OPCTB

Prolog  

Control Block Contents  
   OPCTB DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

OPCTB Prolog

 NAME       : HCPOPCTB
 DESCRIPTION: OPERATOR CONSOLE DEVICE NUMBER TABLE
 DSECT      : OPCTB
 FUNCTION   : CONTAINS THE DEVICE NUMBERS OF THE OPERATORS PRIMARY
              AND ALTERNATE CONSOLES.
 LOCATED BY : SYSRIOPC is the pointer to the list of potential
              devices to become the operator's console
      SYSRIOPC ---> +-------+
                    | devno | primary console
                    +-------+
                    | devno | alternate console
                    +-------+
                    | devno | alternate console
                    +-------+
                    |   .   |
                    +-------+
                    |FFFFFFF| end of table
                    +-------+
 CREATED BY : OPCTB is initially part of the system nucleus
              created by the sysgen process.  During system
              initialization, a new OPCTB may be created in
              gotten storage.
 DELETED BY : OPCTB IS PART OF THE SYSTEM NUCLEUS AND NEVER DELETED.

OPCTB Control Block Content

OPCTB DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      OPCTB          OPERATOR CONSOLE DEVICE NUMBER TABLE
             THE FIRST ENTRY IS THE PRIMARY OPERATOR'S CONSOLE,
             EACH SUCCESSIVE ENTRY IS FOR AN ALTERNATE CONSOLE,
             THE END OF THE TABLE IS INDICATED BY X'FFFFFFFF'.
0000    0 Signed       4 OPCDEVNO       Device number of the terminal to
                                        become one of the consoles
0004    4 Bitstring    1 OPCFLAG        Device flags
          1... ....      OPCIC          X'80' OPCIC Integrated console
                                        indicator
          .1.. ....      OPCICGRF       X'40' OPCICGRF Integrated 3270
                                        indicator
          00000005       OPCLEN         *-OPCTB Length of one entry
          00000005       OPCNEXT        * Next device number in list

OPCTB Storage Layout

          
*** OPCTB - OPERATOR CONSOLE DEVICE NUMBER TABLE
*
*     +---------------------------+------+
*   0 |         OPCDEVNO          |:FLAG | 5
*     +---------------------------+------+
*
*** OPCTB - OPERATOR CONSOLE DEVICE NUMBER TABLE

OPCTB Cross Reference

Symbol         Dspl Value
-------------- ---- -----
OPCDEVNO       0000
OPCFLAG        0004
OPCIC          0004 80
OPCICGRF       0004 40
OPCLEN         0004 00000005
OPCNEXT        0004 00000005