NAME       : IPLREC
 DESCRIPTION: System Initialization (IPL) record
 DSECT      : IPLREC
 FUNCTION   : Maps the system initialization record created
              during IPL and collected by SVC 76 processing.
 LOCATED BY : N/A
 CREATED BY : HCPIPL
 DELETED BY : The EREP record recording process.
 RELOCATION CONSIDERATIONS : None

 IPLREC DSECT
Top of page

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      IPLREC         System Initialization (IPL) record
       Type of record
0000    0 Bitstring    1 IPLKEY1        Class/Source(type of record)
          00000050       IPLIND         X'50' IPLIND IPL record
       System and Release level of issuing system.
0001    1 Bitstring    1 IPLKEY2        System/Release Level of issuing
                                        system
          00000080       IPLMVS         X'80' IPLMVS System is OS/VS2 or
                                        a later MVS system
          00000060       IPLVM          X'60' IPLVM System is CP67,
                                        VM/370 or a later VM system
          00000040       IPLOSVS1       X'40' IPLOSVS1 System is OS/VS1
          00000020       IPLDOS         X'20' IPLDOS System is DOS (VSE)
          00000000       IPLOS360       X'00' IPLOS360 System is OS/360
                                        (X'00'-X'1F') Release level
       Miscellaneous switches.
0002    2 Bitstring    1 IPLSMS         Record-independent switches
          1... ....      IPLMORE        X'80' IPLMORE More records follow
                                        If this is the last record, this
                                        bit is zero.
          .1.. ....      IPLWTOD        X'40' IPLWTOD IBM System/370
                                        time-of-day clock instruction
                                        issued. If this bit is zero, an
                                        IBM System/360 TOD clock
                                        instruction was issued. This is
                                        used in conjunction with IPLDATE
                                        and IPLTIME.
          ..1. ....      IPLTRUNC       X'20' IPLTRUNC Record truncated.
          ...1 ....      IPLXA          X'10' IPLXA 370-XA mode record.
          .... 1...      IPLTMAC        X'08' IPLTMAC TIME macro used
                                        (OS/VS) If zero, the time is in
                                        timer units (VSE).
       Operating system- and processor-specific information
0003    3 Bitstring    2 *              Reserved.
0005    5 Bitstring    1 IPLINCRL       Incremental release number of
                                        operating system
0006    6 Bitstring    2 *              Reserved.
0008    8 Dbl-Word     8 IPLDT (0)      System date and time when record
                                        was created.
0008    8 Signed       4 IPLDATE        System date of failure.
000C   12 Signed       4 IPLTIME        System time of failure
0010   16 Dbl-Word     8 IPLCPUID (0)   CPU identification
0010   16 Bitstring    1 IPLVER         Machine version code
          .... ...1      IPLVERII       X'01' IPLVERII Version II CPUs.
                                        If this bit is zero, version I
                                        CPUs.
0011   17 Bitstring    3 IPLSER         CPU serial number
0014   20 Bitstring    2 IPLMOD         CPU machine model number
0016   22 Bitstring    2 IPLCEL         Maximum length of machine- (CPU-)
                                        dependent machine-check extended
                                        logout area.
       Restart- and IPL-specific information
0018   24 Bitstring    1 IPLSYSID       Device type or program that
                                        caused restart.
          00000091       IPLPP          X'91' IPLPP IBM Programming
                                        Products
          00000090       IPLSCP         X'90' IPLSCP IBM System Control
                                        Program
          00000080       IPLGRAF        X'80' IPLGRAF
                                        Graphics/Display/Audio
          00000070       IPLTP          X'70' IPLTP Teleprocessing
          00000060       IPLOCR         X'60' IPLOCR MICR/OCR
          00000050       IPLUR          X'50' IPLUR Card/Print
          00000040       IPLTAPE        X'40' IPLTAPE Tape
          00000030       IPLOTHER       X'30' IPLOTHER Other (All devices
                                        other than those included under
                                        other subsystem IDs
          00000020       IPLDASD        X'20' IPLDASD Direct Access
                                        (DASD)
          00000010       IPLCPU         X'10' IPLCPU Processor (CPU,
                                        channels, storage units, operator
                                        consoles)
          00000000       IPLNULL        X'00' IPLNULL Subsystem is
                                        unknown or subsystem code is not
                                        required by reason code.
0019   25 Bitstring    3 *              Not used for IPL record.
001C   28 Character    2 IPLREAS        Alphameric code representing the
                                        reason for IPL.
      Reason codes
          0000D5D4       IPLNORM        C'NM' Normal system
                                        initialization
          0000C9C5       IPLNOCE        C'IE' IBM hardware/programming
                                        problem. CE/PSR not reqd.
          0000C9D4       IPLCEREQ       C'IM' IBM hardware/programming
                                        problem. CE/PSR required.
          0000D4C5       IPLMEDIA       C'ME' IBM hardware unit failed
                                        because of faulty media.
          0000E4D5       IPLUNKWN       C'UN' Undetermined hardware or
                                        software failure.
          0000D6D7       IPLOPER        C'OP' Operator error or
                                        procedural problem.
          0000E4D7       IPLUSER        C'UP' A program other than an
                                        IBM- supplied SCP or PP failed
                                        and caused a restart.
          0000C5D5       IPLENV         C'EN' Environmental problem
                                        (power failure, air conditioning,
                                        etc.)
          0000C3C5       IPLCEPSR       C'CE' System restarted at CE/PSR
                                        request.
          0000C4C6       IPLDFLT        C'DF' Default
001E   30 Bitstring    2 IPLCHNM        Channel map.
0020   32 Dbl-Word     8 IPLCHAN        Channel type assignment at IPL.
                                        (Not used for 370-XA.)
0028   40 Signed       4 IPLHADDR       Address of the last valid byte of
                                        storage found at IPL time (MVS
                                        only).
002C   44 Signed       4 IPLSDATE       Time-stamp date (MVS only).
0030   48 Signed       4 IPLSTIME       Time-stamp time (MVS only).
        Record size in bytes and doublewords.
          00000034       IPLBLEN        *-IPLREC IPLREC size in bytes
          00000007       IPLSIZE        (*-IPLREC+7)/8 IPLREC size in
                                        doublewords

