Programming Interface Information: The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM.

#### MRIODATS

Prolog
Control Block Contents
Cross Reference

#### MRIODATS Prolog

####

####

     DSECT NAME - IODATS
     FUNCTION - Map a Monitor record.
     LOCATED BY -
            Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRIODATS
     DESCRIPTIVE NAME - Monitor Event Record
                        Domain 6 - I/O Domain
                        Record 9 - Attach Shared Device
     DESCRIPTION - Indicates that a Shared device has been attached
                   to the system.

    MRIODATS Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)          Description

      0   0  Structure   44  IODATS              Start of monitor record
      0   0  Character    0  IODATS_MRHDR        Record header. See MRRECHDR for
                                                 details.
      0   0  Character   20  MRHDR
      0   0  Unsigned     2  MRHDRLEN            record length in bytes
      2   2  Unsigned     2  MRHDRZER            field of zeros
      4   4  Unsigned     1  MRHDRDM             domain identifier
      5   5  Unsigned     1  *
      6   6  Unsigned     2  MRHDRRC             record identifier
      8   8  Character    8  MRHDRTOD            Time at which this record was
                                                 built. In time-of-day (TOD) clock
                                                 format. See IBM System 370 XA
                                                 Principle of Operation for
                                                 explanation of format.
     16  10  Character    4  *
     20  14  Character    0  MRHDR_END           End of header
     20  14  Bitstring    1  IODATS_RDEVTYPE     Device type code. Unique for
                                                 each device within the class in
                                                 IODATS_RDEVCLAS.
     21  15  Bitstring    1  IODATS_RDEVCLAS     Device class code. Unique for
                                                 each class.
     22  16  Unsigned     2  IODATS_RDEVDVID     Device type number in packed
                                                 decimal. See IODATS_RDEVDVIV for
                                                 its source.
     24  18  Bitstring    1  IODATS_CALMODLN     Device model identifier. See
                                                 IODATS_RDEVDVIV flag for its
                                                 source.
     25  19  Bitstring    1  IODATS_RDEVLPM      Logical path mask
     26  1A  Unsigned     2  IODATS_RDEVDEV      Device number in packed decimal
     28  1C  Unsigned     4  IODATS_RDEVSID      Host subchannel id
     32  20  Character    8  IODATS_RDEVCHPS     Eight channel path ids for this
                                                 device
     40  28  Unsigned     2  IODATS_RDEVCUID     control unit id in packed
                                                 decimal. Applicable only when
                                                 IODATS_RDEVCUIV = on.
     42  2A  Unsigned     1  IODATS_RDEVCUMN     Control unit model identifier.
                                                 Applicable only when
                                                 IODATS_RDEVCUIV = on.
     43  2B  Bitstring    1  IODATS_CALFLAGS     Flag byte
              1... ....      IODATS_RDEVDVIV     OFF = device model number (in
                                                 IODATS_RDEVDVID) and model
                                                 identifier (in IODATS_CALMODLN)
                                                 were provided by user through the
                                                 RDEVICE macro or device sensing at
                                                 IPL time. ON = device type number
                                                 and model identifier were provided
                                                 by the device at device
                                                 initialization time.
              .1.. ....      IODATS_RDEVCUIV     When on, IODATS_RDEVCUID and
                                                 IODATS_RDEVCUMN contain valid
                                                 control unit information
              ..1. ....      *
              ...1 ....      *
              .... 1...      *
              .... .1..      *
              .... ..1.      *
              .... ...1      *
     44  2C  Character    0  IODATS_END

    MRIODATS Cross Reference

                          Hex           Hex
    Name                 Offset Length Value

    IODATS                  0     44
    IODATS_CALFLAGS        2B      1
    IODATS_CALMODLN        18      1
    IODATS_END             2C      0
    IODATS_MRHDR            0      0
    IODATS_RDEVCHPS        20      8
    IODATS_RDEVCLAS        15      1
    IODATS_RDEVCUID        28      2
    IODATS_RDEVCUIV        2B           40
    IODATS_RDEVCUMN        2A      1
    IODATS_RDEVDEV         1A      2
    IODATS_RDEVDVID        16      2
    IODATS_RDEVDVIV        2B           80
    IODATS_RDEVLPM         19      1
    IODATS_RDEVSID         1C      4
    IODATS_RDEVTYPE        14      1
    MRHDR                   0     20
    MRHDR_END              14      0
    MRHDRDM                 4      1
    MRHDRLEN                0      2
    MRHDRRC                 6      2
    MRHDRTOD                8      8
    MRHDRZER                2      2

    This information is
    based on z/VM V4R4.0.

    Last updated on 22 Jul 2003 at 15:04:23.

    Copyright IBM Corporation, 1990, 2003