The /MACHINE_CODE qualifier controls whether the listing file  contains  a
   list of compiler generated machine code.

   The format of the /MACHINE_CODE qualifier is as follows:

      /[NO]MACHINE_CODE

   The /MACHINE_CODE qualifier has no effect  unless  you  also  specify  the
   /LISTING  qualifier.   If you specify the /MACHINE_CODE qualifier with the
   /OPTIMIZE qualifier, the machine code listing may not reflect  the  actual
   code executed for a given statement nor the order of execution.

   The /NOMACHINE_CODE qualifier suppresses compiler generated  machine  code
   in the listing file.

   The default is /NOMACHINE_CODE.