Impl2;/* 0x4 2 */ };/* 0x0 6 */ unsigned short AsUINT16[3];/* 0x0 6 */};