NAME       : HCPRDCBK
 DESCRIPTION: Real Device Characteristics Block
 DSECT      : RDCBK
 FUNCTION   : The Real Device Characteristics Block contains
              DEVICE/CONTROL UNIT information.  This data is
              divided into two parts:
              - static device information.
              - 64 bytes of information returned from a
              RDC (Read Device Characteristics) CCW.
 LOCATED BY : RDEVRDCA Field of the RDEV.
              SYSRDCA  Field of the SYSCM
              - Address of the first RDCBK entry
 CREATED BY : RDCBK'S are dynamic and in part are created by the
              device specific initialization modules.
              RDCBK'S also acquire their data from a Read Device
              Characteristic CCW during device initialization.
 DELETED BY : RDCBK'S are created at Initialization or the
              Vary Online command and are never deleted.
 SERIALIZED : RDEV Lock
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : When using this block for FBA DASD, the
              first 8 bytes should not be included
              since the RDC CCW doesn't return this
              information.  Therefore to use this
              DSECT when issuing the RDC CCW, the data
              returned must be placed starting at
              RDCFBARE.
              Notes      : Field RDCFBARE is defined
              starting at location RDCOPER (RDCFEAT+2).

 RDCBK DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RDCBK          Real Device Characteristics Block
             The first 64 bytes contain the architected RDC info.
0000    0 Bitstring   64 RDCDATA (0)    RDC 64 BYTES RETURNED
0000    0 Bitstring    2 RDCCUID        CONTROL UNIT IDENTIFIER
0002    2 Bitstring    1 RDCCUMN        CONTROL UNIT MODEL
0003    3 Bitstring    2 RDCDVID        DEVICE IDENTIFIER (= Device TYPE)
0005    5 Bitstring    1 RDCDVMN        DEVICE MODEL
0006    6 Bitstring    4 RDCFEAT (0)    Device and storage control
0006    6 Bitstring    2 *              Device and stg control bytes 0-1
0008    8 Bitstring    1 RDCEXFC        Extended Function Capacity
          .1.. ....      RDCXRC         X'40' RDCXRC Device supports XRC
          ..1. ....      RDCPPRC        X'20' RDCPPRC Device Support PPRC
                                        CCWs
0009    9 Bitstring    1 RDCFEAT3       Device and stg control byte 3
          .1.. ....      RDCMPLF        X'40' RDCMPLF Device is attached
                                        to a control unit which supports
                                        MPLF
          ..1. ....      RDCRCACH       X'20' RDCRCACH Device is attached
                                        to a control unit which supports
                                        record cache facilities.
000A   10 Bitstring    2 RDCOSCOD (0)   OS DEVICE CODES
000A   10 Bitstring    1 RDCOSCLS       OS DEVICE CLASS CODE
000B   11 Bitstring    1 RDCOSTYP       OS DEVICE TYPE CODE
000C   12 Bitstring   28 RDCDEVF1       DEVICE SPECIFIC FIELD 1
0028   40 Bitstring    1 RDCMDRID       MDR IDENTIFIER
0029   41 Bitstring    1 RDCOBRID       OBR IDENTIFIER
002A   42 Bitstring   22 RDCDEVF2       DEVICE SPECIFIC FIELD 2
          00000040       RDCDALEN       (*-RDCDATA) LENGTH OF RDC DATA
                                        RETURNED
             Static device information
0040   64 Address      4 RDCNEXT        ADDR OF NEXT RDCBK IN CHAIN
0044   68 Character    4 RDCDCHAR       Device ID in EBCDIC.
0048   72 Bitstring    1 RDCFLGS (0)    DEVICE STATUS FLAG
0048   72 Bitstring    1 RDCSTATS       DEVICE RDC STATUS
          1... ....      RDCSUPT        X'80' RDCSUPT DEVICE SUPPORTS RDC
                                        CCW
          .1.. ....      RDCNCRNT       X'40' RDCNCRNT RDCBK IS NOT
                                        CURRENT FOR DEVICE
          ..1. ....      RDCOFFSP       X'20' RDCOFFSP ERP should be done
                                        for this ... device when it is
                                        offline.
          ...1 ....      RDCFBA         X'10' RDCFBA RDCBK is for an FBA
                                        DASD
          .... ...1      RDCSSUPT       X'01' RDCSSUPT DEVICE SHOULD
                                        SUPPORT RDC CCW
0049   73 Bitstring    1 RDCCUFT        Control unit features flag
          1... ....      RDCCASS        X'80' RDCCASS Device is attached
                                        to a caching control unit.
