DATAW1 DW 97F4H
  COUNT2 DB ?
  ...
  SUB AL,AL 
  MOV DL,16 
  MOV BX,DATAW1 
AGAIN: ROL BX,1 
  JNC NEXT 
  ADD AL,1 
  DAA 
NEXT: DEC DL 
  JNZ AGAIN 
  MOV COUNT2,AL