CDBOVL

Prolog  

Control Block Contents  
   CDBOVL DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

CDBOVL Prolog

 NAME       : DMSCDB
 DESCRIPTION: COMDIR CONTROL BLOCK
 DSECT      : CDBOVL
 FUNCTION   : COMDIR Info Overlay

CDBOVL Control Block Content

CDBOVL DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      CDBOVL         COMDIR CONTROL BLOCK
0000    0 Character   18 CDBFID         filespec
0000    0 Character    8 CDBFN          file name
0008    8 Character    8 CDBFT          file type
0010   16 Character    2 CDBFM          file mode
0012   18 Character    1 CDBFLG         flag byte
0013   19 Character    1 *
0014   20 Address      4 CDBBLK         ptr to NAMEFxxx SCBLOCK equates
                                        for mapping the flag bytes for
                                        CDBFLG,CDBSFLG,CDBUFLG
          1... ....      CDBSSTAT       X'80' system comdir status
          .1.. ....      CDBSMOD        X'40' system model usage
          ..1. ....      CDBSSPEC       X'20' system file id specified
          ...1 ....      CDBSLOAD       X'10' system file id loaded
          1... ....      CDBUSTAT       X'80' user comdir status
          .1.. ....      CDBUMOD        X'40' user model usage
          ..1. ....      CDBUSPEC       X'20' user file id specified
          ...1 ....      CDBULOAD       X'10' user file id loaded
          1... ....      CDBSTAT        X'80' comdir on/off
          .1.. ....      CDBMODEL       X'40' model usage static-0
                                        dynamic-1
          ..1. ....      CDBSPEC        X'20' file id specified
          ...1 ....      CDBLOAD        X'10' file id loaded

CDBOVL Storage Layout

          
*** CDBOVL - COMDIR CONTROL BLOCK
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                        CDBFID                         =
*     |             +-----------------------------------------+
*     |             | 12
*     +-------------+
*
*** CDBOVL - COMDIR CONTROL BLOCK
          
*** Overlay for CDBFID in CDBOVL
*
*     +-------------------------------------------------------+
*   0 |                        CDBFN                          |
*     +-------------------------------------------------------+
*   8 |                        CDBFT                          |
*     +-------------+------+------+---------------------------+
*  10 |   CDBFM     |CDBFLG|//////|          CDBBLK           |
*     +-------------+------+------+---------------------------+
*  18
*
*** Overlay for CDBFID in CDBOVL

CDBOVL Cross Reference

Symbol         Dspl Value
-------------- ---- -----
CDBBLK         0014
CDBFID         0000
CDBFLG         0012
CDBFM          0010
CDBFN          0000
CDBFT          0008
CDBLOAD        0014 10
CDBMODEL       0014 40
CDBSLOAD       0014 10
CDBSMOD        0014 40
CDBSPEC        0014 20
CDBSSPEC       0014 20
CDBSSTAT       0014 80
CDBSTAT        0014 80
CDBULOAD       0014 10
CDBUMOD        0014 40
CDBUSPEC       0014 20
CDBUSTAT       0014 80