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

#### MDEBK

Prolog

Control Block Contents
MDEBK DSECT
MDEBFENT DSECT
MDEADENT DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### MDEBK Prolog

     NAME       : HCPMDEBK
     DESCRIPTION: ISFC Message Descriptor Block
     DSECT      : MDEBK
     FUNCTION   : Maintain information about an ISFC message.  A complete
                  MDEBK contains the virtual address of each data area
                  that contains message data.
     LOCATED BY : Various queue anchors.
     CREATED BY : ISFC routines that generate messages or accept messages
                  from outside the subsystem.
     DELETED BY : ISFC routines after the message has been transmitted.
     SERIALIZED : The ISFC global lock (HCPBDSGL).
     NOTES      : THIS COPY FILE REQUIRES THE FOLLOWING IN ORDER
                  TO GENERATE PROPERLY:
                  - IPARMLX
                  - HCPCARBK
                  The MDEBK header describes the message, and the
                  primary MDEBK contains pointers that lead to the
                  buffers containing message data.  The MDEBK header
                  is copied into the beginning of each data buffer for
                  transmission across a link.
       +---------------+
       | MDEBK header  |
       |- - - - - - - -|
       |               |    +------------+
       | A(PGEBK.1) ------->|PGEBK.1     |
       | .             |    | Virt.Addr  |
       | .             |    | Host Logic.|
       | .             |    |   Address  |
       | .             |    +------------+
       | .             |              +------------+
       | A(PGEBK.n) ----------------->|PGEBK.n     |
       |               |              | Virt.Addr  |
       +---------------+              | Host Logic.| -->
                                      |  Address   |  |
                                      +------------+  |
                                                      V
                                  +-----------------------+
                                  | MDEBK header          |
                                  |- - - - - - - - - - - -|
                                  | Data contained in     |
                                  | this page frame...    |
                                  |                       |
                                  +-----------------------+

