# 1.6.1 I-FORM
    |0     |6         |30|31 |
    | PO   |      LI  |AA|LK |

# 1.6.2 B-FORM
    |0     |6   |11     |16     |30|31 |
    | PO   |  BO|   BI  |   BD  |AA|LK |

# 1.6.2.1 BM-FORM
    |0     |6    |10  |15  |22  |23    |31|
    | PO   |  RS | me | sh | me |   XO |Rc|

# 1.6.2.2 BM2-FORM
    |0     |6    |11    |16    |21   |26 |27    31|
    | PO   |  RT |   RA |   RB |bm   |L  |   XO   |
    | PO   |  RT |   RA |   RB |RC   |nh |   XO   |

# 1.6.2.2 CRB-FORM
    |0     |6    |9   |11   |14   | 16  |19   |26   | 31|
    | PO   | BF  | msk|BFA  | msk | BFB | //  | XO  | / |
    | PO   | BF  | msk|BFA  | msk | BFB | TLI | XO  |TLI|

# 1.6.2.3 CW-FORM
    |0     |6   |9 |11|12   |16   |19  |22   |26   |31|
    | PO   | RA    |M |fmsk |BF   |XO  |fmap | XO     |
    | PO   | BT    |M |fmsk |BF   |XO  |fmap | XO     |
    | PO   | BF |  |M |fmsk |BF   |XO  |fmap | XO     |

# 1.6.2.3 CW2-FORM
    |0     |6   |9 |11|12   |16   |19  |22   |26   |31|
    | PO   | RT    |M |fmsk |BFA  |XO  |fmap | XO  |Rc|

# 1.6.3 SC-FORM
    |0     |6    |11    |16    |20     |27  |30 |31  |
    | PO   |  ///|   ///|   // |   LEV |  //|  1|  / |

# 1.6.4 D-FORM
    |0     |6   |9  |10 |11   |16      |31 |
    | PO   |    RT      |   RA|   D        |
    | PO   |    RT      |   RA|   SI       |
    | PO   |   RS       |   RA|   D        |
    | PO   |   RS       |   RA|   UI       |
    | PO   | BF | / | L |   RA|   SI       |
    | PO   | BF | / | L |   RA|   UI       |
    | PO   |    TO      |   RA|   SI       |
    | PO   |   FRT      |   RA|   D        |
    | PO   |   FRS      |   RA|   D        |

# 1.6.5 DS-FORM
    |0     |6      |11    |16    |30  |31 |
    | PO   |   RT  |   RA |   DS |  XO    |
    | PO   |   RS  |   RA |   DS |  XO    |
    | PO   |  RSp  |   RA |   DS |  XO    |
    | PO   |  FRTp |   RA |   DS |  XO    |
    | PO   |  FRSp |   RA |   DS |  XO    |

# 1.6.6 DQ-FORM
    |0     |6     |11    |16    |28|29 |31 |
    | PO   |  RTp |   RA |   DQ |   PT     |
    | PO   |  S   |   RA |   DQ |SX| XO    |
    | PO   |  T   |   RA |   DQ |TX| XO    |

# V3.0B 1.6.6 DX-FORM
    |0    |6   |11   |16   |26   |31
    | PO  |  RT|   d1|   d0|   XO|d2
    | PO  | FRS|   d1|   d0|   XO|d2
    | PO  | FRS|     D     |   XO|D

