SDLBK Back to Index page
 
Prolog 
Control Block Contents 
   SDLBK 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.


  SDLBK Prolog Top of page
 
 NAME       : HCPSDLBK
 DESCRIPTION: SPOOLING DATA LOCATOR BLOCK
 DSECT      : SDLBK
 FUNCTION   : SPECIFIES THE CCW AND THE LOCATION OF ASSOCIATED
              DATA TO BE ADDED TO OR READ FROM A SPOOL FILE.
 LOCATED BY : VDSSDL - ANCHOR IN HCPVDSBK
              GENERAL REGISTER 1 IN HCPVSP, HCPSPS, & HCPSXS
 CREATED BY : HCPVDS, HCPSPS
 DELETED BY : HCPDTD, HCPSPS
 RELOCATION CONSIDERATIONS : None
 
 
  SDLBK Control Block Content Top of page
 

 SDLBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SDLBK SPOOLING DATA LOCATOR BLOCK 0000 0 Bitstring 1 SDLCCWOP CCW COMMAND CODE 0001 1 Bitstring 1 SDLCCWFL CCW FLAG BITS 1... .... CCWDC X'80' CCWDC CHAIN DATA ADDRESS AND COUNT .1.. .... CCWCC X'40' CCWCC COMMAND CHAIN ..1. .... CCWSILI X'20' CCWSILI SUPPRESS INCORRECT LENGTH ...1 .... CCWSKIP X'10' CCWSKIP SUPPRESS INBOUND DATA TRANSFER .... 1... CCWPCIR X'08' CCWPCIR REQUEST PC INTERRUPTION .... .1.. CCWIDA X'04' CCWIDA INDIRECT DATA ADDRESSING .... ..11 CCWINVAL X'03' CCWINVAL I/O UNDEFINED PAIR OF BITS .... ..1. CCWSUSPN X'02' CCWSUSPN I/O SUSPENSION/RESUMPTION The CCWUNDEF definition is left here because some code still uses this field where the CCWMIDA bit is not applicable. .... ...1 CCWUNDEF X'01' CCWUNDEF I/O UNDEFINED BIT .... ...1 CCWMIDA X'01' CCWMIDA Modified-CCW-indirect-data-addres sing 0002 2 Bitstring 2 SDLTBC TOTAL BYTE COUNT (CCW DATA COUNT) 0004 4 Bitstring 1 * (3) RESERVED 0007 7 Bitstring 1 SDLFLAG DATA LOCATOR FLAG 1... .... SDLCHSIM X'80' SDLCHSIM USE CHANNEL SIMULATOR TO MOVE DATA. IF OFF, DATA BUFFER LIST FOLLOWS. .1.. .... SDLNOTTL X'40' SDLNOTTL DO NOT PRINT PAGE TITLES ..1. .... SDLFSTSP X'20' SDLFSTSP This is the first SPLINK in the file to be translated ...1 .... SDLSPTCM X'10' SDLSPTCM SPTAPE LOAD issued and blanks are compressed 0008 8 Signed 4 SDLIORBK IORBK ADDR FOR CHANNEL SIMULATOR 000C 12 Signed 4 SDLBUFCT NUMBER OF DATA BUFFERS (0-4) WHICH FOLLOW 0010 16 Dbl-Word 8 SDLSECTS (6) 0-4 DATA BUFFERS (ADDR / LENGTH) The length of the SDLSAVE field for BLOCKMAP is 64 d-words 0040 64 Dbl-Word 8 SDLSAVE (64) Add a savearea for use by VSQRW 00000048 SDLSIZE (*-SDLBK+7)/8 SDLBK SIZE IN DOUBLE WORDS 0010 16 Signed 4 SDLSRADD Host Logical addr of data section 0014 20 Signed 4 SDLSVADD VIRTUAL ADDRESS OF DATA SECTION. (WORK AREA FOR CALLER - NOT REQ) 0018 24 Signed 4 SDLSECCT BYTE COUNT OF THE DATA SECTION 0000000C SDLENTRY *-SDLSRADD LENGTH OF ONE DATA BUFFER ENTRY
 
 
  SDLBK Storage Layout Top of page
 
          
*** SDLBK - SPOOLING DATA LOCATOR BLOCK
*
*     +------+------+-------------+--------------------+------+
*   0 |:CCWOP|:CCWFL|   SDLTBC    |////////////////////|:FLAG |
*     +------+------+-------------+--------------------+------+
*   8 |         SDLIORBK          |         SDLBUFCT          |
*     +---------------------------+---------------------------+
*  10 |                                                       |
*     =                       SDLSECTS                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  40 |                                                       |
*     =                       SDLSAVE                         =
*     |                                                       |
*     +-------------------------------------------------------+
* 240
*
*** SDLBK - SPOOLING DATA LOCATOR BLOCK
          
*** Overlay for SDLSECTS in SDLBK
*
*     +---------------------------+---------------------------+
*  10 |         SDLSRADD          |         SDLSVADD          |
*     +---------------------------+---------------------------+
*  18 |         SDLSECCT          | 1C
*     +---------------------------+
*
*** Overlay for SDLSECTS in SDLBK
 
 
  SDLBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
CCWCC          0001 40
CCWDC          0001 80
CCWIDA         0001 04
CCWINVAL       0001 03
CCWMIDA        0001 01
CCWPCIR        0001 08
CCWSILI        0001 20
CCWSKIP        0001 10
CCWSUSPN       0001 02
CCWUNDEF       0001 01
SDLBUFCT       000C
SDLCCWFL       0001
SDLCCWOP       0000
SDLCHSIM       0007 80
SDLENTRY       0018 0000000C
SDLFLAG        0007
SDLFSTSP       0007 20
SDLIORBK       0008
SDLNOTTL       0007 40
SDLSAVE        0040
SDLSECCT       0018
SDLSECTS       0010
SDLSIZE        0040 00000048
SDLSPTCM       0007 10
SDLSRADD       0010
SDLSVADD       0014
SDLTBC         0002
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:54:47 EDT.
Copyright IBM Corporation, 1990, 2022