SHOBK

Prolog  

Control Block Contents  
   SHOBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

SHOBK Prolog

 Name       : HCPSHOBK
 Description: Set System Characteristics Data Area
 DSECT      : SHOBK
 Function   : Map resident data area for Set System
              Characteristics Data in HCPIOD
 Located by :
 Created by : none
 Deleted by : none

SHOBK Control Block Content

SHOBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      SHOBK          Set System Characteristics Data
                                        Area
0000    0 Bitstring    1 SHOPSFOR       Order
          ...1 11.1      SHO1DCCW       X'1D' Set System Characteristics
                                        Order
0001    1 Bitstring    1 SHOFLAGS       Flags
0002    2 Bitstring    4 SHOCUSUP       Control Unit Types Supported
0006    6 Bitstring    1 SHOCWSUP       CCW Supported
          1... ....      SHOPREFX       X'80' Prefix Command Supported
          .1.. ....      SHORDTDT       X'40' Read Track Data Supported
          ..1. ....      SHOWTSET       X'20' Write Track Set Supported
          ...1 ....      SHOUWTSE       X'10' Update Write Trackset
                                        Supported
          .... 1...      SHOPAVOL       X'08' Parallel Access Volume
                                        Supported
          .... .1..      SHONULLW       X'04' Nullification Window not
                                        required
0007    7 Bitstring   55 *              Reserved
003E   62 Bitstring    1 SHOP1          Part 1
003F   63 Bitstring    1 SHOP2          Part 2
0040   64 Bitstring    2 SHOP3          Part 3
          00000042       SHOBKBYL       *-SHOBK Byte length of SHOBK
          00000009       SHOBKDSZ       ((SHOBKBYL+7)/8) Doubleword
                                        length of SHOBK

SHOBK Storage Layout

          
*** SHOBK - Set System Characteristics Data Area
*
*     +------+------+---------------------------+------+------+
*   0 |:PSFOR|:FLAGS|         SHOCUSUP          |:CWSUP|//////|
*     +------+------+---------------------------+------+//////|
*   8 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |/////////////////////////////////////////+------+------+
*  38 |/////////////////////////////////////////|SHOP1 |SHOP2 |
*     +-------------+---------------------------+------+------+
*  40 |   SHOP3     | 42
*     +-------------+
*
*** SHOBK - Set System Characteristics Data Area

SHOBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
SHOBKBYL       0040 00000042
SHOBKDSZ       0040 00000009
SHOCUSUP       0002
SHOCWSUP       0006
SHOFLAGS       0001
SHONULLW       0006 04
SHOPAVOL       0006 08
SHOPREFX       0006 80
SHOPSFOR       0000
SHOP1          003E
SHOP2          003F
SHOP3          0040
SHORDTDT       0006 40
SHOUWTSE       0006 10
SHOWTSET       0006 20
SHO1DCCW       0000 1D