Memorex LOCK - VERSION 2-24 Spezifikationen Seite 269

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VSE/POWER PDISPLAY, POFFLOAD and Printer/Punch Tape Spooling
Chapter 7. Running Jobs With BIM-EPIC 7-49
VSE/POWER PDISPLAY, POFFLOAD and Printer/Punch
Tape Spooling
With the introduction of standard label support for tape spooling of either print or punch data
and for POFFLOAD tapes, it is possible to utilize BIM-EPIC controlled tapes and dataset
names for these functions even though some restrictions do apply. To invoke BIM-EPIC
control of these tape datasets, the TLBL= and LTAPE= operands need be specified in the
appropriate VSE/POWER command or JECL control statement.
BIM-EPIC datasets must be defined to the BIM-EPIC catalog as prime datasets only. Do not
attempt to use NSU (subordinate) datasets. With NSU datasets, VSE/POWER may
successfully write the data but may be unable to read it because additional tape-marks are
typically imbedded within that data.
Datasets may be cataloged as unlabeled. A better choice might be to only use labeled datasets
since VSE/POWER will not be able to recognize unlabeled multi-volume versions beyond the
first volume. It becomes the users responsibility to recognize that unlabeled multiple volumes
exist within a version so the remaining volumes can be processed with additional
VSE/POWER commands.
The actual TLBL control statement referenced by the TLBL= operand MUST be stored in the
standard label area, the VSE/POWER partition label area, or the VSE/POWER user label
area. LUB allocation must be inhibited since VSE/POWER will dynamically choose a SYS
number which must be used.
VSE/POWER continues to make and release tape device assignments. This prevents BIM-
EPIC from accomplishing AVR. VSE/POWER determines which tape drive to be used by the
specification supplied in the PDISPLAY or POFFLOAD command, in the TADDR operand
on the * $$ LST or * $$ PUN JECL statements, or, if the TADDR operand is not specified, by
the System console response given to message 1Q55D SPECIFY TAPE ADDRESS.
If output fills more than a single tape volume, VSE/POWER will invoke VSE/SAM End-of-
Volume procedures, unload the current tape and issue the message
4140A NO ALTERNATE DRIVE ASSIGNED ... SYSXXX=CUU
Since VSE/POWER still has the tape drive assigned, BIM-EPIC is unable to AVR other tape
drives for an available scratch tape. The operator must mount a fresh scratch tape on the
indicated drive and respond 'NEWTAP'.
If input spans multiple tape volumes, VSE/POWER will invoke VSE/SAM End-of-Volume
procedures, unload the current tape and issue the message:
4140A NO ALTERNATE DRIVE ASSIGNED ... SYSXXX=CUU
Description
DSN Catalog
JCL Requirements
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