CNNBK Back to Index page
 
Prolog 
Control Block Contents 
   CNNBK DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  CNNBK Prolog Top of page
 
 NAME       : HCPCNNBK
 DESCRIPTION: Connectivity (aka ISFC) address space
              specific control block
 DSECT      : CNNBK
 FUNCTION   : Contains information used in managing
              (allocation and re-organization of) a
              Connectivity address space.
 LOCATED BY : ASCTYPTR field of ASCBK points to a CAABK.  This
              control block starts at CAAFSI (function specific
              information) section of the CAABK.
 CREATED BY : HCPASMCR, when creating a Connectivity address space
 DELETED BY : Once created, never deleted.
 SERIALIZED :
 RELOCATION CONSIDERATIONS : None
 
 
  CNNBK Control Block Content Top of page
 

 CNNBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure CNNBK Connectivity (aka ISFC) address space 0000 0 Bitstring 1 CNNINDEX Index of the i-ASIT table entry that describes address space 0001 1 Bitstring 1 * (3) Reserved for IBM use 0004 4 Signed 4 * (3) Reserved for IBM use 00000002 CNNSIZE (*-CNNBK+7)/8 Size, in doublewords, of CNNBK
 
 
  CNNBK Storage Layout Top of page
 
          
*** CNNBK - Connectivity (aka ISFC) address space
*
*     +------+--------------------+---------------------------+
*   0 |:INDEX|////////////////////|///////////////////////////|
*     +------+--------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  10
*
*** CNNBK - Connectivity (aka ISFC) address space
 
 
  CNNBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
CNNINDEX       0000
CNNSIZE        0004 00000002
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:48:09 EDT.
Copyright IBM Corporation, 1990, 2022