How to specify parameters for your program (TSO)

To pass parameters to your program, append them to the ASMIDF command after a slash (⁄). IDF interprets anything that follows a slash as parameters that should be passed to the target program.

The parameter string is passed to the target in standard z/OS EXEC PGM style. That is, R1 points to a word that points to a halfword length field that is followed by the parameter string itself.

Figure 1. Specifying parameters for your program (TSO)

  * z/OS PROGRAM Parameter List --------------------------------
  PLIST  DC    A(PARMS+X'80000000')
                   ┬
                   │
  ┌────────────────┘
  │
  ↓
  PARMS  DC    AL2(L'CMDSTR)
  CMDSTR DC    C'original command string'