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LODSD             Load String Doubleword (386)       Flags: O D I T S Z A P C

LODSD

           Logic:        EAX . DWORD PTR (DS:SI)
                         if DF = 0
                             SI . SI + 4
                         else
                             SI . SI - 4

     LODSD loads a doubleword from the memory location at DS:SI into the EAX
     register. SI is then incremented if the direction flag is cleared or
     decremented if it is set.

  --------------------------------------------------------------------------
   Operands                   Clocks   Transfers  Bytes  Example
   LODSD                      5 (386)      4        1    LODSD
  --------------------------------------------------------------------------

        Note:          This instruction can be used with a REP prefix.
                       Load CX with the number of times to repeat the
                       instruction. You can only use LODSD on the 80386.