164891976           0 of            1 not allocated
 ----------------------
 Buffer 164891976 in IDATAP
          1        order
          1        inc
  271550400        blksize
          8        wordsize
  164893016        filler
          0        reader
         -1        index
          0        maxindex
          1        VM
          1        VMnreal
          0        VMoffset
  164892080        VMlist
     I         VMlist
     0    0
     I  reads   index    datap
     0    0        -1              0
 BufferList (    1:********)      164891976
N fillspread Bp
    1         1      164897520
 filler
      164893016 realtodouble0
 readers
123