code: def to_fixed(stype):
      
      output = []  # List of instructions
  
      if is_int_type(stype):
          output = to_word(stype)
          output.append('ex de, hl')
          output.append('ld hl, 0')  # 'Truncate' the fixed point
      elif stype == 'f':
          output.append('call __FTOF16REG')
          REQUIRES.add('ftof16reg.asm')
  
      return output
docs: Returns the instruction sequence for converting the given
      type stored in DE,HL to fixed DE,HL.