          .1.. ....      RDCSICS        X'40' RDCSICS Device is attached
                                        to a control unit which supports
                                        special intercept condition.
          ..1. ....      RDCNOSR        X'20' RDCNOSR Device is attached
                                        to a control unit which does not
                                        support suspend/resume
          ...1 ....      RDCASYNC       X'10' RDCASYNC Device is attached
                                        to a control unit which supports
                                        asynchronous processing.
          .... 1...      RDCRSTNT       X'08' RDCRSTNT Device is attached
                                        to a control unit which supports
                                        reset notification processing.
          .... .1..      RDCCUIBK       X'04' RDCCUIBK Device is attached
                                        to a control unit which is
                                        described by a CUIBK
          .... ..1.      RDCFLASH       X'02' RDCFLASH Device supports
                                        FLASHCOPY VM/XA INTERNAL DEVICE
                                        TYPE CODES
004A   74 Bitstring    1 RDCDVCLS       VM/XA DEVICE CLASS CODE
004B   75 Bitstring    1 RDCDVTYP       VM/XA DEVICE TYPE CODE
004C   76 Bitstring    1 RDCDVFTR       VM/XA DEVICE FEATURE CODE
                                        Additional Initialization
                                        Verification Fields
004D   77 Bitstring    1 RDCRDMN        USER DEFINED DEVICE MODEL NUMBER
004E   78 Bitstring    1 RDCRC          Invalid I/O configuration id.
004F   79 Bitstring    1 RDCDVSCL       VM/ESA device subclass code CP
                                        SYSTEM SERVICES AREA
0050   80 Address      4 RDCERPA        ERROR RECOVERY PROCEDURE ADDRESS
0054   84 Address      4 RDCERSA        ERROR RECOVERY SPECIFIC ADDRESS
0058   88 Address      4 RDCCRSA        CHANNEL ERROR RECOVERY SPEC. ADDR
005C   92 Address      4 RDCCPTA        CHANNEL PROGRAM TABLE ADDRESS
0060   96 Address      4 RDCCMTBA       DEVICE MANAGEMENT COMMAND TABLE @
0064  100 Address      4 RDCLERPA       LIMITED ERROR RECOVERY PROC ADDR
0068  104 Address      4 RDCLERSA       LIMITED ERROR RECOVERY SPEC ADDR
006C  108 Address      4 RDCSQUY        SENSE DATA QUERY ROUTINE ADDR
0070  112 Address      4 RDCHERSA       HPF error recovery specific addr
0074  116 Signed       4 *              Reserved for IBM use
             Device Specific Area
0078  120 Bitstring   80 RDCDSPEC       Device specific area
          000000C8       RDCLEN         (*-RDCBK) LENGTH OF THE RDCBK IN
                                        BYTES
          00000019       RDCSIZE        (*-RDCBK+7)/8 LENGTH OF THE RDCBK
                                        IN DOUBLEWORDS
             The area below is for DASD redefinitons:
0078  120 Bitstring    2 *              DASD - IBM RESERVED
007A  122 Bitstring    2 RDCPCYL        DASD - NUMBER OF PAGES/CYLINDER
007C  124 Signed       2 RDCDEVLM       DASD (CP-owned only) Number of
                                        slots to be allocated before
                                        switching to another DASD.
007E  126 Signed       2 RDCMAXPR       DASD (CP-owned only) Theoretical
                                        paging rate based on average SEEK
                                        time divided into 1 second
                                        multipled by 10.
0080  128 Signed       2 RDCMASK        DASD (CP-owned only) Used as a
                                        mask for slot allocation of
                                        records on cylinder and head
                                        zero. It is a mask for the total
                                        number of records that are not
                                        used for that track.
0082  130 Bitstring    1 RDCPPTRK       DASD - Number of pages/track 4K
0083  131 Bitstring    1 RDCTPGEX       DASD (CP-owned only) Count of
                                        DASD paging exposures.
          00000001       RDCSNGEX       1 DASD (CP-owned only) Code used
                                        to determine if the DASD is a
                                        single exposure device.
0084  132 Bitstring    1 RDCPAGFG       DASD (CP-owned only) Paging flags
                                        to indicate more characteristics
                                        about the DASD.
          .... ...1      RDCCPOWN       X'01' RDCCPOWN DASD (CP-owned
                                        only) Indicates that this DASD is
                                        fully supported by CP.
