TIDAW | Back to Index page

| Prolog Control Block Contents TIDAW DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

TIDAW Prolog | Top of page

     NAME       : HCPTIDAW
     DESCRIPTION: Transport indirect data addressing word mapping
     DSECT      : TIDAW
     FUNCTION   : Provide symbolic reference to the fields of a
                  transport indirect data address word used by
                  Fibre Channel Extensions (FCX)
     LOCATED BY : N/A
     CREATED BY : N/A
     DELETED BY : NA

TIDAW Control Block Content | Top of page

     TIDAW DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      TIDAW          Transport indirect data addressing word mapping
    0000    0 Signed       4 TIDAWW0 (0)    Word 0
    0000    0 Bitstring    1 TIDAWFLG       TIDAW flag byte
              1... ....      TIDAWLST       X'80' TIDAWLST This is the last
                                            TIDAW
              .1.. ....      TIDAWSKP       X'40' TIDAWSKP Skip data transfer
                                            for the TIDAW
              ..1. ....      TIDAWDXI       X'20' TIDAWDXI
                                            Data-transfer-interruption
                                            control
              ...1 ....      TIDAWTIC       X'10' TIDAWTIC
                                            TIDAW-transfer-in-channel (TTIC)
              .... 1...      TIDAWCBC       X'08' TIDAWCBC Insert-CBC control
                                            All other bits reserved for IBM
                                            use
    0001    1 Bitstring    3 TIDAWRES       Reserved for IBM use
    0004    4 Signed       4 TIDAWCNT       TIDAW count
    0008    8 Dbl-Word     8 TIDAWADR (0)   TIDAW data address
    0008    8 Signed       4 TIDAWADH       High half of data address
    000C   12 Signed       4 TIDAWADL       Low half of data address
    0010   16 Dbl-Word     8 TIDAWNXT (0)   Next TIDAW address
              00000010       TIDAWBSZ       (*-TIDAW) TIDAW byte size
              00000002       TIDAWDSZ       (*-TIDAW+7)/8 TIDAW dword size

TIDAW Storage Layout | Top of page

    *** TIDAW - Transport indirect data addressing word mapping
    *
    *     +------+--------------------+---------------------------+
    *   0 |:AWFLG|     TIDAWRES       |         TIDAWCNT          |
    *     +------+--------------------+---------------------------+
    *   8 |         TIDAWADH          |         TIDAWADL          |
    *     +---------------------------+---------------------------+
    *
    *** TIDAW - Transport indirect data addressing word mapping

TIDAW Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    TIDAWADH       0008
    TIDAWADL       000C
    TIDAWADR       0008
    TIDAWBSZ       0010 00000010
    TIDAWCBC       0000 08
    TIDAWCNT       0004
    TIDAWDSZ       0010 00000002
    TIDAWDXI       0000 20
    TIDAWFLG       0000
    TIDAWLST       0000 80
    TIDAWNXT       0010
    TIDAWRES       0001
    TIDAWSKP       0000 40
    TIDAWTIC       0000 10
    TIDAWW0        0000

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:31:17 EDT.
Copyright IBM Corporation, 1990, 2020