Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### SI2BK

Prolog

Control Block Contents
SI2BK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### SI2BK Prolog

     NAME       : HCPSI2GB
     DESCRIPTION: SIE STATE DESCRIPTION (Format 2)
     DSECT      : SI2BK
     Function   :
                  This control block describes a guest (virtual
                  machine) to the interpretive-execution facility
                  of the machine (embodied in the SIE instruction).
                  It defines a SIE format-2 state description, which
                  is the operand of a host SIE instruction when CP is
                  running as a z/Arch mode host. The SIE state
                  description used by the host control program to run
                  a guest is imbedded in the VMDBK, which is
                  described by HCPVMDBK COPY.
                  The SIE state description is also used by a guest
                  control program operating in zArch mode to run a
                  virtual guest. In that context, it is the operand
                  of a guest SIE instruction.
                  This control block is defined by processor
                  architecture.
     Located by : VMDSDSC in the VMDBK
                  VMDSDSC in the V/SIE VMDBK (which is
                  identified by VMDTYPE = VMDTYPSI)
     Created by : HCPBVM, HCPWVS
     Deleted by : HCPUSO, HCPWSIFR
     Comments   :
                  As noted above, VM uses the state description in two
                  contexts:
                  1) It is imbedded within the VMDBK which we use to
                  represent first-level guests (RGuests) when we issue
                  the SIE instruction to run those guests.  In this
                  case, we refer to it as a SIEBK.
                  Some of the comments on fields below apply only to the
                  SIEBKs which are imbedded in RGuest VMDBKs.  Those
                  comments are surrounded by the annotation:
                  [VMDBK only:   ].
                  2) It is an argument of an RGuest's SIE instruction.
                  In this context, it is not associated with a VMDBK --
                  at least, our usage can not depend on such an
                  association, as we are limited to the interface
                  specified by the interpretive-execution architecture.
                  When referring to such a state description, we call it
                  an SI1BK (if the RGuest is in ESA/370 or ESA/390 mode)
                  or an SI2BK (if the RGuest is in zArch mode).
                  Note that in processing such a state description, we
                  will translate it into a "shadow" state description
                  imbedded in a vSIE VMDBK; we may thereafter refer to
                  it as a SIEBK.  In general, "[VMDBK only:]" comments
                  do not apply to the SIEBKs in vSIE VMDBKs.