          .... ..1.      RDCMINID       X'02' RDCMINID DASD (CP-owned
                                        only) Indicates that this DASD
                                        supports paging I/O for
                                        minidisk-pools.
          .... .1..      RDCPAGOY       X'04' RDCPAGOY DASD (CP-owned
                                        only) Used mainly for 3350 11/21
                                        which indicates that paging only
                                        space is allowed for this volume.
0085  133 Bitstring    1 RDCFLAG        DASD flags
          .... ..1.      RDCLRE         X'02' RDCLRE DASD This
                                        DASD/control unit combination
                                        supports the Locate Record
                                        Extended CCW
          .... ...1      RDCMDC         X'01' RDCMDC DASD This device
                                        type is supported by minidisk
                                        cache.
0086  134 Bitstring    1 * (2)          Reserved for IBM use
0088  136 Address      4 RDCCPVOL       DASD (CP-owned only) Address of
                                        the queue that this DASD would
                                        reside on if it is fully CP
                                        supported. The queue is located
                                        in HCPPGD.
008C  140 Signed       4 RDCMLOAD       DASD (CP-owned only) Initial
                                        MLOAD for paging DASD based on
                                        average SEEK time divided by 16
                                        micro seconds.
0090  144 Bitstring    1 RDCNPSEC (14)  DASD (CP-owned only) Sector
                                        numbers for a CP-owned or
                                        minidisk-pool DASD that is
                                        formatted with 4k records without
                                        pad records.
009E  158 Bitstring    1 RDCSECTR (14)  DASD (CP-owned only) The sector
                                        numbers for a CP-owned DASD that
                                        was formatted with CPFORMAT. The
                                        tracks are formatted with pad
                                        records.
00AC  172 Signed       4 RDCDPSBK       Address of DPSBK table. Contains
                                        the number of records per track
                                        of each standard or non-standard
                                        record size.
00B0  176 Signed       4 RDCQRTIM       Max number of minutes to respond
                                        to a Quiesce/Resume request
00B4  180 Bitstring   20 *              Reserved for IBM use
     *** Bytes defined for CKD/ECKD DASD RDC Features field
0006    6 Bitstring    1 RDCVFAC        Program-visible facilities
          .... 1...      RDCSSCSP       X'08' RDCSSCSP Set System
                                        Characteristics is supported
          .... .1..      RDCSSCRC       X'04' RDCSSCRC Set System
                                        Characteristics has been received
                                        for this Path Group
          .... ..1.      RDCPRFX        X'02' RDCPRFX Prefix CCW
                                        supported & enabled
0007    7 Bitstring    1 RDCVFAC2       Program-visible facilities 2
          .1.. ....      RDCVPAVU       X'40' RDCVPAVU PAV is unsupported
                                        for this DASD, only valid if
                                        RDCSSCRC is set
0008    8 Bitstring    1 *              Reserved for future IBM use
0009    9 Bitstring    1 RDCSFEAT       SUBSYSTEM FEATURES SUPPORTED
          1... ....      RDCCFW         X'80' RDCCFW SUPPORTS
                                        NON-RETENTIVE DATA (CACHE FAST
                                        WRITE)
          .1.. ....      RDCCFLF        X'40' RDCCFLF SUPPORTS LOCK
                                        FACILITY (CFLF) RPQ
          ..1. ....      RDCRCS         X'20' RDCRCS SUPPORTS RECORD
                                        CACHE RPQ
          .... 1...      RDCDUP         X'08' RDCDUP Supports Duplex