 
*** IPLREC - System Initialization (IPL) record
*
*     +------+------+------+-------------+------+-------------+
*   0 |:KEY1 |:KEY2 |IPLSMS|/////////////|:INCRL|/////////////|
*     +------+------+------+------+------+------+-------------+
*   8 |         IPLDATE           |         IPLTIME           |
*     +------+--------------------+-------------+-------------+
*  10 |IPLVER|      IPLSER        |   IPLMOD    |   IPLCEL    |
*     +------+--------------------+-------------+-------------+
*  18 |:SYSID|////////////////////|  IPLREAS    |  IPLCHNM    |
*     +------+--------------------+-------------+-------------+
*  20 |                       IPLCHAN                         |
*     +---------------------------+---------------------------+
*  28 |         IPLHADDR          |         IPLSDATE          |
*     +---------------------------+---------------------------+
*  30 |         IPLSTIME          | 34
*     +---------------------------+
*
*** IPLREC - System Initialization (IPL) record

 
Symbol         Dspl Value
-------------- ---- -----
IPLBLEN        0030 00000034
IPLCEL         0016
IPLCEPSR       001C 0000C3C5
IPLCEREQ       001C 0000C9D4
IPLCHAN        0020
IPLCHNM        001E
IPLCPU         0018 00000010
IPLCPUID       0010
IPLDASD        0018 00000020
IPLDATE        0008
IPLDFLT        001C 0000C4C6
IPLDOS         0001 00000020
IPLDT          0008
IPLENV         001C 0000C5D5
IPLGRAF        0018 00000080
IPLHADDR       0028
IPLINCRL       0005
IPLIND         0000 00000050
IPLKEY1        0000
IPLKEY2        0001
IPLMEDIA       001C 0000D4C5
IPLMOD         0014
IPLMORE        0002 80
IPLMVS         0001 00000080
IPLNOCE        001C 0000C9C5
IPLNORM        001C 0000D5D4
IPLNULL        0018 00000000
IPLOCR         0018 00000060
IPLOPER        001C 0000D6D7
IPLOSVS1       0001 00000040
IPLOS360       0001 00000000
IPLOTHER       0018 00000030
IPLPP          0018 00000091
IPLREAS        001C
IPLSCP         0018 00000090
IPLSDATE       002C
IPLSER         0011
IPLSIZE        0030 00000007
IPLSMS         0002
IPLSTIME       0030
IPLSYSID       0018
IPLTAPE        0018 00000040
IPLTIME        000C
IPLTMAC        0002 08
IPLTP          0018 00000070
IPLTRUNC       0002 20
IPLUNKWN       001C 0000E4D5
IPLUR          0018 00000050
IPLUSER        001C 0000E4D7
IPLVER         0010
IPLVERII       0010 01
IPLVM          0001 00000060
IPLWTOD        0002 40
IPLXA          0002 10