# 1.6.7 X-FORM
    |0     |6 |7|8|9  |10  |11|12|13  |15|16|17     |20|21    |31  |
    | PO   |       RT      |    RA       |     ///     |   XO |  / |
    | PO   |       RT      |    RA       |    RB       |   XO |  / |
    | PO   |       RT      |    RA       |    RB       |   XO |EH  |
    | PO   |       RT      |    RA       |    NB       |   XO |  / |
    | PO   |       RT      | /|SR        |     ///     |   XO |  / |
    | PO   |       RT      |     ///     |    RB       |   XO |  / |
    | PO   |       RT      |     ///     |    RB       |   XO | 1  |
    | PO   |       RT      |     ///     |     ///     |   XO |  / |
    | PO   |       RT      |    BI       |     ///     |   XO |  / |
    | PO   |       RS      |    RA       |    RB       |   XO |Rc  |
    | PO   |       RT      |    RA       |    RB       |   XO |Rc  |
    | PO   |       RS      |    RA       |    RB       |   XO | 1  |
    | PO   |       RS      |    RA       |    RB       |   XO |  / |
    | PO   |       RS      |    RA       |    NB       |   XO |  / |
    | PO   |       RS      |    RA       |    SH       |   XO |Rc  |
    | PO   |       RS      |    RA       |     ///     |   XO |Rc  |
    | PO   |       RS      |    RA       |     ///     |   XO |  / |
    | PO   |       RS      | /|SR        |     ///     |   XO |  / |
    | PO   |       RS      |     ///     |    RB       |   XO |  / |
    | PO   |       RS      |     ///     |     ///     |   XO |  / |
    | PO   |       RS      |    ///   |L1|     ///     |   XO |  / |
    | PO   |       TH      |    RA       |    RB       |   XO |  / |
    | PO   |  BF  |/  | L  |    RA       |    RB       |   XO |  / |
    | PO   |  BF  |//      |   FRA       |   FRB       |   XO |  / |
    | PO   |  BF  |//      | BFA | //    |     ///     |   XO |  / |
    | PO   |  BF  |//      |    ///   |W |    U     |/ |   XO |Rc  |
    | PO   |  BF  |//      |     ///     |     ///     |   XO |  / |
    | PO   |       TH      |    RA       |    RB       |   XO |  / |
    | PO   | /| CT         |     ///     |     ///     |   XO |  / |
    | PO   | /| CT         |    RA       |    RB       |   XO |  / |
    | PO   |  /// | L2     |    RA       |    RB       |   XO |  / |
    | PO   |  /// | L2     |     ///     |    RB       |   XO |  / |
    | PO   |  /// | L2     |     ///     |     ///     |   XO |  / |
    | PO   |  /// | L2     | /|     E    |     ///     |   XO |  / |
    | PO   |     TO        |    RA       |    RB       |   XO |  / |
    | PO   |   FRT         |    RA       |    RB       |   XO |  / |
    | PO   |   FRT         |   FRA       |   FRB       |   XO |  / |
    | PO   |  FRTp         |    RA       |    RB       |   XO |  / |
    | PO   |   FRT         |     ///     |   FRB       |   XO |Rc  |
    | PO   |   FRT         |     ///     |   FRBp      |   XO |Rc  |
    | PO   |   FRT         |     ///     |     ///     |   XO |Rc  |
    | PO   |  FRTp         |      ///    |   FRB       |   XO |Rc  |
    | PO   |  FRTp         |      ///    |   FRBp      |   XO |Rc  |
    | PO   |  FRTp         |   FRA       |   FRBp      |   XO |Rc  |
    | PO   |  FRTp         |   FRAp      |   FRBp      |   XO |Rc  |
    | PO   |  BF  |//      |   FRA       |   FRBp      |   XO |  / |
    | PO   |  BF  |//      |   FRAp      |   FRBp      |   XO |  / |
    | PO   |    FRT        |S |          | FRB         |   XO |Rc  |
    | PO   |  FRTp         |S |          | FRBp        |   XO |Rc  |
    | PO   |    FRS        |  RA         |  RB         |   XO |  / |
    | PO   |  FRSp         |  RA         |  RB         |   XO |  / |
    | PO   |     BT        |  ///        |  ///        |   XO |Rc  |
    | PO   |     BT        |   BA        | BFB //      |   XO | 1  |
    | PO   |     ///       |  RA         |  RB         |   XO |  / |
    | PO   |     ///       |  ///        |  RB         |   XO |  / |
    | PO   |     ///       |  ///        |  ///        |   XO |  / |
    | PO   |     ///       |  ///        | E|///       |   XO |  / |
    | PO   |  //|IH        |  ///        |  ///        |   XO |  / |
    | PO   | A|//          |  ///        |  ///        |   XO | 1  |
    | PO   | A|//     |R   |  ///        |  ///        |   XO | 1  |
    | PO   |     ///       |  RA         |  RB         |   XO | 1  |
    | PO   |  /// |WC      |  ///        |  ///        |   XO |  / |
    | PO   |  /// |T       |  RA         |  RB         |   XO |  / |
    | PO   |    VRT        |  RA         |  RB         |   XO |  / |
    | PO   |   VRS         |  RA         |  RB         |   XO |  / |
    | PO   |    MO         |  ///        |  ///        |   XO |  / |
    | PO   |       RT      | /// |L3     |     ///     |   XO | /  |
    | PO   |   FRT         |   FRA       |   FRB       |   XO | Rc |
    | PO   |   FRT         |   FRA       |    RB       |   XO | Rc |
    | PO   |   RT          |  ///        |   FRB       |   XO | Rc |
    | PO   |   FRT         |  ///        |    RB       |   XO | Rc |
    | PO   |   FRT         | IT  | ///   |    RB       |   XO | Rc |

# 1.6.7.1 DCT-FORM

    |0     |6     |11      |16     |21      |26    |31  |
    | PO   |  FRT |   FRA  |   FRB |   //   |   XO | Rc |

# 1.6.8 XL-FORM
    |0     |6    |9  |11  |14   |16    |19|20|21    |31 |
    | PO   |   BT    |     BA   |    BB      |   XO | / |
    | PO   |   BO    |     BI   |  /// |BH   |   XO |LK |
    | PO   |         |    ///             |S |   XO | / |
    | PO   |  BF |// |BFA |//   |     ///    |   XO | / |
    | PO   |              ///                |   XO | / |
    | PO   |             OC                  |   XO | / |

# 1.6.9 XFX-FORM
    |0     |6        |11|12             |20|21    |31 |
    | PO   |  RT     |     spr             |   XO | / |
    | PO   |  RT     |     tbr             |   XO | / |
    | PO   |  RT     |0 |     ///          |   XO | / |
    | PO   |  RT     |1 |  FXM          |/ |   XO | / |
    | PO   |  RT     |     dcr             |   XO | / |
    | PO   |  RT     |    pmrn             |   XO | / |
    | PO   |  RT     |   BHRBE             |   XO | / |
    | PO   |  DUI    |    DUIS             |   XO | / |
    | PO   |  RS     |0 |  FXM          |/ |   XO | / |
    | PO   |  RS     |1 |  FXM          |/ |   XO | / |
    | PO   |  RS     |     spr             |   XO | / |
    | PO   |  RS     |     dcr             |   XO | / |
    | PO   |  RS     |    pmrn             |   XO | / |

# 1.6.10 XFL-FORM
    |0     |6|7             |15|16        |21    |31 |
    | PO   |L|    FLM       |W |FRB       |   XO |Rc |

# 1.6.11 XX1-FORM
    |0     |6        |11       |16        |21    |31 |
    | PO   |  T      |   RA    |   RB     |   XO |TX |
    | PO   |  S      |   RA    |   RB     |   XO |SX |

# 1.6.12 XX2-FORM
    |0     |6    |9  |11   |14  |16        |21 |30|31 |
    | PO   |    T    |    ///   |    B     |XO |BX|TX |
    | PO   |    T    | /// |UIM |    B     |XO |BX|TX |
    | PO   |  BF | //|      /// |    B     |XO |BX| / |

