code: def BX(self, params):
          
          Rj = self.get_one_parameter(self.ONE_PARAMETER, params)
  
          self.check_arguments(LR_or_general_purpose_registers=(Rj,))
  
          def BX_func():
              self.register['PC'] = self.register[Rj]
  
          return BX_func
docs: BX Rj
  
          Jump to the address in the Link Register