code: def _neg16(ins):
      ''' Negates top of the stack (16 bits in HL)
      '''
      output = _16bit_oper(ins.quad[2])
      output.append('call __NEGHL')
      output.append('push hl')
      REQUIRES.add('neg16.asm')
      return outpuf _neg16(ins):
      ''' Negates top of the stack (16 bits in HL)
      '''
      output = _16bit_oper(ins.quad[2])
      output.append('call __NEGHL')
      output.append('push hl')
      REQUIRES.add('neg16.asm')
      return output
docs: Negates top of the stack (16 bits in HL)