Non-Format Mode Data Transfer - HP 262SA Reference Manual

Block Data Transfer
CURSOR LOCATION. The location of the cursor after the block transfer is completed
depends on the terminal mode combination. It will be one of the following:
• Immediately following the end character.
• Column 1, with or without a line feed.
• Start column, with or without a line feed (modify modes data transfer).
• First column after the end of a field (when a field or portion of a field is transmitted).
• Last character position in the field transmitted.
Non-Format Mode Data Transfer
The following paragraphs contain some general rules applicable to data transfer when not in
Format mode.
DATA TRANSFERRED. Data transmitted in non-Format mode is as follows:
• ASCII displayable characters.
• ASCII control codes.
• Video enhancement escape sequences.
• Alternate character set escape sequences.
• Field definition escape sequences (including edit check escape sequences).
Video enhancements, alternate character set selections, field definitions, and edit checks in
display memory are converted to escape sequences and sent with the ASCII characters.
Duplicate escape sequences are stripped from the data block before transmission. The
duplications remain in the terminal display memory.
CURSOR START POINT. The left margin setting has no effect in cursor positioning before or
after a block transfer. For block transfers, the ((home up" position for cursor repositioning is not
the same as the ((home up" for the escape sequence or keystroke. The block transfer ((home up" is
the top of the workspace and is not affected by the left margin setting as is the normal ((home
up".
When in Block mode
a~d
with the menu
Au
t
oTerm( J)
field set to
((Yes",
the search backward,
for a character (block terminator or non-displaying terminator) at which to locate the cursor
start point, ends at the top of the workspace. The left margin setting is ignored.
If there is a memory-locked area and the cursor is outside of it when the. key is struck, the
search backward for a cursor start point skips over the memory-locked area.
If the cursor is within a memory-locked area, a non-displaying terminator (NDT) is entered at
the cursor location and the backward search includes the memory-locked area as well as any
area preceding it.
If the top row of the workspace is below the memory-locked area and no block terminator or
NDT is found in the memory-locked area, the cursor is set to the top of the workspace. Note that
in a case where the cursor is in the memory-locked area to begin with, the inserted NDTwould
not be encountered and the transfer would terminate elsewhere.
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