Hexadecimal Field
DisplacementName o
o
4
8iO 18
18
18
1820 24
2C30 31
32
28
2821 2C 30 34
36
38
3C
3D
3E40 42
43
44
4C50 54
58
5C60 68
6B
FCBINITDS FCBDOSL EQU FCBOS EQU FCBOPCB EQU FCBPERM EQU FCBBITCH EQU FCBCITML EQU FCBNEXT DS FCBPROC DS FCBDD DS FCBOP DS IHAJFCB DS JFCBDSNM DS FCBTIPID DS FCBDSNAM DS FCBDSTYP DS FCBPRPU EQU ORG FCBIOOUT DS FCBIOBUF DS FCBCONCR DS FCBCONMS DS FCBIOCNT DS FCBTBSP DS FCBDSMD DS FeBITE!! DS FCBBUFF DS FCBBYTE DS FCBFORM DS FCBCOUT DS FCBREID DS FCBDEV DS !!!!ยง FCBCRT EQU FCBPCH EQU FCBDSK EQU FCBTAP EQU FCBCON EQU FCBRDR EQU FCBPTR EQU FCBDUM EQU FCBMODE DS FCBXTENT DS FCBRECL DS IOBIOFLG DS FCBDCBCT DS FCBMEMBR DS FCBOSFST DS FCBOSDSN DS FCBR13 DS FCBKEYS DS FCBPDS DS JFCBMASK DS JFCBCRDT DS JFCBXPDT DS ox
in FCBINIT--X'20'--- X'10' X'08' X'04' X'02' X'01' A
A
CL8Ct8 OD OX OX CL8
CL8FCBDSTYP+4 FCBDSTYP+4 CL8 1 Field Description, Contents, Meaning Initialization flag tytes
ConcatenatedDOSLIB data set FCB for OS formatted disk OPEN acquired this CMS block
Permanent control tlockSpecial batch data set Concatenated MACLIB data set AL3 (next CMSCB) A (special processing routine)
Data definition nameeMS operation
Job file control block
44 bytes, data set name
Tape identification
Data set name
Data set type
printer/punch command listSpecial I/O command list
A(data buffer)
C A*16 Console color codeX A*17 Console miscellaneous information
Length of datatuffer H OX CL2 H F
F
CL2
H
F
Tvotytes for tape backspace
count
Data set modeItem identification number A(input/outFut tuffer)
Data count
I1*1 File format: fixed/variatle records
Records perCMS physical block
Number of bytes actually read
Devicetype code in FCBDEV --28-----
2420 16
12X H
HX 8
4
oX 2F
F
F
F1 A 8X 3C
3C
CRTPunch Disk
Tape
Console terminal
Reader
PrinterDUllmy device 1*2 Mode: 1, 2, 3, 4, and 5 Number of items in extent DCB LRECL at open time 1*3 I/O flags 1*4 No. of DCBs using this FCB OS prs member name Pointer to CS FST Pointer to as dsname block Save area vector R13 ACDtS in-storage key table) A(PtS in-storage directory) Various mask bits
Data set creation date(YDD) Data set expiration date (YDD) FCBSECT Section 2. CMS rata Areas and Control Blecks 181
Displacement
o
4
8
18
18
18
2C
32
28
28
36
38
3C
3D
3E
43
44
4C
58
5C
6B
FCBINIT
in FCBINIT
A
CL8
CL8
Concatenated
Permanent control tlock
Data definition name
Job file control block
44 bytes, data set name
Tape identification
Data set name
Data set type
printer/punch command list
A(data buffer)
C A*16 Console color code
Length of data
F
CL2
H
F
Tvo
count
Data set mode
Data count
I
Records per
Number of bytes actually read
Device
24
12
H
4
o
F
F
F
3C
CRT
Tape
Console terminal
Reader
Printer
Data set creation date