                                        Pairs
          .... .1..      RDCDFW         X'04' RDCDFW SUPPORTS DASD FAST
                                        WRITE
     *** Bytes defined for CKD/ECKD DASD RDC Field 1
000C   12 Bitstring    2 RDCMCYL        NUMBER OF PRIMARY CYL
000E   14 Bitstring    2 RDCTPCYL       NUMBER OF TRACKS PER CYLINDER
0010   16 Bitstring    1 RDCSECT        NUMBER OF SECTORS
0011   17 Bitstring    3 RDCTOTRK       TOTAL TRACK LENGTH USABLE
0014   20 Bitstring    2 RDCHA          LENGTH OF HOME ADDR AND RECRD
                                        ZERO
0016   22 Bitstring    1 RDCMODE        TRACK CAP CALCULATION FORMULA
                                        CODE
0017   23 Bitstring    5 RDCMDFR        TRACK CAP CALCULATION FACTORS
001C   28 Bitstring    2 RDCALTCL       ADDR OF FIRST ALTERNATE CYLINDER
001E   30 Bitstring    2 RDCALTRX       NUMBER OF ALTERNATE TRACKS
0020   32 Bitstring    2 RDCDIAG        ADDR OF FIRST DIAGNOSTIC CYLINDER
0022   34 Bitstring    2 RDCDIAGN       NUMBER OF DIAGNOSTIC TRACKS
0024   36 Bitstring    2 RDCDVCYL       ADDRESS OF FIRST DEVICE CYLINDER
0026   38 Bitstring    2 RDCDVTRK       NUMBER OF DEVICE SUPPORT TRACKS
     *** Bytes defined for CKD/ECKD DASD RDC Field 2
002A   42 Bitstring    1 RDCCUTYP       CONTROL UNIT TYPE CODE
002B   43 Bitstring    1 RDCMRTPL       MAX READ TRACKSET PARAMETER
                                        LENGTH
002C   44 Bitstring    2 RDCMXR0        MAXIMUM RECORD ZERO DATA LENGTH
002E   46 Bitstring    1 RDC46          DASD SPECIFIC RESERVED
002F   47 Bitstring    1 RDCTRSSZ       TRACK SET SIZE
0030   48 Bitstring    1 RDCATCCF       ADDITIONAL TRACK CAPACITY
                                        CALCULATION FACTOR
0031   49 Bitstring    2 RDC4950        DASD SPECIFIC RESERVED
0033   51 Bitstring    1 RDCLTHRS       CONCOPY LOWER THRESHOLD
0034   52 Bitstring    1 RDC52          DASD SPECIFIC RESERVED
0035   53 Bitstring    1 RDCUTHRS       CONCOPY UPPER THRESHOLD
0036   54 Bitstring    1 RDCDCUF        Device and control unit features
          .... .1..      RDCMIRR        X'04' RDCMIRR Device is Mirroring
                                        capable
0037   55 Bitstring    1 RDC55          DASD SPECIFIC RESERVED
0038   56 Bitstring    1 RDCRCUC        REAL CU CODE
0039   57 Bitstring    1 RDCOBRCO       OBR CODE
003A   58 Bitstring    2 RDC5859        DASD SPECIFIC RESERVED
003C   60 Signed       4 RDCMCYL32      NUMBER OF PRIMARY CYLINDERS
             The area below is for FBA DASD:
     *** Bytes defined for FBA RDCFEAT field.
0006    6 Bitstring    2 *              Reserved for IBM use.
0008    8 Bitstring    1 RDCFBARE (0)   Start of FBA architected area
0008    8 Bitstring    1 RDCOPER        Device operation modes
          .1.. ....      RDCOVRRN       X'40' RDCOVRRN Overrunnable
                                        device
          ..1. ....      RDCBURST       X'20' RDCBURST Burst mode device
          ...1 ....      RDCDATCH       X'10' RDCDATCH Data chaining
                                        supported
0009    9 Bitstring    1 RDCFBAFT       Features
          .1.. ....      RDCREMOV       X'40' RDCREMOV Removable media
                                        feature
          ..1. ....      RDCRRLSE       X'20' RDCRRLSE Reserve/release
                                        feature
          .... 1...      RDCMOVAM       X'08' RDCMOVAM Movable access
                                        mechanism
          .... .1..      RDCFIXHM       X'04' RDCFIXHM Fixed head
                                        mechanism
     *** Bytes defined for FBA DASD RDC Field 1
000C   12 Bitstring    2 RDCRECSZ       Physical record size
000E   14 Bitstring    4 RDCBLKCG       Blocks per cyclical group (track)
0012   18 Bitstring    4 RDCBLKAP       Blocks per access position (cyl)
0016   22 Bitstring    4 RDCBLKMA       Blocks under movable access
001A   26 Bitstring    4 RDCBLKFA       Blocks under fixed access
001E   30 Bitstring    1 * (2)          Reserved for IBM use
0020   32 Bitstring    2 RDCBLKCE       Blocks in CE area
0022   34 Bitstring    1 * (6)          Reserved for IBM use
             The area below is for tape drives:
     *** Bytes defined for TAPE RDCFEAT field.
0006    6 Bitstring    2 *              Reserved for IBM use.
