NAME       : CMSCB
 DESCRIPTION: Simulated OS Control Blocks
 DSECT      : FCBSECT
 FUNCTION   : FCBSECT consists of the CMS file control block
              (FCB) used for file management under CMS, the
              simulated OS job file control block (JFCB),
              input/output block (IOB), and data extent block
              (DEB). FCBSECT is dynamically allocated from
              CMS free storage each time the FILEDEF command
              is issued.

 FCBSECT DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      FCBSECT        Simulated OS Control Blocks
0000    0 Bitstring    1 FCBINIT (0)    - INTERESTING TIDBITS
          .... 1...      FCBOPCB        X'08' FCBOPCB - OPEN ACQUIRED
                                        THIS CMS BLOCK
          .... .1..      FCBPERM        X'04' FCBPERM - PERMANENT CONTROL
                                        BLOCK
          .... ..1.      FCBBATCH       X'02' FCBBATCH - SPECIAL BATCH
                                        DATA SET
          .... ...1      FCBCATML       X'01' FCBCATML - CONCATENATED
                                        MACLIB DATA SET
          ...1 ....      FCBOS          X'10' FCBOS FCB FOR OS FORMATTED
                                        DISK
          ..1. ....      FCBDOSL        X'20' FCBDOSL CONCATENATED DOSLIB
                                        DATA SET
          .1.. ....      FCBCATLD       X'40' FCBCATLD CONCATENATED OS
                                        LOADLIB
          1... ....      FCBDID         X'80' FCBDID ASSOCIATE DDNAME
                                        WITH ENTIRE DISK FOR DISKID USAGE
0000    0 Address      4 FCBNEXT        - AL3(NEXT CMSCB)
0004    4 Address      4 FCBPROC        - A(SPECIAL PROCESSING ROUTINE)
0008    8 Character    8 FCBDD          - DATA DEFINITION NAME
0010   16 Character    8 FCBOP          - CMS OPERATION
0018   24 Dbl-Word     8 IHAJFCB (0)    - *** JOB FILE CONTROL BLOCK ***
0018   24 Bitstring    1 JFCBDSNM (0)   - 44 BYTES, DATA SET NAME
0018   24 Character    8 FCBDSNAM       - DATA SET NAME
0020   32 Character    8 FCBDSTYP       - DATA SET TYPE
          ..1. .1..      FCBPRPU        FCBDSTYP+4 FCBPRPU -
                                        PRINTER/PUNCH COMMAND LIST
0028   40 Bitstring    1 FCBTBSP (0)    2 BYTES, TAPE BACKSPCE COUNT
0028   40 Character    2 FCBDSMD        - DATA SET MODE
002A   42 Character    2 FCBDSMDC       - Saved concat data set mode
002C   44 Signed       4 FCBBUFF        - A(INPUT-OUTPUT BUFFER)
0030   48 Signed       4 FCBBYTE        - DATA COUNT
0034   52 Character    1 FCBFORM        - FILE FORMAT: FIXED/VARIABLE
                                        RECS
0035   53 Bitstring    1 FCBFLG         - =FSCBFLG flag byte for extended
                                        plist bit
0036   54 Bitstring    1 FCBFLG2        - =FSCBFLG2 extended plist flag
                                        byte
0037   55 Bitstring    1 FCBOTYP        - OPEN intent (R,W,X,N)
0038   56 Signed       4 FCBREAD        - N'BYTES ACTUALLY READ
003C   60 Signed       4 FCBITEM        - EXTENDED PLIST ITEM COUNT.
0040   64 Signed       4 FCBCOUT        - EX. PLIST RECORDS / PHYSICAL
                                        BLK.
0044   68 Signed       4 FCBWPTR        - EXTENDED PLIST WRITE PTR.
0048   72 Signed       4 FCBRPTR        - EXTENDED PLIST READ PTR.
