Transfer End Characters - HP 262SA Reference Manual

Block Data Transfer
In Character and Block .Line modes (but not Block Page mode), a field is sent to the host
computer even though it has not been modified, that is, the MDT is not checked. In Block Page
mode, only modified fields are sent.
When a field which has been modified is transmitted, the field separator character, selected on
the Terminal Configuration menu, is sent for each unmodified field preceeding the modified
one. If a field has been filled with blanks (for example, by ((clear display" from the keyboard),
then one blank is sent for each field; only trailing blanks are eliminated. A ((clear display" from
the host computer leaves the cleared fields unmodified.
Transfer End Characters
The character(s) appended to the end of a data block for each block transfer depends on the
mode combination and the type of transfer. The transfer end characters are listed in table 9-3.
Table 9-3. Transfer Ending Characters
LEGEND:
BT
NDT
CR
LF
(LF)
EOB
EOL
EOW
Block terminator
Non-displaying terminator
Carriage return
Line feed
Line feed, if enabled
End of Block (of lines or fields)
End of Line or Field
End of workspace (Cursor located at end of workspace when transfer in-
itiated. Also includes condition where there is no data to transfer.)
TRANSFER TYPE
ENTER KEY OR Ec d
STATUS OR BTOR
MODE USER KEY NDT EOL EOB
EOW
Character CR
BT CR
--
BT
or
(LF)
CR
(LF) CR
Block Line (LF)
(LF)
Block Page BT BT FS BT
BT
Format
Block Page BT BT CR CR BT
Non-Format
(LF)
LF
BT
9-11