ATCBK

Prolog  

Control Block Contents  
   ATCBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

ATCBK Prolog

 NAME       : HCPATCBK
 DESCRIPTION: ATTACH COMMAND BLOCK
 DSECT      : ATCBK
 FUNCTION   : CONTAINS PARAMETERS FROM THE ATTACH COMMAND
 RELOCATION CONSIDERATIONS : None

ATCBK Control Block Content

ATCBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      ATCBK          ATTACH COMMAND BLOCK
0000    0 Address      4 ATCNEXT        ADDRESS OF NEXT ATCBK
0004    4 Bitstring    4 ATCDEVS (0)    REAL DEVICE NUMBERS
0004    4 Signed       2 ATCRDEV1       BEGINING RDEV NUMBER
0006    6 Signed       2 ATCRDEV2       ENDING RDEV NUMBER
0008    8 Address      4 ATCEQADR       Address of the EQID/DUID
000C   12 Signed       4 ATCVDEV (0)    BEGINNING VDEV NUMBER
0010   16 Dbl-Word     8 ATCPARMS (0)   PARMS TO PASS HCPATSYS
0010   16 Character    6 ATCVOLID       SYSTEM VOLUME LABEL
0016   22 Bitstring    2 ATCSFLGS (0)   FLAG BYTES FOR HCPATSYS
0016   22 Bitstring    1 ATCLFLAG       FLAG BYTE FOR HCPATSYS
          1... ....      ATCASSGN       X'80' ATCASSGN ASSIGN GIVEN LABEL
                                        TO DASD
          .1.. ....      ATCCPVOL       X'40' ATCCPVOL MOUNT CP VOLUME
                                        LABELS
          ..1. ....      ATCUSRVL       X'20' ATCUSRVL MOUNT USER VOLUME
                                        LABELS
          ...1 ....      ATCUNKVL       X'10' ATCUNKVL MOUNT UNKNOWN
                                        VOLUME LABELS
          .111 ....      ATCANYVL       ATCCPVOL+ATCUSRVL+ATCUNKVL
                                        ATCANYVL ANY LABELS
0017   23 Bitstring    1 ATCRFLAG       FLAG BYTE FOR HCPATSYS
          1... ....      ATCNORSP       X'80' ATCNORSP NO REPONSE
                                        MESSAGES
          .1.. ....      ATCNOATT       X'40' ATCNOATT NO 'ALREADY
                                        ATTACHED' MSGS
          ..1. ....      ATCSTACK       X'20' ATCSTACK STACK OUTPUT
          ...1 ....      ATCRO          X'10' ATCRO ATTACH RDEV READ-ONLY
          .... 1...      ATCRLOGD       X'08' ATCRLOGD ATTACH LOGICAL
                                        DEVICE
          .... .1..      ATCRBFWT       X'04' ATCRBFWT WRITE RESPONSE TO
                                        BUFFER
          .... ..1.      ATCMAXDV       X'02' ATCMAXDV MAXIMUM NUMBER OF
                                        VIRTUAL DEVICES EXCEEDED
0018   24 Bitstring    1 ATCCFLAG       LEVEL OF CONTROL FLAG
          1... ....      DDEVWKAL       X'80' DDEVWKAL Working allegiance
                                        on minidisk
          .1.. ....      DDEVCNA        X'40' DDEVCNA CACHING NOT
                                        AVAILABLE
          ..1. ....      DDEVSCTL       X'20' DDEVSCTL SUBSYSTEM CONTROL
          ...1 ....      DDEVDCTL       X'10' DDEVDCTL DEVICE CONTROL
          .... 1...      DDEVNCTL       X'08' DDEVNCTL NO CONTROL
          .... .1..      DDEVNMDC       X'04' DDEVNMDC MINIOPT NOMDC
                                        specified
          .... ..1.      DDEVQDSK       X'02' DDEVQDSK V-disk will be
                                        allocated
          .... ...1      DDEVYMDC       X'01' DDEVYMDC MINIOPT MDC
                                        specified NOTES : DDEVFLGC is NOT
                                        exclusive to MDISK devices.
0019   25 Bitstring    1 ATCAFLAG       Flag byte for other
                                        Attach/Dedicate options
          1... ....      ATCANOSG       X'80' ATCANOSG "NOASSIGN" option
          .1.. ....      ATCASSN        X'40' ATCASSN "ASSIGN" option
          ..1. ....      ATCNOMS        X'20' ATCNOMS "NOCPMS" option
          ...1 ....      ATCSHRD        X'10' ATCSHRD "MULTIUSER" option
          .... 1...      ATCSNGL        X'08' ATCSNGL "SINGLEUSER" option
          .... .1..      ATCNQIOA       X'04' ATCNQIOA "NOQIOAssist"
                                        option
          .... ..1.      ATCAIOPS       X'02' ATCAIOPS User set I/O
                                        Assist off for device
          .... ...1      ATCABVO        X'01' ATCABVO DASD attached with
                                        VOLid parm
001A   26 Bitstring    1 ATCDFLAG       DIRECTORY DEVICE INFORMATION
          1... ....      DDEVTMDK       X'80' DDEVTMDK MDISK DIRECTORY
                                        ENTRY
          .1.. ....      DDEVTLNK       X'40' DDEVTLNK LINK DIRECTORY
                                        ENTRY
          ..1. ....      DDEVTSPC       X'20' DDEVTSPC SPECIAL / NICDEF
                                        DIRECTORY ENTRY
          ...1 ....      DDEVTDED       X'10' DDEVTDED DEDICATE DIRECTORY
                                        ENTRY
          .... 1...      DDEVTSPL       X'08' DDEVTSPL SPOOL / CONSOLE
                                        DIRECTORY ENTRY
          .... .1..      DDEVTDSK       X'04' DDEVTDSK T-DISK TO BE
                                        ALLOCATED
          .... ..1.      DDEVRO         X'02' DDEVRO DEVICE IS READ ONLY
          .... ...1      DDEVRELR       X'01' DDEVRELR VIRTUAL RESERVE
                                        RELEASE REQUESTED
001B   27 Bitstring    1 ATCAFLG2       Second flag byte for Attach and
                                        Dedicate options
          1... ....      ATCVLID        X'80' ATCVLID Attach using the
                                        VOLID
          .1.. ....      ATCUSRID       X'40' ATCUSRID "USERACCessid"
                                        options specified
          ..1. ....      ATCKEYS        X'20' ATCKEYS "KEY" options
                                        specified
001C   28 Bitstring    1 ATCPFLAG       Special processing flag byte
          1... ....      ATCPEQID       X'80' ATCPEQID EQID processing
                                        required
          .1.. ....      ATCPDUID       X'40' ATCPDUID DUID processing
                                        required
001D   29 Bitstring    3 *              Reserved for future use
0020   32 Character    8 ATCACCID       Specified "USERACCessid" value
0028   40 Bitstring   32 ATCKEYA1       First KEYALIAS (tapes only)
0048   72 Bitstring   32 ATCKEYA2       Second KEYALIAS (tapes only)
0068  104 Address      4 ATCKEYP1       First KLABK Pointer (tapes only)
006C  108 Address      4 ATCKEYP2       Second KLABK Pointer (tapes only)
          0000000E       ATCSIZE        (*-ATCBK+7)/8 SIZE IN DOUBLEWORDS

