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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure DTFX DTF Extension
0000 0 Character 8 DTFXIDEN EYE CATCHER
00000008 DTFXCCB * IORB IN DTF EXTENSION
00000008 DTFXCCBI * CCB IN IORB
0008 8 Character 2 DTFXCBRC RESIDUAL COUNT
000A 10 Character 2 DTFXCBTI TRANSMISSION INFO
1... .... DTFXTRAF X'80' DTFXTRAF TRAFFIC BIT
000C 12 Character 2 DTFXCBST STATUS BITS
000E 14 Character 2 DTFXCBTC TYPE CODE
.... 1... DTFXECBI X'08' DTFXECBI ECB POINTER IS
PRESENT
.... .1.. DTFXIORB X'04' DTFXIORB IORB INDICATOR
0010 16 Character 1 DTFXCBLI LIOCS BITS
0011 17 Character 3 DTFXCCWA CCW POINTER
0014 20 Character 1 DTFXCBPI PIOCS BITS
0015 21 Character 3 DTFXCWCS CCW IN CSW
00000018 DTFXIOFL * FIX LIST POINTER
0018 24 Character 1 DTFXRBFL IORB FLAGS
0019 25 Character 3 DTFXRBPT FIX LIST POINTER
001C 28 Character 4 * RESERVED FOR IORB USE
0020 32 Character 4 * PTR TO CCB FOR WAIT POSTING
0024 36 Character 4 DTFXRSV1 RESERVED FOR IORB EXPANSION
00000028 DTFXFLS1 * FIX LIST 1
00000028 DTFXFLB1 * IORB FIX LIST
0028 40 Character 1 DTFXFBLF LOWER FLAG
0029 41 Character 3 DTFXFBLP LOWER IORB PTR
002C 44 Character 1 DTFXFBUF UPPER FLAG
002D 45 Character 3 DTFXFBUP UPPER IORB PTR
00000030 DTFXFLC1 * CCW FIX LIST
0030 48 Character 1 DTFXC1LF LOWER FLAG
0031 49 Character 3 DTFXC1LP LOWER CCW PTR
0034 52 Character 1 DTFXC1UF UPPER FLAG
0035 53 Character 3 DTFXC1UP UPPER CCW PTR
00000038 DTFXFLD1 * DATA AREA FIX LIST 1
0038 56 Character 1 DTFXD1LF LOWER FLAG
0039 57 Character 3 DTFXD1LP LOWER DATA PTR
003C 60 Character 1 DTFXD1UF UPPER FLAG
003D 61 Character 3 DTFXD1UP UPPER DATA PTR
00000040 DTFXFLE1 * ECB FIX LIST 1
0040 64 Character 1 DTFXE1LF LOWER FLAG
0041 65 Character 3 DTFXE1LP LOWER ECB PTR
0044 68 Character 1 DTFXE1UF UPPER FLAG
0045 69 Character 3 DTFXE1UP UPPER ECB PTR
00000048 DTFXFLG1 * FLAG BYTES
0048 72 Character 1 DTFXFLF1 END OF FIX LIST
0049 73 Character 1 DTFXFL10 SSR CONTROL FLAGS
1... .... DTFXSSHD X'80' DTFXSSHD HOLD=YES SPECIFIED
IN DTF
.1.. .... DTFXSSLC X'40' DTFXSSLC SSR TO OPERATE IN
LOCATE MODE
..1. .... DTFXSSFT X'20' DTFXSSFT SSR FIRST ENTRY
TAKEN SWITCH
...1 .... DTFXSSFW X'10' DTFXSSFW FORCED WRITES
REQUIRED
.... 1... DTFXRPS X'08' DTFXRPS RPS DEVICE
.... .1.. DTFXNHRB X'04' DTFXNHRB DON'T UPDATE HIGH
RBA
.... ..1. DTFX1411 X'02' DTFX1411 DEVICE IS A 2311
OR 2314 NOTES : 2311 and 2314
DASD are not supported.