#### MDEBK Control Block Content

#### MDEBK DSECT

####

####

####

####

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      MDEBK          ISFC Message Descriptor Block
          Message Descriptor Block header.
    0000    0 Bitstring    8 MDELNKHD       Link header
          Message Definition.
    0008    8 Bitstring    1 MDEFRMST (0)   Start of this Message Definition
    0008    8 Character    4 MDEMAIL        Target mailbox name
    000C   12 Signed       2 MDEPACCT       Session-specific pacing count
    000E   14 Bitstring    2 *              Reserved
    0010   16 Signed       2 MDECMHLN       Communication Manager Header len
    0012   18 Signed       2 MDEFRMLN       Data length on the frame
    0014   20 Bitstring    1 MDEFUNC        Function
              00000001       MDEOPEN        1 MDEOPEN - Open
              00000002       MDEOPENC       2 MDEOPENC - Open Confirm
              00000003       MDEREJ         3 MDEREJ - Reject
              00000004       MDECLOSE       4 MDECLOSE - Close
              00000005       MDEQSRM        5 MDEQSRM - IUCV Quiesce/Resume
              00000006       MDESEND        6 MDESEND - Send
              00000008       MDESENDC       8 MDESENDC - Send Confirm
              00000009       MDEDATGM       9 MDEDATGM - Datagram
              000000FD       MDEOPENF       253 MDEOPENF - Open with invalid
                                            FMH5
              000000FE       MDEPREQ        254 MDEPREQ - Pacing Request
              000000FF       MDEPRESP       255 MDEPRESP - Pacing Response
              000000FF       MDECOMP        255 MDECOMP - Completion MDEBK
    0015   21 Bitstring    2 MDESEQ         IUCV big send sequence number
    0017   23 Bitstring    1 MDEFLAGS       Flag byte:
              1... ....      MDEPACRQ       X'80' MDEPACRQ - Pacing response
                                            requested
              .1.. ....      MDEPACRS       X'40' MDEPACRS - Pacing response
              ..1. ....      MDECFCL        X'20' MDECFCL - Close originated
                                            by ISFC
              ...1 ....      MDEPACNW       X'10' MDEPACNW - New session
                                            pacing value
              .... 1...      MDESPLIT       X'08' MDESPLIT - Part of a split
                                            large message
              .... .1..      MDEMAST        X'04' MDEMAST - Master MDEBK for
                                            large message
              .... ..1.      MDEFRMED       X'02' MDEFRMED - Flag for frame
                                            count overflow
              .... ...1      MDEBIGD        X'01' MDEBIGD - Reply/data length
                                            over 1 Meg
    0018   24 Signed       2 MDENUMB        Frame number within msg
    001A   26 Signed       2 MDEFRMS        Total number of frames in msg
    001C   28 Signed       4 MDETOTLN       Total length of this msg
    0020   32 Character    8 MDENODET       Target Node ID
    0028   40 Character    8 MDENODES       Source Node ID
    0030   48 Signed       4 MDETSESS       Target Session ID
    0034   52 Signed       4 MDESSESS       Source Session ID
    0038   56 Signed       2 MDEMSGID       Unique message identifier
              00000032       MDEHLEN        *-MDEFRMST Length of Comm Mgr
                                            Header
          Mailbox Header.
    003A   58 Bitstring    1 MDEMHEAD (0)   Start of mailbox header
    003A   58 Signed       2 MDEMHLEN       Mailbox header length
    003C   60 Bitstring    1 MDEMINFO (0)   Start of mailbox information
          Mailbox Header for CP mailbox.
    003C   60 Bitstring    4 *              reserved
              00000006       MDEPMHL        *-MDEMHEAD Length of CPAP mailbox
                                            header
          CP mailbox parameter list.
          NOTES      : The largest parameter list is defined first.
          The value of (CARSIZE*8) for BLOCKMAP is 9*8 = 72
    0040   64 Bitstring   72 MDECLIST       Reserve space for the CP mailbox
                                            parameter list
          Information in the Primary MDEBK.
    0088  136 Bitstring    1 MDECMPDD (0)   Start of CMP Data Definition
    0088  136 Signed       2 *              Reserved
    008A  138 Bitstring    1 MDELCLFL       Local flag byte:
              1... ....      MDEPTHRS       X'80' MDEPTHRS - Resume the path
              .1.. ....      MDECMPPC       X'40' MDECMPPC - CMP pacing
                                            message
              ...1 ....      MDECFMSG       X'10' MDECFMSG - Indicate
                                            stand-alone ISFC msg
              .... 1...      MDEPASS        X'08' MDEPASS - This is a
                                            passthru message
              .... .1..      MDEPTARG       X'04' MDEPTARG - Send passthru
                                            message to target
    008B  139 Bitstring    1 MDEERRFL       Error flags for this MDEBK:
              00000000       MDENOERR       0 MDENOERR - No errors during
                                            processing
              00000001       MDEPAGER       1 MDEPAGER - A paging error
                                            occurred
              00000002       MDECMSER       2 MDECMSER - An error occurred in
                                            HCPCMSSN