004C   76 Bitstring    1 FCBDEV         - DEVICE TYPE CODE
          .... ....      FCBDUM         0 FCBDUM - DUMMY DEVICE
          .... .1..      FCBPTR         4 FCBPTR - PRINTER
          .... 1...      FCBRDR         8 FCBRDR - READER
          .... 11..      FCBCON         12 FCBCON - CONSOLE TERMINAL
          ...1 ....      FCBTAP         16 FCBTAP - TAPE
          ...1 .1..      FCBDSK         20 FCBDSK - DISK
          ...1 1...      FCBPCH         24 FCBPCH - PUNCH
          ...1 11..      FCBCRT         28 FCBCRT - CRT
          ..1. ....      FCBVSAM        32 FCBVSAM - VSAM
004D   77 Bitstring    1 FCBRFMT        - --> Working Recording Format
                                        FCBRFMT is defined for a tape
                                        file only. It is a TAPEIO
                                        recording format code denoting
                                        the recording format in effect
                                        with the file. While no file is
                                        open, it simply reflects the
                                        recording format request from the
                                        FILEDEF, which may be a
                                        nonspecific recording format
                                        code. While a file is open,
                                        though, it is always a specific
                                        recording format code -- the one
                                        indicated by the FILEDEF
                                        specification in conjunction with
                                        the capabilities of the device.
                                        See also FCBOFMT.
004E   78 Bitstring    1 FCBOFMT        --> Original Recording Format
                                        FBCOFMT is defined only for a
                                        tape file. It is set by DMSFLO
                                        when the Filedef command is
                                        issued and should NEVER be
                                        changed anywhere else. This means
                                        that we can ALWAYS restore the
                                        original recording format after
                                        it has been changed. When the
                                        tape file is not open,
                                        FCBRFMT=FCBOFMT unless an Open
                                        error occurred, in which case the
                                        value of FCBRFMT is
                                        unpredictable.
004F   79 Bitstring    1 *              - RESERVED
0050   80 Signed       2 FCBRECL        - DCB LRECL AT OPEN TIME
0052   82 Bitstring    1 IOBIOFLG       - I/O FLAGS
0053   83 Bitstring    1 FCBDCBCT       - NO. OF DCB'S USING THIS FCB
0054   84 Signed       4 FCBR13         - SAVEAREA VECTOR R13
0058   88 Address      4 FCBKEYS        - A(DDS IN'CORE KEY TABLE)
005C   92 Address      4 FCBPDS         - A(PDS IN-CORE DIRECTORY)
0060   96 Bitstring    1 JFCBMASK (8)   - VARIOUS MASK BITS
0068  104 Character    1 JFCBCRDT (3)   - DATA SET CREATION DATE (YDD)
006B  107 Character    1 JFCBXPDT (3)   - DATA SET EXPIRATION DATE (YDD)
006E  110 Bitstring    1 JFCBIND1       - INDICATOR ONE
006F  111 Bitstring    1 JFCBIND2       - INDICATOR TWO
          1... ....      JFCMOD         X'80' JFCMOD - DISP MOD specified
                                        on FILEDEF command.
          .1.. ....      JFCOLDF        X'40' JFCOLDF - DISP OLD ON
                                        FILEDEF
          .... 1...      JFCLRCLX       X'08' JFCLRCLX - LRECL=X
                                        specified/implied
          .... .1..      JFCLIBSV       X'04' JFCLIBSV - Lib Dataserver
                                        usage noted by OPEN (CMS usage
                                        differs from OS/MVS)
          .... ..1.      JFCEXTND       X'02' JFCEXTND - EXTEND specified
                                        on OPEN macro (This flag is used
                                        only for the duration of OPEN
                                        processing - CMS usage differs
                                        from OS/MVS)
          .... ...1      JFCM4FLG       X'01' JFCM4FLG - This is a
                                        filemode number 4 file (CMS usage
                                        differs from OS/MVS)
0070  112 Bitstring    1 JFCBUFNO       - NUMBER OF BUFFERS
0071  113 Bitstring    1 JFCBFTEK (0)   - BUFFERING TECHNIQUE
0071  113 Bitstring    1 JFCBFALN       - BUFFER ALIGNMENT
0072  114 Signed       2 JFCBUFL        - BUFFER LENGTH
0074  116 Bitstring    1 JFCEROPT       - ERROR OPTION
0075  117 Bitstring    1 JFCKEYLE       - KEYLENGTH
0076  118 Bitstring    1 *              - ---NOT USED---
0077  119 Bitstring    1 JFCLIMCT (3)   - BDAM SEARCH LIMIT
007A  122 Bitstring    1 FCBDSORG (0)   - DATA SET ORGANIZATION
