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V3 Initialization
Mike Großmann edited this page Oct 10, 2022
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- Function 8 characters
- Parameter Module 8 characters and/or
- In-storage parameter list address
- User field address
- Reserved address, must be 0
- Environment block address, output
- also in R0
- Reason code fullword, output
- Extended parameter list address, optional
- Storage workarea; by default system obtained
- Generally 3 pages (12K) of storage is needed for the storage workarea for normal exec processing, for each level of exec nesting
- Return code fullword, output, optional
- TSO ECT address, optional
- Only for initializing TSO integrated environment
- IRXPARMS (non TSO)
- IRXTSPRM (TSO)
- IRXISPRM (ISPF)
- INITENVB - initialize an environment
- FINDENVB - find the current environment
- CHECKENVB - validate a given address is an environment