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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DEVSECT        Device Table Entry Mapping
0000    0 Signed       2 DEVADDR        - VIRTUAL DEVICE ADDRESS
0002    2 Bitstring    1 DEVFLAG        - D*1 - DEVICE FLAGS
          1... ....      DEVPSDOW       X'80' DEVPSDOW Pseudo wait bit
                                        (from WAITD)
          .1.. ....      DEVASAP        X'40' DEVASAP HNDINT/HNDIO issued
                                        with ASAP
          ..1. ....      DEVINTR        X'20' DEVINTR Interrupt received
                                        for this entry
          ...1 ....      DEVINTP        X'10' DEVINTP Interrupt processed
          .... 1...      DEVKEEP        X'08' DEVKEEP KEEP past
                                        end-of-command
          .... .1..      DEVABNKP       X'04' DEVABNKP Keep beyond ABEND
                                        processing
          .... ..1.      DEVPERST       X'02' DEVPERST Keep beyond
                                        DET/DEF processing
          .... ...1      DEVAM31        X'01' DEVAM31 SLIH invoked as
                                        AMODE=31
0002    2 Bitstring    1 DEVCLASS       Device class (DASD only)
0003    3 Bitstring    1 DEVTYPE        Device type code
0004    4 Signed       4 DEVNAME        - SYMBOLIC DEVICE NAME
0008    8 Signed       4 DEVIPRA        - INTERRUPT PROCESSING ROUTINE
                                        ADDRESS
      DEVMISC definitions for tape devices
000C   12 Signed       4 DEVMISC (0)    - MISCELLANEOUS - DEVICE
                                        DEPENDENT
000C   12 Bitstring    1 DEVFMTA        TAPEIO format code last used by
                                        TAPE or VMFPLC2 with this tape
000D   13 Bitstring    1 DEVFMTB        - TAPEIO format code last used
                                        with this tape device. This value
                                        is used in OS simulation
                                        alternate tape switching.
          0000000D       DEVMODE        DEVFMTB,1,C'X' Old name for
                                        DEVFMTB
000E   14 Bitstring    2 DEVSNS (0)     Sense Bytes 0 and 1
000E   14 Bitstring    1 DEVSNS0        from last unit check
000F   15 Bitstring    1 DEVSNS1        from this device
      DEVMISC definitions for disk devices
000C   12 Bitstring    1 DEVDFLAG       DASD flags
          1... ....      DEVDECKD       X'80' DEVDECKD ECKD capable
                                        hardware attached
000D   13 Bitstring    1 *              Reserved
000E   14 Bitstring    2 DEVTNUM        Device Type Number, e.g. x'3390'
000C   12 Signed       4 DEVPSW1        First half of saved PSW
0010   16 Dbl-Word     8 DEVCSW         CSW
0018   24 Address      4 DEVUWORD
001C   28 Address      4 DEVIBKAD       Address of INTBLOK
0020   32 Address      4 DEVIBKLN       Length of INTBLOK (bytes)
0024   36 Signed       4 DEVPSW2        Second half of saved PSW
          00000028       DEVSIZE        *-DEVSECT DEVICE TABLE SIZE (IN
                                        BYTES) |  |