code: def instruction_OR(self, opcode, m, register):
          
          a = register.value
          r = a | m
          register.set(r)
          self.clear_NZV()
          self.update_NZ_8(r)
docs: Performs an inclusive OR operation between the contents of accumulator A
          or B and the contents of memory location M and the result is stored in
          accumulator A or B.
  
          source code forms: ORA P; ORB P
  
          CC bits "HNZVC": -aa0-