Use &SYSTERM_DSN in a macro definition to obtain the name of the data set to which the assembler is writing the terminal records.
The local-scope system variable symbol &SYSTERM_DSN is assigned a read-only value each time a macro definition is called.
When the assembler runs on the z/OS operating systems, the value of the character string assigned to &SYSTERM_DSN is always the value stored in the JFCB for SYSTERM. If SYSTERM is allocated to DUMMY, or a NULLFILE, the value in &SYSTERM_DSN is NULLFILE.
When the assembler runs on the CMS component of the z/VM operating systems, the value of the character string assigned to &SYSTERM_DSN is determined as follows:
| SYSTERM Allocated To: | Contents of &SYSTERM_DSN: |
|---|---|
| CMS file | The 8-character filename, the 8-character filetype, and the 2-character filemode of the file, each separated by a space |
| Dummy file (no physical I/O) | DUMMY |
| Printer | PRINTER |
| Labeled tape file | The data set name of the tape file |
| Unlabeled tape file | TAPn, where n is a value from 0 to 9, or A to F. |
| Terminal | TERMINAL |
On z/VSE, the value of the character string assigned to &SYSTERM_DSN is always SYSLOG.
Examples:
On z/OS, &SYSTERM_DSN might be assigned a value such as:
IBMAPC.IBMAPCA.JOB06734.D0000104.?
On CMS, &SYSTERM_DSN might be assigned a value such as:
TERMINAL
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