0008    8 Bitstring    1 RDCFET3        RDC Data byte 8
          ...1 ....      RDCTRAM        X'10' RDCTRAM Tape has
                                        Asyncronous Msg support
          .... 1...      RDCTCUIR       X'08' RDCTCUIR Tape supports CUIR
                                        (SIC)
          .... .1..      RDCCPNOP       X'04' RDCCPNOP Supports Channel
                                        Path NOP command
0009    9 Bitstring    1 RDCFETFE       Features
          .1.. ....      RDCCMPCT       X'40' RDCCMPCT RDC DATA BYTE 9
                                        COMPACTION IND.
          ...1 ....      RDCLIBON       X'10' RDCLIBON Library Manager
                                        online
          .... 1...      RDCLAFIN       X'08' RDCLAFIN Library Attachment
                                        Ftr installed
     *** Bytes defined for TAPE RDC Field 1
000C   12 Bitstring   28 RDCTAPE1 (0)   TAPE SPECIFIC RESERVED
000C   12 Bitstring    5 *              Reserved
0011   17 Bitstring    1 RDCFET4        RDC Data Byte 17
          ...1 ....      RDCB17B3       X'10' RDCB17B3 RDC Data Byte 17
                                        Bit 3
0012   18 Bitstring   13 *              Reserved
001F   31 Bitstring    1 RDCFET5        RDC Data Byte 31
          ...1 ..11      RDCENCR        X'13' RDCENCR Supports Encryption
          ...1 .1.1      RDCENCR2       X'15' RDCENCR2 Supports
                                        Encryption 2
0020   32 Bitstring    3 RDCLIBSQ       Library Sequence Number
0023   35 Bitstring    1 RDCLIBID       Library Subsystem ID
0024   36 Bitstring    4 *              Reserved
     *** Bytes defined for TAPE RDC Field 2
002A   42 Bitstring   22 RDCTAPE2       TAPE SPECIFIC RESERVED
             New Tape Product (NTP) redefinitions:
0006    6 Bitstring    1 RDCFRMAT       RDC Format 6
          .... ....      RDCOLDT        X'00' RDCOLDT Defines Tape RDC
                                        info before NTP
          .... ...1      RDCNTP         X'01' RDCNTP Defines NTP RDC
                                        information
0007    7 Bitstring    3 RDCSSF1 (0)    Subsystem Facilities 1 7-9
0007    7 Bitstring    1 *              No fields defined 7
0008    8 Bitstring    1 *              Same as RDCFET3, above 8
0009    9 Bitstring    1 *              Same as RDCFETFE, above 9
000A   10 Bitstring    2 *              Reserved 10-11
000C   12 Bitstring    4 RDCSSF2 (0)    Subsystem Facilities 2 12-15
000C   12 Bitstring    1 RDCSSF20       SSF2, byte 0 12
000D   13 Bitstring    1 RDCSSF21       SSF2, byte 1 13
          1... ....      RDCRDFWD       X'80' RDCRDFWD Device supports
                                        Read Forward CCW
          .... .1..      RDCMODST       X'04' RDCMODST DEVICE SUPPORTS
                                        MODE SET/SENSE CCW
000E   14 Bitstring    1 RDCSSF22       SSF2, byte 2 14
          ..1. ....      RDCTSSCS       X'20' RDCTSSCS Tape Set System
                                        Characteristics is supported
          .... .1..      RDCMEDSC       X'04' RDCMEDSC Medium Sense and
                                        Chars supported
000F   15 Bitstring    1 RDCSSF23       SSF2, byte 3 15
0010   16 Bitstring    1 RDCDVTYM       Device Type-Model 16
0011   17 Bitstring    2 RDCDVMPL       Device Manufacturer and 17-18
                                        Plant of Manufacture
0013   19 Bitstring    3 RDCDVSEQ       Device Sequence Number 19-21
0016   22 Bitstring    1 RDCCUTYM       Control Unit Type-Model 22
0017   23 Bitstring    2 RDCCUMPL       Control Unit Manufacturer 23-24
                                        and Plant of Manufacture
0019   25 Bitstring    3 RDCCUSEQ       Control Unit Sequence Number25-27
001C   28 Bitstring    1 *              Reserved for IBM use 28
001D   29 Bitstring    1 RDCLBTYM       Library Type-Model 29
001E   30 Bitstring    1 *              Reserved for IBM use 30
001F   31 Bitstring    1 RDCEPI         ERDS Physical Identifer 31
0020   32 Bitstring    3 *              Same as RDCLIBSQ, above 32-34