              00000003       MDEINVFN       3 MDEINVFN - Invalid ISFC
                                            function
              00000004       MDEINVMF       4 MDEINVMF - Invalid mailbox
                                            function
              00000005       MDEINITE       5 MDEINITE - Initialization error
              00000006       MDEGENER       6 MDEGENER - Generic bad message
              00000007       MDEINPIP       7 MDEINPIP - Invalid PIP data
                                            received
              00000007       MDEMAXER       MDEINPIP MDEMAXER - Maximum error
                                            value
                 NOTES      : The values defined in MDEERRFL are used as
                       offsets in a branch table in HCPBUTRF.
                       The branch table in HCPBUTRF must be updated
                       to reflect any changes or additions to
                       flags.
    008C  140 Signed       4 MDENEXT        Chain pointer
    0090  144 Signed       2 MDEIOOUT       Number of buffers being written
    0092  146 Signed       2 MDEIODON       Number of buffers already written
    0094  148 Signed       4 MDEPTHAD       Address of PTHBK
    0098  152 Signed       4 MDELNKAD       Address of LNKBK for LINK mailbox
    009C  156 Signed       4 MDENODAD       Address of NODBK if frames are a
                                            receive from a remote node.
    00A0  160 Signed       4 MDESNDAD       SENDDATA buffer address
    00A4  164 Signed       4 MDEERROR       Error field dependent on MDEERRFL
                                            Values contained in MDEERROR for
                                            each bit in MDEERRFL MDEPAGER
                                            then value is the bad virtual
                                            address MDECMSER then value is
                                            the protocol error code MDEINVFN
                                            then value is invalid ISFC
                                            function MDEINVMF then value is
                                            invalid mailbox function MDEINITE
                                            then value is queue address
                                            containing MDEBK MDEGENER then
                                            value is invalid MDEINPIP then
                                            value is IPRCODE
              000000A8       MDECLRLN       *-MDEBK Length of MDEBK to be
                                            cleared
    00A8  168 Bitstring    1 MDECLEND (0)   Start of second area to clear
    00A8  168 Signed       4 MDEBLIST       Buffer list area address
    00AC  172 Signed       4 MDEDALST       Data area list address
    00B0  176 Dbl-Word     8 * (0)          Force doubleword alignment
    00B0  176 Bitstring   72 MDELIST        Buffer List The value of
                                            MDEBMAX*MDEADDLN for BLOCKMAP is
                                            9*12 = 108
    00F8  248 Bitstring  108 MDEALST        Data Area List
              000000BC       MDECLRL2       *-MDECLEND Length of second part
                                            of frame
              0000002D       MDESIZE        (*-MDEBK+7)/8 Size, in
                                            doublewords, of MDEBK
          Mailbox Header for APPC and IUCV PLIST.
    003C   60 Bitstring    2 MDECODE        SENDERR/SEVER code MDECODE
                                            contains values defined for
                                            IPCODE
    003E   62 Bitstring    1 MDETYPE        SEND type MDETYPE contains values
                                            defined for IPWHATRC and IPSENDOP
    003F   63 Bitstring    1 MDEAFLAG       Flags (use varies by function)
                                            MDEAFLAG (for MDEFUNC=MDEOPEN): -
                                            IPLVLCF - IPMAPPED - IPIMMED
                                            MDEAFLAG (for MDEFUNC=MDESEND): -
                                            IPNOFLSH
              00000006       MDEAMHL        *-MDEMHEAD Length of APPC mailbox
                                            header
              00000006       MDEIMHL        *-MDEMHEAD Length of IUCV mailbox
                                            header
          APPC/IUCV PLIST.
          NOTES      : The MDEPLIST size is based on the full size of the
                IPARML including the fields that are for CP use only
                and are not presented to a virtual machine.
          The value of (IPTSIZE*8) for BLOCKMAP is 6*8 = 48
    0040   64 Bitstring   48 MDEPLIST       Reserve space for an IUCV PLIST
          The following area is only used when an IUCV message
          is held on the PTHHLDQ (Hold Queue).  This happens
          when the IUCV MSGLIMIT is exceeded and the message
          is held until the local path can accept more messages.
    0070  112 Bitstring    1 MDEHLDFL       Held Message flag
              1... ....      MDEHLDGO       X'80' MDEHLDGO This message is
                                            ready to go
    0074  116 Address      4 MDEHLDRP       Addr of REPLY MDEBK (from R6)
    0078  120 Address      4 MDEHLDPL       Addr of IPARML area (from R8)
    007C  124 Address      4 MDEHLDSB       Addr of SEND Buffer (from R2)
    0080  128 Address      4 MDEHLDSL       Addr of SEND Length (from R3)