.... ...1 DTFXNOMT X'01' DTFXNOMT MULTI-TRACK READ
COUNT AHEAD NOT TO BE DONE
004A 74 Character 1 DTFXFL20 CCW INITIALIZATION STATE
1... .... DTFXCCRD X'80' DTFXCCRD CCWS INITIALIZED
FOR READ
.1.. .... DTFXCCWT X'40' DTFXCCWT CCWS INITIALIZED
FOR FORMATTED WRITE
..1. .... DTFXCCWU X'20' DTFXCCWU CCWS INITIALIZED
FOR UNFORMATTED WRITE
...1 .... DTFXCCRC X'10' DTFXCCRC CCWS INITIALIZED
FOR READ COUNT
004B 75 Character 1 DTFXFL30 MORE FLAGS
1... .... DTFXSSSK X'80' DTFXSSSK ERROPT=SKIP FOR
DTFSD
.1.. .... DTFXSSIG X'40' DTFXSSIG ERROPT=IGNORE FOR
DTFSD
..1. .... DTFXERNM X'20' DTFXERNM ERROPT=NAME FOR
DTFSD
...1 .... DTFXWORK X'10' DTFXWORK WORKA=YES FOR
DTFSD
.... 1... DTFXTRNC X'08' DTFXTRNC TRUNCS=YES
SPECIFIED
.... .1.. DTFXUPDT X'04' DTFXUPDT UPDATE=YES
SPECIFIED
.... ..1. DTFXNIOA X'02' DTFXNIOA NO IOAREAS
SPECIFIED
.... ...1 DTFXVYES X'01' DTFXVYES VERIFY=YES
SPECIFIED FOR DTFSD - ALWAYS ON
FOR CP
0000004C DTFXDSAP * PTR TO DSA
004C 76 Character 4 DTFXDUMY DUMMY TO GET DSAP GENNED
0050 80 Character 4 DTFXFBAO FBA OPEN POINTER
0054 84 Character 4 DTFXDTF PTR TO OLD DTF
0058 88 Character 4 DTFXNDTF PTR TO NEXT IN DTF LIST
005C 92 Character 4 DTFXORSP PTR TO OPEN SAVE AREA
0060 96 Character 4 DTFXXLEN LEN OF THIS EXTENSION
00000064 DTFXOCCW * PTR TO OLD CCW
0064 100 Character 1 DTFXSFSW SYSFIL SWITCH
1... .... DTFXIOPT X'80' DTFXIOPT IOPTR SPEC'D IN
DTFCP
.1.. .... DTFXFRVS X'40' DTFXFRVS FREEVIS DTFEXTEN
..1. .... DTFXMECP X'20' DTFXMECP MULTIPLE EXTENT CP
IS ALLOWED
0065 101 Character 3 DTFXOCWP OLD CCW PTR
0068 104 Character 4 DTFXCISZ CI SIZE IN BYTES
0000006C DTFXLMSP * PTR TO OLD LOGIC MOD
006C 108 Character 1 DTFXLMSW FLAGS
1... .... DTFXCPCP X'80' DTFXCPCP THIS IS FOR DTFCP
.1.. .... DTFXSDSD X'40' DTFXSDSD THIS IS FOR DTFSD
..1. .... DTFXDIDI X'20' DTFXDIDI THIS IS FOR DTFDI
...1 .... DTFXSDWF X'10' DTFXSDWF DTFSD
TYPE=WORKFILE
.... 1... DTFXVER3 X'08' DTFXVER3 DTF IS VERSION 3
.... .1.. DTFXSPRO X'04' DTFXSPRO SPANNED RECORD
FILE REOPEN REQUEST
.... ..1. DTFXCEOX X'02' DTFXCEOX COBOL EOX TAKEN
.... ...1 DTFXRSVD X'01' DTFXRSVD NOT USED
006D 109 Character 3 DTFXLMPT PTR TO OLD LOGIC MOD
0070 112 Character 64 DTFXLMSA LOGIC MOD SAVEAREA
00B0 176 Character 4 DTFXFBAB FBA BLOCKSIZE OR PHYSICAL RECORD
SIZE FOR CKD
00B4 180 Character 1 DTFXODVT DEVICE TYPE
00B5 181 Character 3 * FILL FOR DWORD ALIGN
00B8 184 Character 4 DTFXCCWP POINTER TO CCW WORK AREA