# 1.6.13 XX3-FORM
    |0     |6     |9    |11   |16   |21 |22  |24    |29|30|31 |
    | PO   |     T      |   A |   B |         XO    |AX|BX|TX |
    | PO   |     T      |   A |   B |Rc |       XO  |AX|BX|TX |
    | PO   |  BF  |  // |   A |   B |         XO    |AX|BX|/  |
    | PO   |     T      |   A |   B |XO |SHW |   XO |AX|BX|TX |
    | PO   |     T      |   A |   B |XO |DM  |   XO |AX|BX|TX |

# 1.6.14 XX4-FORM
    |0     |6   |11   |16   |21   |26  |28|29 |30|31 |
    | PO   |  T |   A |   B |   C | XO |CX|AX |BX|TX |

# 1.6.15 XS-FORM
    |0     |6    |11    |16    |21    |30|31 |
    | PO   |  RS |   RA |   sh |   XO |sh|Rc |

# 1.6.16 XO-FORM
    |0   |6   |11  |13   |16   |21  |22  |31  |
    | PO | RT | RA       | RB  | OE | XO | Rc |
    | PO | RT | RA       | RB  |  / | XO | Rc |
    | PO | RT | RA       | RB  |  / | XO | /  |
    | PO | RT | RA       | /// | OE | XO | Rc |
    | PO | RT | IT | CVM | FRB | OE | XO | Rc |

# 1.6.17 A-FORM
    |0     |6     |11     |16      |21      |26    |31 |
    | PO   |  FRT |  FRA  |  FRB   |   FRC  |   XO |Rc |
    | PO   |  FRT |  FRA  |  FRB   |   ///  |   XO |Rc |
    | PO   |  FRT |  FRA  |  ///   |   FRC  |   XO |Rc |
    | PO   |  FRT |  ///  |  FRB   |   ///  |   XO |Rc |
    | PO   |   RT |  RA   |  RB    |   BC   |   XO |  /|
    | PO   |   RT |  RA   |  RB    |   SH   |   XO |Rc |

# 1.6.18 M-FORM
    |0     |6    |11    |16    |21    |26    |31|
    | PO   |  RS |   RA |   RB |   MB |   ME |Rc|
    | PO   |  RS |   RA |   SH |   MB |   ME |Rc|

# 1.6.19 MD-FORM
    |0     |6    |11    |16    |21    |27|30|31|
    | PO   |  RS |   RA |   sh |   mb |XO|sh|Rc|
    | PO   |  RS |   RA |   sh |   me |XO|sh|Rc|

# 1.6.20 MDS-FORM
    |0     |6    |11    |16    |21    |27    |31|
    | PO   |  RS |   RA |   RB |   mb |   XO |Rc|
    | PO   |  RS |   RA |   RB |   me |   XO |Rc|

# 1.6.21 VA-FORM
    |0      |6     |11     |16     |21|22 |25|26   |31|
    | PO    |  RT  |   RA  |   RB  |   RC    |   XO   |
    | PO    |  VRT |   VRA |   VRB |  VRC    |   XO   |
    | PO    |  VRT |   VRA |   VRB | /|SHB   |   XO   |
    | PO    |  VRT |   VRA |   VRB | /|BFA|/ |   XO   |

# 1.6.21.1 VA2-FORM
    |0      |6     |11     |16     |21  |24|26  |31  |
    | PO    |  RT  |   RA  |   RB  | RC    | XO | Rc |

# 1.6.22 VC-FORM
    |0      |6     |11     |16     |21|22   |31|
    | PO    |  VRT |   VRA |   VRB |Rc|   XO   |

# 1.6.23 VX-FORM
    |0      |6     |11           |16    |21   |31|
    | PO    |  VRT |     VRA     | VRB  |   XO   |
    | PO    |  VRT |      ///    | VRB  |   XO   |
    | PO    |  VRT |     UIM     | VRB  |   XO   |
    | PO    |  VRT | / UIM       | VRB  |   XO   |
    | PO    |  VRT |  // UIM     | VRB  |   XO   |
    | PO    |  VRT |   /// UIM   | VRB  |   XO   |
    | PO    |  VRT |     SIM     |   ///|   XO   |
    | PO    |  VRT |          ///|      |   XO   |
    | PO    |      |///          | VRB  |   XO   |

# 1.6.24 EVX-FORM
    |0      |6   |9 |11    |16    |21    |31|
    | PO    |   RS  |   RA |   RB |   XO    |
    | PO    |   RS  |   RA |   UI |   XO    |
    | PO    |   RT  |   ///|   RB |   XO    |
    | PO    |   RT  |   RA |   RB |   XO    |
    | PO    |   RT  |   RA |   ///|   XO    |
    | PO    |   RT  |   UI |   RB |   XO    |
    | PO    |  BF|//|   RA |   RB |   XO    |
    | PO    |   RT  |   RA |   UI |   XO    |
    | PO    |   RT  |   SI |   ///|   XO    |

# 1.6.25 EVS-FORM
    |0      |6   |11    |16    |21    |29 |31 |
    | PO    |  RT|   RA |   RB |   XO |BFA    |

# 1.6.26 Z22-FORM
    |0      |6  |9 |11     |16     |22    |31 |
    | PO    | BF|//|   FRA |   DCM |   XO | / |
    | PO    | BF|//|  FRAp |   DCM |   XO | / |
    | PO    | BF|//|   FRA |   DGM |   XO | / |
    | PO    | BF|//|  FRAp |   DGM |   XO | / |
    | PO    |  FRT |   FRA |    SH |   XO |Rc |
    | PO    |  FRTp|  FRAp |    SH |   XO |Rc |

