File Management - IBM

Table 23. Common I/O Feedback Area (continued)
Offset Data Type Length Contents
hex 60 3487-HG Display Station
hex 61 3487-HW Display Station
hex 62 3487-HC Display Station
hex 63 3935 (IPDS) Printer
hex 64 6344 Tape Unit
hex 65 6349 Tape Unit
hex 66 6369 Tape Unit
hex 67 6380 Tape Unit
hex 68 6378 Tape Unit
hex 69 6390 Tape Unit
hex 70 6379 Tape Unit
hex 71 9331-11 Diskette Unit
hex 72 9331-12 Diskette Unit
hex 73 3570 Tape Unit
hex 74 3590 Tape Unit
hex 75 6335 Tape Unit
32 Character 10 Device name. The name of the device for which the
operation just completed. Supplied only for display,
printer, tape, diskette, and ICF files. For printer or diskette
files being spooled, the value is *N. For ICF files, the value
is the program device name. For other files, the value is
the device description name.
42 Binary 4 Length of the record processed by the last I/O operation
(supplied only for an ICF, display, tape, or database file).
On ICF write operations, this is the record length of the
data. On ICF read operations, it is the record length of the
record associated with the last read operation.
46 Character 80 Reserved.
126 Binary 2 Number of records retrieved on a read request for blocked
records or sent on a write or force-end-of-data or
force-end-of-volume request for blocked records. Supplied
only for database, diskette, and tape files.
128 Binary 2 For output, the field value is the record format length,
including first-character forms control, option indicators,
source sequence numbers, and program-to-system data. If
the value is zero, use the field at offset 42.
For input, the field value is the record format length,
including response indicators and source sequence
numbers. If the value is zero, use the field at offset 42.
130 Character 2 Reserved.
132 Binary 4 Current block count. The number of blocks of the tape
data file already written or read. For tape files only.
136 Character 8 Reserved.
184 File Management V4R5