          Remap for IUCV mailbox header.
    003C   60 Bitstring    4 MDEBIGCH (0)   IUCV big send chain pointer
          Remapping of the Link Header.
    0000    0 Character    2 MDECTCID       CTC - Release identifier
    0002    2 Signed       2 MDECTCMX       CTC - Maximum Buffers per Write
    0004    4 Signed       2 MDECTCNO       CTC - Number of Buffers used
    0006    6 Bitstring    1 MDECTCAP       CTC - Capabilities
              1... ....      MDECTCWF       X'80' MDECTCWF - WEOF command
                                            supported
    0007    7 Bitstring    1 *              CTC - Reserved
          Mailbox Header for ISFC CLOSE.
    003C   60 Signed       2 MDEMSENS       Sense code for ISFC CLOSE:
              00000001       MDEISNOD       1 MDEISNOD - Invalid source node
              00000002       MDEIMBOX       2 MDEIMBOX - Invalid mailbox
              00000003       MDESQERR       3 MDESQERR - Sequence error on
                                            session
              00000004       MDEISMSG       4 MDEISMSG - Session msg not
                                            allowed
              00000005       MDEIDMSG       5 MDEIDMSG - Datagram msg not
                                            allowed
              00000006       MDEIOACK       6 MDEIOACK - Invalid session in
                                            open ack
              00000007       MDEISESN       7 MDEISESN - Invalid session ID
              00000008       MDESNCMP       8 MDESNCMP - Session not complete
              00000009       MDEDEACT       9 MDEDEACT - OPERATOR deactivated
                                            session
              0000000A       MDEITNOD       10 MDEITNOD - Invalid target node
              0000000B       MDELNKCL       11 MDELNKCL - Close due to link
                                            failure
              0000000C       MDEISIZE       12 MDEISIZE - Invalid message
                                            size for func
              0000000D       MDERSPND       13 MDERSPND - ISFC close response
                                            to ISFC clse
              0000000E       MDEABCLS       14 MDEABCLS - Mailbox session
                                            abnormal close
              00000004       MDECMHLC       *-MDEMHEAD Length of ISFC CLOSE
                                            header
          Mailbox Header for a LINK mailbox message.
    003C   60 Bitstring    1 MDELMFUN       Link Monitor function
              00000001       MDELMFRQ       1 MDELMFRQ - Link Monitor Request
              00000002       MDELMFRS       2 MDELMFRS - Link Monitor
                                            Response
              00000003       MDELMDWN       3 MDELMDWN - Link Monitor 'Link
                                            Down' msg
    003D   61 Bitstring    2 MDELMCNT       - Link Monitor Count
    003F   63 Bitstring    8 MDELINST       - Link Instance Number
              0000000D       MDELMHL        *-MDEMHEAD Length of LINK mailbox
                                            header
          Mailbox Header for a CMP mailbox SEND function.
    003C   60 Bitstring    1 MDECMPFN       CMP SEND function
              00000001       MDECMPCP       1 MDECMPCP - CMP send
                                            capabilities
              00000002       MDECMPRS       2 MDECMPRS - CMP send resources
              00000003       MDECMPRT       3 MDECMPRT - CMP resource table
                                            request
              00000004       MDECMPRR       4 MDECMPRR - CMP resource table
                                            req response
              00000005       MDECMPBR       5 MDECMPBR - CMP broadcast
                                            request
              00000006       MDECMPBS       6 MDECMPBS - CMP broadcast
                                            response
              00000007       MDECMPJL       7 MDECMPJL - CMP journalling
                                            message
              00000008       MDECMPVN       8 MDECMPVN - CMP verify node
                                            message
              00000003       MDECMHLS       *-MDEMHEAD Length of CMP SEND
                                            mailbox header
              00000003       MDECMHL        MDECMHLS Default len for MBX HDR
                                            definition
          Format for 'Send Node Capabilities' message.
    0088  136 Bitstring    2 MDECAPLT       Length of node capabilities
    008A  138 Bitstring    1 MDECAPS        Node capabilities
              1... ....      MDECAPRS       X'80' MDECAPRS - Resources are
                                            supported
              .1.. ....      MDECAPUS       X'40' MDECAPUS - Userid search is
                                            supported
              ..1. ....      MDECAPPW       X'20' MDECAPPW - Password
                                            checking supported
              00000003       MDECAPSZ       *-MDECAPLT Size of node
                                            capabilities
          Format for 'CS area'.
              .... 1.1.      MDECSARL       X'0A' Size of CS area
          FUNCTION   :
            Format for a 'Buffer List' entry within an MDEBK.
            The MDELIST field contains MDEBMAX of these.
          LOCATED BY :
            MDEBLIST (part of the MDEBK).