007A  122 Bitstring    1 JFCDSORG (2)   -
007C  124 Bitstring    1 FCBRECFM (0)   - RECORD FORMAT
007C  124 Bitstring    1 JFCRECFM       -
007D  125 Bitstring    1 JFCOPTCD       - OPTION CODES
007E  126 Signed       2 FCBBLKSZ (0)   - BLOCK SIZE
007E  126 Signed       2 JFCBLKSI       -
0080  128 Signed       2 FCBLRECL (0)   - LOGICAL RECORD LENGTH
0080  128 Signed       2 JFCLRECL       -
0082  130 Bitstring    1 FCBIOSW        - I/O OPERATION INDICATOR
          1... ....      FCBCLOSE       X'80' FCBCLOSE - DURING "CLOSE"
          .1.. ....      FCBMASTR       X'40' FCBMASTR - Master FCB for
                                        Concatenation
          ..1. ....      FCBPROCC       X'20' FCBPROCC - GOTO FCBPROC
                                        DURING CLOSE
          ...1 ....      FCBPROCO       X'10' FCBPROCO - GOTO FCBPROC
                                        DURING OPEN
          .... 1...      FCBCASE        X'08' FCBCASE - ON=LOWER CASE
                                        CONSOLE I/O
          .... .1..      FCBPVMB        X'04' FCBPVMB - PUT-MOVE-VAR-BLK
          .... ..1.      FCBIOWR        X'02' FCBIOWR - WRITE/PUT
          .... ...1      FCBIORD        X'01' FCBIORD - READ/GET
0083  131 Bitstring    1 FCBIOSW2       - I/O OPERATION INDICATORS
          .... ...1      FCBMVPDS       X'01' FCBMVPDS - SW FOR MOVEFILE
                                        WITH PDS OPTION
          .... ..1.      FCBMMV         X'02' FCBMMV MOVE PDS SWITCH FOR
                                        FIND
          .... .1..      FCBBYSVC       X'04' FCBBYSVC The function
                                        currently in control was invoked
                                        via SVC. Used by routines that
                                        are called during FEOV
                                        processing.
          .... 1...      FCBMVFIL       X'08' FCBMVFIL Movefile is active
          ...1 ....      FCBCLEAV       X'10' FCBCLEAV - LEAVE
                                        positioning on Close
          ..1. ....      FCBCRERD       X'20' FCBCRERD - REREAD
                                        positioning on Close
          .1.. ....      FCBTCLOS       X'40' FCBTCLOS A CLOSE TYPE T was
                                        done
          1... ....      FCBWRTSW       X'80' FCBWRTSW INDICATE DCB OPEN
                                        FOR WRITE
0084  132 Bitstring    1 DEBLNGTH (0)   - L'DEB IN DBLW WORDS
0084  132 Signed       4 *              - ---NOT USED---
0088  136 Dbl-Word     8 IHADEB (0)     - *** DATA EXTENT BLOCK ***
0088  136 Address      4 DEBTCBAD       - A(MOVE-MODE USER BUFFER)
008C  140 Signed       4 SEBSAV         DYNAMIC SAVE FOR RET ADDR FOR SEB
                                        (OS I/O SIM)
0090  144 Bitstring    1 DEBOFLGS (4)   - DATA SET STAUS FLAGS
0094  148 Bitstring    1 DEBOPATB (4)   - OPEN/CLOSE OPTION BYTE
0098  152 Bitstring    1 IOBFLG (0)     - (START OF IOBPREFIX FOR NORMAL
                                        SCH)
          .... ....      IOBBFLG        0 IOBBFLG - DISPLACEMENT OF IOB
                                        FLAG IN IOB
          .1.. ....      IOBOUT         X'40' IOBOUT - "WRITE,PUT" IN
                                        PROGRESS
          ..1. ....      IOBIN          X'20' IOBIN - "READ,GET" IN
                                        PROGRESS
          ...1 ....      IOBUPD         X'10' IOBUPD - "QSAM PUTX" IN
                                        PROCESS
0098  152 Address      4 IOBNXTAD       - A(NEXT BUFFER TO BE USED)
009C  156 Signed       4 IOBECB         - ECB FOR QSAM NORMAL SCHEDULING
00A0  160 Signed       4 IHAIOB (0)     - *** INPUT/OUTPUT BLOCK ***
00A0  160 Bitstring    1 DEBDEBID (0)   - DEB IDENTIFICATION
00A0  160 Address      4 DEBDCBAD       - A(DATA CONTROL BLOCK)
00A4  164 Bitstring    1 IOBECBCC (0)   - ECB COMPLETION CODE
          .... 11..      IOBBECBC       12 IOBBECBC - DISPLACEMENT OF ECB
                                        CODE IN IOB
          .... 11..      IOBBECBP       12 IOBBECBP - DISPLACEMENT OF ECB
                                        PTR IN IOB
00A4  164 Address      4 IOBECBPT       - A(EVENT CONTROL BLOCK)
00A8  168 Bitstring    1 IOBFLAG3 (0)   - I/O ERROR FLAG
          ...1 ....      IOBBCSW        16 IOBBCSW - DISPLACEMENT OF CSW
                                        IN IOB
00A8  168 Bitstring    1 IOBCSW (8)     - LAST CCW STORED(I.E., RESIDUAL
                                        COUNT)
00B0  176 Address      4 IOBSTART       - X'ID-NEXT BUFFER',AL3(INITIAL
                                        BUFFER)
00B4  180 Address      4 IOBDCBPT       - A(DATA CONTROL BLOCK)
00B8  184 Bitstring    1 IOBEND (0)     - END-OF-INPUT/OUTPUT BLOCK
00B8  184 Signed       4 FCBMEMBR (2)   OS PDS MEMBER NAME
00C0  192 Signed       4 FCBOSFST       POINTER TO OS FST
00C4  196 Signed       4 FCBOSDSN       POINTER TO OS DSNAME BLOCK
00C8  200 Signed       4 FCBXTENT       - NUMBER OF ITEMS IN EXTENT
00CC  204 Address      4 FCBTEOV        - ADDRESS OF TEOVEXIT ROUTINE.
