(self, mode)
I/O for ROM file xxx.s1
I/O for ROM file xxx.s1
I / O for ROM file xxx . s1
def open_rom(self, mode):
        """I/O for ROM file xxx.s1"""
        self.fd1 = open(self.in1 if mode == 'rb' else self.out1, mode)
def open_rom ( self , mode ) : self . fd1 = open ( self . in1 if mode == 'rb' else self . out1 , mode )