    MDEBFENT DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      MDEBFENT       ISFC Message Descriptor Block
    0000    0 Signed       4 MDEBFADD       Virtual Address of 1st data byte
    0004    4 Signed       4 MDEBFLEN       Length of the buffer
              00000008       MDEBFBLN       *-MDEBFENT Length of a buffer
                                            list entry
          FUNCTION   :
            Format for an 'Address List' entry within an MDEBK.
            The MDEALST field contains MDEBMAX of these.
          LOCATED BY :
            MDEDALST (part of the MDEBK).

    MDEADENT DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      MDEADENT       ISFC Message Descriptor Block
    0000    0 Signed       4 MDEADVIR       Virtual Address of data frame
    0004    4 Signed       4 MDEADLEN (0)   Length of the frame (with header)
    0004    4 Bitstring    2 *              High-order bytes of frame length
    0006    6 Signed       2 MDEADHLN       Halfword length of the frame
    0008    8 Signed       4 MDEADPGE       Address of PGEBK
              0000000C       MDEADDLN       *-MDEADENT Length of a data area
                                            list entry

    MDEBK Storage Layout

    *** MDEBK - ISFC Message Descriptor Block
    *
    *     +-------------------------------------------------------+
    *   0 |                       MDELNKHD                        |
    *     +---------------------------+-------------+-------------+
    *   8 |         MDEMAIL           |  MDEPACCT   |/////////////|
    *     +-------------+-------------+------+------+------+------+
    *  10 |  MDECMHLN   |  MDEFRMLN   |:FUNC |   MDESEQ    |:FLAGS|
    *     +-------------+-------------+------+-------------+------+
    *  18 |  MDENUMB    |  MDEFRMS    |         MDETOTLN          |
    *     +-------------+-------------+---------------------------+
    *  20 |                       MDENODET                        |
    *     +-------------------------------------------------------+
    *  28 |                       MDENODES                        |
    *     +---------------------------+---------------------------+
    *  30 |         MDETSESS          |         MDESSESS          |
    *     +-------------+-------------+---------------------------+
    *  38 |  MDEMSGID   |  MDEMHLEN   |///////////////////////////|
    *     +-------------+-------------+---------------------------+
    *  40 |                                                       |
    *     =                       MDECLIST                        =
    *     |                                                       |
    *     +-------------+------+------+---------------------------+
    *  88 |/////////////|:LCLFL|:ERRFL|         MDENEXT           |
    *     +-------------+------+------+---------------------------+
    *  90 |  MDEIOOUT   |  MDEIODON   |         MDEPTHAD          |
    *     +-------------+-------------+---------------------------+
    *  98 |         MDELNKAD          |         MDENODAD          |
    *     +---------------------------+---------------------------+
    *  A0 |         MDESNDAD          |         MDEERROR          |
    *     +---------------------------+---------------------------+
    *  A8 |         MDEBLIST          |         MDEDALST          |
    *     +---------------------------+---------------------------+
    *  B0 |                                                       |
    *     =                       MDELIST                         =
    *     |                                                       |
    *     +-------------------------------------------------------+
    *  F8 |                                                       |
    *     =                       MDEALST                         =
    *     |                           +---------------------------+
    *     |                           | 164
    *     +---------------------------+
    *
    *** MDEBK - ISFC Message Descriptor Block

