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

#### CDEV

Prolog

Control Block Contents
CDEV DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### CDEV Prolog

     NAME       : DMSCDEV
     DESCRIPTION: CONSOLE DEVICE TABLE MAPPING
     DSECT      : CDEV
     FUNCTION   : THE CONSOLE DEVICE TABLE IS A LINKED
                  LIST OF DEVICE ENTRIES CONTAINING INFORMATION
                  ABOUT DEVICES OPENED TO A PATH BY THE CONSOLE
                  FACILITY. A DEVICE ENTRY IS DELETED WHEN AN
                  APPLICATION ISSUES A CONSOLE CLOSE AND NO OTHER
                  PATHS ARE OPENED TO THAT DEVICE.
     DEPENDENCIES - FIELDS CONTAINED WITHIN THE CDEVCQY STRUCTURE
                  MUST MAP 1 FOR 1 WITH THE FIELDS IN THE DEVICE
                  SECTION OF THE CQYSECT MA PPING MACRO. ANY
                  CHANGES MUST BE CHECKED AGAINST CQYSECT.

#### CDEV Control Block Content

#### CDEV DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      CDEV           CONSOLE DEVICE TABLE MAPPING
    0000    0 Address      4 CDEVNEXT       ADDR OF NEXT DEVICE ENTRY
    0004    4 Address      4 CDEVPLIO       PATH ENTRY ADDR OF WHO DID LAST
                                            I/O
    0008    8 Address      4 CDEVOPEN       PATH ENTRY ADDR OF WHO LAST
                                            OPENED
    000C   12 Address      4 CDEVPWT        PATH ENTRY ADDR OF WHO IS WAITING
    0010   16 Bitstring    1 CDEVFLG1       FLAG BYTE
              1... ....      CDEVLMIO       X'80' LINEMODE I/O INTERRUPT
                                            PENDING
              .1.. ....      CDEVWTG        X'40' CONSOLE, NOT APPL, ISSUED
                                            WAIT
    0011   17 Bitstring    3 *              RESERVED
    0014   20 Signed       4 CDEVSID        SUBSYSTEM ID (XA-MODE ONLY)
    0018   24 Dbl-Word     8 CDEVCCWS (0)   FORMAT-0 CONSOLE CCWS
    0018   24 Dbl-Word     8 CDEVCCW1 (0)   FIRST CCW WORKAREA
    0018   24 Bitstring    1 CDEVCW1C       CCW COMMAND CODE
    0019   25 Bitstring    3 CDEVCW1A       DATA ADDRESS
    001C   28 Bitstring    1 CDEVCW1F       FLAG BYTE
    001D   29 Bitstring    1 CDEVCW1L       CTL FLAGS
    001E   30 Signed       2 CDEVCW1B       BYTE COUNT
    0020   32 Dbl-Word     8 CDEVCCW2 (0)   SECOND CCW WORKAREA
    0020   32 Bitstring    1 CDEVCW2C       CCW COMMAND CODE
    0021   33 Bitstring    3 CDEVCW2A       DATA ADDRESS
    0024   36 Bitstring    1 CDEVCW2F       FLAG BYTE
    0025   37 Bitstring    1 CDEVCW2L       CTL FLAGS
    0026   38 Signed       2 CDEVCW2B       BYTE COUNT
    0018   24 Dbl-Word     8 CDEVCCX1 (0)   FIRST CCW WORKAREA
    0018   24 Bitstring    1 CDEVCX1C       CCW COMMAND CODE
    0019   25 Bitstring    1 CDEVCX1F       FLAG BYTE
    001A   26 Signed       2 CDEVCX1B       BYTE COUNT
    001C   28 Signed       4 CDEVCX1A       DATA ADDRESS
    0020   32 Dbl-Word     8 CDEVCCX2 (0)   SECOND CCW WORKAREA
    0020   32 Bitstring    1 CDEVCX2C       CCW COMMAND CODE
    0021   33 Bitstring    1 CDEVCX2F       FLAG BYTE
    0022   34 Signed       2 CDEVCX2B       BYTE COUNT
    0024   36 Signed       4 CDEVCX2A       DATA ADDRESS
    0028   40 Signed       4 CDEVCQY (0)    SECTION TO MOVE TO USER BUFFER
    0028   40 Signed       4 CDEVPNUM       NUMBER OF PATHS OPENED TO DEV
    002C   44 Signed       4 CDEVADDR       VIRTUAL DEVICE ADDRESS
              00000030       CDEVD24        * DIAGNOSE X'24' INFORMATION
    0030   48 Bitstring    4 CDEVVIRT (0)   VIRTUAL DEVICE INFO