00D0  208 Address      4 FCBTSAVE       - ADDRESS OF SYSTEM REGISTER SAVE
                                        AREA FOR TEOVEXIT.
00D4  212 Bitstring    1 FCBFLAG1       - MISC. FLAG BITS.
          1... ....      FCBTEOVS       X'80' FCBTEOVS TAPE END-OF-VOLUME
                                        EXIT AVAILABLE
          .1.. ....      FCBTEOVA       X'40' FCBTEOVA TEOV EXIT IS
                                        ACTIVE.
          ..1. ....      FCBMVOL        X'20' FCBMVOL PROCESSING
                                        MULTIVOLUME FILE
          ...1 ....      FCBVSECT       X'10' FCBVSECT PROCESSING VOLIDS
                                        FROM A VOLSECT
          .... 1...      FCBMTCAN       X'08' FCBMTCAN TAPE MOUNT
                                        CANCELED FROM DMSTVS Bits used
                                        for SFS directory-resident files:
          .... .1..      FCBSPCHK       X'04' FCBSPCHK FSWRITE tracks
                                        file's SFS filespace usage
          .... ..1.      FCBDIR         X'02' FCBDIR this file is on an
                                        SFS directory
          .... ...1      FCBERASE       X'01' FCBERASE erase file when it
                                        is closed: this flag i used ONLY
                                        for SFS directory files
00D5  213 Bitstring    1 FCBVCTR        - VOLID COUNTER The following
                                        field has two uses: It used as
                                        the volume sequence number for
                                        tape and as the original
                                        blocksize saved by DMSSOP for
                                        Console
00D6  214 Signed       2 FCBVSEQ        TAPE VOLUME SEQUENCE NUMBER
          11.1 .11.      FCBCNBLK       FCBVSEQ FCBCNBLK Console Original
                                        Blocksize
00D8  216 Signed       4 FCBALT         ALTERNATE TAPE DRIVE TAPID Or
                                        temp save of fcbosfst for dmssop
00DC  220 Address      4 FCBTVIPL       DMSTVI PLIST ADDRESS
00E0  224 Address      4 FCBSYSPA       SYSPARM STRING ADDRESS
00E4  228 Signed       2 FCBSYSPL       SYSPARM STRING LENGTH (DWORDS)
00E6  230 Signed       2 FCBSYSPB       SYSPARM STRING LENGTH (BYTES)
          1... 1...      FCBDISP        IHADEB-FCBINIT FCBDISP
                                        Displacement of FCB address
00E8  232 Bitstring    1 FCBFLAG3       -
          1... ....      FCBFMAST       X'80' FCBFMAST FCB filemode was
                                        asterisk
          .1.. ....      FCBUSASI       X'40' FCBUSASI Buffer Offset Flag
                                        bit for ANSI DMSSOP will define
                                        an FCB for any required global
                                        library if the user has not
                                        defined one. When the DCB is
                                        closed DMSOSC checks this flag to
                                        decide whether to clear the FCB
          ..1. ....      FCBSCLR        X'20' FCBSCLR Do Filedef SCLEAR
                                        for this DDNAME
          ...1 ....      FCBLIBSV       X'10' FCBLIBSV Use RMS to call
                                        Tape Library Dataserver
          .... 1...      FCBLRCLX       X'08' FCBLRCLX LRECL=X specified
                                        in FILEDEF
          .... .1..      FCBLRCLM       X'04' FCBLRCLM OPEN FCBMERGE
                                        reset the DCBLRECL
          .... ..1.      FCBRDEOF       X'02' FCBRDEOF Read a CMS LIB to
                                        physical EOF
          .... ...1      FCBOSSIM       X'01' FCBOSSIM File needs true OS
                                        Sim limits
00E9  233 Bitstring    1 FCBBUFOF       - BUFFER OFFSET (0-99) FOR ANSI
00EA  234 Bitstring    1 FCBRSRV1       RESERVED for future use
00EB  235 Bitstring    1 FCBLBOM        Saved first char of dataset name
00EC  236 Signed       4 FCBVCOUT       Number of variable length records
