Data Areas
The following data areas are used by the 3704/3705 com.ana processor modules: • Active Disk Table (ADT) • Communications List (CCPAB!!) Controllers Parameter • File System Control Block (FSCB) • Network Interface Control Elock (NICELOK) • Beal Device Block (BDEVELCK) • Spool File Block (SFBLCK) • Virtual !!achine Block (V!BLCK) • Input/Output Block CIOBLOK) All the above data areas except the FseE
are described in the Vt!L37.Q ]!ta J!!!§ !!!g Block§ Logic. The FSCE is
described in Figure 9-8.
FILE SYSTE!! CONTBOL BLOCK Or-----------------------------------------------, FSCBFNCT 8 FSCBID I 18 11A FSeEBICN 1C FSCBBUFA 20 FSCBSIZE 24 FSCBFBMT I FSCEBOR 1------------------------------------------------ 281 FSCBLIOB Hex Dec --0 --0 FSCBFNCT DS CL8 Control field for 1/0 function
8 8 FSCBID DS OCL18 File Ident ifier
8 8 FSCBFN DS CL8 Filenalle 10 16 FSCBFT DS CL8 Filetype
18 24 FSCBFM DS CL2 Filellode
1A 26 FSCBBECN DS H
Belative record number 1C 28 FSCBBUPA DS A Euffer address 20 32 PSCBSIZ! DS P Euffer size
24 36 PSCBPB!!T DS CL2 File format
26 38 FSCBNOB DS OH Number of records to l:e read
28 40 FSCBLIOB DS A Figure 9-9. Pile Systea Control Block (PSCB) 190 IBM V!!/370 Service Boutines Program Logic

Diagnostic Aids
The following figures list the messages and abnormal termination codes issued by the CMS 3704/3705 command processors.
Figure 9-13 lists the messages issued by
the GEN37C5 command processor (DMSGRN). Figure 9-10 lists the messages issued by the NCPDUMP command Frocessor (DMKRND). Figure 9-14 lists the messages issued by
the LKED command processor (D!SLKD). Figures 9-11 and 9-12
issued by the A5M3705 (DMSARN and DMSARX). list the messages
command processor
Figure 9-15 lists the messages issued by
the SAVENCP command procEssor (DMSNCP). THE NCPDUMP COMMAND PROCESSOR (DMKRND)
Message
Code Label Diagram Message Text DMKRND8501 DUMPWRT 9-9 UNABLE TO READ DUMP FRCM REIDER (Return Code = 21) DMKRND8511 LOOKLOOP 9-9 TEN DUMP FILES ALREADY EXIST (Return Code = 22) DMKRND8521 FATAL I/O ERROR WRITING DUMP DMKRND8531 DUMPWRT 9-9 NO DUMP FILlS EXIST (Return Code = 23)
DMKRND861E STRTDUMP 9-9 FILE 'DU8Pnn NCPIU!P' NOT FCUND (Return Code = 28) DMKRND863E TESTOPT 9-9 INVALID PARAMETER - 'xxxxxxxx' (Return Code = 24) DMKRND8701 STRTDUMP 9-9 UNABLE TO CREATE CCNTROL FILE FOR IFLDUMP (Return Code = 16) DUMPWRT 9-9 'DUliPnn NCPIUMP' FILE CREATED LINKDMP 9-9 'DUMPnn NCPtUftP' FILE ERASED Figure 9-10. The NCPDUMP Command Processor (DftKRND) Error Messages Chapter 9. The 3704/3105 Service progra.s