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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. |
ATCBK
Cross Reference (Contains links to field and bit definitions)
ATCBK Prolog
NAME : HCPATCBK DESCRIPTION: ATTACH COMMAND BLOCK DSECT : ATCBK FUNCTION : CONTAINS PARAMETERS FROM THE ATTACH COMMAND
ATCBK Control Block Content
ATCBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure ATCBK ATTACH COMMAND BLOCK 0000 0 Address 4 ATCNEXT ADDRESS OF NEXT ATCBK 0004 4 Bitstring 4 ATCDEVS (0) REAL DEVICE NUMBERS 0004 4 Signed 2 ATCRDEV1 BEGINING RDEV NUMBER 0006 6 Signed 2 ATCRDEV2 ENDING RDEV NUMBER 0008 8 Signed 4 ATCVDEV (0) BEGINNING VDEV NUMBER 0008 8 Dbl-Word 8 ATCPARMS (0) PARMS TO PASS HCPATSYS 0008 8 Character 6 ATCVOLID SYSTEM VOLUME LABEL 000E 14 Bitstring 2 ATCSFLGS (0) FLAG BYTES FOR HCPATSYS 000E 14 Bitstring 1 ATCLFLAG FLAG BYTE FOR HCPATSYS 1... .... ATCASSGN X'80' ASSIGN GIVEN LABEL TO DASD .1.. .... ATCCPVOL X'40' MOUNT CP VOLUME LABELS ..1. .... ATCUSRVL X'20' MOUNT USER VOLUME LABELS ...1 .... ATCUNKVL X'10' MOUNT UNKNOWN VOLUME LABELS .111 .... ATCANYVL ATCCPVOL+ATCUSRVL+ATCUNKVL ANY LABELS 000F 15 Bitstring 1 ATCRFLAG FLAG BYTE FOR HCPATSYS 1... .... ATCNORSP X'80' NO REPONSE MESSAGES .1.. .... ATCNOATT X'40' NO 'ALREADY ATTACHED' MSGS ..1. .... ATCSTACK X'20' STACK OUTPUT ...1 .... ATCRO X'10' ATTACH RDEV READ-ONLY .... 1... ATCRLOGD X'08' ATTACH LOGICAL DEVICE .... .1.. ATCRBFWT X'04' WRITE RESPONSE TO BUFFER .... ..1. ATCMAXDV X'02' MAXIMUM NUMBER OF VIRTUAL DEVICES EXCEEDED 0010 16 Bitstring 1 ATCCFLAG LEVEL OF CONTROL FLAG 1... .... DDEVWKAL X'80' Working allegiance on minidisk .1.. .... DDEVCNA X'40' CACHING NOT AVAILABLE ..1. .... DDEVSCTL X'20' SUBSYSTEM CONTROL ...1 .... DDEVDCTL X'10' DEVICE CONTROL .... 1... DDEVNCTL X'08' NO CONTROL .... .1.. DDEVNMDC X'04' MINIOPT NOMDC specified .... ..1. DDEVQDSK X'02' V-disk will be allocated .... ...1 DDEVYMDC X'01' MINIOPT MDC specified 0011 17 Bitstring 1 ATCAFLAG Flag byte for other Attach/Dedicate options 1... .... ATCANOSG X'80' "NOASSIGN" option .1.. .... ATCASSN X'40' "ASSIGN" option ..1. .... ATCNOMS X'20' "NOCPMS" option .... ..1. ATCAIOPS X'02' User set I/O Assist off for the device 0012 18 Bitstring 1 ATCDFLAG DIRECTORY DEVICE INFORMATION 1... .... DDEVTMDK X'80' MDISK DIRECTORY ENTRY .1.. .... DDEVTLNK X'40' LINK DIRECTORY ENTRY ..1. .... DDEVTSPC X'20' SPECIAL DIRECTORY ENTRY ...1 .... DDEVTDED X'10' DEDICATE DIRECTORY ENTRY .... 1... DDEVTSPL X'08' SPOOL / CONSOLE DIRECTORY ENTRY .... .1.. DDEVTDSK X'04' T-DISK TO BE ALLOCATED .... ..1. DDEVRO X'02' DEVICE IS READ ONLY .... ...1 DDEVRELR X'01' VIRTUAL RESERVE RELEASE REQUESTED 00000003 ATCSIZE (*-ATCBK+7)/8 SIZE IN DOUBLEWORDS
ATCBK Storage Layout
*** ATCBK - ATTACH COMMAND BLOCK * * +---------------------------+-------------+-------------+ * 0 | ATCNEXT | ATCRDEV1 | ATCRDEV2 | * +---------------------------+-------------+------+------+ * 8 | ATCVOLID |:LFLAG|:RFLAG| * +------+------+------+--------------------+------+------+ * 10 |:CFLAG|:AFLAG|:DFLAG| 13 * +------+------+------+ * *** ATCBK - ATTACH COMMAND BLOCK
ATCBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----ATCAFLAG 0011
ATCAIOPS 0011 02
ATCANOSG 0011 80
ATCANYVL 000E 70
ATCASSGN 000E 80
ATCASSN 0011 40
ATCCFLAG 0010
ATCCPVOL 000E 40
ATCDEVS 0004
ATCDFLAG 0012
ATCLFLAG 000E
ATCMAXDV 000F 02
ATCNEXT 0000
ATCNOATT 000F 40
ATCNOMS 0011 20
ATCNORSP 000F 80
ATCPARMS 0008
ATCRBFWT 000F 04
ATCRDEV1 0004
ATCRDEV2 0006
ATCRFLAG 000F
ATCRLOGD 000F 08
ATCRO 000F 10
ATCSFLGS 000E
ATCSIZE 0012 00000003
ATCSTACK 000F 20
ATCUNKVL 000E 10
ATCUSRVL 000E 20
ATCVDEV 0008
ATCVOLID 0008
DDEVCNA 0010 40
DDEVDCTL 0010 10
DDEVNCTL 0010 08
DDEVNMDC 0010 04
DDEVQDSK 0010 02
DDEVRELR 0012 01
DDEVRO 0012 02
DDEVSCTL 0010 20
DDEVTDED 0012 10
DDEVTDSK 0012 04
DDEVTLNK 0012 40
DDEVTMDK 0012 80
DDEVTSPC 0012 20
DDEVTSPL 0012 08
DDEVWKAL 0010 80
DDEVYMDC 0010 01
Last updated on 3 Aug 1999 at 11:41:24 EDT.
Copyright IBM Corporation, 1990, 1999