ATCBK Storage Layout

          
*** ATCBK - ATTACH COMMAND BLOCK
*
*     +---------------------------+-------------+-------------+
*   0 |         ATCNEXT           |  ATCRDEV1   |  ATCRDEV2   |
*     +---------------------------+-------------+-------------+
*   8 |         ATCEQADR          |         ATCVDEV           |
*     +---------------------------+-------------+------+------+
*  10 |                ATCVOLID                 |:LFLAG|:RFLAG|
*     +------+------+------+------+------+------+------+------+
*  18 |:CFLAG|:AFLAG|:DFLAG|:AFLG2|:PFLAG|////////////////////|
*     +------+------+------+------+------+--------------------+
*  20 |                       ATCACCID                        |
*     +-------------------------------------------------------+
*  28 |                                                       |
*     =                       ATCKEYA1                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  48 |                                                       |
*     =                       ATCKEYA2                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  68 |         ATCKEYP1          |         ATCKEYP2          |
*     +---------------------------+---------------------------+
*  70
*
*** ATCBK - ATTACH COMMAND BLOCK

ATCBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
ATCABVO        0019 01
ATCACCID       0020
ATCAFLAG       0019
ATCAFLG2       001B
ATCAIOPS       0019 02
ATCANOSG       0019 80
ATCANYVL       0016 70
ATCASSGN       0016 80
ATCASSN        0019 40
ATCCFLAG       0018
ATCCPVOL       0016 40
ATCDEVS        0004
ATCDFLAG       001A
ATCEQADR       0008
ATCKEYA1       0028
ATCKEYA2       0048
ATCKEYP1       0068
ATCKEYP2       006C
ATCKEYS        001B 20
ATCLFLAG       0016
ATCMAXDV       0017 02
ATCNEXT        0000
ATCNOATT       0017 40
ATCNOMS        0019 20
ATCNORSP       0017 80
ATCNQIOA       0019 04
ATCPARMS       0010
ATCPDUID       001C 40
ATCPEQID       001C 80
ATCPFLAG       001C
ATCRBFWT       0017 04
ATCRDEV1       0004
ATCRDEV2       0006
ATCRFLAG       0017
ATCRLOGD       0017 08
ATCRO          0017 10
ATCSFLGS       0016
ATCSHRD        0019 10
ATCSIZE        006C 0000000E
ATCSNGL        0019 08
ATCSTACK       0017 20
ATCUNKVL       0016 10
ATCUSRID       001B 40
ATCUSRVL       0016 20
ATCVDEV        000C
ATCVLID        001B 80
ATCVOLID       0010
DDEVCNA        0018 40
DDEVDCTL       0018 10
DDEVNCTL       0018 08
DDEVNMDC       0018 04
DDEVQDSK       0018 02
DDEVRELR       001A 01
DDEVRO         001A 02
DDEVSCTL       0018 20
DDEVTDED       001A 10
DDEVTDSK       001A 04
DDEVTLNK       001A 40
DDEVTMDK       001A 80
DDEVTSPC       001A 20
DDEVTSPL       001A 08
DDEVWKAL       0018 80
DDEVYMDC       0018 01