code: def instruction_BLS(self, opcode, ea):
          
  #         if (self.C|self.Z) == 0:
          if self.C == 1 or self.Z == 1:
  #            log.info("$%x BLS branch to $%x, because C|Z==1 \t| %s" % (
  #                self.program_counter, ea, self.cfg.mem_info.get_shortest(ea)
  #            ))
              self.program_counter.set(ea)
docs: Causes a branch if the previous operation caused either a carry or a
          zero result. When used after a subtract or compare operation on unsigned
          binary values, this instruction will branch if the register was lower
          than or the same as the memory register.
  
          Generally not useful after INC/DEC, LD/ST, and TST/CLR/COM instructions.
  
          source code forms: BLS dd; LBLS DDDD
  
          CC bits "HNZVC": -----