                                        read into a block by QSAM
00F0  240 Bitstring    1 FCBFLAG4       -
          1... ....      FCBTXTL        X'80' FCBTXTL CONCATENATED TXTLIB
                                        DATA SET
          .1.. ....      FCBLRI         X'40' FCBLRI Logical Record
                                        Interface used
          ..1. ....      FCBBADDN       X'20' FCBBADDN Fileid matches,
                                        DDN doesn't
          ...1 ....      FCBLRIXT       X'10' FCBLRIXT Xtended LRI
                                        records in use
          .... 1...      FCBDRFMT       X'08' FCBDRFMT Default RECFM
                                        filled in by OPEN
          .... .1..      FCBDLREC       X'04' FCBDLREC Default LRECL
                                        filled in by OPEN
          .... ..1.      FCBDBLKZ       X'02' FCBDBLKZ Default BLKSZ
                                        filled in by OPEN
          .... ...1      FCBDBUFO       X'01' FCBDBUFO Default BUFOF
                                        filled in by OPEN
00F1  241 Bitstring    1 FCBFLAG5       -
          1... ....      FCBMACL        X'80' FCBMACL CMS MACLIB DATA SET
          .1.. ....      FCBCMDOS       X'40' FCBCMDOS CMS DOSLIB DATA
                                        SET
00F2  242 Bitstring    1 FCBRSRV2 (2)   RESERVED for future use
00F4  244 Signed       4 FCBAIC         Number input recs in FST at OPEN
00F8  248 Character    4 FCBPRIME       PRIME TAPE ID ENTERED AT FILEDEF
00FC  252 Address      4 FCBNEXTC       Address of the next FCB in the
                                        concatenation, or zero if none
0100  256 Signed       2 FCBFSEQ        Tape File Sequence counter
0102  258 Signed       2 *              Reserved for future use
0104  260 Signed       4 FCBFWVAL       Fullword work field
0108  264 Dbl-Word     8 FCBEND (0)     - END-OF FCB,JFCB,DEB,IOB BLOCKS
          00000021       FCBENSIZ       (*-FCBSECT)/8 - SIZE OF FCB
                                        ENTRY, DOUBLEWORDS
             SPECIAL FIELDS FOR TAPE FILES ONLY
0018   24 Character    4 FCBTAPID       TAPE IDENTIFICATION
001C   28 Bitstring    1 FCBLABT        TAPE LABEL TYPE
          .... ....      FCBOFF         X'00' FCBOFF NO LABEL PROCESSING
                                        AT ALL
          .... ...1      FCBBLP         X'01' FCBBLP BYPASS LABELS - JUST
                                        POSITION TAPE
          .... ..1.      FCBSL          X'02' FCBSL IBM STANDARD LABELS
          .... .1..      FCBUSER        X'04' FCBUSER USER STANDARD
                                        LABELS
          .... .11.      FCBSUL         FCBSL+FCBUSER FCBSUL IBM AND USER
                                        STANDARD LABELS
          .... 1...      FCBNSL         X'08' FCBNSL NONSTANDARD USER
                                        LABELS
          ...1 ....      FCBNSLMD       X'10' FCBNSLMD NSL ROUTINE IS A
                                        MODULE
          ..1. ....      FCBNL          X'20' FCBNL NO LABELS
          .1.. ....      FCBAL          X'40' FCBAL ANSI LABELS
          .1.. .1..      FCBAUL         FCBAL+FCBUSER FCBAUL ANSI AND
                                        USER STANDARD LABELS
001D   29 Bitstring    1 FCBTPSW        TAPE SWITCH
          1... ....      FCBLEAVE       X'80' FCBLEAVE DO NOT REPOSITION
                                        TAPE FOR OPEN
          .1.. ....      FCBNOEOV       X'40' FCBNOEOV DO NOT DO ANY EOV
                                        PROCESSING AT ALL
          ..1. ....      FCBFVLEV       X'20' FCBFVLEV LEAVE specified on
                                        FEOV macro
          ...1 ....      FCBFVREW       X'10' FCBFVREW REWIND specified
                                        on FEOV macro
          .... 1...      FCBFEOV        X'08' FCBFEOV FEOV was issued on
                                        the current tape volume. This
                                        flag is set on during FEOV and
                                        turned off either at CLOSE time
                                        or when a new tape volume is
                                        mounted.