0023   35 Bitstring    1 *              Same as RDCLIBID, above 35
0024   36 Bitstring    2 RDCVLLID       Volume Loader Identifier 36-37
0026   38 Bitstring    1 RDCDEVID       Device Identifier 38
0027   39 Bitstring    1 *              Reserved 39
0028   40 Bitstring    1 *              Same as RDCMDRID, above 40
0029   41 Bitstring    1 *              Same as RDCOBRID, above 41
002A   42 Bitstring    1 RDCDVCOD       OS Device Code=Class=Type 42

          
*** RDCBK - Real Device Characteristics Block
*
*     +-------------+------+-------------+------+-------------+
*   0 |  RDCCUID    |:CUMN |  RDCDVID    |:DVMN |/////////////|
*     +------+------+------+------+------+------+-------------+
*   8 |:EXFC |:FEAT3|:OSCLS|:OSTYP|                           |
*     +------+------+------+------+                           |
*  10 |                                                       |
*     =                       RDCDEVF1                        =
*     |                                                       |
*     +------+------+-----------------------------------------+
*  28 |:MDRID|:OBRID|                                         |
*     +------+------+                                         |
*     |                       RDCDEVF2                        |
*     |                                                       |
*     +---------------------------+---------------------------+
*  40 |         RDCNEXT           |         RDCDCHAR          |
*     +------+------+------+------+------+------+------+------+
*  48 |:STATS|:CUFT |:DVCLS|:DVTYP|:DVFTR|:RDMN |RDCRC |:DVSCL|
*     +------+------+------+------+------+------+------+------+
*  50 |         RDCERPA           |         RDCERSA           |
*     +---------------------------+---------------------------+
*  58 |         RDCCRSA           |         RDCCPTA           |
*     +---------------------------+---------------------------+
*  60 |         RDCCMTBA          |         RDCLERPA          |
*     +---------------------------+---------------------------+
*  68 |         RDCLERSA          |         RDCSQUY           |
*     +---------------------------+---------------------------+
*  70 |         RDCHERSA          |///////////////////////////|
*     +---------------------------+---------------------------+
*  78 |                                                       |
*     =                       RDCDSPEC                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  C8
*
*** RDCBK - Real Device Characteristics Block
          
*** Overlay for RDCDSPEC in RDCBK
*
*     +-------------+-------------+-------------+-------------+
*  78 |/////////////|  RDCPCYL    |  RDCDEVLM   |  RDCMAXPR   |
*     +-------------+------+------+------+------+-------------+
*  80 |  RDCMASK    |:PPTRK|:TPGEX|:PAGFG|:FLAG |/////////////|
*     +-------------+------+------+------+------+-------------+
*  88 |         RDCCPVOL          |         RDCMLOAD          |
*     +---------------------------+---------------------------+
*  90 |                       RDCNPSEC                        |
*     |                                         +-------------+
*  98 |                                         |             |
*     +-----------------------------------------+             |
*     |                       RDCSECTR                        |
*     |                           +---------------------------+
*  A8 |                           |         RDCDPSBK          |
*     +---------------------------+---------------------------+
*  B0 |         RDCQRTIM          |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  C8
*
*** Overlay for RDCDSPEC in RDCBK
          
*** Overlay for RDCFEAT in RDCBK
*
*                                               +------+------+
*   0 ...                                     6 |:VFAC |:VFAC2|
*     +------+------+---------------------------+------+------+
*   8 |//////|:SFEAT| A
*     +------+------+
*
*** Overlay for RDCFEAT in RDCBK
          
*** Overlay for RDCDEVF1 in RDCBK
*
