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

NSDBK

Prolog  

Control Block Contents  
   NSDBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  


NSDBK Prolog

 NAME       : HCPNSDBK
 DESCRIPTION: DEFSEG/DEFSYS parameter control block
 DSECT      : NSDBK
 FUNCTION   : The HCPNSDBK is a parameter area used for
              DEFSEG/DEFSYS.
 LOCATED BY : None
 CREATED BY : HCPNSD
 DELETED BY : HCPNSD

 

NSDBK Control Block Content


NSDBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      NSDBK          DEFSEG/DEFSYS parameter control block
0000    0 Bitstring    1 NSDOPTFG       Operand/option flag
          ...1 ....      NSDMINSZ       X'10' NSDMINSZ If on, indicates
                                        MINSIZE operand was specified.
          ..1. ....      NSDPREGS       X'20' NSDPREGS If on, indicates
                                        PARMREGS operand was already
                                        specified
          .1.. ....      NSDSAMER       X'40' NSDSAMER If on, indicates
                                        that SAMErange operand was
                                        already specified
          1... ....      NSDSSP         X'80' NSDSSP If on, indicates
                                        that the SPACE operand was
                                        already specified
0001    1 Bitstring    1 NSDERRFG       Error flag
          1... ....      NSDMSSCL       X'80' NSDMSSCL Indicate that the
                                        MSS (R8) SDFBK is to be closed
          .1.. ....      NSDMSSPU       X'40' NSDMSSPU Indicate that the
                                        MSS (R9) SDFBK is to be purged
          ..1. ....      NSDSSPCL       X'20' NSDSSPCL Indicate that the
                                        SSP (R8) SDFBK is to be closed
          ...1 ....      NSDSSPPU       X'10' NSDSSPPU Indicate that the
                                        SSP (R8) SDFBK is to be purged
          .... 1...      NSDNOMSG       X'08' NSDNOMSG Indicates to exit
                                        without sending a message
0002    2 Bitstring    1 NSDSTAFG       Status flag
          1... ....      NSDMSSOR       X'80' NSDMSSOR Indicates that the
                                        member was found opened for reads
          .1.. ....      NSDNEWSP       X'40' NSDNEWSP Indicates a new
                                        SSP created. No need to return
                                        frame from the call to HCPNSCFA.
          ..1. ....      NSDSSPOR       X'20' NSDSSPOR Indicates that the
                                        segment space was found opened
                                        for read
0003    3 Bitstring    1 NSDLCKFG       *NSS SDF queue lock status
          1... ....      NSDSDFEX       X'80' NSDSDFEX Indicates that the
                                        *NSS SDF queue lock is held
                                        exclusively
          ..1. ....      NSDSDFNO       X'20' NSDSDFNO Indicates that the
                                        *NSS SDF queue lock is not held
          00000001       NSDBKDSZ       (*-NSDBK+7)/8 NSDBK block size in
                                        DW's
          00000004       NSDBKBSZ       (*-NSDBK) NSDBK block size in
                                        bytes

 

NSDBK Storage Layout

          
*** NSDBK - DEFSEG/DEFSYS parameter control block
*
*     +------+------+------+------+
*   0 |:OPTFG|:ERRFG|:STAFG|:LCKFG| 4
*     +------+------+------+------+
*
*** NSDBK - DEFSEG/DEFSYS parameter control block

 

NSDBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
NSDBKBSZ       0003 00000004
NSDBKDSZ       0003 00000001
NSDERRFG       0001
NSDLCKFG       0003
NSDMINSZ       0000 10
NSDMSSCL       0001 80
NSDMSSOR       0002 80
NSDMSSPU       0001 40
NSDNEWSP       0002 40
NSDNOMSG       0001 08
NSDOPTFG       0000
NSDPREGS       0000 20
NSDSAMER       0000 40
NSDSDFEX       0003 80
NSDSDFNO       0003 20
NSDSSP         0000 80
NSDSSPCL       0001 20
NSDSSPOR       0002 20
NSDSSPPU       0001 10
NSDSTAFG       0002

This information is based on z/VM V6R1.0. Last updated on 18 Feb 2010 at 08:52:29 EDT.
Copyright IBM Corporation, 1990, 2008