          .... .1..      FCBKEEP        X'04' FCBKEEP DISP KEEP specified
                                        in Filedef X'02' Reserved
001E   30 Signed       2 FCBPOS         POSITION PARAMETER
0020   32 Character    8 FCBNSLNM       NSL ROUTINE NAME
00B8  184 Address      4 FCBLABPT       POINTER TO LABSECT
00BC  188 Signed       4 FCBBLKCT       BLOCK COUNT FOR TAPE FILE
0024   36 Character    8 FCBIOOUT       - SPECIAL I/O COMMAND LIST
002C   44 Address      4 FCBIOBUF       - A(DATA BUFFER)
0030   48 Character    1 FCBCONCR       - CONSOLE COLOR CODE
0031   49 Bitstring    1 FCBCONMS       - CONSOLE MISCELLANEOUS INFO
0032   50 Signed       2 FCBIOCNT       - L'DATA BUFFER
        DATA EVENT CONTROL BLOCK

 
*** FCBSECT - Simulated OS Control Blocks
*
*     +---------------------------+---------------------------+
*   0 |         FCBNEXT           |         FCBPROC           |
*     +---------------------------+---------------------------+
*   8 |                        FCBDD                          |
*     +-------------------------------------------------------+
*  10 |                        FCBOP                          |
*     +-------------------------------------------------------+
*  18 |                       FCBDSNAM                        |
*     +-------------------------------------------------------+
*  20 |                       FCBDSTYP                        |
*     +-------------+-------------+---------------------------+
*  28 |  FCBDSMD    |  FCBDSMDC   |         FCBBUFF           |
*     +-------------+-------------+------+------+------+------+
*  30 |         FCBBYTE           |:FORM |FCBFLG|:FLG2 |:OTYP |
*     +---------------------------+------+------+------+------+
*  38 |         FCBREAD           |         FCBITEM           |
*     +---------------------------+---------------------------+
*  40 |         FCBCOUT           |         FCBWPTR           |
*     +---------------------------+------+------+------+------+
*  48 |         FCBRPTR           |FCBDEV|:RFMT |:OFMT |//////|
*     +-------------+------+------+------+------+------+------+
*  50 |  FCBRECL    |:IOFLG|:DCBCT|          FCBR13           |
*     +-------------+------+------+---------------------------+
*  58 |         FCBKEYS           |          FCBPDS           |
*     +---------------------------+---------------------------+
*  60 |                       JFCBMASK                        |
*     +--------------------+--------------------+------+------+
*  68 |     JFCBCRDT       |     JFCBXPDT       |:BIND1|:BIND2|
*     +------+------+------+------+------+------+------+------+
*  70 |:BUFNO|:BFALN|  JFCBUFL    |:EROPT|:KEYLE|//////|(077)-|
*     +------+------+-------------+------+------+------+------+
*  78 | -JFCLIMCT   |  JFCDSORG   |:RECFM|:OPTCD|  JFCBLKSI   |
*     +-------------+------+------+------+------+-------------+
*  80 |  JFCLRECL   |:IOSW |:IOSW2|///////////////////////////|
*     +-------------+------+------+---------------------------+
*  88 |         DEBTCBAD          |          SEBSAV           |
*     +---------------------------+---------------------------+
*  90 |         DEBOFLGS          |         DEBOPATB          |
*     +---------------------------+---------------------------+
*  98 |         IOBNXTAD          |          IOBECB           |
*     +---------------------------+---------------------------+
*  A0 |         DEBDCBAD          |         IOBECBPT          |
*     +---------------------------+---------------------------+
*  A8 |                        IOBCSW                         |
