User's Manual

IBM OS/360 AND DOS/360 STANDARD LABELED TAPES
XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL 2-3
* HDR2, EOV2, and EOF2 are provided under OS/360 but not under
DOS/360. Note that optional labels are not shown.
** Multiple file tapes created under DOS/360 must be created with the
DTF TPMARK = NO specification to avoid incorrectly placing two
tape marks between files.
Table 2- 2. ANSI and IBM labeled tape structure
Feature ANSI labels IBM OS/360 standard labels
Tape marks A double tape mark follows the last EOF
or EOV label group on a tape to indicate
the end of recorded data on the tape.
A double tape mark follows only the last
EOF label group on a tape. This
indicates that end of recorded data has
been encountered, and there is not a
continuation reel.
VOL VOL1 only. OS:VOL1 only
DOS:VOL1 provided.
VOL2-9 permitted.
UVL 1-9 allowed. None allowed
HDR, EOF, EOV 1 required; 2-9 optional. OS:1 and 2 provided.
DOS:1 provided; additional labels not
used.
UHL, UTL These are limited only by the 63
USASCII graphics available as “a”
characters for the label “number.”
Only UHL 1-8 allowed.
Recorded code USASCII EBCDIC