*                                 +-------------+-------------+
*   8 ...                       C |  RDCMCYL    |  RDCTPCYL   |
*     +------+--------------------+-------------+------+------+
*  10 |:SECT |     RDCTOTRK       |   RDCHA     |:MODE |(017)-|
*     +------+--------------------+-------------+------+------+
*  18 |         -RDCMDFR          |  RDCALTCL   |  RDCALTRX   |
*     +-------------+-------------+-------------+-------------+
*  20 |  RDCDIAG    |  RDCDIAGN   |  RDCDVCYL   |  RDCDVTRK   |
*     +-------------+-------------+-------------+-------------+
*  28
*
*** Overlay for RDCDEVF1 in RDCBK
          
*** Overlay for RDCDEVF2 in RDCBK
*
*                   +------+------+-------------+------+------+
*  28 ...        2A |:CUTYP|:MRTPL|  RDCMXR0    |RDC46 |:TRSSZ|
*     +------+------+------+------+------+------+------+------+
*  30 |:ATCCF|  RDC4950    |:LTHRS|RDC52 |:UTHRS|:DCUF |RDC55 |
*     +------+------+------+------+------+------+------+------+
*  38 |:RCUC |:OBRCO|  RDC5859    |        RDCMCYL32          |
*     +------+------+-------------+---------------------------+
*  40
*
*** Overlay for RDCDEVF2 in RDCBK
          
*** Overlay for RDCFEAT in RDCBK
*
*                                               +-------------+
*   0 ...                                     6 |/////////////|
*     +------+------+---------------------------+-------------+
*   8 |:OPER |:FBAFT| A
*     +------+------+
*
*** Overlay for RDCFEAT in RDCBK
          
*** Overlay for RDCDEVF1 in RDCBK
*
*                                 +-------------+-------------+
*   8 ...                       C |  RDCRECSZ   | RDCBLKCG-   |
*     +-------------+-------------+-------------+-------------+
*  10 |   -(00E)    |         RDCBLKAP          | RDCBLKMA-   |
*     +-------------+---------------------------+-------------+
*  18 |   -(016)    |         RDCBLKFA          |/////////////|
*     +-------------+---------------------------+-------------+
*  20 |  RDCBLKCE   |/////////////////////////////////////////|
*     +-------------+-----------------------------------------+
*  28
*
*** Overlay for RDCDEVF1 in RDCBK
          
*** Overlay for RDCFEAT in RDCBK
*
*                                               +-------------+
*   0 ...                                     6 |/////////////|
*     +------+------+---------------------------+-------------+
*   8 |:FET3 |:FETFE| A
*     +------+------+
*
*** Overlay for RDCFEAT in RDCBK
          
*** Overlay for RDCDEVF1 in RDCBK
*
*                                 +---------------------------+
*     ...                       C |///////////////////////////|
*     +------+------+-------------+---------------------------+
*  10 |//////|:FET4 |/////////////////////////////////////////|
*     +------+------+//////////////////////////////////+------+
*  18 |////////////////////////////////////////////////|:FET5 |
*     +--------------------+------+--------------------+------+
*  20 |     RDCLIBSQ       |:LIBID|///////////////////////////|
*     +--------------------+------+---------------------------+
*  28
*
*** Overlay for RDCDEVF1 in RDCBK
          
*** Overlay for RDCDEVF2 in RDCBK
*
*                   +-----------------------------------------+
*  28 ...        2A |                                         |
*     +-------------+                                         |
*     |                       RDCTAPE2                        |
*     |                                                       |
*     +-------------------------------------------------------+
*  40
*
*** Overlay for RDCDEVF2 in RDCBK
          
*** Overlay for RDCFEAT in RDCBK
*
*                                               +------+------+
*   0 ...                                     6 |:FRMAT|//////|
*     +------+------+-------------+------+------+------+------+
*   8 |//////|//////|/////////////|:SSF20|:SSF21|:SSF22|:SSF23|
*     +------+------+------+------+------+------+------+------+
*  10 |:DVTYM|  RDCDVMPL   |     RDCDVSEQ       |:CUTYM|(017)-|
*     +------+-------------+------+------+------+------+------+