*     +---------------------------+---------------------------+
*  B0 |         IOBSTART          |         IOBDCBPT          |
*     +---------------------------+---------------------------+
*  B8 |                       FCBMEMBR                        |
*     +---------------------------+---------------------------+
*  C0 |         FCBOSFST          |         FCBOSDSN          |
*     +---------------------------+---------------------------+
*  C8 |         FCBXTENT          |         FCBTEOV           |
*     +---------------------------+------+------+-------------+
*  D0 |         FCBTSAVE          |:FLAG1|:VCTR |  FCBVSEQ    |
*     +---------------------------+------+------+-------------+
*  D8 |          FCBALT           |         FCBTVIPL          |
*     +---------------------------+-------------+-------------+
*  E0 |         FCBSYSPA          |  FCBSYSPL   |  FCBSYSPB   |
*     +------+------+------+------+-------------+-------------+
*  E8 |:FLAG3|:BUFOF|:RSRV1|:LBOM |         FCBVCOUT          |
*     +------+------+------+------+---------------------------+
*  F0 |:FLAG4|:FLAG5|  FCBRSRV2   |          FCBAIC           |
*     +------+------+-------------+---------------------------+
*  F8 |         FCBPRIME          |         FCBNEXTC          |
*     +-------------+-------------+---------------------------+
* 100 |  FCBFSEQ    |/////////////|         FCBFWVAL          |
*     +-------------+-------------+---------------------------+
*
*** FCBSECT - Simulated OS Control Blocks
 
*** Overlay for FCBDSNAM in FCBSECT
*
*     +---------------------------+------+------+-------------+
*  18 |         FCBTAPID          |:LABT |:TPSW |   FCBPOS    |
*     +---------------------------+------+------+-------------+
*  20 |                       FCBNSLNM                        |
*     +-------------------------------------------------------+
*  28
*
*** Overlay for FCBDSNAM in FCBSECT
 
*** Overlay for FCBMEMBR in FCBSECT
*
*     +---------------------------+---------------------------+
*  B8 |         FCBLABPT          |         FCBBLKCT          |
*     +---------------------------+---------------------------+
*  C0
*
*** Overlay for FCBMEMBR in FCBSECT
 
*** Overlay for FCBDSTYP+4 in FCBSECT
*
*                                 +---------------------------+
*     ...                      24 |        FCBIOOUT-          |
*     +---------------------------+---------------------------+
*  28 |          -(024)           |         FCBIOBUF          |
*     +------+------+-------------+---------------------------+
*  30 |:CONCR|:CONMS|  FCBIOCNT   | 34
*     +------+------+-------------+
*
*** Overlay for FCBDSTYP+4 in FCBSECT

 
Symbol         Dspl Value
-------------- ---- -----
DEBDCBAD       00A0
DEBDEBID       00A0
DEBLNGTH       0084
DEBOFLGS       0090
DEBOPATB       0094
DEBTCBAD       0088
FCBAIC         00F4
FCBAL          001C 40
FCBALT         00D8
FCBAUL         001C 44
FCBBADDN       00F0 20
FCBBATCH       0000 02
FCBBLKCT       00BC
FCBBLKSZ       007E
FCBBLP         001C 01
FCBBUFF        002C
FCBBUFOF       00E9
FCBBYSVC       0083 04
FCBBYTE        0030
FCBCASE        0082 08
FCBCATLD       0000 40
FCBCATML       0000 01
FCBCLEAV       0083 10
FCBCLOSE       0082 80
FCBCMDOS       00F1 40
FCBCNBLK       00D6 D6
FCBCON         004C 0C
FCBCONCR       0030
FCBCONMS       0031
FCBCOUT        0040
FCBCRERD       0083 20
FCBCRT         004C 1C
FCBDBLKZ       00F0 02
FCBDBUFO       00F0 01
FCBDCBCT       0053
FCBDD          0008
FCBDEV         004C
FCBDID         0000 80
FCBDIR         00D4 02