# 1.6.27 Z23-FORM
    |0     |6     |11    |15 |16     |21 |23    |31 |
    | PO   |  FRT |    TE    |   FRB |RMC|   XO |Rc |
    | PO   |  FRTp|    TE    |  FRBp |RMC|   XO |Rc |
    | PO   |  FRT |   FRA    |   FRB |RMC|   XO |Rc |
    | PO   |  RT  |   RA     |   RB  |SH |   XO |Rc |
    | PO   |  RS  |   RA     |   RB  |SH |   XO |Rc |
    | PO   |  FRT |   RA     |   RB  |SH |   XO |Rc |
    | PO   |  FRS |   RA     |   RB  |SH |   XO |Rc |
    | PO   |  RT  |   RA     |   RB  |CY |   XO |Rc |
    | PO   |  FRTp|   FRA    |  FRBp |RMC|   XO |Rc |
    | PO   |  FRTp|  FRAp    |  FRBp |RMC|   XO |Rc |
    | PO   |  FRT |  /// | R | FRB   |RMC|   XO |Rc |
    | PO   |  FRTp|  /// | R | FRBp  |RMC|   XO |Rc |

# 1.6.29 SVI-FORM
    |0     |6    |11    |16   |21 |23  |24|25|26    31|
    | PO   |  SVG|rmm   | SVd |ew |SVyx|mm|sk|   XO   |

# 1.6.30 SVL-FORM
    |0     |6    |11    |16   |23 |24 |25 |26    |31 |
    | PO   |  RT |   RA | SVi |ms |vs |vf |   XO |Rc |
    | PO   |  RT | /    | SVi |/  |/  |vf |   XO |Rc |

# 1.6.31 SVC-FORM
    |0     |6    |9    |11     |
    | PO   | SCi | SCm | SCi   |

# 1.6.32 SVR-FORM
    |0     |6    |9    |11    | 15     |
    | PO   | SCi | SCm | SRb  | SRi    |

# 1.6.33 SVD-FORM
    |0     |6    |11   |16   |21      |31 |
    | PO   | RT  |   RA| RC  |  SVD       |
    | PO   | RS  |   RA| RC  |  SVD       |
    | PO   | FRT |   RA| RC  |  SVD       |
    | PO   | FRS |   RA| RC  |  SVD       |

# 1.6.34 SVDS-FORM
    |0     |6      |11    |16   |21    |30  |31 |
    | PO   |   RT  |   RA | RC  | SVDS |  XO    |
    | PO   |   RS  |   RA | RC  | SVDS |  XO    |

# 1.6.35 SVM-FORM
    |0     |6        |11      |16    |21    |25 |26    |31  |
    | PO   |  SVxd   |   SVyd | SVzd | SVrm |vf |   XO      |

# 1.6.35.1 SVM2-FORM
    |0     |6     |10  |11      |16    |21 |24|25 |26    |31  |
    | PO   | SVo  |SVyx|   rmm  | SVd  |XO |mm|sk |   XO      |

# 1.6.36 SVRM-FORM
    |0     |6     |11  |13   |15   |17   |19   |21  |22   |26     |31 |
    | PO   | SVme |mi0 | mi1 | mi2 | mo0 | mo1 |pst |///  | XO        |

# 1.6.37 TLI-FORM
    |0   |6   |11   |16   |21   |29  |31 |
    | PO | RT |  RA |  RB | TLI | XO |Rc |
    | PO | RT |  RA |  RB | TLI | XO |L  |
    | PO | BT |  BA |  BB | TLI | XO |/  |

# 1.6.38 MM-FORM
    |0    |6    |11   |16   |21   |24 |25  |31  |
    | PO  | FRT | FRA | FRB | FMM     | XO | Rc |
    | PO  | RT  | RA  | RB  | MMM | / | XO | Rc |