#### SI2BK Control Block Content

#### SI2BK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      SI2BK          SIE STATE DESCRIPTOR BLOCK
                                            (format 2)
    0000    0 Bitstring  512 SI2SDSC (0)    Guest machine state description
                                            (format 2)
    0000    0 Signed       4 SI2INTWD (0)   Symbol on word boundary for
                                            Compare-and-Swap operations
    0000    0 Bitstring    1 SI2NTVCT       Emulation intervention control
              ...1 ....      SI2IPWAI       X'10' Wait/Run bit. When this bit
                                            is set, the state description is
                                            "waiting", and host intervention
                                            is needed to make it runnable.
              .... 1...      SI2IPXTC       X'08' EXTERNAL CALL INTERRUPTION
                                            PENDING
              .... .1..      SI2IPSTP       X'04' SIE stopping control
              .... ..1.      SI2IPVIO       X'02' I/O INTERRUPTION PENDING
              .... ...1      SI2IPEXT       X'01' EXTERNAL INTERRUPTION
                                            PENDING
          SIESTATC is serialized in the following way:
           - Testing or modifying SIERUNNING requires Dispatch Lock.
           - Modifying any other bit requires Dispatch Lock AND
             either Guest Instruction-stream or Console Function
             Mode.  Testing any of these other bits only requires
             that 1 of the 3 previously mentioned serializations
             is held.
    0001    1 Bitstring    1 SI2STATC       SIE state control fields
              1... ....      SI2RUNNING     X'80' Indicates guest CPU is
                                            running
              .1.. ....      SI2RSCB        X'40' SIE-state-retention
                                            retained- status control bit.
                                            When 1, an internal version of
                                            the contents of certain fields of
                                            the state description retained
                                            from a previous SIE instruction
                                            invocation may be used
              .... ..1.      SI2EXTMR       X'02' Expedite-Timer processing
                                            enabled
              .... ...1      SI2EXRUN       X'01' Expedite-Run processing
                                            enabled
             SIxMODE and SIxMODEX contain bits
          that can be used to determine the machine mode type.
          [VMDBK only:  In the state descriptions which VM imbeds in
          (RGuest) VMDBKs, these bits should NOT be used for this
          purpose anymore; instead, the HCPVMODE macro should be
          used to test for machine modes: System-370, ESA/370,
          ESA/XC.  370-XA machines are considered to be ESA/370.]
    0002    2 Bitstring    1 SI2MODEX       Machine mode control byte MX
              1... ....      SI2RRF         X'80' Region Relocate installed
              .1.. ....      SI22NDVV       X'40' Indicates Rguest runs V=V
                                            guests via uVSIE (microcode
                                            VSIE). [VMDBK only: This bit is
                                            set at the first SIE instruction
                                            intercept if TRACE is not being
                                            used and SIERRF is set. Valid in
                                            all VMDBKs.]
              ..1. ....      SI22NDVR       X'20' Indicates Rguest runs V=R
                                            guests via uVSIE (microcode
                                            VSIE). [VMDBK only: See SIE2NDVV
                                            comments for when set.]
              .... 1...      SI2ESAME       X'08' Guest is in zArch mode
              .... ...1      SI2MCDS        X'01' If MCDS facility is
                                            installed and ESA/370 mode is
                                            enabled, then the guest is in
                                            MCDS mode.
    0003    3 Bitstring    1 SI2MODE        Guest machine mode controls
              .... 1...      SI2VR          X'08' V=R GUEST (PREFERRED
                                            STORAGE) STORAGE FOR THE V=R
                                            GUEST IS MAPPED SO THAT GUEST
                                            ABSOLUTE ADDRESSES ARE EQUAL TO
                                            HOST ABSOLUTE ADDRESSES.
              .... ...1      SI2GPE         X'01' This bit signifies that the
                                            guest per enhancement feature
                                            should be used. When set, guest
                                            per enhancement makes it so that
                                            guest PER is always enabled. This
                                            bit overrides bit 1 in the guest
                                            PSW.
    0004    4 Signed       4 SI2PREFX       Guest prefix register value
    0008    8 Signed       4 *              Reserved for IBM hardware
    000C   12 Signed       4 *              Reserved for programmingg
    0010   16 Dbl-Word     8 *              Reserved for IBM hardware
    0018   24 Dbl-Word     8 *              Reserved for IBM hardware
    0020   32 Dbl-Word     8 SI2RSVD1       Reserved for IBM hardware (former
                                            HIRES/LORES for 370 interval
                                            timer)
    0028   40 Bitstring    1 SI2CPUT0 (0)   HIGH-ORDER BYTE OF CPU TIMER
              1... ....      SI2CPUTN       X'80' TIMER VALUE IS NEGATIVE
    0028   40 Signed       8 SI2CPUTM       Guest CPU timer value [VMDBK
                                            only: This is usually managed by
                                            the interpretive-execution
                                            facility. See also the
                                            description of VMDVTZPT in the
                                            VMDBK.]
    0030   48 Signed       8 SI2CKC         Guest clock comparator value
    0038   56 Signed       8 SI2EPOCH       Guest time-of-day clock epoch To
                                            define delta between host TOD
                                            clock and guest TOD clock - epoch
                                            is added to host TOD clock value
                                            to obtain guest TOD clock value
    0040   64 Bitstring    1 SI2SVCTL       SVC interception controls
              1... ....      SI2SVCNN       X'80' INTERCEPT ALL SVC
                                            INSTRUCTIONS
              .1.. ....      SI2SVC1C       X'40' INTERCEPT ON SVC NUMBER IN
                                            SVC1N
              ..1. ....      SI2SVC2C       X'20' INTERCEPT ON SVC NUMBER IN
                                            SVC2N
              ...1 ....      SI2SVC3C       X'10' INTERCEPT ON SVC NUMBER IN
                                            SVC3N
    0041   65 Bitstring    1 SI2SVC1N       Intercept SVC number first id
    0042   66 Bitstring    1 SI2SVC2N       Intercept SVC number second id
    0043   67 Bitstring    1 SI2SVC3N       Intercept SVC number third id
    0044   68 Bitstring    2 SI2LCTLS (0)   LCTL/LCTLG interception controls
    0044   68 Bitstring    1 SI2LCTB0       LCTL interception, CR0-CR7
              1... ....      SI2LCTL0       X'80' INTERCEPT LCTL CR0
              .1.. ....      SI2LCTL1       X'40' INTERCEPT LCTL CR1
              ..1. ....      SI2LCTL2       X'20' INTERCEPT LCTL CR2
              ...1 ....      SI2LCTL3       X'10' INTERCEPT LCTL CR3
              .... 1...      SI2LCTL4       X'08' INTERCEPT LCTL CR4
              .... .1..      SI2LCTL5       X'04' INTERCEPT LCTL CR5
              .... ..1.      SI2LCTL6       X'02' INTERCEPT LCTL CR6
              .... ...1      SI2LCTL7       X'01' INTERCEPT LCTL CR7
    0045   69 Bitstring    1 SI2LCTB1       LCTL interception, CR8-CR15
              1... ....      SI2LCTL8       X'80' INTERCEPT LCTL CR8
              .1.. ....      SI2LCTL9       X'40' INTERCEPT LCTL CR9
              ..1. ....      SI2LCTLA       X'20' INTERCEPT LCTL CR10
              ...1 ....      SI2LCTLB       X'10' INTERCEPT LCTL CR11
              .... 1...      SI2LCTLC       X'08' INTERCEPT LCTL CR12
              .... .1..      SI2LCTLD       X'04' INTERCEPT LCTL CR13
              .... ..1.      SI2LCTLE       X'02' INTERCEPT LCTL CR14
              .... ...1      SI2LCTLF       X'01' INTERCEPT LCTL CR15
    0046   70 Signed       2 SI2ICPUA       Virtual CPU address for
                                            interpretive execution (bits
                                            10-15 are used, bits 0-9 are
                                            reserved for IBM hardware)
    0048   72 Bitstring    4 SI2ICTLS (0)   Interception controls
    0048   72 Bitstring    1 SI2ICPT0       Interception controls, byte 0
              1... ....      SI2ICPOP       X'80' Intercept operation
                                            exception program interruptions
              .1.. ....      SI2ICPRO       X'40' Intercept privileged
                                            operation program interruptions
              ..1. ....      SI2ICPRG       X'20' Intercept program
                                            interruptions
              .... ...1      SI2ICIPT       X'01' Intercept Invalidate Page
                                            Table Entry instructions (IPTE)
                                            or CSP or IDTE or CSPG
    0049   73 Bitstring    1 SI2ICPT1       Interception controls, byte 1
              .1.. ....      SI2ICLPS       X'40' Intercept Load PSW (LPSW),
                                            Load PSW Extended (LPSWE), and
                                            Extract PSW (EPSW) instructions
              ..1. ....      SI2ICPTL       X'20' Intercept Purge TLB (PTLB)
                                            and Purge ALB (PALB) instructions
              ...1 ....      SI2ICSSM       X'10' Intercept Set System Mask
                                            (SSM) instructions
              .... 1...      SI2ICBSA       X'08' Intercept Branch and Set
                                            Authority (BSA) instructions
              .... .1..      SI2ICSTC       X'04' Intercept Store Control
                                            (STCTL, STCTG) instructions
              .... ..1.      SI2ICSTN       X'02' Intercept Store Then And
                                            System Mask (STNSM) instructions
              .... ...1      SI2ICSTO       X'01' Intercept Store Then Or
                                            System Mask (STOSM) instructions
                       X'80'          Reserved for future IBM use
    004A   74 Bitstring    1 SI2ICPT2       Interception controls, byte 2
              1... ....      SI2ICSTK       X'80' Intercept Store Clock
                                            (STCK) instructions
              .1.. ....      SI2ICISK       X'40' Intercept Insert Storage
                                            Key Extended (ISKE) instructions
              ..1. ....      SI2ICSSK       X'20' Intercept Set Storage Key
                                            Extended (SSKE) instructions
              ...1 ....      SI2ICRRB       X'10' Intercept Reset Reference
                                            Bit Extended (RRBE) instructions
              .... 1...      SI2ICPC        X'08' Intercept Program Call (PC)
                                            instructions
              .... .1..      SI2ICPT        X'04' Intercept Program Transfer
                                            (PT) and Program Transfer with
                                            Instance (PTI) instructions
              .... ..1.      SI2ICTPT       X'02' Intercept Test Protection
                                            (TPROT) instructions
              .... ...1      SI2ICLSP       X'01' Intercept Load Address
                                            Space Parameters (LASP)
                                            instructions
    004B   75 Bitstring    1 SI2ICPT3       Interception controls, byte 3
              .1.. ....      SI2ICSPT       X'40' Intercept Set CPU Timer
                                            (SPT) and Store CPU Timer (STPT)
                                            instructions
              ..1. ....      SI2ICSCK       X'20' Intercept Set Clock
                                            Comparator (SCKC) and Store Clock
                                            Comparator (STCKC) instructions
                                            instruction
              .... 1...      SI2ICPR        X'08' Intercept Program Return
                                            (PR) instruction
              .... .1..      SI2ICBAK       X'04' Intercept Branch and Stack
                                            (BAKR) instruction
              .... ..1.      SI2ICPG        X'02' Intercept Page In (PGIN)
                                            and Page Out (PGOUT)
                                            instructions.
    004C   76 Bitstring    4 SI2ECA (0)     Execution controls
    004C   76 Bitstring    1 SI2ECA0        Execution controls, byte 0
              1... ....      SI2ECEXT       X'80' External Interruption
                                            Interpretation Assist
              .1.. ....      SI2ECINT       X'40' Intervention Bypass Assist
              ..1. ....      SI2ECWAI       X'20' Guest Wait-State Assist
              ...1 ....      SI2ECSGP       X'10' SIGP Interpretation Assist
              .... 1...      SI2ECALT       X'08' Alert monitoring bit
              .... .1..      SI2ECIO2       X'04' I/O-Interpretation-level-2
                                            activation bit
              .... ...1      SI2ECMVP       X'01' MVPG Facility enablement.
                                            When this bit is one, SIE will
                                            inter- pret the MVPG and IESBE
                                            opcodes.
    004D   77 Bitstring    1 SI2ECA1        Execution controls, byte 1
    004E   78 Bitstring    1 SI2ECA2        Execution controls, byte 2
    004F   79 Bitstring    1 SI2ECA3        Execution controls, byte 3
              .... .1..      SI2SIGA        X'04' Signal Adapter (SIGA)
                                            Assist
    0050   80 Bitstring    1 SI2ICODE       Interception Event Code This
                                            field describes a guest condition
                                            detected by the
                                            interpretive-execution facility
                                            (usually), which requires
                                            software intervention or
                                            simulation. [VMDBK only: It is
                                            also used by software to indicate
                                            that there exists a description
                                            of guest conditions by software,
                                            in VMDNTMOD, that requires
                                            sortware intervention for
                                            tracing.]
              00000000       SI2ENDOP       0 RESERVED FOR IBM SOFTWARE USE
                                            SIxENDOP is used to indicate that
                                            the guest machine is between
                                            instuctions, or currently
                                            executing in emulation mode
              00000004       SI2ICNTC       4 INSTRUCTION INTERCEPTION. A
                                            GUEST INSTRUCTION WAS FOUND BY
                                            EMULATION HARDWARE WHICH IS NOT
                                            EMULATED, OR WHICH WAS REQUESTED
                                            FOR INTERCEPTION IN THE
                                            INTERCEPTION CONTROLS.
              00000008       SI2ICPNT       8 PROGRAM INTERRUPT INTERCEPTION
              0000000C       SI2ICBOT       12 BOTH INSTRUCTION AND PROGRAM
                                            INTERRUPT INTERCEPTIONS
              00000010       SI2ICPEX       16 PENDING EXTERNAL INTERRUPT
              00000014       SI2ICXNT       20 EXTERNAL INTERRUPT
                                            INTERCEPTION
              00000018       SI2ICPIO       24 PENDING I/O INTERRUPT
                                            INTERCEPT
              0000001C       SI2ICWT        28 WAIT STATE INTERCEPTION
              00000020       SI2ICVAL       32 VALIDITY INTERCEPTION
              00000024       SI2IMISC       36 SOFTWARE USE ONLY Used to
                                            indicate that a software event
