initial values    7    2    e
MDR 1  NR=1     (00000001) [ 8]magic=0x1 (1)
MDR 4  NR=59    (0000003b) [ 3]magic=0x0 (0)
MDR 5  NR=68    (00000044) [ 9]magic=0x1c (28)
MDR 6  NR=26    (0000001a) [ 4]magic=0x4 (4)
MDR 7  NR=1858  (00000742) [ 6]magic=0x3 (3)
MDR 8  NR=1     (00000001) [ 6]magic=0x40a (1034)
MDR 9  NR=8     (00000008) [ 3]magic=0x0 (0)
MDR 10           magic=0x0 (0)
MDR 11 NR=850   (00000352) [10]magic=0x13 (19)
MDR 12 NR=1     (00000001) [ 6]magic=0x40a (1034)
MDR 13 NR=4     (00000004) [ 7]magic=0x0 (0)
MDR 14 NR=4     (00000004) [ 5]magic=0x0 (0)
MDR 15           magic=0x0 (0)