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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
CNNBK
Control Block Contents
CNNBK DSECT
Cross Reference (Contains links to field and bit definitions)
CNNBK Prolog
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
CNNBK DSECT
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
*** CNNBK - Connectivity (aka ISFC) address space * * +------+--------------------+---------------------------+ * 0 |:INDEX|////////////////////|///////////////////////////| * +------+--------------------+///////////////////////////| * |///////////////////////////////////////////////////////| * +-------------------------------------------------------+ * 10 * *** CNNBK - Connectivity (aka ISFC) address space
CNNBK Cross Reference
Symbol Dspl Value -------------- ---- ----- CNNINDEX 0000 CNNSIZE 0004 00000002
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