00BC 188 Character 4 DTFXMSWA POINTER TO MAP STRING WORK AREA
00C0 192 Character 4 DTFXSMWP PTR TO SPACE MANAMGEMENT WORK
AREA
00C4 196 Character 4 DTFXERXT ERROPT=ADDRESS ADDR
00C8 200 Character 4 DTFXULLX USER LABEL LOWER EXTENT
00CC 204 Character 4 DTFXULUX USER LABEL UPPER EXTENT
00D0 208 Character 4 DTFXIOA1 ADDR OF USERS I/O AREA 1
00D4 212 Character 4 DTFXSIO1 ADDR OF I/O AREA 1 SPECIFIED BY
USER ON DTF
00D8 216 Character 4 DTFXSIO2 ADDR OF I/O AREA 2 SPECIFIED BY
USER ON DTF
00DC 220 Character 4 DTFXBLSZ BLKSIZE SPECIFED BY USER ON THE
DTF
00E0 224 Character 4 * RESERVED
00E4 228 Character 4 * RESERVED
CI HEADER
000000E8 DTFXCI1 * CI HEADER
00E8 232 Character 4 DTFXCI1P CI BUFFER ADDRESS
00EC 236 Signed 4 * (0)
000000EC DTFXPBNR * CURRENT POSITION
000000EC DTFXCI1B * PBN OR CCHH OF CI
00EC 236 Character 2 DTFXCI1C CC
00EE 238 Character 2 DTFXCI1H HH
00F0 240 Character 1 DTFXCI1R ZERO FOR FBA, PHYSICAL RECORD
NUMBER FOR CKD
00F1 241 Character 1 * RESERVED
00F2 242 Character 1 DTFXCI12 IO PASSBACK FIELD
1... .... DTFXEOXH X'80' DTFXEOXH END OF EXTENT
.1.. .... DTFXIOEH X'40' DTFXIOEH IO ERROR OCCURRED
..1. .... DTFXIOWP X'20' DTFXIOWP WRITE IN PROGRESS
...1 .... DTFXIORP X'10' DTFXIORP READ IN PROGRESS
.... 1... DTFXCITL X'08' DTFXCITL LOGICAL BLOCK TOO
LONG
.... .1.. DTFXPONV X'04' DTFXPONV POSITION NOT VALID
.... ..1. DTFXEOFH X'02' DTFXEOFH EOF ENCOUNTERED
00F3 243 Character 1 DTFXCI13 CI STATUS
1... .... DTFXFREE X'80' DTFXFREE CI OR TRACK IS TO
BE FREED
.1.. .... DTFXFWRQ X'40' DTFXFWRQ FORMATTED WRITE
REQUIRED
..1. .... DTFXUWRQ X'20' DTFXUWRQ UNFORMATTED WRITE
REQUIRED
...1 .... DTFXRETR X'10' DTFXRETR RETRY BEING DONE
.... 1... DTFXFORW X'08' DTFXFORW FORCED WRITE BEING
DONE
.... .1.. DTFXVALC X'04' DTFXVALC CI CONTENTS ARE
VALID
.... ..1. DTFXLSIO X'02' DTFXLSIO LAST I/O FOR THE
CI
000000F4 DTFXCI1N * NEXT POSITION FOR CI FORMAT CKD
OR CCHH OF FIRST TRACK OF FIRST
EXTENT FOR NON-CI FORMAT CKD
000000F4 DTFXCIN * PBN OR CCHH OF NEXT CI
00F4 244 Character 2 DTFXCINC CC
00F6 246 Character 2 DTFXCINH HH
00F8 248 Character 1 DTFXCINR R
00F9 249 Character 1 DTFXCI14 FUNCTION FLAGS
1... .... DTFXSARC X'80' DTFXSARC STAND ALONE READ
COUNT REQUESTED
.1.. .... DTFXMTRQ X'40' DTFXMTRQ MULTI-TRACK READ
COUNT TO BE DONE
..1. .... DTFXTRHD X'20' DTFXTRHD TRACK IS TO BE
HELD ON THIS REQUEST
00FA 250 Character 2 DTFXCI11 CURRENT LOGICAL BLOCK NO.