                                            has occurred which is not one of
                                            the other codes. [VMDBK only: the
                                            condition is further described in
                                            the VMDNTMOD field.]
              00000028       SI2ICSTP       40 STOP INTERCEPTION
              0000002C       SI2ICOUO       44 OPERATION EXCEPTION
                                            INTERCEPTION
              00000030       SI2ICALT       48 Alert interception
              00000038       SI2ICPIX       56 PARTIAL INSTRUCTION-EXECUTION
                                            INTERCEPTION
              0000003C       SI2ICIOR       60 I/O INTERRUPTION INTERCEPTION
              00000040       SI2ICION       64 I/O INSTRUCTION INTERCEPTION
              00000044       SI2ICRUN       68 Expedite-Run processing
                                            Interception
              00000048       SI2ICTMR       72 Expedite-Timer processing
                                            Interception
              00000003       SI2IMLT4       X'03' To ensure field is multiple
                                            of 4
    0051   81 Bitstring    1 SI2ICFLG       Instruction interception status
              .... ..1.      SI2ICIF        X'02' INSTRUCTION FETCH EVENT
                                            (P.E.R)
              .... ...1      SI2ICEX        X'01' THE INTERCEPTED INSTRUCTION
                                            WAS THE SUBJECT OF AN EXECUTE
                                            INST.
    0052   82 Signed       2 SI2IHCPU       Host CPU address that last
                                            entered emulation mode for this
                                            state description
    0054   84 Signed       2 *              Reserved for IBM use
    0056   86 Bitstring    6 SI2IPARM (0)   Interception parameter (A & B)
    0056   86 Signed       2 SI2IPA (0)     Interception parameter A Bits
                                            0-15
    0056   86 Signed       2 SI2INST (0)    Interception parameter bit 0-15
    0056   86 Bitstring    1 SI2INSTO       Interception parameter bits 0-7
                                            First byte of the OPCODE
              00000056       SI2IPA0        SI2INSTO
    0057   87 Bitstring    1 SI2INSTE       Interception parameter bit 8-15
              .1.1 .111      SI2IPA1        SI2INSTE Second byte of the
                                            OPCODE for extended opcode
                                            instruction or R1R2 field or
                                            immediate data field or length
                                            field
    0058   88 Signed       4 SI2IPB (0)     Interception parameter B Bits
                                            16-47 For instruction
                                            interception, this field contains
                                            bytes 2 and beyond of the
                                            instruction text, if the
                                            instruction is that long
    0058   88 Signed       2 SI2IPBH0 (0)   Halfword 0 of IPB
    0058   88 Bitstring    1 SI2IPB0        Byte 0 of IPB
    0059   89 Bitstring    1 SI2IPB1        Byte 1 of IPB
    005A   90 Signed       2 SI2IPBH1 (0)   Halfword 1 of IPB
    005A   90 Bitstring    1 SI2IPB2        Byte 2 of IPB
    005B   91 Bitstring    1 SI2IPB3        Byte 3 of IPB
    005C   92 Signed       4 SI2IBM3        Reserved for IBM hardware use
    0060   96 Signed       4 SI2RCP (0)     Controls for storage-key ops and
                                            reference and change preserv'n
    0060   96 Bitstring    1 SI2RCPB0       BYTE ZERO, FLAGS FOR STORAGE KEY
                                            ASSIST
              .1.. ....      SI2SKAIP       X'40' Storage key assist in
                                            progress
    0061   97 Bitstring    3 SI2ECB (0)     Execution Controls B
    0061   97 Bitstring    1 SI2ECBB0       Execution Controls B (ECB byte 0)
              1... ....      SI2QEBSM       X'80' (00) QEBSM Interpretation
                                            Active
              .1.. ....      SI2DMRI        X'40' (01) DMR Interpretation
    0062   98 Bitstring    1 SI2ECBB1 (0)   Execution Controls B (ECB byte 1)
    0062   98 Bitstring    1 SI2RCPB2       Byte two, flags for assists
              ...1 ....      SI2RCPBY       X'10' (11) RCP Bypass (B) for
                                            guest
    0063   99 Bitstring    1 SI2ECBB2       Execution Controls B (ECB byte 2)
    0064  100 Address      4 SI2ISCAA       System control area address
    0068  104 Signed       4 SI2RSVD2       Reserved for IBM hardware
    006C  108 Signed       4 SI2TODPR (0)   TOD Programmable Register
    006C  108 Signed       2 *              TODPR high half
    006E  110 Signed       2 SI2TODPF       TOD Programmable Field
    0070  112 Address      4 SI2GISA        GISA Absolute Address
    0074  116 Bitstring    4 SI2IOPCT (0)   I/O Interpretation Control 2
    0074  116 Bitstring    1 SI2AZN         Active zone number
    0075  117 Bitstring    1 *              Reserved for IBM hardware use
    0076  118 Signed       2 SI2DVSCS (0)   IRB DS mask
    0076  118 Bitstring    1 SI2DVST        Device status byte of the IRB DS
                                            mask - the contents of this field
                                            are ANDed with the device status
                                            byte of the IRB by TSCH to see if
                                            type B information is present
              1... ....      CSWATTN        X'80' ATTENTION
              .1.. ....      CSWSM          X'40' STATUS MODIFIER
              ..1. ....      CSWCUE         X'20' CONTROL UNIT END
              ...1 ....      CSWBUSY        X'10' BUSY
              .... 1...      CSWCE          X'08' CHANNEL END
              .... .1..      CSWDE          X'04' DEVICE END
              .... ..1.      CSWUC          X'02' UNIT CHECK
              .... ...1      CSWUE          X'01' UNIT EXCEPTION
              .... 11..      CSWCEDE        X'0C' CHANNEL END AND DEVICE END
              ..1. 11..      CSWCEDC        X'2C' CHANNEL END,DEVICE END,AND
                                            CUE
              .1.1 ....      CSWSMBSY       X'50' CONTROL UNIT BUSY
              .111 ....      CSWCBS         X'70' CONTROL UNIT BUSY AND END
              1... .1..      CSWDEA         X'84' DEVICE END AND ATTENTION
    0077  119 Bitstring    1 SI2SCST        Subchannel status byte of the IRB
                                            DS mask - the contents of this
                                            field are ANDed with the
                                            subchannel status byte of the IRB
                                            by TSCH to see if type B
                                            information is present
              1... ....      CSWPCI         X'80' PROGRAM CONTROLLED
                                            INTERRUPTION
              .1.. ....      CSWIL          X'40' INCORRECT LENGTH INDICATION
              ..1. ....      CSWPRG         X'20' CHANNEL PROGRAM CHECK
              ...1 ....      CSWPROT        X'10' STORAGE PROTECTION CHECK
              .... 1...      CSWCDC         X'08' CHANNEL DATA CHECK
              .... .1..      CSWCCC         X'04' CHANNEL CONTROL CHECK
              .... ..1.      CSWIFCC        X'02' INTERFACE CONTROL CHECK
              .... ...1      CSWCHC         X'01' CHANNEL CHAINING CHECK
              .... 111.      CSWHCE         X'0E' CDC+CCC+IFCC HARDWARE
                                            ERRORS
              ..11 ...1      CSWPCE         X'31' PRG+CHC+PROT PROGRAM ERRORS
    0078  120 Signed       4 SI2RSVD3 (0)   Reserved for IBM hardware
    0078  120 Bitstring    1 SI2AZM         Alert generating zone mask
    0079  121 Bitstring    2 SI2IBM2        Reserved for IBM hardware
    007B  123 Bitstring    1 *              Reserved for IBM hardware
    007C  124 Signed       4 *              Reserved for IBM hardware
    0080  128 Signed       8 SI2GMSOR       Guest real main-storage origin in
                                            host address space
    0088  136 Signed       8 SI2GMSLM       Guest real main-storage limit in
                                            host address space Bits 0-43 of
                                            this field, padded on the right
                                            with 20 *ones*, is the highest
                                            host virtual address to which the
                                            guest has access. Thus, the
                                            actual guest storage size is
                                            (GMSLM+1M-GMSOR).
              00FFFFFF       SI2GMSMKH      X'FFFFFFFF' Mask for significant
                                            bits of GMSOR/GMSLM -- high half
              00F00000       SI2GMSMKL      X'FFF00000' Ditto -- low half
    0090  144 Bitstring   16 SI2GPSW (0)    Guest PSW (zArch guests)
    0090  144 Bitstring    8 SI2PSW (0)     Guest PSW (ESA/390 guests)
    0090  144 Signed       4 SI2PSW0F (0)   Bytes 0:3 of guest PSW
    0090  144 Bitstring    1 SI2PSW0B (0)   Byte 0 of guest PSW
              1111 11..      PSWIOMSK       X'FC' CHANNEL MASK, CHANNELS 0-5
              .... ..1.      PSWIOSMB       X'02' I/O SUMMARY MASK, CHANNEL
                                            6-15
              .... ...1      PSWEXSMB       X'01' EXTERNAL INTERRUPT SUMMARY
                                            MASK
    0090  144 Bitstring    1 SI2PSW0        Byte 0 of guest PSW
              .1.. ....      PSWPERA        X'40' PROGRAM EVENT RECORDING
                                            ACTIVE
              .... .1..      PSWTRAN        X'04' ADDRESS TRANSLATE MODE
                                            ACTIVE
              .... ..1.      PSWIOSM        X'02' I/O INTERRUPTION SUMMARY
                                            MASK
              .... ...1      PSWEXSM        X'01' EXTERNAL INTERRUPT SUMMARY
                                            MASK
    0091  145 Bitstring    1 SI2PSW1        Byte 1 of guest PSW
              1111 ....      PSWKEY         X'F0' PSW ACCESS KEY EXTRACTION
                                            MASK
              .... 1...      PSWECMD        X'08' EXTENDED CONTROL MODE
                                            ACTIVE
              .... .1..      PSWMCHK        X'04' MACHINE CHECK SUMMARY MASK
              .... ..1.      PSWWAIT        X'02' PROGRAM WAIT STATE
              .... ...1      PSWPROB        X'01' PROGRAM PROBLEM STATE
              .... ...1      PSWMAPPD       X'01' For BC-mode PSWs created by
                                            the 370 Accommodation facility,
                                            this bit being set indicates that
                                            the PSW is really a "mapped" PSW.
                                            See HCPPSW.
    0092  146 Signed       2 SI2PSW2H (0)   Bytes 2:3 of guest PSW
    0092  146 Bitstring    1 SI2PSW2        Byte 2 of guest PSW
              11.. ....      PSWASMSK       X'C0' ADDRESS SPACE CONTROL MASK
              11.. ....      PSWHMODE       X'C0' HOME-SPACE MODE
              1... ....      PSWSMODE       X'80' SECONDARY MODE
              .1.. ....      PSWAMODE       X'40' ACCESS-REGISTER MODE
              ..11 ....      PSWCOND        X'30' PSW CONDITION CODE
              ..1. ....      PSWCOND2       X'20' PSW CONDITION CODE BIT FOR
                                            CC=2,3
              ...1 ....      PSWCOND1       X'10' PSW CONDITION CODE BIT FOR
                                            CC=1,3
              .... 1111      PSWPMSK        X'0F' FIXO+DECO+EXUN+SIGN PROGRAM
                                            MASK
              .... 1...      PSWFIXO        X'08' FIXED-PT OVERFLOW INTRPT
                                            MASK
              .... .1..      PSWDECO        X'04' DECIMAL OVERFLOW INTRPT
                                            MASK
              .... ..1.      PSWEXUN        X'02' EXPONENT UNDERFLOW INTRPT
                                            MASK
              .... ...1      PSWSIGN        X'01' SIGNIFICANCE INTERRUPT MASK
              .... ....      PSWPMODE       X'00' PRIMARY-SPACE MODE
    0093  147 Bitstring    1 SI2PSW3        Reserved for IBM hardware
              .... ...1      PSWEA          X'01' Extended Addressing Mode
    0094  148 Signed       4 SI2PSW4F (0)   Bytes 4:7 of guest PSW
    0094  148 Bitstring    1 SI2PSW4B (0)   Byte 4 of guest PSW
              11.. ....      PSWILCBC       X'C0' INSTRUCTION LENGTH CODE
                                            (ILC)
              1... ....      PSWILCB4       X'80' BC MODE ILC, 4 BYTE LENGTH
              .1.. ....      PSWILCB2       X'40' BC MODE ILC, 2 BYTE LENGTH
              ..11 ....      PSWCONDB       X'30' PSW CONDITION CODE
              ..1. ....      PSWCONB2       X'20' PSW CONDITION CODE BIT FOR
                                            CC=2,3
              ...1 ....      PSWCONB1       X'10' PSW CONDITION CODE BIT FOR
                                            CC=1,3
              .... 1111      PSWPMSKB       X'0F' FIXOB+DECOB+EXUNB+SIGNB
                                            PROGRAM MASK
              .... 1...      PSWFIXOB       X'08' FIXED-PT OVERFLOW INTRPT
                                            MASK
              .... .1..      PSWDECOB       X'04' DECIMAL OVERFLOW INTRPT
                                            MASK
              .... ..1.      PSWEXUNB       X'02' EXPONENT UNDERFLOW INTRPT
                                            MASK
              .... ...1      PSWSIGNB       X'01' SIGNIFICANCE INTERRUPT MASK
                                            Equate to define the open storage
                                            key associated with the
                                            Storage-Protection Override
                                            facility
              .... 1..1      KEYOPEN        9 Access-control bits for the
                                            open storage key. Equates for
                                            storage key processing. May be
                                            used to process storage key
                                            information in ISKE/SSKE operand
                                            format.
              1111 ....      KEYACC         X'F0' Storage key access control
              .... 1...      KEYFETCH       X'08' Storage key
                                            fetch-protection control
              1111 1...      KEYACCF        KEYACC+KEYFETCH Storage key
                                            access and fetch
              .... .1..      KEYREF         X'04' Storage key reference bit
              .... ..1.      KEYCHG         X'02' Storage key change bit
              .... .11.      KEYRC          KEYREF+KEYCHG Storage key
                                            reference and change
              1111 111.      KEYISOL        KEYACCF+KEYRC Isolate entire 7
                                            bit storage key Codes used as
                                            operand to SAC instruction
              .... ....      SACPRIM        X'000' Primary-space mode
              SI2PSW4B       SACSECO        X'100' Secondary-space mode
              SI2PSW4B       SACAR          X'200' Access-register mode
              SI2PSW4B       SACHOME        X'300' Home-space mode Codes used
                                            to locate instances of SAM* (Set
                                            Address Mode) instructions SAM31
                                            and SAM64 (used for cross
                                            reference as HCPXREF operands)
              ...1 1111      SAM31          31 Cross reference Set Addressing
                                            Mode entry into 31-bit addressing
                                            mode
              .1.. ....      SAM64          64 Cross reference Set Addressing
                                            Mode entry into 64-bit addressing
                                            mode Equates to help deal with
                                            virtual addresses.
              SI2PSW4B       MAXVSTOR       2047*1024*1024 Maximum virtual
                                            storage size
              SI2PSW4B       DATSXM         X'7FF00000' Isolate segment-index
                                            field of a virtual address.
              SI2PSW4B       DATPXM         X'000FF000' Isolate page-index
                                            field of a virtual address.
              SI2PSW4B       DATBXM         X'00000FFF' Isolate byte-index
                                            field of a virtual address.
                                            Equates related to access-list
                                            designations.
              SI2PSW4B       ALD0ALOM       X'7FFFFF80' Isolate access-list
                                            origin