    0030   48 Bitstring    1 CDEVVCLS       VIRTUAL DEV TYPE CLASS
    0031   49 Bitstring    1 CDEVVTYP       VIRTUAL DEVICE TYPE
    0032   50 Bitstring    1 CDEVVSTT       VIRTUAL DEVICE STATUS
    0033   51 Bitstring    1 CDEVVFLG       VIRTUAL DEVICE FLAGS
    0034   52 Bitstring    4 CDEVREAL (0)   REAL DEVICE INFO
    0034   52 Bitstring    1 CDEVRCLS       REAL DEVICE TYPE CLASS
    0035   53 Bitstring    1 CDEVRTYP       REAL DEVICE TYPE
    0036   54 Bitstring    1 CDEVRMDL       REAL MODEL NUMBER
    0037   55 Bitstring    1 CDEVRFTR       REAL FEATURE CODE
    0038   56 Bitstring    2 CDEVVCNS (0)   MORE DIAG X'24' INFO
    0038   56 Bitstring    1 CDEVLLEN       VIRT. CONS. LINE LENGTH
    0039   57 Bitstring    1 CDEVTMCD       VIRT. CONS. TERMINAL CODE
    003A   58 Bitstring    1 CDEVATTR       DEVICE ATTRIBUTE FLAGS
              .... .1..      CDEVARMT       X'04' DEV. IS A REMOTE 3270
              .... ..1.      CDEVADSP       X'02' DEV. IS A DISPLAY
              .... ...1      CDEVAVCN       X'01' DEV. IS THE VIRTUAL CONSOLE
    003B   59 Bitstring    1 CDEVSTAT       DEVICE STATUS FLAGS
              1... ....      CDEVATTN       X'80' ATTENTION PENDING
              .1.. ....      CDEVDISC       X'40' DEV. IS DISCONNECTED
              ..1. ....      CDEVLINE       X'20' VIRTUAL CONSOLE STATE AT
                                            LAST I/O INTERRUPT
                                            (1=LINEMODE,0=FSCR)
    003C   60 Character    6 CDEVDQR        FIRST 6 BYTES OF X'8C' INFO
    0042   66 Bitstring    1 CDEVQYCD       DEVICE QUERY CODE
    0043   67 Bitstring    1 *              RESERVED
    0044   68 Signed       4 CDEV8CRL       LEN OF REMAINING X'8C' INFO
    0048   72 Signed       4 *              UNUSED (MAPS TO 8C PTR FIELD IN
                                            CQYSECT FOR MOVE)
    004C   76 Signed       4 CDEV8CL        LEN OF TOTAL DIAG X'8C' INFO
              00000050       CDEVLEN        *-CDEV LEN OF DEVICE INFO
                                            EXCLUDING X'8C'
    0050   80 Dbl-Word     8 CDEVD8C (0)    DIAGNOSE X'8C' BUFFER
    0050   80 Character    6 *              6 BYTES DIAG X'8C' INFO
    0056   86 Character 1018 CDEVD8CR       REMAINING DIAG X'8C' INFO
              00000428       CDEVL          *-CDEVCQY LEN TO MOVE WHEN DEV
                                            INFO CHANGES DUE TO RECONNECT
              00000450       CDEVSIZE       *-CDEV SIZE OF DEVICE ENTRY
              0000008A       CDEVDBSZ       ((CDEVSIZE+7)/8) SIZE OF DEV
                                            ENTRY IN DBWRDS

#### CDEV Storage Layout

    *** CDEV - CONSOLE DEVICE TABLE MAPPING
    *
    *     +---------------------------+---------------------------+
    *   0 |         CDEVNEXT          |         CDEVPLIO          |
    *     +---------------------------+---------------------------+
    *   8 |         CDEVOPEN          |         CDEVPWT           |
    *     +------+--------------------+---------------------------+
    *  10 |:VFLG1|////////////////////|         CDEVSID           |
    *     +------+--------------------+------+------+-------------+
    *  18 |:VCW1C|     CDEVCW1A       |:VCW1F|:VCW1L|  CDEVCW1B   |
    *     +------+--------------------+------+------+-------------+
    *  20 |:VCW2C|     CDEVCW2A       |:VCW2F|:VCW2L|  CDEVCW2B   |
    *     +------+--------------------+------+------+-------------+
    *  28
    *
    *** CDEV - CONSOLE DEVICE TABLE MAPPING