00FC 252 Character 4 * RESERVED
SSR INTERFACE
0100 256 Character 2 DTFXRLEN REQUESTED DATA LENGTH
0102 258 Character 2 DTFXLBLN LOGICAL BLOCK LENGTH
0104 260 Character 4 DTFXIOAD LOGICAL BLOCK ADDR PTR
0108 264 Character 4 DTFXSSPR PTR TO SAM SERVICE RTN
0000010C DTFXRCIR * FULL NOTE/REPOSITION ID
0000010C DTFXRLCI * RELATIVE CI REPOSITION AND NOTE
010C 268 Character 1 DTFXRLC1 HIGH ORDER BYTE
010D 269 Character 3 DTFXRCIN RELATIVE CI NUMBER FOR NOTE ID
00000110 DTFXSSLB * LOGICAL BLOCK NUMBER FOR
REPOSIT- ION AND NOTE FOR CI
FORMAT, REMAIN- ING SPACE FOR
NON- CI FORMAT OTHER THAN
WORKFILES, R FOR WORKFILES
0110 272 Character 1 DTFXSSL1 FIRST BYTE OF LOGICAL BLOCK
NUMBER
0111 273 Character 1 DTFXSSL2 SECOND BYTE OF LOGICAL BLOCK
NUMBER
0112 274 Character 1 DTFXSPB1 SSR PASSBACK
1... .... DTFXEOX X'80' DTFXEOX END OF EXTENT
.1.. .... DTFXNLBF X'40' DTFXNLBF NO LOGICAL BLOCK
FOUND
..1. .... DTFXREOC X'20' DTFXREOC READ ERROR
OCCURRED
...1 .... DTFXWEOC X'10' DTFXWEOC WRITE ERROR
OCCURRED
.... 1... DTFXLBTL X'08' DTFXLBTL LOGICAL BLOCK TOO
LONG
.... .1.. DTFXSEOF X'04' DTFXSEOF SOFTWARE EOF
ENCOUNTERED
.... ..1. DTFXRQCP X'02' DTFXRQCP REQUEST COMPLETE
.... ...1 DTFXBOE X'01' DTFXBOE BEGIN OF EXTENT
0113 275 Character 1 DTFXSPB2 SSR PASSBACK
1... .... DTFXBOF X'80' DTFXBOF BEGIN OF FILE
.1.. .... DTFXBSL X'40' DTFXBSL BACKSPACE TO BE
REISSUED
..1. .... DTFXBSLR X'20' DTFXBSLR BACKSPACE IN
PROGRESS
0114 276 Character 1 DTFXSPR1 PREVIOUS ACTION REQUEST
0115 277 Character 1 DTFXSPR2 PREVIOUS REQUEST
0116 278 Character 1 DTFXSSIC SSR STATUS
1... .... DTFXRPIP X'80' DTFXRPIP REPOSITION IN
PROGRESS
.1.. .... DTFXERIP X'40' DTFXERIP ERROR EXIT IN
PROGRESS
..1. .... DTFXSKEX X'20' DTFXSKEX SKIP RETURN FROM
ERROR EXIT
...1 .... DTFXSCDF X'10' DTFXSCDF INITIALIZE CIDF
.... 1... DTFXRIOE X'08' DTFXRIOE RESUME AFTER IO
ERROR
.... .1.. DTFXDWCI X'04' DTFXDWCI DONT WRITE CI
.... ..1. DTFXLMEP X'02' DTFXLMEP EXPLICIT FREE
REQUEST
0117 279 Character 1 DTFXSSR1 RESERVED
0118 280 Character 2 DTFXNLBO NEXT LOGICAL BLOCK OFFSET
011A 282 Character 2 DTFXNRDF NEXT RDF OFFSET
011C 284 Character 2 DTFXLBRD LOGICAL BLOCK WITHIN RDF
011E 286 Character 2 DTFXRCIC REMAINING CI/TRACK CAPACITY
00000120 DTFXEXF * EXPLICIT FREE ADDRESS
0120 288 Character 4 DTFXEXFR EXPLICIT FREE CI BLOCK NO. OR
CCHH
0124 292 Character 1 DTFXEXR R