              .111 1111      ALD0ALLM       X'0000007F' Isolate access-list
                                            length
              .... ..11      ALD0ALNS       3 Bits to shift right an ALEN to
                                            get the associated ALL value.
              1... ....      ALD0ALUN       128 Number of bytes in an
                                            "access-list unit", the number of
                                            bytes in the smallest variation
                                            of the size of an access list.
              .... .111      ALD0ALUS       7 Number of bits to shift left in
                                            order to multiply by ALD0ALUN.
              1... ....      ALDMIN         ALD0ALUN Length of smallest
                                            access list, in bytes.
              SI2PSW4B       ALDMAX         4096*4 Length of maximum access
                                            list, in bytes. Equates related
                                            to ASTEO-words:
              SI2PSW4B       ASWASTEOM      X'7FFFFFC0' Isolate ASTE origin
                                            Equates related to DUCTO-words:
              SI2PSW4B       DUWDUCTOM      X'7FFFFFC0' Isolate DUCT origin
                                            SIGP CODES DEFINITIONS SIGNAL
                                            PROCESSOR CODES
              .... ...1      SIGPSENS       001 SIGP SENSE
              .... ..1.      SIGPEXTC       002 SIGP EXTERNAL CALL
              .... ..11      SIGPEMER       003 SIGP EMERGENCY SIGNAL
              .... .1..      SIGPSTRT       004 SIGP START
              .... .1.1      SIGPSTOP       005 SIGP STOP
              .... .11.      SIGPRSTR       006 SIGP RESTART
              .... .111      SIGPIPR        007 SIGP INITIAL PROGRAM RESET
              .... 1...      SIGPPR         008 SIGP PROGRAM RESET
              .... 1..1      SIGPSSTT       009 SIGP STOP AND STORE STATUS
              .... 1.11      SIGPICPU       011 SIGP INITIAL CPU RESET
              .... 11..      SIGPCPU        012 SIGP CPU RESET
              .... 11.1      SIGPSPFX       013 SIGP SET PREFIX
              .... 111.      SIGPSSTS       014 SIGP STORE STATUS AT ADDRESS
              ...1 ...1      SIGPSXST       017 SIGP Store Extended Status At
                                            Address
              ...1 ..1.      SIGPSARC       018 SIGP Set Architecture
    0094  148 Bitstring    1 SI2PSW4        Byte 4 of guest PSW
              1... ....      PSW31BT        X'80' 31-BIT LOGICAL ADDRESSING
                                            MODE
              1... ....      PSWBA          PSW31BT Basic Addressing Mode
              .111 1111      PSWHIADR       X'7F' INSTRUCTION COUNTER BITS
                                            1-7 - MUST BE ZERO IN 24-BIT
                                            MODE.
              .... ....      PSW31AMF       X'80000000' ADDRESS MODE FULLWORD
                                            MASK - CORRESPONDS TO PSW31BT
    0095  149 Bitstring    3 SI2PSW57       Bytes 5:7 of guest PSW
    0098  152 Address      8 SI2PSWIA       Bytes 8:15 of guest PSW (zArch
                                            instruction address)
    00A0  160 Bitstring   16 SI2GG145 (0)   Guest GPR 14 and GPR 15
    00A0  160 Signed       8 SI2GG14        Guest GPR 14 for SIE use only
    00A8  168 Signed       8 SI2GG15        Guest GPR 15 for SIE use only
    00B0  176 Dbl-Word     8 *              Reserved for IBM hardware
    00B8  184 Signed       2 *              Reserved for IBM hardware
    00BA  186 Bitstring    6 SI2ESB (0)     Expanded-storage boundaries (for
                                            non-RRF guest)
    00BA  186 Bitstring    3 SI2XSO         Expanded-storage origin
    00BD  189 Bitstring    3 SI2XSL         Expanded-storage limit
    00C0  192 Bitstring   52 SI2UZP0        Interruption parameters Guest
                                            Prefix Storage Area bytes 128-175
                                            (x80-xAF) or, Guest Prefix
                                            Storage Area bytes 184-195
                                            (xB8-xC3) or, parameters for
                                            partial- execution interception
                                            depending on the event
    00F4  244 Bitstring    6 SI2IBM1        Reserved for IBM hardware
    00FA  250 Bitstring    2 SI2IEF         Migration Emulation Controls
    00FC  252 Signed       4 *              Reserved for IBM hardware
    0100  256 Bitstring  128 SI2GCRS (0)    Guest Control registers 0-15 If
                                            SIxMODEX.SIxESAME is NOT on then
                                            the 16 32-bit control registers
                                            are in the rightmost word of each
                                            doubleword register area
    0100  256 Signed       8 SI2GCR0 (0)    zArch Guest Control register 0
    0100  256 Bitstring    1 SI2GCR00       Guest CR0 byte 0
    0101  257 Bitstring    1 SI2GCR01       Guest CR0 byte 1
    0102  258 Bitstring    1 SI2GCR02       Guest CR0 byte 2
    0103  259 Bitstring    1 SI2GCR03       Guest CR0 byte 3
    0104  260 Bitstring    1 SI2GCR04       Guest CR0 byte 4
    0105  261 Bitstring    1 SI2GCR05       Guest CR0 byte 5
    0106  262 Bitstring    1 SI2GCR06       Guest CR0 byte 6
    0107  263 Bitstring    1 SI2GCR07       Guest CR0 byte 7
    0108  264 Signed       8 SI2GCR1 (0)    zArch Guest Control register 1
    0108  264 Bitstring    7 *
    010F  271 Bitstring    1 SI2GCR17       Guest CR1 byte 7
    0110  272 Signed       8 SI2GCR2        zArch Guest Control register 2
    0118  280 Signed       8 SI2GCR3        zArch Guest Control register 3
    0120  288 Signed       8 SI2GCR4        zArch Guest Control register 4
    0128  296 Signed       8 SI2GCR5 (0)    zArch Guest Control register 5
    0128  296 Bitstring    4 *
    012C  300 Bitstring    1 SI2GCR54       Guest CR5 byte 4
    012D  301 Bitstring    3 *
    0130  304 Signed       8 SI2GCR6 (0)    zArch Guest Control register 6
    0130  304 Bitstring    4 *
    0134  308 Bitstring    1 SI2GCR64       Guest CR6 byte 4
    0135  309 Bitstring    3 *
    0138  312 Signed       8 SI2GCR7        zArch Guest Control register 7
    0140  320 Signed       8 SI2GCR8 (0)    zArch Guest Control register 8
    0140  320 Bitstring    4 *
    0144  324 Bitstring    2 SI2GCR8A       Guest CR8 bytes 4+5, EAX
    0146  326 Bitstring    2 SI2GCR8M       Guest CR8 bytes 6+7, Monitor Mask
    0148  328 Signed       8 SI2GCR9 (0)    zArch Guest Control register 9
    0148  328 Bitstring    4 *
    014C  332 Bitstring    1 SI2GCR94       Guest CR9 byte 4
    014D  333 Bitstring    1 SI2GCR95       Guest CR9 byte 5
    014E  334 Bitstring    2 *
    0150  336 Signed       8 SI2GCR10       zArch Guest Control register 10
    0158  344 Signed       8 SI2GCR11       zArch Guest Control register 11
    0160  352 Signed       8 SI2GCR12 (0)   zArch Guest Control register 12
    0160  352 Bitstring    7 *
    0167  359 Bitstring    1 SI2GCRC7       Guest CR12 byte 7
    0168  360 Signed       8 SI2GCR13 (0)   zArch Guest Control register 13
    0168  360 Bitstring    7 *
    016F  367 Bitstring    1 SI2GCRD7       Guest CR13 byte 7
    0170  368 Signed       8 SI2GCR14 (0)   zArch Guest Control register 14
    0170  368 Bitstring    4 *
    0174  372 Bitstring    1 SI2GCRE4       Guest CR14 byte 4
    0175  373 Bitstring    1 SI2GCRE5       Guest CR14 byte 5
    0176  374 Bitstring    2 *
    0178  376 Signed       8 SI2GCR15       zArch Guest Control register 15
    0180  384 Bitstring  128 SI2HWRSV (0)   Reserved for IBM hardware
    0180  384 Signed       8 SI2BEAR        Breaking-Event-Address Register
    0188  392 Bitstring   24 *              Reserved for IBM hardware
    01A0  416 Signed       4 SI2FLD         Facility List Designation for
                                            STFLE
    01A4  420 Bitstring   92 *              Reserved for IBM hardware
              00000200       SI2BLEN        *-SI2BK Block size in bytes
              00000040       SI2DWLEN       ((*-SI2BK)+7)/8 Block size in
                                            doublewords
                  Redefine interception parameters for validity
                  interception.
    0056   86 Bitstring    4 SI2VIRSN (0)   Validity interception reason code
    0056   86 Bitstring    1 SI2VIWHO       "Who" recognized the validity
                                            interception? How many levels
                                            deep in interpretive execution,
                                            and what component?
    0057   87 Bitstring    1 SI2VIWHN       "When" was the condition
                                            encountered (SIE entry, exit,
                                            instruction interpretation,
                                            etc.)?
    0058   88 Signed       2 SI2VIWHY       "Why" did the validity inter-
                                            ception occur? What was the
                                            specific defect in the guest
                                            definition or host state?
    005A   90 Bitstring    2 SI2VIRSV       Reserved; zeroes stored on
                                            validity interception
                  Redefine Guest Prefix Area 128-239 (x80-xAF)
    00C0  192 Signed       4 SI2EXMSF       MSF Data Block Addr-Class 21 EXT
    00C4  196 Signed       4 SI2IEXCF (0)   External Interrupt CPU and Code
    00C4  196 Signed       2 SI2IEXCA       External Interrupt CPU address
    00C6  198 Signed       2 SI2IEXCD (0)   External Interrupt Code
    00C6  198 Bitstring    1 SI2IEXCL       EXTERNAL INTERRUPTION CLASS CODE
              00000000       EXTICL00       00 CLASS 00 EXTERNAL INTERRUPTS
                                            (INTERRUPT KEY, INTERVAL TIMER)
              00000010       EXTICL10       16 CLASS 10 EXTERNAL INTERRUPTS
                                            (TIMER, COMPARATOR, TOD SYNCH)
              00000012       EXTICL12       18 CLASS 12 EXTERNAL INTERRUPTS
                                            (MULTI-CPU SIGNALS)
              00000014       EXTICL14       20 CLASS 14 EXTERNAL INTERRUPTS
                                            (ETR INTERRUPTS)
              00000020       EXTICL20       32 Class 20 external interrupts
                                            (Time zone transition)
              00000024       EXTICL24       36 CLASS 24 EXTERNAL INTERRUPTS
                                            (SERVICE SIGNALS)
              00000026       EXTICL26       38 CLASS 26 EXTERNAL INTERRUPTS
                                            (ESA/XC INTERRUPTS)
              00000040       EXTICL40       64 CLASS 40 EXTERNAL INTERRUPTS
                                            (VMCF AND IUCV COMMUNICATION)
    00C7  199 Bitstring    1 SI2IEXCT       EXTERNAL INTERRUPTION TYPE CODE
              00000040       EXTIKEY        64 CODE X'0040' INTERRUPT KEY
              00000080       EXTITMR        128 CODE X'0080' 370 INTERVAL
                                            TIMER
              00000003       EXTITSYN       03 CODE X'1003' TOD SYNCH CHECK
              00000004       EXTICKC        04 CODE X'1004' CLOCK COMPARATOR
              00000005       EXTICPU        05 CODE X'1005' CPU TIMER
              00000000       EXTIMALF       00 CODE X'1200' MALFUNCTION ALERT
              00000001       EXTIEMGS       01 CODE X'1201' EMERGENCY SIGNAL
              00000002       EXTICALL       02 CODE X'1202' EXTERNAL CALL
              00000006       EXTIETR        06 CODE X'1406' ETR INTERRUPT
              00000004       EXTITZCH       04 CODE X'2004' Time Zone Change
              00000001       EXTISVSG       01 CODE X'2401' SERVICE SIGNAL
              00000002       EXTIPVM        02 CODE X'2402' PVM LOGICAL
                                            DEVICE
              00000003       EXTIXC         03 CODE X'2603' ESA/XC and other
                                            VM external interrupts
              00000000       EXTIIUCV       00 CODE X'4000' IUCV INTERRUPTION
              00000001       EXTIVMCF       01 CODE X'4001' VMCF INTERRUPTION
    00C8  200 Signed       2 SI2SVCIL       SVC Instruction Length Code
    00CA  202 Signed       2 SI2SVCNT       SVC Interrupt Code
    00CC  204 Signed       4 SI2IPRCD (0)   Program ILC and Interrupt Code
    00CC  204 Signed       2 SI2IPRCL       Program Instruction Length Code
    00CE  206 Signed       2 SI2IPRCC (0)   Program Interrupt Code
              00000119       PRGICROP       X'0119' Crypto Operation
                                            Exception
              00000136       PRGIADCP       X'0136' Addressing capability
              00008000       PRGIARPC       X'8000' ARITHMETIC PARTIAL
                                            COMPLETION BIT OF THE EXCEPTION
                                            EXTENSION CODE (BIT 0 OF THE
                                            PROGRAM CHECK INTERRUPT CODE)
    00CE  206 Bitstring    1 SI2IPRC0       Program interrupt code byte 0
    00CF  207 Bitstring    1 SI2IPRC1       Program interrupt code byte 1
              00000000       PRGICCLR       X'00' USED TO CLEAR PRGICODE
              00000001       PRGIOPER       X'01' OPERATION
              00000002       PRGIPRIV       X'02' PRIVILEGED OPERATION
              00000003       PRGIEXEC       X'03' EXECUTE
              00000004       PRGIPROT       X'04' PROTECTION
              00000005       PRGIADDR       X'05' ADDRESSING
              00000006       PRGISPEC       X'06' SPECIFICATION
              00000007       PRGIDATA       X'07' DATA
              00000008       PRGIFXDV       X'08' FIXED POINT OVERFLOW
              00000009       PRGIFDIV       X'09' FIXED POINT DIVIDE
              0000000A       PRGIDECO       X'0A' DECIMAL OVERFLOW
              0000000B       PRGIDDIV       X'0B' DECIMAL DIVIDE
              0000000C       PRGIEXPO       X'0C' EXPONENT OVERFLOW
              0000000D       PRGIEXPU       X'0D' EXPONENT UNDERFLOW
              0000000E       PRGISGNF       X'0E' SIGNIFICANCE
              0000000F       PRGIFPDV       X'0F' FLOATING POINT DIVIDE
              00000010       PRGISEG        X'10' SEGMENT TRANSLATION
              00000011       PRGIPAGE       X'11' PAGE TRANSLATION
              00000012       PRGITSPC       X'12' TRANSLATION SPECIFICATION
              00000013       PRGISPOP       X'13' SPECIAL OPERATION
              00000014       PRGIPPF        X'14' PSEUDO-PAGE-FAULT (SOFTWARE
                                            ONLY)
              00000015       PRGIOPND       X'15' OPERAND (370/XA ONLY)
              00000016       PRGITRAC       X'16' TRACE TABLE FULL (370/XA
                                            ONLY)
              00000017       PRGIASNT       X'17' ASN TRANSLATION
                                            SPECIFICATION EXCEPTION
              0000001A       PRGIBVOL       x'1A' Block-Volatility exception
              0000001C       PRGISPSW       X'1C' SPACE SWITCH EVENT
              0000001E       PRGIUNOP       X'1E' UNNORMALIZED OPERAND
                                            EXCEPTION
              0000001F       PRGIPCTR       X'1F' PC-TRANSLATION
                                            SPECIFICATION
              00000020       PRGIAFXT       X'20' AFX TRANSLATION
              00000021       PRGIASXT       X'21' ASX TRANSLATION
              00000022       PRGILXTR       X'22' LX TRANSLATION
              00000023       PRGIEXTR       X'23' EX TRANSLATION
              00000024       PRGIPRIA       X'24' PRIMARY AUTHORITY
              00000025       PRGISECA       X'25' SECONDARY AUTHORITY
              00000026       PRGILFXTS      X'26' LFX translation
                                            specification
              00000027       PRGILSXTS      X'27' LSX translation
                                            specification
              00000028       PRGIALTS       X'28' ALET SPECIFICATION
              00000029       PRGIALNT       X'29' ALEN TRANSLATION
              0000002A       PRGIALES       X'2A' ALE SEQUENCE
              0000002B       PRGIASTV       X'2B' ASTE VALIDITY
              0000002C       PRGIASTS       X'2C' ASTE SEQUENCE
              0000002D       PRGIEXTA       X'2D' EXTENDED AUTHORITY
              0000002E       PRGILSTES      X'2E' LSTE Sequence
              0000002F       PRGIASTI       X'2F' ASTE Instance number
              00000030       PRGISTKF       X'30' STACK FULL
              00000031       PRGISTKE       X'31' STACK EMPTY
              00000032       PRGISTKS       X'32' STACK SPECIFICATION
              00000033       PRGISTKT       X'33' STACK TYPE
              00000034       PRGISTKO       X'34' STACK OPERATION
              00000035       PRGIHIX1       X'35' Host-indicated exception,
                                            #1
              00000036       PRGIHIX2       X'36' Host-indicated exception,
                                            #2
              00000038       PRGIASCT       X'38' ASCE type
              00000039       PRGIRFT        X'39' Region first translation