FCBDISP        00E6 88
FCBDLREC       00F0 04
FCBDOSL        0000 20
FCBDRFMT       00F0 08
FCBDSK         004C 14
FCBDSMD        0028
FCBDSMDC       002A
FCBDSNAM       0018
FCBDSORG       007A
FCBDSTYP       0020
FCBDUM         004C 00
FCBEND         0108
FCBENSIZ       0108 00000021
FCBERASE       00D4 01
FCBFEOV        001D 08
FCBFLAG1       00D4
FCBFLAG3       00E8
FCBFLAG4       00F0
FCBFLAG5       00F1
FCBFLG         0035
FCBFLG2        0036
FCBFMAST       00E8 80
FCBFORM        0034
FCBFSEQ        0100
FCBFVLEV       001D 20
FCBFVREW       001D 10
FCBFWVAL       0104
FCBINIT        0000
FCBIOBUF       002C
FCBIOCNT       0032
FCBIOOUT       0024
FCBIORD        0082 01
FCBIOSW        0082
FCBIOSW2       0083
FCBIOWR        0082 02
FCBITEM        003C
FCBKEEP        001D 04
FCBKEYS        0058
FCBLABPT       00B8
FCBLABT        001C
FCBLBOM        00EB
FCBLEAVE       001D 80
FCBLIBSV       00E8 10
FCBLRCLM       00E8 04
FCBLRCLX       00E8 08
FCBLRECL       0080
FCBLRI         00F0 40
FCBLRIXT       00F0 10
FCBMACL        00F1 80
FCBMASTR       0082 40
FCBMEMBR       00B8
FCBMMV         0083 02
FCBMTCAN       00D4 08
FCBMVFIL       0083 08
FCBMVOL        00D4 20
FCBMVPDS       0083 01
FCBNEXT        0000
FCBNEXTC       00FC
FCBNL          001C 20
FCBNOEOV       001D 40
FCBNSL         001C 08
FCBNSLMD       001C 10
FCBNSLNM       0020
FCBOFF         001C 00
FCBOFMT        004E
FCBOP          0010
FCBOPCB        0000 08
FCBOS          0000 10
FCBOSDSN       00C4
FCBOSFST       00C0
FCBOSSIM       00E8 01
FCBOTYP        0037
FCBPCH         004C 18
FCBPDS         005C
FCBPERM        0000 04
FCBPOS         001E
FCBPRIME       00F8
FCBPROC        0004
FCBPROCC       0082 20
FCBPROCO       0082 10
FCBPRPU        0020 24
FCBPTR         004C 04
FCBPVMB        0082 04
FCBRDEOF       00E8 02
FCBRDR         004C 08
FCBREAD        0038
FCBRECFM       007C
FCBRECL        0050
FCBRFMT        004D
FCBRPTR        0048
FCBRSRV1       00EA
FCBRSRV2       00F2
FCBR13         0054
FCBSCLR        00E8 20
FCBSL          001C 02
FCBSPCHK       00D4 04
FCBSUL         001C 06
FCBSYSPA       00E0
FCBSYSPB       00E6
FCBSYSPL       00E4
FCBTAP         004C 10
FCBTAPID       0018
FCBTBSP        0028
FCBTCLOS       0083 40
FCBTEOV        00CC
FCBTEOVA       00D4 40
FCBTEOVS       00D4 80
FCBTPSW        001D
FCBTSAVE       00D0
FCBTVIPL       00DC
FCBTXTL        00F0 80
FCBUSASI       00E8 40
FCBUSER        001C 04
FCBVCOUT       00EC
FCBVCTR        00D5
FCBVSAM        004C 20
FCBVSECT       00D4 10
FCBVSEQ        00D6
FCBWPTR        0044
FCBWRTSW       0083 80
FCBXTENT       00C8
IHADEB         0088
IHAIOB         00A0
IHAJFCB        0018
IOBBCSW        00A8 10
IOBBECBC       00A4 0C
IOBBECBP       00A4 0C
IOBBFLG        0098 00
IOBCSW         00A8
IOBDCBPT       00B4
IOBECB         009C
IOBECBCC       00A4
IOBECBPT       00A4
IOBEND         00B8
IOBFLAG3       00A8
IOBFLG         0098
IOBIN          0098 20
IOBIOFLG       0052
IOBNXTAD       0098
IOBOUT         0098 40
IOBSTART       00B0
IOBUPD         0098 10
JFCBCRDT       0068
JFCBDSNM       0018
JFCBFALN       0071
JFCBFTEK       0071
JFCBIND1       006E
JFCBIND2       006F
JFCBLKSI       007E
JFCBMASK       0060
JFCBUFL        0072
JFCBUFNO       0070
JFCBXPDT       006B
JFCDSORG       007A
JFCEROPT       0074
JFCEXTND       006F 02
JFCKEYLE       0075
JFCLIBSV       006F 04
JFCLIMCT       0077
JFCLRCLX       006F 08
JFCLRECL       0080
JFCMOD         006F 80
JFCM4FLG       006F 01
JFCOLDF        006F 40
JFCOPTCD       007D
JFCRECFM       007C
SEBSAV         008C