0125 293 Character 1 DTFXSSOP SSR OP CODE
0126 294 Character 2 * RESERVED SSR WORKFIELD
0128 296 Character 4 * RESERVED SSR WORKFIELD
EXTENT INFORMATION
0000012C DTFXFXLL * FILE LOWER EXTENT
012C 300 Character 2 DTFXFXLC CC
012E 302 Character 2 DTFXFXLH HH
0130 304 Signed 4 * (0)
00000130 DTFXFXUU * FILE UPPER EXTENT
00000130 DTFXFXUL * PBN OF FIRST BLOCK OF LAST CI
IN THE EXTENT OR CCHH OF FIRST
PHYSICAL RECORD OF LAST CI IN THE
EXTENT
0130 304 Character 2 DTFXFXUC CC
0132 306 Character 2 DTFXFXUH HH
0134 308 Character 1 DTFXFXUR RECORD NUMBER DS CL3 ALIGNMENT
FILLER-RESERVED
0135 309 Character 4 DTFXRELL RELATIVE CI NUMBER OF FIRST CI IN
THIS EXTENT
0139 313 Character 4 DTFXHRBA HIGH USED RBA
DATA CONSTANTS
013D 317 Character 2 DTFXCISB NO. BLOCKS PER CI FOR FBA,
PHYSICAL RECORDS PER CI FOR CI
FORMAT CKD
0000013F DTFXBCM1 * NO. BLKS PER CI MINUS 1
013F 319 Character 2 DTFXPRPT PHYSICAL RECORDS PER TRACK FOR CI
FORMAT CKD-- SPACE REQUIRED FOR
EOF FOR NON-CI FORMAT CKD
00000141 DTFX2BCI * TWICE NO. BLKS PER CI
0141 321 Character 2 DTFXTPC TRACKS PER CYLINDER FOR CI FORMAT
CKD
00000143 DTFX2BM1 * TWICE BLKS PER CI MINUS 1
0143 323 Character 2 DTFXTPC1 TRACKS PER CYLINDER MINUS ONE FOR
CI FORMAT CKD--COUNT/GAP
COMPUTATION CONST- ANT FOR NON-CI
FORMAT
0145 325 Character 2 DTFXCIM4 CISIZE MINUS 4 BYTES FOR CI
FORMAT -TRACK CAPACITY FOR NON-CI
FORMAT
0147 327 Character 2 DTFXCIMX CISIZE MINUS 10 BYTES FOR CI
FORMAT -COUNT/GAP OVERHEAD
CONSTANT FOR NON- CI FORMAT CKD
0149 329 Character 4 DTFXSSRW ADDRESS OF SSR AND LOGIC MODULE
WORKAREA
014D 333 Character 2 DTFXLHH LOWER CYLINDER HEAD LIMIT FOR
NON-CI CKD, 0 IF NOT SPLIT
CYLINDER
014F 335 Character 2 DTFXUHH UPPER CYLINDER HEAD LIMIT FOR
NON-CI FORMAT CKD
0000010C DTFXNPCK * EXTENDED NOTE/POINT ARGUMENT
DEFINITION
010C 268 Character 2 DTFXNPCC CC
010E 270 Character 2 DTFXNPH H
0110 272 Character 1 DTFXNPR R
0000010D DTFXNW * EXTENDED NOTE/POINT ARGUMENT
DEFINITION
010D 269 Character 2 DTFXNWCC CC
010F 271 Character 1 DTFXNWH H
000000B8 DTFXCCWW *
000000B8 DTFXCCWS * FBA CCW STRING
000000B8 DTFXDFX1 * DEFINE EXTENT CCW
00B8 184 Character 1 DTFXDEOC OP CODE
00B9 185 Character 3 DTFXDEXP EXTENT POINTER
00BC 188 Character 1 DTFXDECF CHAINING FLAGS
00BD 189 Character 1 DTFXDERS RESERVED
00BE 190 Character 2 DTFXDEBC BYTE COUNT
000000C0 DTFXLOC1 * LOCATE CCW
