headersMetadatacopyenum _DMA_SPEED { Compatible = 0,/* 0x0 */ TypeA = 1,/* 0x1 */ TypeB = 2,/* 0x2 */ TypeC = 3,/* 0x3 */ MaximumDmaSpeed = 4,/* 0x4 */};/* computed from the NT 4.0 DDK headers */