0000000000000000FFFF0000H;
              SEL ← 2:
                              MASK ← 00000000000000000000FFFF00000000H;
              SEL ← 3:
                              MASK ← 0000000000000000FFFF000000000000H;
              SEL ← 4:
                              MASK ← 000000000000FFFF0000000000000000H;
              SEL ← 5:
                              MASK ← 00000000FFFF00000000000000000000H;
              SEL ← 6:
                              MASK ← 0000FFFF00000000000000000