# 1.6.28 Instruction Fields
    A (6)
        Field used by the tbegin. instruction to specify an
        implementation-specific function.
        Field used by the tend. instruction to specify the
        completion of the outer transaction and all nested
        transactions.
        Formats: X
    AA (30)
        Absolute Address.
        0    The immediate field represents an address
             relative to the current instruction address. For
             I-form branches the effective address of the
             branch target is the sum of the LI field
             sign-extended to 64 bits and the address of
             the branch instruction. For B-form branches
             the effective address of the branch target is
             the sum of the BD field sign-extended to 64
             bits and the address of the branch instruction.
        1    The immediate field represents an absolute
             address. For I-form branches the effective
             address of the branch target is the LI field
             sign-extended to 64 bits. For B-form branches
             the effective address of the branch target is
             the BD field sign-extended to 64 bits.
        Formats: B, I
    AX,A (29,11:15)
        Fields that are concatenated to specify a VSR to
        be used as a source.
        Formats: XX3, XX4
    BA (11:15)
        Field used to specify a bit in the CR to be used as
        a source.
        Formats: XL, X, TLI
    BB (16:20)
         Field used to specify a bit in the CR to be used as
         a source.
         Formats: XL, TLI
    BC (21:25)
         Field used to specify a bit in the CR to be used as
         a source.
         Formats: A
    BD (16:29)
         Immediate field used to specify a 14-bit signed
         two's complement branch displacement which is
         concatenated on the right with 0b00 and
         sign-extended to 64 bits.
         Formats: B
    BF (6:8)
         Field used to specify one of the CR fields or one of
         the FPSCR fields to be used as a target.
         Formats: D, X, XL, XX2, XX3, Z22, CRB
    BFA (22:24)
         Field used to specify one of the CR fields 
         to be used as a source.
         Formats: VA
    BFA (29:31)
         Field used to specify one of the CR fields or one of
         the FPSCR fields to be used as a source.
         Formats: EVS
    BFA (11:13)
         Field used to specify one of the CR fields or one of
         the FPSCR fields to be used as a source.
         Formats: X, XL, CRB
    BFB (16:18)
         Field used to specify one of the CR fields
         to be used as a source.
         Formats: CRB, X
    BH (19:20)
         Field used to specify a hint in the Branch Condi-
         tional to Link Register and Branch Conditional to
         Count Register instructions. The encoding is
         described in Section 2.4, 'Branch Instructions'.
         Formats: XL
    BHRBE (11:20)
         Field used to identify the BHRB entry to be used
         as a source by the Move From Branch History
         Rolling Buffer instruction.
         Formats: XFX
    BI (11:15)
         Field used to specify a bit in the CR to be tested by
         a Branch Conditional instruction.
         Formats: B, X, XL
    bm (21:25)
         Field used to specify the Bit-mask Mode for bmask
         Formats: BM2
    BO (6:10)
         Field used to specify options for the Branch Condi-
         tional instructions. The encoding is described in
         Section 2.4, 'Branch Instructions'.
         Formats: B, XL, X, XL
    BT (6:10)
         Field used to specify a bit in the CR or in the
         FPSCR to be used as a target.
         Formats: XL, X, TLI
    BX,B (30,16:20)
        Fields that are concatenated to specify a VSR to
        be used as a source.
        Formats: XX2, XX3, XX4
    CT (7:10)
        Field used in X-form instructions to specify a cache
        target (see Section 4.3.2 of Book II).
        Formats: X
    CVM (13:15)
        Field used to specify conversion mode for
        integer -> floating-point conversion.
        Formats: XO
    CX,C (28,21:25)
        Fields that are concatenated to specify a VSR to
        be used as a source.
        Formats: XX4
    CY (21:22)
        Immediate field used for addex instruction
        Formats: Z23
    D (16:31)
        Immediate field used to specify a 16-bit signed
        two's complement integer which is sign-extended
        to 64 bits.
        Formats: D
    d0,d1,d2 (16:25,11:15,31)
        Immediate fields that are concatenated to specify a
        16-bit signed two's complement integer which is
        sign-extended to 64 bits.
        Formats: DX
    dc,dm,dx (25,29,11:15)
        Immediate fields that are concatenated to specify
        Data Class Mask.
        Formats: XX2
    DCM (16:21)
        Immediate field used to specify Data Class Mask.
        Formats: Z22
    DCMX (9:15)
        Immediate field used to specify Data Class Mask.
        Formats: X, XX2
    DGM (16:21)
        Immediate field used as the Data Group Mask.
        Formats: Z22
    DM (22:23)
        Immediate field used by xxpermdi instruction as
        doubleword permute control.
        Formats: XX3
    DRM (18:20)
        Immediate operand field used to specify new deci-
        mal floating-point rounding mode.
        Formats: X
    DUI (6:10)
        Field used by the dnh instruction (see Book III-E).
        Formats: XFX
    DUIS (11:20)
        Field used by the dnh instruction (see Book III-E).
        Formats: XFX
    DQ (16:27)
        Immediate field used to specify a 12-bit signed
        two's complement integer which is concatenated
        on the right with 0b0000 and sign-extended to 64
        bits.
        Formats: DQ
    DS (16:29)
        Immediate field used to specify a 14-bit signed
        two's complement integer which is concatenated
        on the right with 0b00 and sign-extended to 64 bits.
        Formats: DS
    EH (31)
        Field used to specify a hint in the Load and
        Reserve instructions. The meaning is described in
        Section 4.6.2, 'Load and Reserve and Store Con-
        ditional Instructions', in Book II.
        Formats: X
    EO (11:12)
        Expanded opcode field
        Formats: X
    EO (11:15)
        Expanded opcode field
        Formats: VX, X, XX2
    EX (31)
        Field used to specify Inexact form of round to
        quad-precision integer.
        Formats: X
    ew (21:22)
