File Management - IBM

Table 24. I/O Feedback Area for ICF and Display Files (continued)
Offset Data Type Length Contents File Type
3 Character 2 Cursor location (line and position). Updated on
input operations that are not subfile operations
that return data to the program. For example, hex
0102 means line 1, position 2. Line 10, position 33
would be hex 0A21.
Display
5 Binary 4 Actual data length. For an ICF file, see the ICF
Programming book for additional information. For
a display file, this is the length of the record
format processed by the I/O operation.
Display, ICF
9 Binary 2 Relative record number of a subfile record.
Updated for a subfile record operation. For input
operations, updated only if data is returned to the
program. If multiple subfiles are on the display,
this offset will contain the relative record number
for the last subfile updated.
Display
11 Binary 2 Lowest subfile. ndicates the lowest subfile relative
record number currently displayed in the
uppermost subfile display area if the last write
operation was done to the subfile control record
with SFLDSP specified. Updated for roll up and
roll down operations. Reset to 0 on a write
operation to another record. Not set for message
subfiles.
Display
13 Binary 2 Total number of records in a subfile. Updated on
a put-relative operation to any subfile record. The
number is set to zero on a write or write-read
operation to any subfile control record with the
SFLINZ keyword optioned on. If records are put
to multiple subfiles on the display, this offset will
contain the total number of records for all subfiles
assuming that no write or write-read operations
were performed to any subfile control record with
the SFLINZ keyword optioned on.
Display
15 Character 2 Cursor location (line and position) within active
window. Updated on input operations that are not
subfile operations that return data to the program.
For example, hex 0203 means line 2, position 3
relative to the upper-left corner of the active
window.
Display
17 Character 17 Reserved.
34 Character 2 Major return code.
Display, ICF
00 Operation completed successfully.
02 Input operation completed successfully,
but job is being canceled (controlled).
03 Input operation completed successfully,
but no data received.
04 Output exception.
08 Device already acquired.
11 Read from invited devices was not
successful.
34 Input exception.
80 Permanent system or file error.
81 Permanent session or device error.
82 Acquire or open operation failed.
83 Recoverable session or device error.
Appendix A. Feedback area layouts 187