PBR,PC+1        | Internal Operation    |    R     |
    |           3   |  PBR,PC+1        | Internal Operation    |    R     |
    |           4   |  0,S+1           | NEW PCL               |    R     |
    |           5   |  0,S+2           | NEW PCH               |    R     |
    |           6   |  0,S+3           | NEW PBR               |    R     |
    |           1   |  NEWPBR,PC       | New Op Code           |    R     |
    +---------------+------------------+-----------------------+----------+

  