        Field used to specify the element width for SVI-Form
        Formats: SVI
    FC (16:20)
        Field used to specify the function code in Load/
        Store Atomic instructions.
        Formats: X
    FLM (7:14)
        Field mask used to identify the FPSCR fields that
        are to be updated by the mtfsf instruction.
        Formats: XFL
    FMM (21:24)
        Field used to specify minimum/maximum mode for fminmax.
        Formats: MM
    fmap (22:25)
        Field used to specify the CR Field set/clear map for CR Weird
        instructions.
        Formats: CW, CW2
    fmsk (12:15)
        Field used to specify the CR Field mask for CR Weird instructions.
        Formats: CW, CW2
    FRA (11:15)
        Field used to specify a FPR to be used as a
        source.
        Formats: A, MM, X, Z22, Z23, DCT
    FRAp (11:15)
        Field used to specify an even/odd pair of FPRs to
        be concatenated and used as a source.
        Formats: X, Z22, Z23
    FRB (16:20)
        Field used to specify an FPR to be used as a
        source.
        Formats: A, MM, X, XFL, XO, Z23, DCT
    FRBp (16:20)
         Field used to specify an even/odd pair of FPRs to
         be concatenated and used as a source.
         Formats: X, Z23
    FRC (21:25)
         Field used to specify an FPR to be used as a
         source.
         Formats: A
    FRS (6:10)
         Field used to specify an FPR to be used as a
         source.
         Formats: D, X, DX, Z23
    FRSp (6:10)
         Field used to specify an even/odd pair of FPRs to
         be concatenated and used as a source.
         Formats: DS, X
    FRT (6:10)
         Field used to specify an FPR to be used as a tar-
         get.
         Formats: A, D, MM, X, Z22, Z23, DCT, Z23
    FRTp (6:10)
         Field used to specify an even/odd pair of FPRs to
         be concatenated and used as a target.
         Formats: DS, X, Z22, Z23
    FXM (12:19)
         Field mask used to identify the CR fields that are to
         be written by the mtcrf and mtocrf instructions, or
         read by the mfocrf instruction.
         Formats: XFX
    IB (16:20)
         Immediate field used to specify a 5-bit signed inte-
         ger.
         Formats: MDS
    IH (8:10)
         Field used to specify a hint in the SLB Invalidate
         All instruction. The meaning is described in
         Section 5.9.3.2, 'SLB Management Instructions',
         in Book III.
         Formats: X
    IMM8 (13:20)
         Immediate field used to specify an 8-bit integer.
         Formats: X
    IS (6:10)
         Immediate field used to specify a 5-bit signed inte-
         ger.
         Formats: MDS
    IT (11:12)
        Field used to specify integer type for FPR <-> GPR conversions.
        Formats: X, XO
    L (6)
         Field used to specify whether the mtfsf instruction
         updates the entire FPSCR.
         Formats: XFL
    L2 (9:10)
         Field used by the Data Cache Block Flush instruc-
         tion (see Section 4.3.2 of Book II) and also by the
         Synchronize instruction (see Section 4.6.3 of Book
         II).
         Formats: X
    L (10)
         Field used to specify whether a fixed-point Com-
         pare instruction is to compare 64-bit numbers or
         32-bit numbers.
         Field used by the Compare Range Byte instruction
         to indicate whether to compare against 1 or 2
         ranges of bytes.
         Formats: D, X
    L1 (15)
         Field used by the Move To Machine State Register
         instruction (see Book III).
         Field used by the SLB Move From Entry VSID and
         SLB Move From Entry ESID instructions for imple-
         mentation-specific purposes.
         Formats: X
    L3 (14:15)
         Field used by the Deliver A Random Number
         instruction (see Section 3.3.9, 'Fixed-Point Arith-
         metic Instructions') to choose the random number
         format.
         Formats: X
    L (26)
         Field used to specify whether mask-in occurs in bmask
         Formats: BM2
    L (31)
         Field used to specify whether the grevlut instruction
         updates the whole GPR or the first half.
         Formats: TLI
    LEV (20:26)
         Field used by the System Call instructions.
         Formats: SC
    LI (6:29)
         Immediate field used to specify a 24-bit signed
         two's complement integer which is concatenated
         on the right with 0b00 and sign-extended to 64
         bits.
         Formats: I
    LK (31)
         LINK bit.
         0     Do not set the Link Register.
         1     Set the Link Register. The address of the
               instruction following the Branch instruction is
               placed into the Link Register.
         Formats: B, I, XL
    rmm (11:15)
        Field used to specify a REMAP shape for SVI-Form
        Formats: SVI
    msk (9:10,14:15)
        Field used by crternlogi and crbinlut to select which bits
        of CR Field BF are to be modified. Requires BF to be Read-Modify-Write
        Formats: CRB
    MB (21:25)
        Field used in M-form instructions to specify the first
        1-bit of a 64-bit mask, as described in
        Section 3.3.14, 'Fixed-Point Rotate and Shift
        Instructions' on page 101.
        Formats: M
    mb (21:26)
        Field used in MD-form and MDS-form instructions
        to specify the first 1-bit of a 64-bit mask, as
        described in Section 3.3.14, 'Fixed-Point Rotate
        and Shift Instructions' on page 101.
        Formats: MD, MDS
    me (21:26)
        Field used in MD-form and MDS-form instructions
        to specify the last 1-bit of a 64-bit mask, as
        described in Section 3.3.14, 'Fixed-Point Rotate
        and Shift Instructions' on page 101.
        Formats: MD, MDS
    ME (26:30)
        Field used in M-form instructions to specify the last
        1-bit of a 64-bit mask, as described in
        Section 3.3.14, 'Fixed-Point Rotate and Shift
        Instructions' on page 101.
        Formats: M
    mi0 (11:12)
        Field used in REMAP to select the SVSHAPE for 1st input register
        Formats: SVRM
    mi1 (13:14)
        Field used in REMAP to select the SVSHAPE for 2nd input register
        Formats: SVRM
    mi2 (15:16)
        Field used in REMAP to select the SVSHAPE for 3rd input register
        Formats: SVRM
    mm (24)
        Field used to specify the meaning of the rmm field for SVI-Form
        and SVM2-Form
        Formats: SVI, SVM2
    MMM (21:23)