    *** Overlay for ORG in CDEV
    *
    *     +------+------+-------------+---------------------------+
    *  18 |:VCX1C|:VCX1F|  CDEVCX1B   |         CDEVCX1A          |
    *     +------+------+-------------+---------------------------+
    *  20 |:VCX2C|:VCX2F|  CDEVCX2B   |         CDEVCX2A          |
    *     +------+------+-------------+---------------------------+
    *  28 |         CDEVPNUM          |         CDEVADDR          |
    *     +------+------+------+------+------+------+------+------+
    *  30 |:VVCLS|:VVTYP|:VVSTT|:VVFLG|:VRCLS|:VRTYP|:VRMDL|:VRFTR|
    *     +------+------+------+------+------+------+------+------+
    *  38 |:VLLEN|:VTMCD|:VATTR|:VSTAT|         CDEVDQR-          |
    *     +------+------+------+------+---------------------------+
    *  40 |   -(03C)    |:VQYCD|//////|         CDEV8CRL          |
    *     +-------------+------+------+---------------------------+
    *  48 |///////////////////////////|         CDEV8CL           |
    *     +---------------------------+-------------+-------------+
    *  50 |/////////////////////////////////////////|             |
    *     +-----------------------------------------+             |
    *  58 |                                                       |
    *     =                       CDEVD8CR                        =
    *     |                                                       |
    *     +-------------------------------------------------------+
    * 450
    *
    *** Overlay for ORG in CDEV

#### CDEV Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    CDEVADDR       002C
    CDEVADSP       003A 02
    CDEVARMT       003A 04
    CDEVATTN       003B 80
    CDEVATTR       003A
    CDEVAVCN       003A 01
    CDEVCCWS       0018
    CDEVCCW1       0018
    CDEVCCW2       0020
    CDEVCCX1       0018
    CDEVCCX2       0020
    CDEVCQY        0028
    CDEVCW1A       0019
    CDEVCW1B       001E
    CDEVCW1C       0018
    CDEVCW1F       001C
    CDEVCW1L       001D
    CDEVCW2A       0021
    CDEVCW2B       0026
    CDEVCW2C       0020
    CDEVCW2F       0024
    CDEVCW2L       0025
    CDEVCX1A       001C
    CDEVCX1B       001A
    CDEVCX1C       0018
    CDEVCX1F       0019
    CDEVCX2A       0024
    CDEVCX2B       0022
    CDEVCX2C       0020
    CDEVCX2F       0021
    CDEVDBSZ       0056 0000008A
    CDEVDISC       003B 40
    CDEVDQR        003C
    CDEVD24        002C 00000030
    CDEVD8C        0050
    CDEVD8CR       0056
    CDEVFLG1       0010
    CDEVL          0056 00000428
    CDEVLEN        004C 00000050
    CDEVLINE       003B 20
    CDEVLLEN       0038
    CDEVLMIO       0010 80
    CDEVNEXT       0000
    CDEVOPEN       0008
    CDEVPLIO       0004
    CDEVPNUM       0028
    CDEVPWT        000C
    CDEVQYCD       0042
    CDEVRCLS       0034
    CDEVREAL       0034
    CDEVRFTR       0037
    CDEVRMDL       0036
    CDEVRTYP       0035
    CDEVSID        0014
    CDEVSIZE       0056 00000450
    CDEVSTAT       003B
    CDEVTMCD       0039
    CDEVVCLS       0030
    CDEVVCNS       0038
    CDEVVFLG       0033
    CDEVVIRT       0030
    CDEVVSTT       0032
    CDEVVTYP       0031
    CDEVWTG        0010 40
    CDEV8CL        004C
    CDEV8CRL       0044

This information is based on z/VM V5R2.0.
Last updated on 6 Dec 2005 at 15:35:09 EDT.
Copyright IBM Corporation, 1990, 2005