Changing values for TSO/E

If you want to change a default parameter value for environments that IRXINIT initializes for TSO/E only, you probably have to code both a new IRXTSPRM module (for TSO/E) and a new IRXISPRM module (for ISPF). This is because most of the fields in the default IRXISPRM parameters module are null, which means that IRXINIT uses the value from the previous environment. The previous environment is the one that IRXINIT initializes for the TSO/E session.

For example, in the default IRXTSPRM module (for TSO/E), the USERPKFL, LOCPKFL and SYSPKFL flags are 0. This means the user, local, and system function packages defined for the previous environment are also available to the environment IRXINIT initializes for the TSO/E session. In the default IRXISPRM module (for ISPF), the masks for these three flags are 0, which means IRXINIT uses the flag settings from the previous environment. IRXINIT initialized the previous environment (TSO/E) using the IRXTSPRM module. Suppose you do not want the function packages from the previous environment available to an environment that IRXINIT initializes for TSO/E. However, when IRXINIT initializes an environment for ISPF, the function packages defined for the TSO/E environment should also be available in ISPF. You must code a new IRXTSPRM module and specify a setting of 1 for the USERPKFL, LOCPKFL, and SYSPKFL flags. You must code a new IRXISPRM module and specify a setting of 1 for the following mask fields:

USERPKFL_MASK
LOCPKFL_MASK
SYSPKFL_MASK

When you code the new load modules, you must include the default values for all of the other parameters. Values provided in the three default parameters modules shows the defaults TSO/E provides.