IBM 3164 ASCII Manual page 132

19 ASCII IF Control
20
Send line Option
21
Send Null Suppression
22
lock KBD and Keep MDT
23
Send Data Format
This option is used to determine where the CA/BA should be located
when the IF code is received from the host or keyboard.
If this option is off. the CA/BA moves down one row without changing
the column.
If this option is on, the new line function is performed instead of the line
feed function.
If this option is on, the Send key performs the same function as the Send
line key, and the Send line key works as the Send key.
When this parameter is on, the trailing nulls are suppressed during the
inbound block data transfer. If it is off, a null character is converted to a
space character and transferred to the host system.
Trailing nulls are null characters between the last significant character in
a field and the end-of-line (EOl), end-of-field (EOF), end-of-page
(EOP), or the cursor in a line. The following table shows how null
suppression is performed. For example, in a Send Page formatted
operation, null characters between the last significant character and EOF
or EOP, whichever comes first, are suppressed in each field.
Send/ Read Page
Send/Read Message
Send/Read Line
Read Field
Read All
Cursor: cursor position
address
end-of-line
Unformatted Formatted
EOl EOF or EOP
*
EOl or Cursor
*
EOF or Cursor
*
EOl EOl or EOF
*
EQl EOF
No Null Suppression
EOF: end-of-field Stop: stop
EOP: end-of-page EOL:
*: whichever comes first
When this parameter is off, the keyboard remains unlocked and the MDT
bits are reset to 0 just after the send/read operation.
If this parameter is on, the send/read operation causes the keyboard to
be locked and the MDT bits to remain unchanged. SENDING is
displayed in the operator information area. In this case, when the Reset
keyboard and MDT command is received, the keyboard is unlocked and
MDT bits are reset to O. When the host detects an error, it can send a
Read command to invoke retransmission of the terminal data, instead of
the 'Reset Keyboard and M Dr command.
This parameter is used to determine the type of data stream when a Read
command is received, a Send key is pressed in block mode, or the Auto
Send function is performed. One of the following data formats can be
selected for the convenience of the user.
- TEXT.lTA (for Read and Send operations)
- AI D. l TA (for Send operation)
Note: TEXT
lTA
AID
Terminal Data
line turnaround character
Attention 10 Code
ESC 8 (Send Page)
ESC space 8 (Send Message)
ESC! 8 (Send line)
ESC" 8 (Auto Send Field)
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