code: def ascii_listing2program_dump(self, basic_program_ascii, program_start=None):
          
          if program_start is None:
              program_start = self.DEFAULT_PROGRAM_START
  
          basic_lines = self.ascii_listing2basic_lines(basic_program_ascii, program_start)
  
          program_dump=self.listing.basic_lines2program_dump(basic_lines, program_start)
          assert isinstance(program_dump, bytearray), (
              "is type: %s and not bytearray: %s" % (type(program_dump), repr(program_dump))
          )
          return program_dump
docs: convert a ASCII BASIC program listing into tokens.
          This tokens list can be used to insert it into the
          Emulator RAM.