              0000003A       PRGIRST        X'3A' Region second translation
              0000003B       PRGIRTT        X'3B' Region third translation
              00000040       PRGIMC         X'40' MONITOR CALL
              0000007F       PRGICMSK       X'7F' MASK TO ISOLATE PROGRAM
                                            CHECK
              00000080       PRGIPER        X'80' PROGRAM EVENT RECORDING,
                                            POSSIBLY WITH ANOTHER EXCEPTION
                                            CODE .
    00D0  208 Signed       4 SI2ITRAD (0)   390: Translation Exception ID 390
                                            & zArch: Data exception code
    00D0  208 Bitstring    1 SI2SSCTL       390: Space-switch event control
              1... ....      SI2SSON        X'80' 390: Space-sw-ctrl bit was
                                            on
    00D1  209 Bitstring    1 SI2SSCT2       390: When a space-switch event
                                            occurs, the space-switch event
                                            control bit is saved in the
                                            high-order bit of SIxSSCTL, and
                                            the remaining bits of SIxSSCTL
                                            and SIxSSCT2 are set to zero
    00D2  210 Signed       2 SI2OPASN (0)   390: Old PASN - set for space-
                                            switch event program interrupt
    00D2  210 Bitstring    1 *              Reserved for IBM hardware use
    00D3  211 Bitstring    1 SI2ADDSP (0)   Address space flag indicates
                                            where STD/ASCE value come from
              00000000       SI2PRSTD       00 STD/ASCE is obtained from CR1
              00000001       SI2ARSTD       01 STD/ASCE is obtained from ART
              00000002       SI2SESTD       02 STD/ASCE is obtained from CR7
              00000003       SI2HOSTD       03 STD/ASCE is obtained from CR13
    00D3  211 Bitstring    1 SI2ITRA3       390: Low byte of TEID (contains
                                            suppression-on-protection bits,
                                            STD ID)
    00D0  208 Signed       4 SI2FPARM (0)   Interruption parameter
    00D0  208 Bitstring    3 *
    00D3  211 Bitstring    1 SI2DXCOD       Data-exception code
    00D4  212 Signed       2 SI2IMNCL       Monitor Class
    00D6  214 Signed       2 SI2PERCL (0)   PER class code
    00D6  214 Bitstring    1 SI2PERCD       PER event code identifier
    00D7  215 Bitstring    1 SI2PERZF       PER interrupt code
              1... ....      SI2ATM31       X'80' ATMID PSW bit 31
              .1.. ....      SI2ATMID       X'40' Addressing and translation
                                            mode identification (ATMID)
                                            validity bit
              ..1. ....      SI2ATM32       X'20' ATMID PSW bit 32
              ...1 ....      SI2ATM05       X'10' ATMID PSW bit 05
              .... 1...      SI2ATM16       X'08' ATMID PSW bit 16
              .... .1..      SI2ATM17       X'04' ATMID PSW bit 17
              .... ..1.      SI2PSTD1       X'02' STD ID bit 1
              .... ...1      SI2PSTD2       X'01' STD ID bit 2
              1111 1111      SI2ATM         SI2ATM31+SI2ATMID+SI2ATM32+SI2ATM
                                            05+SI2ATM16+SI2ATM17+SI
                                            2PSTD1+SI2PSTD2 Mask to reset ATM
                                            bits
              .... ....      SI2PRSEG       X'00' STD ID bits both off. This
                                            is Primary Segment Table
                                            Designation obtained from CR-1
              .... ...1      SI2ARSEG       X'01' STD ID bits = '01'x. This
                                            is AR specified
              .... ..1.      SI2SESEG       X'02' STD ID bits = '10'x. This
                                            is Secondary Segment Table
                                            Designation obtained from CR-7
              .... ..11      SI2HOSEG       X'03' STD ID bits both on. This
                                            is Home Segment Table Designation
                                            obtained from CR-13
    00D8  216 Dbl-Word     8 SI2GPERA (0)   zArch: PER Address
    00D8  216 Signed       4 SI2GPERL (0)   zArch: Left half PER address
    00D8  216 Signed       4 SI2PERAD       390: PER Address
    00DC  220 Signed       4 SI2GPERR (0)   zArch: Right half PER address
    00DC  220 Signed       4 SI2IMNCD       390: Monitor code (guest prefix
                                            156-159 (x9C-x9F))
    00E0  224 Bitstring    1 SI2XCPAR       Exception Access Identification
              ..1. ....      PRGXCPRI       X'20' Primary-tran problem (not
                                            Access Register related)
              ...1 ....      PRGXCSEC       X'10' Secondary-tran problem (not
                                            Access Register related)
              .... 1111      PRGXCREG       X'0F' Access-register number
                                            Maximum number of real processors
              .1.. ....      MAXRPROC       64 Maximum number of real
                                            processors supported by certain
                                            internal data structures
    00E1  225 Bitstring    1 SI2PERAR       PER Access Identification
    00E2  226 Bitstring    1 SI2OPRID       Operand access identification
    00E3  227 Bitstring    1 *              Reserved for IBM hardware
    00E4  228 Signed       4 *              Reserved for IBM hardware
    00E8  232 Signed       4 SI2XCPAL (0)   Exception ALET (corresponds to
                                            prefix offset 168-171; used only
                                            by VM/ESA during simulation for
                                            ESA/XC guests)
              000000E8       SI2IOPRM       * I/O interruption parameters
                                            (redefined below)
    00E8  232 Signed       8 SI2GTRAD (0)   zArch: Translation exception ID
    00E8  232 Signed       4 SI2GTRAH       zArch: High word of TEID
    00EC  236 Signed       4 SI2GTRAL (0)   zArch: Low word of TEID
    00EC  236 Bitstring    1 SI2GSSCT       zArch: Space-switch event ctrl
              1... ....      SI2GSSON       X'80' zArch: Space-sw-ctrl bit
                                            was on
    00ED  237 Bitstring    1 SI2GSSC2       zArch: When a space-sw event
                                            occurs, the space-switch event
                                            control bit is saved in the
                                            high-order bit of SIxGSSCT, and
                                            the remaining bits of SIxGSSCT
                                            and SIxGSSC2 are set to zero
    00EE  238 Signed       2 SI2GOPAS (0)   zArch: Old PASN - set for space-
                                            switch event program interrupt
    00EE  238 Bitstring    1 *
    00EF  239 Bitstring    1 SI2GTRA7       zArch: Low byte of TEID (contains
                                            suppression-on- protection bits,
                                            ASCE ID)
                  Redefine Interruption Parameters area for
                  intercepted I/O interrpution
    00E8  232 Signed       4 SI2IOSID (0)   I/O interruption subchannel
                                            number
    00E8  232 Signed       2 SI2IOINT       I/O interruption constant 0001
    00EA  234 Signed       2 SI2IORNM       I/O interruption subchannel
                                            number
    00EC  236 Signed       4 SI2INPRM       I/O interruption parm
    00F0  240 Signed       4 SI2HIIDW (0)   Host Interruption Identification
                                            Word
    00F0  240 Bitstring    1 SI2IVISC       00VISC000
    00F1  241 Bitstring    1 SI2IZONE       ZONE
    00F2  242 Bitstring    1 SI2ISCHI       I0000000 INTERRUPT INTERLOCK CNTL
              1... ....      SI2SCHI1       X'80' INTERRUPT INTERLOCK IS ON
    00F3  243 Bitstring    1 *              RESERVED
                  Redefine Interruption Parameters area for
                  intercepted monitor-event interruption
    00E8  232 Signed       8 SI2GMNCD       zArch: Monitor code (guest prefix
                                            176-187 (xB0-xB7))
                  Redefine Interruption Parameters area for
                  Move Page partial-execution interception
    00C0  192 Address      8 SI2GDPTE (0)   Destination operand host PTE addr
    00C0  192 Signed       4 *
    00C4  196 Address      4 SI2DPTE        Dest host PTE addr, low half
    00C8  200 Address      8 SI2GSPTE (0)   Source operand host PTE address
    00C8  200 Signed       4 *
    00CC  204 Address      4 SI2SPTE        Source host PTE addr, low half
                  Redefine Interruption Parameters area for
                  QDIO Enhanced Buffer State Management (QEBSM)
    00C0  192 Bitstring    3 SI2QPEI (0)    Entire EQBSM PEI Code
    00C0  192 Bitstring    1 SI2QCODE       PEI Reason Code
    00C1  193 Bitstring    1 SI2QSBIX       Storage Block Index (SBIX)
    00C2  194 Bitstring    1 SI2QLCK        Lock Indicators
              1... ....      SI2QSD1        X'80' QIOBK/QSD is Locked
              .1.. ....      SI2QSD2        X'40' QIOBK/QSD for Format 1
                                            output queue is locked
                Redefinition of SIxGCRS for ESA/390 Guest
    0100  256 Signed       4 *              Unused for ESA/390 guest
    0104  260 Signed       4 SI2CR0 (0)     ESA/390 guest's CR0
    0104  260 Bitstring    1 SI2CR0B0       ESA/390 guest CR0 Byte 0
    0105  261 Bitstring    1 SI2CR0B1       ESA/390 guest CR0 Byte 1
    0106  262 Bitstring    1 SI2CR0B2       ESA/390 guest CR0 Byte 2
    0107  263 Bitstring    1 SI2CR0B3       ESA/390 guest CR0 Byte 2
    0108  264 Signed       4 *              Unused for ESA/390 guest
    010C  268 Signed       4 SI2CR1 (0)     ESA/390 guest's CR1
    010C  268 Bitstring    1 SI2CR1B0       ESA/390 guest CR1 Byte 0 370
                                            Guest Segment Table Length
              1... ....      CR1SSXA        X'80' 370/XA SPACE SWITCH EVENT
                                            MASK
    010D  269 Bitstring    3 SI2CR1SO (0)   370 Guest STO Value
    010D  269 Bitstring    1 SI2CR1B1       ESA/390 guest CR1 Byte 1
    010E  270 Bitstring    1 SI2CR1B2       ESA/390 guest CR1 Byte 2
    010F  271 Bitstring    1 SI2CR1B3       ESA/390 guest CR1 Byte 2
              .... ...1      CR1SS370       X'01' 370 SPACE SWITCH EVENT MASK
    0110  272 Signed       4 *              Unused for ESA/390 guest
    0114  276 Signed       4 SI2CR2 (0)     ESA/390 guest's CR2
    0114  276 Signed       2 SI2CR2IM (0)   370 GUEST CHANNEL MASK
    0114  276 Bitstring    1 SI2CR2B0       ESA/390 guest CR2 Byte 0
    0115  277 Bitstring    1 SI2CR2B1       ESA/390 guest CR2 Byte 0
    0116  278 Bitstring    1 SI2CR2B2       ESA/390 guest CR2 Byte 0
    0117  279 Bitstring    1 SI2CR2B3       ESA/390 guest CR2 Byte 0
    0118  280 Signed       4 *              Unused for ESA/390 guest
    011C  284 Signed       4 SI2CR3 (0)     ESA/390 guest's CR3
    011C  284 Signed       2 SI2CR3KM (0)   PSW-KEY mask
    011C  284 Bitstring    1 SI2CR3B0       ESA/390 guest CR3 Byte 0
    011D  285 Bitstring    1 SI2CR3B1       ESA/390 guest CR3 Byte 1
    011E  286 Signed       2 SI2CR3SA (0)   Secondary ASN
    011E  286 Bitstring    1 SI2CR3B2       ESA/390 guest CR3 Byte 2
    011F  287 Bitstring    1 SI2CR3B3       ESA/390 guest CR3 Byte 3
    0120  288 Signed       4 *              Unused for ESA/390 guest
    0124  292 Signed       4 SI2CR4 (0)     ESA/390 guest's CR4
    0124  292 Signed       2 SI2CR4AX (0)   Guest control register 4 - HWORD
                                            0 extended authorization index
                                            (AX)
    0124  292 Bitstring    1 SI2CR4B0       ESA/390 guest CR4 Byte 0
    0125  293 Bitstring    1 SI2CR4B1       ESA/390 guest CR4 Byte 1
    0126  294 Signed       2 SI2CR4PA (0)   Guest control register 4 - HWORD
                                            1 Primary address space number
                                            (PASN)
    0126  294 Bitstring    1 SI2CR4B2       ESA/390 guest CR4 Byte 2
    0127  295 Bitstring    1 SI2CR4B3       ESA/390 guest CR4 Byte 3
    0128  296 Signed       4 *              Unused for ESA/390 guest
    012C  300 Signed       4 SI2CR5 (0)     ESA/390 guest's CR5
    012C  300 Bitstring    1 SI2CR5B0       ESA/390 guest CR5 Byte 0
    012D  301 Bitstring    1 SI2CR5B1       ESA/390 guest CR5 Byte 1
    012E  302 Bitstring    1 SI2CR5B2       ESA/390 guest CR5 Byte 2
    012F  303 Bitstring    1 SI2CR5B3       ESA/390 guest CR5 Byte 3
    0130  304 Signed       4 *              Unused for ESA/390 guest
    0134  308 Signed       4 SI2CR6 (0)     ESA/390 guest's CR6
    0134  308 Bitstring    1 SI2CR6B0       ESA/390 guest CR6 Byte 0
    0135  309 Bitstring    1 SI2CR6B1       ESA/390 guest CR6 Byte 1
    0136  310 Bitstring    1 SI2CR6B2       ESA/390 guest CR6 Byte 2
    0137  311 Bitstring    1 SI2CR6B3       ESA/390 guest CR6 Byte 3
    0138  312 Signed       4 *              Unused for ESA/390 guest
    013C  316 Signed       4 SI2CR7 (0)     ESA/390 guest's CR7
    013C  316 Bitstring    1 SI2CR7B0       ESA/390 guest CR7 Byte 0
    013D  317 Bitstring    1 SI2CR7B1       ESA/390 guest CR7 Byte 1
    013E  318 Bitstring    1 SI2CR7B2       ESA/390 guest CR7 Byte 2
    013F  319 Bitstring    1 SI2CR7B3       ESA/390 guest CR7 Byte 3
    0140  320 Signed       4 *              Unused for ESA/390 guest
    0144  324 Signed       4 SI2CR8 (0)     ESA/390 guest's CR8
    0144  324 Signed       2 SI2CR8AX (0)   Extended authorization index
    0144  324 Bitstring    1 SI2CR8B0       ESA/390 guest CR8 Byte 0
    0145  325 Bitstring    1 SI2CR8B1       ESA/390 guest CR8 Byte 1
    0146  326 Signed       2 SI2CR8MM (0)   MONITOR CALL EVENT MASK
    0146  326 Bitstring    1 SI2CR8B2       ESA/390 guest CR8 Byte 2
    0147  327 Bitstring    1 SI2CR8B3       ESA/390 guest CR8 Byte 3
              ..1. ....      SI2MCL10       X'20' Monitor call class for data
                                            from guest to CP
    0148  328 Signed       4 *              Unused for ESA/390 guest
    014C  332 Signed       4 SI2CR9 (0)     ESA/390 guest's CR9
    014C  332 Bitstring    1 SI2CR9B0       ESA/390 guest CR9 Byte 0
    014D  333 Bitstring    1 SI2CR9B1       ESA/390 guest CR9 Byte 1
    014E  334 Bitstring    2 SI2CR9GM       PER General-register alteration
                                            mask
    0150  336 Signed       4 *              Unused for ESA/390 guest
    0154  340 Signed       4 SI2CR10        ESA/390 guest's CR10
    0158  344 Signed       4 *              Unused for ESA/390 guest
    015C  348 Signed       4 SI2CR11        ESA/390 guest's CR11
    0160  352 Signed       4 *              Unused for ESA/390 guest
    0164  356 Signed       4 SI2CR12 (0)    ESA/390 guest's CR12
    0164  356 Bitstring    1 SI2CRCB0       ESA/390 guest CR12 Byte 0
              1... ....      CRCBRCTL       X'80' BRANCH TRACE CONTROL BIT.
                                            WHEN ON, BALR, BASR, BASSM, BAKR
                                            AND BSG INST MAY BE TRACED BY THE
                                            HARDWARE. Note that for zArch,
                                            this bit is moved to GCRC0.0 of a
                                            64-bit CRC with a label of
                                            CRCBTCTL.
    0165  357 Bitstring    1 SI2CRCB1       ESA/390 guest CR12 Byte 1
    0166  358 Bitstring    1 SI2CRCB2       ESA/390 guest CR12 Byte 2
    0167  359 Bitstring    1 SI2CRCB3       ESA/390 guest CR12 Byte 3
    0168  360 Signed       4 *              Unused for ESA/390 guest
    016C  364 Signed       4 SI2CR13 (0)    ESA/390 guest's CR13
    016C  364 Bitstring    1 SI2CRDB0       ESA/390 guest CR13 Byte 0
    016D  365 Bitstring    1 SI2CRDB1       ESA/390 guest CR13 Byte 1
    016E  366 Bitstring    1 SI2CRDB2       ESA/390 guest CR13 Byte 2
    016F  367 Bitstring    1 SI2CRDB3       ESA/390 guest CR13 Byte 3
    0170  368 Signed       4 *              Unused for ESA/390 guest
    0174  372 Signed       4 SI2CR14 (0)    ESA/390 guest's CR14
    0174  372 Bitstring    1 SI2CREB0       ESA/390 guest CR14 Byte 0
    0175  373 Bitstring    1 SI2CREB1       ESA/390 guest CR14 Byte 1
    0176  374 Bitstring    1 SI2CREB2       ESA/390 guest CR14 Byte 2
    0177  375 Bitstring    1 SI2CREB3       ESA/390 guest CR14 Byte 3
    0178  376 Signed       4 *              Unused for ESA/390 guest
    017C  380 Signed       4 SI2CR15 (0)    ESA/390 guest's CR15 MACHINE
                                            CHECK EXTENDED LOG ADDR
    017C  380 Bitstring    1 SI2CRFB0       ESA/390 guest CR15 Byte 0
    017D  381 Bitstring    1 SI2CRFB1       ESA/390 guest CR15 Byte 1
    017E  382 Bitstring    1 SI2CRFB2       ESA/390 guest CR15 Byte 2
    017F  383 Bitstring    1 SI2CRFB3       ESA/390 guest CR15 Byte 3
                 End of Control Register redefinitions
                  End of the SIxBK

