Modules

The DFHZCx modules contain CSECTs that issue VTAM® macros to perform specific communication functions, and exit routines that are driven by VTAM when network events occur that are related to CICS®.

The following is a list of the DFHZCx load modules concerned with terminal control and VTAM management in CICS, together with brief descriptions of their component object modules (CSECTs):

Module CSECT Description
DFHZCA     DFHZACT     Activate scan
           DFHZFRE     Freemain
           DFHZGET     Getmain
           DFHZQUE     Queue manager
           DFHZRST     RESETSR request
DFHZCB     DFHZATI     Automatic task initiation
           DFHZDET     Task detach
           DFHZHPSR    Authorized path SRB requests
           DFHZLRP     Logical record presentation
           DFHZRAC     Receive-any completion
           DFHZRAS     Receive-any slowdown processing
           DFHZRVS     Receive specific
           DFHZRVX     Receive specific exit
           DFHZSDR     Send response
           DFHZSDS     Send DFSYN
           DFHZSDX     Send synchronous data exit
           DFHZSSX     Send DFSYN command exit
           DFHZUIX     User input exit
DFHZCC     DFHZARER    Protocol error and exception handler
           DFHZARL     APPC application request logic
           DFHZARM     APPC migration logic
           DFHZARR     Application receive request logic
           DFHZARRA    Application receive buffer support
           DFHZARRC    Classify what next to receive
           DFHZARRF    Receive FMH7 and ER1
           DFHZBKT     Bracket state machine
           DFHZCHS     Chain state machine
           DFHZCNT     Contention state machine
           DFHZCRT     RPL_B state machine
           DFHZRLP     GDS post-VTAM receive logic
           DFHZRLX     GDS receive exit logic
           DFHZRVL     GDS pre-VTAM receive logic
           DFHZSDL     GDS send logic
           DFHZSLX     GDS send exit logic
           DFHZSTAP    Conversation state determination
           DFHZUSR     Conversation state machine
DFHZCP     DFHZARQ     Application request handler
           DFHZATT     Attach routine
           DFHZCNA     MVS console
           DFHZDSP     Dispatcher
           DFHZISP     Allocate/free/point
           DFHZSUP     Startup task
           DFHZUCT     3270 uppercase translate
DFHZCW     DFHZERH     APPC ERP logic
           DFHZEV1     APPC bind security (part 1)
           DFHZEV2     APPC bind security (part 2)
DFHZCX     DFHSNAS     Create signon/sign-off ATI sessions
           DFHSNPU     Preset userid signon/sign-off
           DFHSNSU     Session userid signon/sign-off
           DFHSNTU     Terminal userid signon/sign-off
           DFHSNUS     US domain - local and remote signon
           DFHSNXR     XRF reflecting signon state
           DFHZABD     Abend routine for incorrect requests
           DFHZAND     Build TACB before issuing PC abends
           DFHZCNR     MVS console request
           DFHZIS1     ISC/IRC syncpoint
           DFHZIS2     IRC internal requests
           DFHZLOC     Locate TCTTE and ATI requests
           DFHZSTU     Status changing TCTTEs/LCDs and TCTSEs
DFHZCXR    DFHBSXGS    APPC session name generation
           DFHZTSP     Terminal sharing functions
           DFHZXRL     APPC command routing
           DFHZXRT     Routed APPC command handling
DFHZCY     DFHZASX     DFASY exit
           DFHZDST     SNA-ASCII translation
           DFHZLEX     LERAD exit
           DFHZLGX     LOGON exit
           DFHZLTX     LOSTERM exit
           DFHZNSP     Network services exit
           DFHZOPA     Open VTAM ACB
           DFHZRRX     Release request exit
           DFHZRSY1    Resynchronization part 1
           DFHZRSY2    Resynchronization part 2
           DFHZRSY3    Resynchronization part 3
           DFHZRSY4    Resynchronization part 4
           DFHZRSY5    Resynchronization part 5
           DFHZRSY6    Resynchronization part 6
           DFHZSAX     Send command exit
           DFHZSCX     SESSION control input exit
           DFHZSDA     Send command
           DFHZSES     SESSIONC
           DFHZSEX     SESSIONC exit
           DFHZSHU     Shutdown VTAM
           DFHZSIM     SIMLOGON
           DFHZSIX     SIMLOGON exit
           DFHZSKR     Send response to command
           DFHZSLS     SETLOGON start
           DFHZSYN     Handle CTYPE=syncpoint/recover request
           DFHZSYX     SYNAD exit
           DFHZTPX     TPEND exit
           DFHZTRA     Create ZCP/VIO trace requests
           DFHZXPS     APPC persistent session recovery
           DFHZXRC     XRF and persistent sessions state data analysis
DFHZCZ     DFHZCLS     CLSDST
           DFHZCLX     CLSDST exit
           DFHZCRQ     CTYPE command request
           DFHZEMW     Error message writer
           DFHZOPN     OPNDST
           DFHZOPX     OPNDST exit
           DFHZRAQ     Read ahead queuing
           DFHZRAR     Read ahead retrieval
           DFHZTAX     Turnaround exit
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