00C0 192 Character 1 DTFXLOOC OP CODE
00C1 193 Character 3 DTFXLOLP LOCATE LIST POINTER
00C4 196 Character 1 DTFXLOCF CHAINING FLAGS
00C5 197 Character 1 DTFXLORS RESERVED
00C6 198 Character 2 DTFXLOBC BYTE COUNT
000000C8 DTFXRWCW * READ/WRITE CCW
00C8 200 Character 1 DTFXRWOC OP CODE
00C9 201 Character 3 DTFXRWDP DATA POINTER
00CC 204 Character 1 DTFXRWCF CHAINING FLAGS
.1.. .... DTFXCWCN X'40' DTFXCWCN COMMAND CHAIN FLAG
00CD 205 Character 1 DTFXRWRS RESERVED
00CE 206 Character 2 DTFXRWLN LENGTH
000000D0 DTFXVNOP * NOP CCW
00D0 208 Character 1 DTFXVLOC OP CODE
00D1 209 Character 3 DTFXVLLP DATA PTR FOR NOP CCW
00D4 212 Character 1 DTFXVLCF CHAINING FLAGS
00D5 213 Character 1 DTFXVLRS RESERVED
00D6 214 Character 2 DTFXVLBC BYTE COUNT
00D8 216 Character 16 DTFXRSV4 RESERVED FOR CHANNEL PROGRAM
EXPANSION
000000E8 DTFXXTNT * DEFINE EXTENT DATA
00E8 232 Character 1 DTFXXTMB MASK BYTE
00E9 233 Character 3 DTFXXRSV RESERVED
00EC 236 Character 4 DTFXXTFB FIRST BLOCK ON MEDIA
00F0 240 Character 4 DTFXXTFD FIRST BLOCK ON DS
00F4 244 Character 4 DTFXXTLD LAST BLOCK ON DS
000000F8 DTFXLOCD * LOCATE DATA
00F8 248 Character 1 DTFXLCOB OPERATION BYTE
00F9 249 Character 1 DTFXLCRC REPLICATION COUNT
00FA 250 Character 2 DTFXLCBC BLOCK COUNT
00FC 252 Character 4 DTFXLCDD DATA DISPLACEMENT
00000008 DMSCCB *
00000008 CCBST * START CCB
THIS IS THE DESCRIPTION OF THE CCB BLOCK
00000008 CCBD * COMMAND CONTROL BLOCK
0008 8 Character 16 CCBLEN (0) MAP OF THE DOS CCB
0008 8 Bitstring 2 CCBCNT RESIDUAL COUNT
000A 10 Bitstring 4 CCBERMAP (0) 4 BYTES USED TO CHECK ERRORS
000A 10 Bitstring 1 CCBCOM1 COMMUNICATIONS BYTE NO. 1
1... .... CCBWAIT X'80' CCBWAIT TRAFFIC BIT(SET AT
CE)
.1.. .... CCBEOF X'40' CCBEOF END-OF-FILE
..1. .... CCBIOERR X'20' CCBIOERR UNRECOVERABLE I/O
ERROR
...1 .... CCBERROK X'10' CCBERROK ACCEPT
UNRECOVERABLE ERR
.... 1... CCBRDC X'08' CCBRDC RETURN DATA CHECKS
.... .1.. CCBPDE X'04' CCBPDE POST AT DEVICE END
.... ..1. CCBDCV X'02' CCBDCV RETURN DATA CHECK
RD/CHK
.... ...1 CCBUERR X'01' CCBUERR USER ERROR ROUTINE
000B 11 Bitstring 1 CCBCOM2 COMMUNICATIONS BYTE NO. 2
1... .... CCBDCCNT X'80' CCBDCCNT DATA CHECK IN
COUNT AREA
.1.. .... CCBTRKOV X'40' CCBTRKOV TRACK OVERRUN
..1. .... CCBEOC X'20' CCBEOC END-OF-CYLINDER
...1 .... CCBDC X'10' CCBDC DATA CHECK
.... 1... CCBNOREC X'08' CCBNOREC NO-RECORD-FOUND
