code: def _compute_register_list(self, operand):
          
  
          ret = []
          for reg_range in operand.reg_list:
              if len(reg_range) == 1:
                  ret.append(ReilRegisterOperand(reg_range[0].name, reg_range[0].size))
              else:
                  reg_num = int(reg_range[0].name[1:])    # Assuming the register is named with one letter + number
                  reg_end = int(reg_range[1].name[1:])
                  if reg_num > reg_end:
                      raise NotImplementedError("Instruction Not Implemented: Invalid register range.")
                  while reg_num <= reg_end:
                      ret.append(ReilRegisterOperand(reg_range[0].name[0] + str(reg_num), reg_range[0].size))
                      reg_num = reg_num + 1
  
          return ret
docs: Return operand register list.