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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. |
DFXBK
Cross Reference (Contains links to field and bit definitions)
DFXBK Prolog
NAME : HCPFCWDS DESCRIPTION: Define Extent Parameter DSECT : DFXBK
DFXBK Control Block Content
DFXBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DFXBK Define Extent Parameter 0000 0 Bitstring 1 DFXMASK Mask byte 0001 1 Bitstring 1 DFXATRB Global attributes 0002 2 Signed 2 DFXBSIZE Block size in bytes 0004 4 Signed 4 DFXEXTLO (0) Extent locator for FBA The following redefines the DFXEXTLO for ECKD devices 0004 4 Bitstring 2 DFXCACID Cache fast write ID 0006 6 Character 1 * 0007 7 Bitstring 1 DFXGATBE Global Attributes Extended .... .1.. DFXSTDRZ X'04' Regular record zero 0008 8 Bitstring 4 DFXSTART Beginning of extent 000C 12 Bitstring 4 DFXEND End of extent 11.. .... DFXECKD X'C0' Mask to check architecture
DFXBK Storage Layout
*** DFXBK - Define Extent Parameter * * +------+------+-------------+-------------+------+------+ * 0 |:MASK |:ATRB | DFXBSIZE | DFXCACID |//////|:GATBE| * +------+------+-------------+-------------+------+------+ * 8 | DFXSTART | DFXEND | * +---------------------------+---------------------------+ * 10 * *** DFXBK - Define Extent Parameter
DFXBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----DFXATRB 0001
DFXBSIZE 0002
DFXCACID 0004
DFXECKD 000C C0
DFXEND 000C
DFXEXTLO 0004
DFXGATBE 0007
DFXMASK 0000
DFXSTART 0008
DFXSTDRZ 0007 04
Last updated on 3 Aug 1999 at 11:55:27 EDT.
Copyright IBM Corporation, 1990, 1999