#### SI2BK Storage Layout

    *** SI2BK - SIE STATE DESCRIPTOR BLOCK (format 2)
    *
    *     +------+------+------+------+---------------------------+
    *   0 |:NTVCT|:STATC|:MODEX|:MODE |         SI2PREFX          |
    *     +------+------+------+------+---------------------------+
    *   8 |///////////////////////////|///////////////////////////|
    *     +---------------------------+---------------------------+
    *  10 |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    *  18 |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    *  20 |                       SI2RSVD1                        |
    *     +-------------------------------------------------------+
    *  28 |                       SI2CPUTM                        |
    *     +-------------------------------------------------------+
    *  30 |                        SI2CKC                         |
    *     +-------------------------------------------------------+
    *  38 |                       SI2EPOCH                        |
    *     +------+------+------+------+------+------+-------------+
    *  40 |:SVCTL|:SVC1N|:SVC2N|:SVC3N|:LCTB0|:LCTB1|  SI2ICPUA   |
    *     +------+------+------+------+------+------+------+------+
    *  48 |:ICPT0|:ICPT1|:ICPT2|:ICPT3|:ECA0 |:ECA1 |:ECA2 |:ECA3 |
    *     +------+------+------+------+------+------+------+------+
    *  50 |:ICODE|:ICFLG|  SI2IHCPU   |/////////////|:INSTO|:INSTE|
    *     +------+------+------+------+-------------+------+------+
    *  58 |:IPB0 |:IPB1 |:IPB2 |:IPB3 |         SI2IBM3           |
    *     +------+------+------+------+---------------------------+
    *  60 |:RCPB0|:ECBB0|:RCPB2|:ECBB2|         SI2ISCAA          |
    *     +------+------+------+------+-------------+-------------+
    *  68 |         SI2RSVD2          |/////////////|  SI2TODPF   |
    *     +---------------------------+------+------+------+------+
    *  70 |         SI2GISA           |SI2AZN|//////|:DVST |:SCST |
    *     +------+-------------+------+------+------+------+------+
    *  78 |SI2AZM|  SI2IBM2    |//////|///////////////////////////|
    *     +------+-------------+------+---------------------------+
    *  80 |                       SI2GMSOR                        |
    *     +-------------------------------------------------------+
    *  88 |                       SI2GMSLM                        |
    *     +------+------+------+------+------+--------------------+
    *  90 |:PSW0 |:PSW1 |:PSW2 |:PSW3 |:PSW4 |     SI2PSW57       |
    *     +------+------+------+------+------+--------------------+
    *  98 |                       SI2PSWIA                        |
    *     +-------------------------------------------------------+
    *  A0 |                       SI2GG14                         |
    *     +-------------------------------------------------------+
    *  A8 |                       SI2GG15                         |
    *     +-------------------------------------------------------+
    *  B0 |///////////////////////////////////////////////////////|
    *     +-------------+--------------------+--------------------+
    *  B8 |/////////////|      SI2XSO        |      SI2XSL        |
    *     +-------------+--------------------+--------------------+
    *  C0 |                                                       |
    *     =                       SI2UZP0                         =
    *     |                           +---------------------------+
    *     |                           |         SI2IBM1-          |
    *     +-------------+-------------+---------------------------+
    *  F8 |   -(0F4)    |   SI2IEF    |///////////////////////////|
    *     +------+------+------+------+------+------+------+------+
    * 100 |:GCR00|:GCR01|:GCR02|:GCR03|:GCR04|:GCR05|:GCR06|:GCR07|
    *     +------+------+------+------+------+------+------+------+
    * 108 |////////////////////////////////////////////////|:GCR17|
    *     +------------------------------------------------+------+
    * 110 |                       SI2GCR2                         |
    *     +-------------------------------------------------------+
    * 118 |                       SI2GCR3                         |
    *     +-------------------------------------------------------+
    * 120 |                       SI2GCR4                         |
    *     +---------------------------+------+--------------------+
    * 128 |///////////////////////////|:GCR54|////////////////////|
    *     +---------------------------+------+--------------------+
    * 130 |///////////////////////////|:GCR64|////////////////////|
    *     +---------------------------+------+--------------------+
    * 138 |                       SI2GCR7                         |
    *     +---------------------------+-------------+-------------+
    * 140 |///////////////////////////|  SI2GCR8A   |  SI2GCR8M   |
    *     +---------------------------+------+------+-------------+
    * 148 |///////////////////////////|:GCR94|:GCR95|/////////////|
    *     +---------------------------+------+------+-------------+
    * 150 |                       SI2GCR10                        |
    *     +-------------------------------------------------------+
    * 158 |                       SI2GCR11                        |
    *     +------------------------------------------------+------+
    * 160 |////////////////////////////////////////////////|:GCRC7|
    *     +------------------------------------------------+------+
    * 168 |////////////////////////////////////////////////|:GCRD7|
    *     +---------------------------+------+------+------+------+
    * 170 |///////////////////////////|:GCRE4|:GCRE5|/////////////|
    *     +---------------------------+------+------+-------------+
    * 178 |                       SI2GCR15                        |
    *     +-------------------------------------------------------+
    * 180 |                       SI2BEAR                         |
    *     +-------------------------------------------------------+
    * 188 |///////////////////////////////////////////////////////|
    *     =///////////////////////////////////////////////////////=
    *     |///////////////////////////////////////////////////////|
    *     +---------------------------+---------------------------+
    * 1A0 |          SI2FLD           |///////////////////////////|
    *     +---------------------------+///////////////////////////|
    * 1A8 |///////////////////////////////////////////////////////|
    *     =///////////////////////////////////////////////////////=
    *     |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    * 200
    *
    *** SI2BK - SIE STATE DESCRIPTOR BLOCK (format 2)

    *** Overlay for SI2IPARM in SI2BK
    *
    *                                               +------+------+
    *  50 ...                                    56 |:VIWHO|:VIWHN|
    *     +-------------+-------------+-------------+------+------+
    *  58 |  SI2VIWHY   |  SI2VIRSV   | 5C
    *     +-------------+-------------+
    *
    *** Overlay for SI2IPARM in SI2BK

    *** Overlay for SI2UZP0 in SI2BK
    *
    *     +---------------------------+-------------+------+------+
    *  C0 |         SI2EXMSF          |  SI2IEXCA   |:IEXCL|:IEXCT|
    *     +-------------+-------------+-------------+------+------+
    *  C8 |  SI2SVCIL   |  SI2SVCNT   |  SI2IPRCL   |:IPRC0|:IPRC1|
    *     +------+------+------+------+-------------+------+------+
    *  D0 |:SSCTL|:SSCT2|//////|:ITRA3| D4
    *     +------+------+------+------+
    *
    *** Overlay for SI2UZP0 in SI2BK

    *** Overlay for SI2ITRAD in SI2BK
    *
    *     +--------------------+------+-------------+------+------+
    *  D0 |////////////////////|:DXCOD|  SI2IMNCL   |:PERCD|:PERZF|
    *     +--------------------+------+-------------+------+------+
    *  D8 |         SI2PERAD          |         SI2IMNCD          |
    *     +------+------+------+------+---------------------------+
    *  E0 |:XCPAR|:PERAR|:OPRID|//////|///////////////////////////|
    *     +------+------+------+------+------+------+------+------+
    *  E8 |         SI2GTRAH          |:GSSCT|:GSSC2|//////|:GTRA7|
    *     +---------------------------+------+------+------+------+
    *  F0
    *
    *** Overlay for SI2ITRAD in SI2BK