*  18 |-(017)|     RDCCUSEQ       |//////|:LBTYM|//////|RDCEPI|
*     +------+-------------+------+------+------+------+------+
*  20 |////////////////////|//////|  RDCVLLID   |:DEVID|//////|
*     +------+------+------+------+-------------+------+------+
*  28 |//////|//////|:DVCOD| 2B
*     +------+------+------+
*
*** Overlay for RDCFEAT in RDCBK

 
Symbol         Dspl Value
-------------- ---- -----
RDCALTCL       001C
RDCALTRX       001E
RDCASYNC       0049 10
RDCATCCF       0030
RDCBLKAP       0012
RDCBLKCE       0020
RDCBLKCG       000E
RDCBLKFA       001A
RDCBLKMA       0016
RDCBURST       0008 20
RDCB17B3       0011 10
RDCCASS        0049 80
RDCCFLF        0009 40
RDCCFW         0009 80
RDCCMPCT       0009 40
RDCCMTBA       0060
RDCCPNOP       0008 04
RDCCPOWN       0084 01
RDCCPTA        005C
RDCCPVOL       0088
RDCCRSA        0058
RDCCUFT        0049
RDCCUIBK       0049 04
RDCCUID        0000
RDCCUMN        0002
RDCCUMPL       0017
RDCCUSEQ       0019
RDCCUTYM       0016
RDCCUTYP       002A
RDCDALEN       002A 00000040
RDCDATA        0000
RDCDATCH       0008 10
RDCDCHAR       0044
RDCDCUF        0036
RDCDEVF1       000C
RDCDEVF2       002A
RDCDEVID       0026
RDCDEVLM       007C
RDCDFW         0009 04
RDCDIAG        0020
RDCDIAGN       0022
RDCDPSBK       00AC
RDCDSPEC       0078
RDCDUP         0009 08
RDCDVCLS       004A
RDCDVCOD       002A
RDCDVCYL       0024
RDCDVFTR       004C
RDCDVID        0003
RDCDVMN        0005
RDCDVMPL       0011
RDCDVSCL       004F
RDCDVSEQ       0013
RDCDVTRK       0026
RDCDVTYM       0010
RDCDVTYP       004B
RDCENCR        001F 13
RDCENCR2       001F 15
RDCEPI         001F
RDCERPA        0050
RDCERSA        0054
RDCEXFC        0008
RDCFBA         0048 10
RDCFBAFT       0009
RDCFBARE       0008
RDCFEAT        0006
RDCFEAT3       0009
RDCFETFE       0009
RDCFET3        0008
RDCFET4        0011
RDCFET5        001F
RDCFIXHM       0009 04
RDCFLAG        0085
RDCFLASH       0049 02
RDCFLGS        0048
RDCFRMAT       0006
RDCHA          0014
RDCHERSA       0070
RDCLAFIN       0009 08
RDCLBTYM       001D
RDCLEN         0078 000000C8
RDCLERPA       0064
RDCLERSA       0068
RDCLIBID       0023
RDCLIBON       0009 10
RDCLIBSQ       0020
RDCLRE         0085 02
RDCLTHRS       0033
RDCMASK        0080
RDCMAXPR       007E
RDCMCYL        000C
RDCMCYL32      003C
RDCMDC         0085 01
RDCMDFR        0017
RDCMDRID       0028
RDCMEDSC       000E 04
RDCMINID       0084 02
RDCMIRR        0036 04
RDCMLOAD       008C
RDCMODE        0016
RDCMODST       000D 04
RDCMOVAM       0009 08
RDCMPLF        0009 40
RDCMRTPL       002B
RDCMXR0        002C
RDCNCRNT       0048 40
RDCNEXT        0040
RDCNOSR        0049 20
RDCNPSEC       0090
RDCNTP         0006 01
RDCOBRCO       0039
RDCOBRID       0029
RDCOFFSP       0048 20
RDCOLDT        0006 00
RDCOPER        0008
RDCOSCLS       000A
RDCOSCOD       000A
RDCOSTYP       000B
RDCOVRRN       0008 40
RDCPAGFG       0084
RDCPAGOY       0084 04
RDCPCYL        007A
RDCPPRC        0008 20
RDCPPTRK       0082
RDCPRFX        0006 02
RDCQRTIM       00B0
RDCRC          004E
RDCRCACH       0009 20
RDCRCS         0009 20
RDCRCUC        0038
RDCRDFWD       000D 80
RDCRDMN        004D
RDCRECSZ       000C
RDCREMOV       0009 40
RDCRRLSE       0009 20
RDCRSTNT       0049 08
RDCSECT        0010
RDCSECTR       009E
RDCSFEAT       0009
RDCSICS        0049 40
RDCSIZE        0078 00000019
RDCSNGEX       0083 00000001
RDCSQUY        006C
RDCSSCRC       0006 04
RDCSSCSP       0006 08
RDCSSF1        0007
RDCSSF2        000C
RDCSSF20       000C
RDCSSF21       000D
RDCSSF22       000E
RDCSSF23       000F
RDCSSUPT       0048 01
RDCSTATS       0048
RDCSUPT        0048 80
RDCTAPE1       000C
RDCTAPE2       002A
RDCTCUIR       0008 08
RDCTOTRK       0011
RDCTPCYL       000E
RDCTPGEX       0083
RDCTRAM        0008 10
RDCTRSSZ       002F
RDCTSSCS       000E 20
RDCUTHRS       0035
RDCVFAC        0006
RDCVFAC2       0007
RDCVLLID       0024
RDCVPAVU       0007 40
RDCXRC         0008 40
RDC46          002E
RDC4950        0031
RDC52          0034
RDC55          0037
RDC5859        003A