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used to name a CONNECTION. It should therefore conform to the naming
standards for a CONNECTION (rather than a TERMINAL) as defined in
CONNECTION definition attributes, in the CICS Resource Definition Guide. The
user program could identify an LU6.2 AUTOINSTALL request in one of the
following ways:
– Use a MODEL naming convention and examine the model name pointed to by
fullword 3.
– Test bytes 14 and 15 of the CINIT BIND which is pointed to by fullword 5 for
X'0602' (LU6.2).
v Set the return code to X'00'.
On entry to the autoinstall control program, the return code always has a nonzero
value. If you do not change this, the autoinstall request is rejected.
If you are not using MTS, your control program can also supply or change any of
the optional values, such as PRINTER and ALTPRINTER IDs or NETNAMEs,
before returning to CICS. If you need information about the formats and acceptable
character ranges for any of the return values, refer to the CICS Resource Definition
Guide.
If you are using MTS, then VTAM supplies the PRINTER and ALTPRINTER
NETNAMEs, if specified.
The printers need not be installed at this stage; however, they must be installed
before you use Print Key support. PRINTER and ALTPRINTER IDs override
PRINTER and ALTPRINTER NETNAMEs.
Note that TERMID, PRINTER, and ALTPRINTER are the only attributes of the
TERMINAL definition that can be set by the autoinstall control program; all other
attributes must come from one of these sources:
v The VTAM LOGMODE entry (MODEENT)
v The autoinstall model TERMINAL definition
v The TYPETERM definition that it refers to
v The QUERY function
v Model names from VTAM MDLTAB MDLENT and printers’ NETNAMEs from
VTAM ASLTAB ASLENT (if you are using MTS).
Note:
1. The QUERY function overrides any extended attributes specified in the
TYPETERM definition.
2. You cannot override information in the LOGMODE entry, with the model
TERMINAL and TYPETERM; they must match.
If your control program decides to reject the INSTALL request, it should return to
CICS with a nonzero value in the return code.
Having completed processing, the control program must return to CICS by issuing
an EXEC CICS RETURN command.
Selecting the autoinstall model
If you are using model terminal support to supply the model name (and the named
model exists and is valid), CICS passes the model name to your autoinstall control
program—you do not need to make any further selection.
Chapter 10. Writing a program to control autoinstall of terminals 521