    *** Overlay for SI2IOPRM in SI2BK
    *
    *     +-------------+-------------+---------------------------+
    *  E8 |  SI2IOINT   |  SI2IORNM   |         SI2INPRM          |
    *     +------+------+------+------+---------------------------+
    *  F0 |:IVISC|:IZONE|:ISCHI|//////| F4
    *     +------+------+------+------+
    *
    *** Overlay for SI2IOPRM in SI2BK

    *** Overlay for SI2IOPRM in SI2BK
    *
    *     +-------------------------------------------------------+
    *  E8 |                       SI2GMNCD                        |
    *     +-------------------------------------------------------+
    *  F0
    *
    *** Overlay for SI2IOPRM in SI2BK

    *** Overlay for SI2UZP0 in SI2BK
    *
    *     +---------------------------+---------------------------+
    *  C0 |///////////////////////////|         SI2DPTE           |
    *     +---------------------------+---------------------------+
    *  C8 |///////////////////////////|         SI2SPTE           |
    *     +---------------------------+---------------------------+
    *  D0
    *
    *** Overlay for SI2UZP0 in SI2BK

    *** Overlay for SI2UZP0 in SI2BK
    *
    *     +------+------+------+
    *  C0 |:QCODE|:QSBIX|:QLCK | C3
    *     +------+------+------+
    *
    *** Overlay for SI2UZP0 in SI2BK

    *** Overlay for SI2GCRS in SI2BK
    *
    *     +---------------------------+------+------+------+------+
    * 100 |///////////////////////////|:CR0B0|:CR0B1|:CR0B2|:CR0B3|
    *     +---------------------------+------+------+------+------+
    * 108 |///////////////////////////|:CR1B0|:CR1B1|:CR1B2|:CR1B3|
    *     +---------------------------+------+------+------+------+
    * 110 |///////////////////////////|:CR2B0|:CR2B1|:CR2B2|:CR2B3|
    *     +---------------------------+------+------+------+------+
    * 118 |///////////////////////////|:CR3B0|:CR3B1|:CR3B2|:CR3B3|
    *     +---------------------------+------+------+------+------+
    * 120 |///////////////////////////|:CR4B0|:CR4B1|:CR4B2|:CR4B3|
    *     +---------------------------+------+------+------+------+
    * 128 |///////////////////////////|:CR5B0|:CR5B1|:CR5B2|:CR5B3|
    *     +---------------------------+------+------+------+------+
    * 130 |///////////////////////////|:CR6B0|:CR6B1|:CR6B2|:CR6B3|
    *     +---------------------------+------+------+------+------+
    * 138 |///////////////////////////|:CR7B0|:CR7B1|:CR7B2|:CR7B3|
    *     +---------------------------+------+------+------+------+
    * 140 |///////////////////////////|:CR8B0|:CR8B1|:CR8B2|:CR8B3|
    *     +---------------------------+------+------+------+------+
    * 148 |///////////////////////////|:CR9B0|:CR9B1|  SI2CR9GM   |
    *     +---------------------------+------+------+-------------+
    * 150 |///////////////////////////|         SI2CR10           |
    *     +---------------------------+---------------------------+
    * 158 |///////////////////////////|         SI2CR11           |
    *     +---------------------------+------+------+------+------+
    * 160 |///////////////////////////|:CRCB0|:CRCB1|:CRCB2|:CRCB3|
    *     +---------------------------+------+------+------+------+
    * 168 |///////////////////////////|:CRDB0|:CRDB1|:CRDB2|:CRDB3|
    *     +---------------------------+------+------+------+------+
    * 170 |///////////////////////////|:CREB0|:CREB1|:CREB2|:CREB3|
    *     +---------------------------+------+------+------+------+
    * 178 |///////////////////////////|:CRFB0|:CRFB1|:CRFB2|:CRFB3|
    *     +---------------------------+------+------+------+------+
    * 180
    *
    *** Overlay for SI2GCRS in SI2BK