        Field used to specify minimum/maximum mode for integer minmax.
        Formats: MM
    mo0 (17:18)
        Field used in REMAP to select the SVSHAPE for 1st output register
        Formats: SVRM
    mo1 (19:20)
        Field used in REMAP to select the SVSHAPE for 2nd output register
        Formats: SVRM
    MO (6:10)
        Field used in X-form instructions to specify a sub-
        set of storage accesses.
        Formats: X
    ms (23)
        Field used in Simple-V to specify whether MVL is to be set
        Formats: SVL
    NB (16:20)
        Field used to specify the number of bytes to move
        in an immediate Move Assist instruction.
        Formats: X
    nh (26)
        Field used to specify which half of RC to select as a
        LUT2 (4-bit lookup) table.
        Formats: BM2
    OC (6:20)
        Field used by the Embedded Hypervisor Privilege
        instruction.
        Formats: XL
    OE (21)
        Field used by XO-form instructions to enable set-
        ting OV and SO in the XER.
        Formats: XO
    PO (0:5)
        Primary opcode field.
        Formats: all
    PRS (14)
        Field used to specify whether to invalidate pro-
        cess- or partition-scoped entries for tlbie[l].
        Formats: X
    PS (22)
        Field used to specify preferred sign for BCD opera-
        tions.
        Formats: VX
    pst (21)
        Field used in REMAP to indicate "persistence" mode (REMAP
        continues to apply to multiple instructions)
        Formats: SVRM
    PT (28:31)
        Immediate field used to specify a 4-bit unsigned
        value.
        Formats: DQ
    R (10)
        Field used by the tbegin. instruction to specify the
        start of a ROT.
        Formats: X
    R (15)
        Immediate field that specifies whether the RMC is
        specifying the primary or secondary encoding
        Field used to specify whether to invalidate Radix
        Tree or HPT entries for tlbie[l].
        Formats: X, Z23
    RA (11:15)
        Field used to specify a GPR to be used as a
        source or as a target.
        Formats: A, BM2, D, DQ, DQE, DS, M, MD, MDS, MM, TX, VA, VA2, VX, X, XO, XS, SVL, TLI, Z23
    RB (16:20)
        Field used to specify a GPR to be used as a
        source.
        Formats: A, BM2, M, MDS, MM, VA, VA2, X, XO, TLI, Z23
    Rc (21)
        RECORD bit.
        0    Do not alter the Condition Register.
        1    Set Condition Register Field 6 as described in
             Section 2.3.1,     'Condition  Register'     on
             page 30.
        Formats: VC, XX3
    RC (21:25)
        Field used to specify a GPR to be used as a
        source.
        Formats: VA, VA2, SVD, SVDS, BM2
    Rc (31)
        RECORD bit.
        0    Do not alter the Condition Register.
        1    Set Condition Register Field 0 or Field 1 as
             described in Section 2.3.1, 'Condition Regis-
             ter' on page 30.
        Formats: A, M, MD, MDS, MM, VA2, X, XFL, XO, XS, Z22, Z23, SVL, TLI, DCT
    RIC (12:13)
        Field used to specify what types of entries to inval-
        idate for tlbie[l].
        Formats: X
    RM (19:20)
        Immediate operand field used to specify new
        binary floating-point rounding mode.
        Formats: X
    RMC (21:22)
        Immediate field used for DFP rounding mode con-
        trol.
        Formats: Z23
    rmm (11:15)
        REMAP Mode field for SVI-Form and SVM2-Form
        Formats: SVI, SVM2
    RO (31)
        Round to Odd override
        Formats: X
    RS (6:10)
        Field used to specify a GPR to be used as a
        source.
        Formats: D, DS, M, MD, MDS, X, XFX, XS
    RSp (6:10)
        Field used to specify an even/odd pair of GPRs to
        be concatenated and used as a source.
        Formats: DS, X, Z23
    RT (6:10)
        Field used to specify a GPR to be used as a target.
        Formats: A, BM2, D, DQE, DS, DX, MM, VA, VA2, VX, X, XFX, XO, XX2, SVL, TLI, Z23
    RTp (6:10)
        Field used to specify an even/odd pair of GPRs to
        be concatenated and used as a target.
        Formats: DQ, X
    S (11)
        Immediate field that specifies signed versus
        unsigned conversion.
        Formats: X
    S (20)
        Immediate field that specifies whether or not the
        rfebb     instruction   re-enables      event-based
        branches.
        Formats: XL
    SCi (6:8)
        Index to SV Context Propagation SPR
        Formats: SVC, SVR
    SCm (9:10)
        SV Context Propagation Mode
        Formats: SVC, SVR
    SCi (11:31)
        SV Context Propagation immediate bitfield
        Formats: SVC
    SRb (11:14)
        SV REMAP byte-reversal field.
        Formats: SVC
    SRi (15:31)
        SV REMAP immediate FIFO bitfield
        Formats: SVC
    SH (16:20)
        Field used to specify a shift amount.
        Formats: M, X
    SH (16:21)
        Field used to specify a shift amount.
        Formats: Z22
    SH (21:25)
        Field used to specify a shift amount.
        Formats: A
    SH (21:22)
        Immediate field used for selecting operands (shift mode)
        Formats: Z23
    sh (30,16:20)
        Fields that are concatenated to specify a shift
        amount.
        Formats: MD, XS
    SHB (22:25)
        Field used to specify a shift amount in bytes.
        Formats: VA
    SHW (22:23)
         Field used to specify a shift amount in words.
         Formats: XX3
    SI (16:20)
         Immediate field used to specify a 5-bit signed inte-
         ger.
         Formats: X
    SI (16:31)
         Immediate field used to specify a 16-bit signed
         integer.
         Formats: D
    SIM (11:15)
         Immediate field used to specify a 5-bit signed inte-
         ger.
         Formats: VX
    sk (25)
        Field used to specify dimensional skipping in svindex
        Formats: SVI, SVM2
    SP (11:12)
         Immediate field that specifies signed versus
         unsigned conversion.
         Formats: X
    spr (16:20,11:15)
         Field used to specify a Special Purpose Register
         for the mtspr and mfspr instructions.
         Formats: XFX
    SPR (11:20)
         Field used to specify a Special Purpose Register
         for the mtspr and mfspr instructions.
         Formats: XFX
    SR (12:15)
         Field used by the Segment Register Manipulation
         instructions (see Book III).
         Formats: X
    SVd (16:20)
        Immediate field used to specify the size of the REMAP dimension
