HLASM Language Reference

&SYSPUNCH_DSN System Variable Symbol
3. The value of the count attribute of &SYSPRINT_VOLUME
(K'&SYSPRINT_VOLUME) is equal to the number of characters assigned as a
value to &SYSPRINT_VOLUME. If &SYSPRINT_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.
&SYSPUNCH_DSN System Variable Symbol
Use &SYSPUNCH_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 DECK is
specified.
The local-scope system variable symbol &SYSPUNCH_DSN is assigned a
read-only value each time a macro definition is called.
When the assembler runs on the MVS operating systems, the value of the
character string assigned to &SYSPUNCH_DSN is always the value stored in the
JFCB for SYSPUNCH. If SYSPUNCH is allocated to DUMMY, or a NULLFILE, the
value in &SYSPUNCH_DSN is NULLFILE.
When the assembler runs on the CMS component of the VM operating systems,
the value of the character string assigned to &SYSPUNCH_DSN is determined as
follows:
Figure 74. Contents of &SYSPUNCH_DSN on CMS
SYSPUNCH Allocated To:
CMS file
Dummy file (no physical I/O)
Punch
Labeled tape file
Contents of &SYSPUNCH_DSN:
The 8-character filename, the
8-character filetype, and the
2-character filemode of the file, each
separated by a space
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.
On VSE, the value of the character string assigned to &SYSPUNCH_DSN is
determined as follows:
Figure 75. Contents of &SYSPUNCH_DSN on VSE
SYSPCH Assigned To:
Contents of &SYSPUNCH_DSN:
Disk file
The file-id
Punch
SYSPCH
Labeled tape file
The file-id of the tape file
Unlabeled tape file
SYSPCH
Examples:
On MVS, &SYSPUNCH_DSN might be assigned a value such as:
IBMAPC.IBMAPCA.JOB6734.D13.?
Chapter 7. How to Specify Macro Definitions 289