#### SI2BK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    ALDMAX         0094 SI2PSW4B
    ALDMIN         0094 80
    ALD0ALLM       0094 7F
    ALD0ALNS       0094 03
    ALD0ALOM       0094 SI2PSW4B
    ALD0ALUN       0094 80
    ALD0ALUS       0094 07
    ASWASTEOM      0094 SI2PSW4B
    CRCBRCTL       0164 80
    CR1SSXA        010C 80
    CR1SS370       010F 01
    CSWATTN        0076 80
    CSWBUSY        0076 10
    CSWCBS         0076 70
    CSWCCC         0077 04
    CSWCDC         0077 08
    CSWCE          0076 08
    CSWCEDC        0076 2C
    CSWCEDE        0076 0C
    CSWCHC         0077 01
    CSWCUE         0076 20
    CSWDE          0076 04
    CSWDEA         0076 84
    CSWHCE         0077 0E
    CSWIFCC        0077 02
    CSWIL          0077 40
    CSWPCE         0077 31
    CSWPCI         0077 80
    CSWPRG         0077 20
    CSWPROT        0077 10
    CSWSM          0076 40
    CSWSMBSY       0076 50
    CSWUC          0076 02
    CSWUE          0076 01
    DATBXM         0094 SI2PSW4B
    DATPXM         0094 SI2PSW4B
    DATSXM         0094 SI2PSW4B
    DUWDUCTOM      0094 SI2PSW4B
    EXTICALL       00C7 00000002
    EXTICKC        00C7 00000004
    EXTICL00       00C6 00000000
    EXTICL10       00C6 00000010
    EXTICL12       00C6 00000012
    EXTICL14       00C6 00000014
    EXTICL20       00C6 00000020
    EXTICL24       00C6 00000024
    EXTICL26       00C6 00000026
    EXTICL40       00C6 00000040
    EXTICPU        00C7 00000005
    EXTIEMGS       00C7 00000001
    EXTIETR        00C7 00000006
    EXTIIUCV       00C7 00000000
    EXTIKEY        00C7 00000040
    EXTIMALF       00C7 00000000
    EXTIPVM        00C7 00000002
    EXTISVSG       00C7 00000001
    EXTITMR        00C7 00000080
    EXTITSYN       00C7 00000003
    EXTITZCH       00C7 00000004
    EXTIVMCF       00C7 00000001
    EXTIXC         00C7 00000003
    KEYACC         0094 F0
    KEYACCF        0094 F8
    KEYCHG         0094 02
    KEYFETCH       0094 08
    KEYISOL        0094 FE
    KEYOPEN        0094 09
    KEYRC          0094 06
    KEYREF         0094 04
    MAXRPROC       00E0 40
    MAXVSTOR       0094 SI2PSW4B
    PRGIADCP       00CE 00000136
    PRGIADDR       00CF 00000005
    PRGIAFXT       00CF 00000020
    PRGIALES       00CF 0000002A
    PRGIALNT       00CF 00000029
    PRGIALTS       00CF 00000028
    PRGIARPC       00CE 00008000
    PRGIASCT       00CF 00000038
    PRGIASNT       00CF 00000017
    PRGIASTI       00CF 0000002F
    PRGIASTS       00CF 0000002C
    PRGIASTV       00CF 0000002B
    PRGIASXT       00CF 00000021
    PRGIBVOL       00CF 0000001A
    PRGICCLR       00CF 00000000
    PRGICMSK       00CF 0000007F
    PRGICROP       00CE 00000119
    PRGIDATA       00CF 00000007
    PRGIDDIV       00CF 0000000B
    PRGIDECO       00CF 0000000A
    PRGIEXEC       00CF 00000003
    PRGIEXPO       00CF 0000000C
    PRGIEXPU       00CF 0000000D
    PRGIEXTA       00CF 0000002D
    PRGIEXTR       00CF 00000023
    PRGIFDIV       00CF 00000009
    PRGIFPDV       00CF 0000000F
    PRGIFXDV       00CF 00000008
    PRGIHIX1       00CF 00000035
    PRGIHIX2       00CF 00000036
    PRGILFXTS      00CF 00000026
    PRGILSTES      00CF 0000002E
    PRGILSXTS      00CF 00000027
    PRGILXTR       00CF 00000022
    PRGIMC         00CF 00000040
    PRGIOPER       00CF 00000001
    PRGIOPND       00CF 00000015
    PRGIPAGE       00CF 00000011
    PRGIPCTR       00CF 0000001F
    PRGIPER        00CF 00000080
    PRGIPPF        00CF 00000014
    PRGIPRIA       00CF 00000024
    PRGIPRIV       00CF 00000002
    PRGIPROT       00CF 00000004
    PRGIRFT        00CF 00000039
    PRGIRST        00CF 0000003A
    PRGIRTT        00CF 0000003B
    PRGISECA       00CF 00000025
    PRGISEG        00CF 00000010
    PRGISGNF       00CF 0000000E
    PRGISPEC       00CF 00000006
    PRGISPOP       00CF 00000013
    PRGISPSW       00CF 0000001C
    PRGISTKE       00CF 00000031
    PRGISTKF       00CF 00000030
    PRGISTKO       00CF 00000034
    PRGISTKS       00CF 00000032
    PRGISTKT       00CF 00000033
    PRGITRAC       00CF 00000016
    PRGITSPC       00CF 00000012
    PRGIUNOP       00CF 0000001E
    PRGXCPRI       00E0 20
    PRGXCREG       00E0 0F
    PRGXCSEC       00E0 10
    PSWAMODE       0092 40
    PSWASMSK       0092 C0
    PSWBA          0094 80
    PSWCONB1       0094 10
    PSWCONB2       0094 20
    PSWCOND        0092 30
    PSWCONDB       0094 30
    PSWCOND1       0092 10
    PSWCOND2       0092 20
    PSWDECO        0092 04
    PSWDECOB       0094 04
    PSWEA          0093 01
    PSWECMD        0091 08
    PSWEXSM        0090 01
    PSWEXSMB       0090 01
    PSWEXUN        0092 02
    PSWEXUNB       0094 02
    PSWFIXO        0092 08
    PSWFIXOB       0094 08
    PSWHIADR       0094 7F
    PSWHMODE       0092 C0
    PSWILCBC       0094 C0
    PSWILCB2       0094 40
    PSWILCB4       0094 80
    PSWIOMSK       0090 FC
    PSWIOSM        0090 02
    PSWIOSMB       0090 02
    PSWKEY         0091 F0
    PSWMAPPD       0091 01
    PSWMCHK        0091 04
    PSWPERA        0090 40
    PSWPMODE       0092 00
    PSWPMSK        0092 0F
    PSWPMSKB       0094 0F
    PSWPROB        0091 01
    PSWSIGN        0092 01
    PSWSIGNB       0094 01
    PSWSMODE       0092 80
    PSWTRAN        0090 04
    PSWWAIT        0091 02
    PSW31AMF       0094 00
    PSW31BT        0094 80
    SACAR          0094 SI2PSW4B
    SACHOME        0094 SI2PSW4B
    SACPRIM        0094 00
    SACSECO        0094 SI2PSW4B
    SAM31          0094 1F
    SAM64          0094 40
    SIGPCPU        0094 0C
    SIGPEMER       0094 03
    SIGPEXTC       0094 02
    SIGPICPU       0094 0B
    SIGPIPR        0094 07
    SIGPPR         0094 08
    SIGPRSTR       0094 06
    SIGPSARC       0094 12
    SIGPSENS       0094 01
    SIGPSPFX       0094 0D
    SIGPSSTS       0094 0E
    SIGPSSTT       0094 09
    SIGPSTOP       0094 05
    SIGPSTRT       0094 04
    SIGPSXST       0094 11
    SI2ADDSP       00D3
    SI2ARSEG       00D7 01
    SI2ARSTD       00D3 00000001
    SI2ATM         00D7 FF
    SI2ATMID       00D7 40
    SI2ATM05       00D7 10
    SI2ATM16       00D7 08
    SI2ATM17       00D7 04
    SI2ATM31       00D7 80
    SI2ATM32       00D7 20
    SI2AZM         0078
    SI2AZN         0074
    SI2BEAR        0180
    SI2BLEN        01A4 00000200
    SI2CKC         0030
    SI2CPUTM       0028
    SI2CPUTN       0028 80
    SI2CPUT0       0028
    SI2CRCB0       0164
    SI2CRCB1       0165
    SI2CRCB2       0166
    SI2CRCB3       0167
    SI2CRDB0       016C
    SI2CRDB1       016D
    SI2CRDB2       016E
    SI2CRDB3       016F
    SI2CREB0       0174
    SI2CREB1       0175
    SI2CREB2       0176
    SI2CREB3       0177
    SI2CRFB0       017C
    SI2CRFB1       017D
    SI2CRFB2       017E
    SI2CRFB3       017F
    SI2CR0         0104
    SI2CR0B0       0104
    SI2CR0B1       0105
    SI2CR0B2       0106
    SI2CR0B3       0107
    SI2CR1         010C
    SI2CR1B0       010C
    SI2CR1B1       010D
    SI2CR1B2       010E
    SI2CR1B3       010F
    SI2CR1SO       010D
    SI2CR10        0154
    SI2CR11        015C
    SI2CR12        0164
    SI2CR13        016C
    SI2CR14        0174
    SI2CR15        017C
    SI2CR2         0114
    SI2CR2B0       0114
    SI2CR2B1       0115
    SI2CR2B2       0116
    SI2CR2B3       0117
    SI2CR2IM       0114
    SI2CR3         011C
    SI2CR3B0       011C
    SI2CR3B1       011D
    SI2CR3B2       011E
    SI2CR3B3       011F
    SI2CR3KM       011C
    SI2CR3SA       011E
    SI2CR4         0124
    SI2CR4AX       0124
    SI2CR4B0       0124
    SI2CR4B1       0125
    SI2CR4B2       0126
    SI2CR4B3       0127
    SI2CR4PA       0126
    SI2CR5         012C
    SI2CR5B0       012C
    SI2CR5B1       012D
    SI2CR5B2       012E
    SI2CR5B3       012F
    SI2CR6         0134
    SI2CR6B0       0134
    SI2CR6B1       0135
    SI2CR6B2       0136
    SI2CR6B3       0137
    SI2CR7         013C
    SI2CR7B0       013C
    SI2CR7B1       013D
    SI2CR7B2       013E
    SI2CR7B3       013F
    SI2CR8         0144
    SI2CR8AX       0144
    SI2CR8B0       0144
    SI2CR8B1       0145
    SI2CR8B2       0146
    SI2CR8B3       0147
    SI2CR8MM       0146
    SI2CR9         014C
    SI2CR9B0       014C
    SI2CR9B1       014D
    SI2CR9GM       014E
    SI2DMRI        0061 40
    SI2DPTE        00C4
    SI2DVSCS       0076
    SI2DVST        0076
    SI2DWLEN       01A4 00000040
    SI2DXCOD       00D3
    SI2ECA         004C
    SI2ECALT       004C 08
    SI2ECA0        004C
    SI2ECA1        004D
    SI2ECA2        004E
    SI2ECA3        004F
    SI2ECB         0061
    SI2ECBB0       0061
    SI2ECBB1       0062
    SI2ECBB2       0063
    SI2ECEXT       004C 80
    SI2ECINT       004C 40
    SI2ECIO2       004C 04
    SI2ECMVP       004C 01
    SI2ECSGP       004C 10
    SI2ECWAI       004C 20
    SI2ENDOP       0050 00000000
    SI2EPOCH       0038
    SI2ESAME       0002 08
    SI2ESB         00BA
    SI2EXMSF       00C0
    SI2EXRUN       0001 01
    SI2EXTMR       0001 02
    SI2FLD         01A0
    SI2FPARM       00D0
    SI2GCRC7       0167
    SI2GCRD7       016F
    SI2GCRE4       0174
    SI2GCRE5       0175
    SI2GCRS        0100
    SI2GCR0        0100
    SI2GCR00       0100
    SI2GCR01       0101
    SI2GCR02       0102
    SI2GCR03       0103
    SI2GCR04       0104
    SI2GCR05       0105
    SI2GCR06       0106
    SI2GCR07       0107
    SI2GCR1        0108
    SI2GCR10       0150
    SI2GCR11       0158
    SI2GCR12       0160
    SI2GCR13       0168
    SI2GCR14       0170
    SI2GCR15       0178
    SI2GCR17       010F
    SI2GCR2        0110
    SI2GCR3        0118
    SI2GCR4        0120
    SI2GCR5        0128
    SI2GCR54       012C
    SI2GCR6        0130
    SI2GCR64       0134
    SI2GCR7        0138
    SI2GCR8        0140
    SI2GCR8A       0144
    SI2GCR8M       0146
    SI2GCR9        0148
    SI2GCR94       014C
    SI2GCR95       014D
    SI2GDPTE       00C0
    SI2GG14        00A0
    SI2GG145       00A0
    SI2GG15        00A8
    SI2GISA        0070
    SI2GMNCD       00E8
    SI2GMSLM       0088
    SI2GMSMKH      0088 00FFFFFF
    SI2GMSMKL      0088 00F00000
    SI2GMSOR       0080
    SI2GOPAS       00EE
    SI2GPE         0003 01
    SI2GPERA       00D8
    SI2GPERL       00D8
    SI2GPERR       00DC
    SI2GPSW        0090
    SI2GSPTE       00C8
    SI2GSSCT       00EC
    SI2GSSC2       00ED
    SI2GSSON       00EC 80
    SI2GTRAD       00E8
    SI2GTRAH       00E8
    SI2GTRAL       00EC
    SI2GTRA7       00EF
    SI2HIIDW       00F0
    SI2HOSEG       00D7 03
    SI2HOSTD       00D3 00000003
    SI2HWRSV       0180
    SI2IBM1        00F4
    SI2IBM2        0079
    SI2IBM3        005C
    SI2ICALT       0050 00000030
    SI2ICBAK       004B 04
    SI2ICBOT       0050 0000000C
    SI2ICBSA       0049 08
    SI2ICEX        0051 01
    SI2ICFLG       0051
    SI2ICIF        0051 02
    SI2ICION       0050 00000040
    SI2ICIOR       0050 0000003C
    SI2ICIPT       0048 01
    SI2ICISK       004A 40
    SI2ICLPS       0049 40
    SI2ICLSP       004A 01
    SI2ICNTC       0050 00000004
    SI2ICODE       0050
    SI2ICOUO       0050 0000002C
    SI2ICPC        004A 08
    SI2ICPEX       0050 00000010
    SI2ICPG        004B 02
    SI2ICPIO       0050 00000018
    SI2ICPIX       0050 00000038
    SI2ICPNT       0050 00000008
    SI2ICPOP       0048 80
    SI2ICPR        004B 08
    SI2ICPRG       0048 20
    SI2ICPRO       0048 40
    SI2ICPT        004A 04
    SI2ICPTL       0049 20
    SI2ICPT0       0048
    SI2ICPT1       0049
    SI2ICPT2       004A
    SI2ICPT3       004B
    SI2ICPUA       0046
    SI2ICRRB       004A 10
    SI2ICRUN       0050 00000044
    SI2ICSCK       004B 20
    SI2ICSPT       004B 40
    SI2ICSSK       004A 20
    SI2ICSSM       0049 10
    SI2ICSTC       0049 04
    SI2ICSTK       004A 80
    SI2ICSTN       0049 02
    SI2ICSTO       0049 01
    SI2ICSTP       0050 00000028
    SI2ICTLS       0048
    SI2ICTMR       0050 00000048
    SI2ICTPT       004A 02
    SI2ICVAL       0050 00000020
    SI2ICWT        0050 0000001C
    SI2ICXNT       0050 00000014
    SI2IEF         00FA
    SI2IEXCA       00C4
    SI2IEXCD       00C6
    SI2IEXCF       00C4
    SI2IEXCL       00C6
    SI2IEXCT       00C7
    SI2IHCPU       0052
    SI2IMISC       0050 00000024
    SI2IMLT4       0050 00000003
    SI2IMNCD       00DC
    SI2IMNCL       00D4
    SI2INPRM       00EC
    SI2INST        0056
    SI2INSTE       0057
    SI2INSTO       0056
    SI2INTWD       0000
    SI2IOINT       00E8
    SI2IOPCT       0074
    SI2IOPRM       00E8 000000E8
    SI2IORNM       00EA
    SI2IOSID       00E8
    SI2IPA         0056
    SI2IPARM       0056
    SI2IPA0        0056 00000056
    SI2IPA1        0057 57
    SI2IPB         0058
    SI2IPBH0       0058
    SI2IPBH1       005A
    SI2IPB0        0058
    SI2IPB1        0059
    SI2IPB2        005A
    SI2IPB3        005B
    SI2IPEXT       0000 01
    SI2IPRCC       00CE
    SI2IPRCD       00CC
    SI2IPRCL       00CC
    SI2IPRC0       00CE
    SI2IPRC1       00CF
    SI2IPSTP       0000 04
    SI2IPVIO       0000 02
    SI2IPWAI       0000 10
    SI2IPXTC       0000 08
    SI2ISCAA       0064
    SI2ISCHI       00F2
    SI2ITRAD       00D0
    SI2ITRA3       00D3
    SI2IVISC       00F0
    SI2IZONE       00F1
    SI2LCTB0       0044
    SI2LCTB1       0045
    SI2LCTLA       0045 20
    SI2LCTLB       0045 10
    SI2LCTLC       0045 08
    SI2LCTLD       0045 04
    SI2LCTLE       0045 02
    SI2LCTLF       0045 01
    SI2LCTLS       0044
    SI2LCTL0       0044 80
    SI2LCTL1       0044 40
    SI2LCTL2       0044 20
    SI2LCTL3       0044 10
    SI2LCTL4       0044 08
    SI2LCTL5       0044 04
    SI2LCTL6       0044 02
    SI2LCTL7       0044 01
    SI2LCTL8       0045 80
    SI2LCTL9       0045 40
    SI2MCDS        0002 01
    SI2MCL10       0147 20
    SI2MODE        0003
    SI2MODEX       0002
    SI2NTVCT       0000
    SI2OPASN       00D2
    SI2OPRID       00E2
    SI2PERAD       00D8
    SI2PERAR       00E1
    SI2PERCD       00D6
    SI2PERCL       00D6
    SI2PERZF       00D7
    SI2PREFX       0004
    SI2PRSEG       00D7 00
    SI2PRSTD       00D3 00000000
    SI2PSTD1       00D7 02
    SI2PSTD2       00D7 01
    SI2PSW         0090
    SI2PSWIA       0098
    SI2PSW0        0090
    SI2PSW0B       0090
    SI2PSW0F       0090
    SI2PSW1        0091
    SI2PSW2        0092
    SI2PSW2H       0092
    SI2PSW3        0093
    SI2PSW4        0094
    SI2PSW4B       0094
    SI2PSW4F       0094
    SI2PSW57       0095
    SI2QCODE       00C0
    SI2QEBSM       0061 80
    SI2QLCK        00C2
    SI2QPEI        00C0
    SI2QSBIX       00C1
    SI2QSD1        00C2 80
    SI2QSD2        00C2 40
    SI2RCP         0060
    SI2RCPBY       0062 10
    SI2RCPB0       0060
    SI2RCPB2       0062
    SI2RRF         0002 80
    SI2RSCB        0001 40
    SI2RSVD1       0020
    SI2RSVD2       0068
    SI2RSVD3       0078
    SI2RUNNING     0001 80
    SI2SCHI1       00F2 80
    SI2SCST        0077
    SI2SDSC        0000
    SI2SESEG       00D7 02
    SI2SESTD       00D3 00000002
    SI2SIGA        004F 04
    SI2SKAIP       0060 40
    SI2SPTE        00CC
    SI2SSCTL       00D0
    SI2SSCT2       00D1
    SI2SSON        00D0 80
    SI2STATC       0001
    SI2SVCIL       00C8
    SI2SVCNN       0040 80
    SI2SVCNT       00CA
    SI2SVCTL       0040
    SI2SVC1C       0040 40
    SI2SVC1N       0041
    SI2SVC2C       0040 20
    SI2SVC2N       0042
    SI2SVC3C       0040 10
    SI2SVC3N       0043
    SI2TODPF       006E
    SI2TODPR       006C
    SI2UZP0        00C0
    SI2VIRSN       0056
    SI2VIRSV       005A
    SI2VIWHN       0057
    SI2VIWHO       0056
    SI2VIWHY       0058
    SI2VR          0003 08
    SI2XCPAL       00E8
    SI2XCPAR       00E0
    SI2XSL         00BD
    SI2XSO         00BA
    SI22NDVR       0002 20
    SI22NDVV       0002 40

This information is based on z/VM V5R2.0. Last updated on 12 Apr 2006 at 17:24:30 EDT.
Copyright IBM Corporation, 1990, 2005