User's Manual

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) LABELED TAPES
XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL 1-9
The HDR1 label is required for all files and for continuation of files on
succeeding reels. It identifies the file and contains operating system
information that relates to the file.
The EOV1 label is required following the last data block on a tape
when the file or file set is continued on a succeeding tape. It is
separated from the last data block by the tape mark that must
precede every end-of-volume label group.
The EOF1 label is required following the last data block of every file.
It is separated from the last data block by the tape mark that must
precede every end-of-file group.
Accessibility 54 11 This indicates any restriction on who may have
access to information in this file and may be any one
of the characters defined in the ANSI Standard
X3.27—1969 as “a” characters. A space indicates
unlimited access; any other character indicates
special handling.
Block count* 55-60 12 For HDR1, this field contains zeros. For EOV1 and
EOF1, it is a 6-digit numeric field specifying the
number of data blocks (exclusive of labels and tape
marks) since the preceding HDR group.
System code (optional) 61-73 13 This is a 13-character field specifying the operating
system that recorded this file. Any of the characters
defined in ANSI Standard X3.27—1969 as “a”
characters may be used
Reserved 74-80 14 Spaces
Table 1-3.HDR1, EOV1, and EOF1 labels (ANSI) tapes (continued)
Name
Character
position(s)
Field Description
* Fields 3, 5, and 12 are used by the operating system.