cpu.py 文件源码

def _branch_always(self, i):
        """Emulate the BRA and BRL instructions.

        Args:
            i: The instruction.

        Returns:
            The target of the branch.
        """
        if i.address_mode == Mode.RELATIVE:
            self.pc += c_int8(i.operand).value
        elif i.address_mode == Mode.RELATIVE_LONG:
            self.pc += c_int16(i.operand).value
        return self.pc