    *** Overlay for MDEMINFO in MDEBK
    *
    *                                 +-------------+------+------+
    *  38 ...                      3C |  MDECODE    |:TYPE |:AFLAG|
    *     +---------------------------+-------------+------+------+
    *  40 |                                                       |
    *     =                       MDEPLIST                        =
    *     |                                                       |
    *     +------+--------------------+---------------------------+
    *  70 |:HLDFL|////////////////////|         MDEHLDRP          |
    *     +------+--------------------+---------------------------+
    *  78 |         MDEHLDPL          |         MDEHLDSB          |
    *     +---------------------------+---------------------------+
    *  80 |         MDEHLDSL          | 84
    *     +---------------------------+
    *
    *** Overlay for MDEMINFO in MDEBK

    *** Overlay for MDEMINFO in MDEBK
    *
    *
    *** Overlay for MDEMINFO in MDEBK

    *** Overlay for MDELNKHD in MDEBK
    *
    *     +-------------+-------------+-------------+------+------+
    *   0 |  MDECTCID   |  MDECTCMX   |  MDECTCNO   |:CTCAP|//////|
    *     +-------------+-------------+-------------+------+------+
    *   8
    *
    *** Overlay for MDELNKHD in MDEBK

    *** Overlay for MDEMINFO in MDEBK
    *
    *                                 +-------------+
    *  38 ...                      3C |  MDEMSENS   | 3E
    *                                 +-------------+
    *
    *** Overlay for MDEMINFO in MDEBK

    *** Overlay for MDEMINFO in MDEBK
    *
    *                                 +------+-------------+------+
    *  38 ...                      3C |:LMFUN|  MDELMCNT   |(03F)-|
    *     +---------------------------+------+-------------+------+
    *  40 |                   -MDELINST                    | 47
    *     +------------------------------------------------+
    *
    *** Overlay for MDEMINFO in MDEBK

    *** Overlay for MDEMINFO in MDEBK
    *
    *                                 +------+
    *  38 ...                      3C |:CMPFN| 3D
    *                                 +------+
    *
    *** Overlay for MDEMINFO in MDEBK

    *** Overlay for MDECMPDD in MDEBK
    *
    *     +-------------+------+
    *  88 |  MDECAPLT   |:CAPS | 8B
    *     +-------------+------+
    *
    *** Overlay for MDECMPDD in MDEBK

    *** MDEBFENT - ISFC Message Descriptor Block
    *
    *     +---------------------------+---------------------------+
    *   0 |         MDEBFADD          |         MDEBFLEN          |
    *     +---------------------------+---------------------------+
    *   8
    *
    *** MDEBFENT - ISFC Message Descriptor Block

    *** MDEADENT - ISFC Message Descriptor Block
    *
    *     +---------------------------+-------------+-------------+
    *   0 |         MDEADVIR          |/////////////|  MDEADHLN   |
    *     +---------------------------+-------------+-------------+
    *   8 |         MDEADPGE          | C
    *     +---------------------------+
    *
    *** MDEADENT - ISFC Message Descriptor Block

    MDEBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    MDEABCLS       003C 0000000E
    MDEADDLN       0008 0000000C
    MDEADHLN       0006
    MDEADLEN       0004
    MDEADPGE       0008
    MDEADVIR       0000
    MDEAFLAG       003F
    MDEALST        00F8
    MDEAMHL        003F 00000006
    MDEBFADD       0000
    MDEBFBLN       0004 00000008
    MDEBFLEN       0004
    MDEBIGCH       003C
    MDEBIGD        0017 01
    MDEBLIST       00A8
    MDECAPLT       0088
    MDECAPPW       008A 20
    MDECAPRS       008A 80
    MDECAPS        008A
    MDECAPSZ       008A 00000003
    MDECAPUS       008A 40
    MDECFCL        0017 20
    MDECFMSG       008A 10
    MDECLEND       00A8
    MDECLIST       0040
    MDECLOSE       0014 00000004
    MDECLRLN       00A4 000000A8
    MDECLRL2       00F8 000000BC
    MDECMHL        003C 00000003
    MDECMHLC       003C 00000004
    MDECMHLN       0010
    MDECMHLS       003C 00000003
    MDECMPBR       003C 00000005
    MDECMPBS       003C 00000006
    MDECMPCP       003C 00000001
    MDECMPDD       0088
    MDECMPFN       003C
    MDECMPJL       003C 00000007
    MDECMPPC       008A 40
    MDECMPRR       003C 00000004
    MDECMPRS       003C 00000002
    MDECMPRT       003C 00000003
    MDECMPVN       003C 00000008
    MDECMSER       008B 00000002
    MDECODE        003C
    MDECOMP        0014 000000FF
    MDECSARL       008A 0A
    MDECTCAP       0006
    MDECTCID       0000
    MDECTCMX       0002
    MDECTCNO       0004
    MDECTCWF       0006 80
    MDEDALST       00AC
    MDEDATGM       0014 00000009
    MDEDEACT       003C 00000009
    MDEERRFL       008B
    MDEERROR       00A4
    MDEFLAGS       0017
    MDEFRMED       0017 02
    MDEFRMLN       0012
    MDEFRMS        001A
    MDEFRMST       0008
    MDEFUNC        0014
    MDEGENER       008B 00000006
    MDEHLDFL       0070
    MDEHLDGO       0070 80
    MDEHLDPL       0078
    MDEHLDRP       0074
    MDEHLDSB       007C
    MDEHLDSL       0080
    MDEHLEN        0038 00000032
    MDEIDMSG       003C 00000005
    MDEIMBOX       003C 00000002
    MDEIMHL        003F 00000006
    MDEINITE       008B 00000005
    MDEINPIP       008B 00000007
    MDEINVFN       008B 00000003
    MDEINVMF       008B 00000004
    MDEIOACK       003C 00000006
    MDEIODON       0092
    MDEIOOUT       0090
    MDEISESN       003C 00000007
    MDEISIZE       003C 0000000C
    MDEISMSG       003C 00000004
    MDEISNOD       003C 00000001
    MDEITNOD       003C 0000000A
    MDELCLFL       008A
    MDELINST       003F
    MDELIST        00B0
    MDELMCNT       003D
    MDELMDWN       003C 00000003
    MDELMFRQ       003C 00000001
    MDELMFRS       003C 00000002
    MDELMFUN       003C
    MDELMHL        003F 0000000D
    MDELNKAD       0098
    MDELNKCL       003C 0000000B
    MDELNKHD       0000
    MDEMAIL        0008
    MDEMAST        0017 04
    MDEMAXER       008B 00000007
    MDEMHEAD       003A
    MDEMHLEN       003A
    MDEMINFO       003C
    MDEMSENS       003C
    MDEMSGID       0038
    MDENEXT        008C
    MDENODAD       009C
    MDENODES       0028
    MDENODET       0020
    MDENOERR       008B 00000000
    MDENUMB        0018
    MDEOPEN        0014 00000001
    MDEOPENC       0014 00000002
    MDEOPENF       0014 000000FD
    MDEPACCT       000C
    MDEPACNW       0017 10
    MDEPACRQ       0017 80
    MDEPACRS       0017 40
    MDEPAGER       008B 00000001
    MDEPASS        008A 08
    MDEPLIST       0040
    MDEPMHL        003C 00000006
    MDEPREQ        0014 000000FE
    MDEPRESP       0014 000000FF
    MDEPTARG       008A 04
    MDEPTHAD       0094
    MDEPTHRS       008A 80
    MDEQSRM        0014 00000005
    MDEREJ         0014 00000003
    MDERSPND       003C 0000000D
    MDESEND        0014 00000006
    MDESENDC       0014 00000008
    MDESEQ         0015
    MDESIZE        00F8 0000002D
    MDESNCMP       003C 00000008
    MDESNDAD       00A0
    MDESPLIT       0017 08
    MDESQERR       003C 00000003
    MDESSESS       0034
    MDETOTLN       001C
    MDETSESS       0030
    MDETYPE        003E

    This information is
    based on z/VM V6R1.0.
    Last updated on 18 Feb 2010 at 08:50:14 EDT.

    Copyright IBM Corporation, 1990, 2008