        in the svindex and svshape2 instructions
        Formats: SVI, SVM2
    SVD (21:31)
        Immediate field used to specify an 11-bit signed
        two's complement integer which is sign-extended
        to 64 bits.
        Formats: SVD
    SVDS (16:29)
        Immediate field used to specify a 9-bit signed
        two's complement integer which is concatenated
        on the right with 0b00 and sign-extended to 64 bits.
        Formats: SVDS
    SVG (6:10)
        Field used to specify a GPR to be used as a
        source for indexing.
        Formats: SVI
    SVi (16:22)
         Simple-V immediate field for setting VL or MVL
         Formats: SVL
    SVme (6:10)
         Simple-V "REMAP" map-enable bits (0-4)
         Formats: SVRM
    SVo (6:9)
        Field used by the svshape2 instruction as an offset
        Formats: SVM2
    SVrm (21:24)
         Simple-V "REMAP" Mode
         Formats: SVM
    SVxd (6:10)
         Simple-V "REMAP" x-dimension size
         Formats: SVM
    SVyd (11:15)
         Simple-V "REMAP" y-dimension size
         Formats: SVM
    SVzd (16:20)
         Simple-V "REMAP" z-dimension size
         Formats: SVM
    SX,S (28,6:10)
         Fields SX and S are concatenated to specify a
         VSR to be used as a source.
         Formats: DQ
    SX,S (31,6:10)
         Fields SX and S are concatenated to specify a
         VSR to be used as a source.
         Formats: X
    T (9:10)
          Field used to specify the type of invalidation done
          by a TLB Invalidate Local instruction (see Book
          III-E).
         Formats: X
    TBR (11:20)
         Field used by the Move From Time Base instruc-
         tion (see Section 6.1 of Book II).
         Formats: X
    TE (11:15)
         Immediate field that specifies a DFP exponent.
         Formats: Z23
    TH (6:10)
         Field used by the data stream variant of the dcbt
         and dcbtst instructions (see Section 4.3.2 of Book
         II).
         Formats: X
    TLI (21:28)
         Field used by the ternlogi instruction as the
         look-up table.
         Formats: TLI
    TLI (21:25,19:20,31)
        Field used by the crternlogi instruction as the
        look-up table.
        Formats: CRB
    TO (6:10)
         Field used to specify the conditions on which to
         trap.     The    encoding     is    described   in
         Section 3.3.10.1,     'Character-Type     Compare
         Instructions' on page 87.
         Formats: D, X
    TX,T (28,6:10)
         Fields that are concatenated to specify a VSR to
         be used as either a target.
         Formats: DQ
    TX,T (31,6:10)
         Fields that are concatenated to specify a VSR to
         be used as either a target or a source.
         Formats: X, XX2, XX3, XX4
    U (16:19)
         Immediate field used as the data to be placed into
         a field in the FPSCR.
         Formats: X
    UI (16:20)
         Immediate field used to specify a 5-bit unsigned
         integer.
         Formats: TX
    UI (16:31)
         Immediate field used to specify a 16-bit unsigned
         integer.
         Formats: D
    UIM (11:15)
         Immediate field used to specify a 5-bit unsigned
         integer.
         Formats: VX, X
    UIM (12:15)
         Immediate field used to specify a 4-bit unsigned
         integer.
         Formats: VX, XX2
    UIM (13:15)
         Immediate field used to specify a 3-bit unsigned
         integer.
         Formats: VX
    UIM (14:15)
         Immediate field used to specify a 2-bit unsigned
         integer.
         Formats: VX, XX2
    VRA (11:15)
         Field used to specify a VR to be used as a source.
         Formats: VA, VC, VX
    VRB (16:20)
        Field used to specify a VR to be used as a source.
        Formats: VA, VC, VX
    VRC (21:25)
        Field used to specify a VR to be used as a source.
        Formats: VA
    VRS (6:10)
        Field used to specify a VR to be used as a source.
        Formats: DS, X
    VRT (6:10)
        Field used to specify a VR to be used as a target.
        Formats: DS, VA, VC, VX, X
    vf (25)
        Field used in Simple-V to specify whether "Vertical" Mode is set
        Formats: SVL, SVM
    vs (24)
        Field used in Simple-V to specify whether VL is to be set
        Formats: SVL
    W (15)
        Field used by the mtfsfi and mtfsf instructions to
        specify the target word in the FPSCR.
        Formats: X, XFL
    WC (9:10)
        Field used to specify the condition or conditions
        that cause instruction execution to resume after
        executing a wait instruction (see Section 4.6.4 of
        Book II).
        Formats: X
    XBI (21:24)
        Field used to specify a bit in the XER.
        Formats: MDS, MDS, TX
    XO (21:23,26:31)
        Extended opcode field.
        Formats: SVM2
    XO (21,23:31)
        Extended opcode field.
        Formats: VX
    XO (21:24,26:28)
        Extended opcode field.
        Formats: XX2
    XO (21:24:28)
        Extended opcode field.
        Formats: XX3
    XO (21:28)
        Extended opcode field.
        Formats: XX3
    XO (21:29)
        Extended opcode field.
        Formats: XS, XX2
    XO (21:30)
        Extended opcode field.
        Formats: X, XFL, XFX, XL
    XO (21:31)
        Extended opcode field.
        Formats: VX
    XO (22:30)
        Extended opcode field.
        Formats: XO, XX3, Z22
    XO (22:31)
        Extended opcode field.
        Formats: VC
    XO (23:30)
        Extended opcode field.
        Formats: X, Z23
    XO (25:30)
        Extended opcode field.
        Formats: MM, TX
    XO (26:27)
        Extended opcode field.
        Formats: XX4
    XO (26:30)
        Extended opcode field.
        Formats: A, DX, VA2, SVL, CRB, DCT
    XO (26:31)
        Extended opcode field.
        Formats: VA, SVM, SVRM, SVI
    XO (27:29)
        Extended opcode field.
        Formats: MD
    XO (27:30)
        Extended opcode field.
        Formats: MDS
    XO (27:31)
        Extended opcode field.
        Formats: BM2
    XO (29:31)
        Extended opcode field.
        Formats: DQ
    XO (29:30)
        Extended opcode field.
        Formats: TLI
    XO (30)
        Extended opcode field.
        Formats: SC
    XO (30:31)
        Extended opcode field.
        Formats: DQE, DS, SC
    SVyx (23)
        Field used to specify loop dimension order in svindex
        Formats: SVI
    SVyx (10)
        Field used to specify loop dimension order in svshape2
        Formats: SVM2