.... .1.. CCBRETRY X'04' CCBRETRY RETRY NO RECORD
FOUND
.... ..1. CCBVER X'02' CCBVER VERIFY ERROR
.... ...1 CCBCC X'01' CCBCC COMMAND CHAIN(RETRY)
000C 12 Bitstring 1 CCBCSW1 CSW STATUS BIT NO. 1
1... .... CCBATTN X'80' CCBATTN ATTENTION
.1.. .... CCBSTMOD X'40' CCBSTMOD STATUS MODIFIER
..1. .... CCBCUE X'20' CCBCUE CONTROL UNIT END
...1 .... CCBBUSY X'10' CCBBUSY BUSY
.... 1... CCBCE X'08' CCBCE CHANNEL END
.... .1.. CCBDE X'04' CCBDE DEVICE END
.... ..1. CCBUC X'02' CCBUC UNIT CHECK
.... ...1 CCBUE X'01' CCBUE UNIT EXCEPTION
000D 13 Bitstring 1 CCBCSW2 CSW STATUS BIT NO. 2
1... .... CCBPCI X'80' CCBPCI PROGRAM-CONTROLLED
INTERRUPT
.1.. .... CCBILEN X'40' CCBILEN INCORRECT LENGTH
..1. .... CCBPROGM X'20' CCBPROGM PROGRAM CHECK
...1 .... CCBPROT X'10' CCBPROT PROTECTION CHECK
.... 1... CCBCHAND X'08' CCBCHAND CHANNEL DATA CHECK
.... .1.. CCBCHANC X'04' CCBCHANC CHANNEL CONTROL
CHECK
.... ..1. CCBICTRL X'02' CCBICTRL INTERFACE CONTROL
CHECK
.... ...1 CCBCHAIN X'01' CCBCHAIN CHAINING CHECK
000E 14 Bitstring 2 CCBSYMU (0) SYMBOLIC UNIT(SYSUN)
000E 14 Bitstring 1 CCBSUCLS U - LUB CLASS
000F 15 Bitstring 1 CCBSUNUM N - LUB NUMBER WITHIN CLASS
0010 16 Bitstring 1 CCBLIOBS RESERVED FOR LIOBS
0011 17 Bitstring 3 CCBCCW PT TO START OF CHANNEL PROGRAM
0014 20 Bitstring 1 CCBCOM3 COMMUNICATION BYTE NO. 3
.1.. .... CCBAPEND X'40' CCBAPEND APPENDAGE EXIT AT
INTERRUPT
.... ...1 CCBCCWF1 X'01' CCBCCWF1 Format-1 CCWs
present
0015 21 Bitstring 3 CCBCSW PT TO CSW OR PT APPENDAGE RTN
0018 24 Address 4 CCBLDATB ADDRESS OF LAST DATA BLOCK
001C 28 Address 4 CCBLCCWB ADDRESS OF LAST CCW BLOCK
0020 32 Signed 4 * AVAILABLE
0024 36 Bitstring 1 CCBUFLGS I/O MANAGER CCB FLAGS
1... .... CCBUEAIC X'80' CCBUEAIC ERROR ANALYSIS IN
CONTROL
.1.. .... CCBUEAC X'40' CCBUEAC ERROR ANALYSIS
COMPLETE
..1. .... CCBURDCW X'20' CCBURDCW READ CCW ACTIVE
...1 .... CCBRPS X'10' CCBRPS RPS CHAN PGM
CANDIDATE
0025 37 Bitstring 3 CCBFSCCW SAVE AREA FOR FIRST CCW ADDR
0028 40 Signed 4 CCBRDCCW ADDRESS OF FIRST READ CCW
002C 44 Signed 4 CCBWTCCW ADDRESS OF FIRST WRITE CCW
0030 48 Signed 4 CCBLWCCW ADDRESS OF THE LAST WRITE CCW
0034 52 Signed 4 * (3) AVAILABLE THIS CHAIN FIELD MUST
HAVE SAME DISPLACEMENT AS
FCBCHAIN IN FCDB AND BKPFSTBK IN
BKPHD
0040 64 Address 4 CCBNCCB ADDRESS OF NEXT CCB BLOCK
0044 68 Signed 4 * AVAILABLE
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