Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only.

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   59 *              Reserved
          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 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |/////////////+-----------------------------------------+
*     |/////////////| 42
*     +-------------+
*
*** SHOBK - Set System Characteristics Data Area
 

SHOBK Cross Reference

(contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----

SHOBKBYL       0007 00000042

SHOBKDSZ       0007 00000009

SHOCUSUP       0002

SHOCWSUP       0006

SHOFLAGS       0001

SHONULLW       0006 04

SHOPAVOL       0006 08

SHOPREFX       0006 80

SHOPSFOR       0000

SHORDTDT       0006 40

SHOUWTSE       0006 10

SHOWTSET       0006 20

SHO1DCCW       0000 1D
This information is based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 12:31:57 EDT.
Copyright IBM Corporation, 1990, 1999