HLASM Language Reference

&SYSLIN_DSN System Variable Symbol
&SYSLIB_VOLUME. If &SYSLIB_VOLUME is assigned a null character string,
the value of the count attribute is 0. The maximum length of this system
variable symbol is 6.
4. Throughout the use of a macro definition, the value of &SYSLIB_VOLUME is
considered a constant.
&SYSLIN_DSN System Variable Symbol
Use &SYSLIN_DSN in a macro definition to obtain the name of the data set to
which the assembler is writing the object records when assembler option OBJECT,
GOFF or XOBJECT is specified.
The local-scope system variable symbol &SYSLIN_DSN is assigned a read-only
value each time a macro definition is called.
The value of the character string assigned to &SYSLIN_DSN is always
the value stored in the JFCB for SYSLIN. If SYSLIN is allocated to DUMMY, or a
NULLFILE, the value in &SYSLIN_DSN is NULLFILE.
The value of the character string assigned to &SYSLIN_DSN is
determined as follows:
Figure 69. Contents of &SYSLIN_DSN on CMS
SYSLIN Allocated To:
Contents of &SYSLIN_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)
Punch
Labeled tape file
DUMMY
PUNCH
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.
The value of the character string assigned to &SYSLIN_DSN is
determined as follows:
Figure 70. Contents of &SYSLIN_DSN on VSE
SYSLNK Assigned To:
Contents of &SYSLIN_DSN:
Disk file
The file-id
Labeled tape file
The file-id of the tape file
Unlabeled tape file
SYSLNK
Examples:
On MVS, &SYSLIN_DSN might be assigned a value such as:
274 HLASM V1R5 Language Reference