The following categories are visible only when configuring a VT type session.
VT Model Options
This dialog allows you to select the VT terminal type and communication
options for the session.
Terminal Model This option selects the VT terminal model for the session.
Since the emulator always operates in superset mode, this option is mainly
used to select the appropriate sequences for the keyboard commands.
Communication Mode This option selects the communication mode with the host.
The default is 7-bit mode.
Answerback Message You can enter the answerback message in this edit box.
You can use the special escape sequences described later on in this chapter
to send non-printable characters.
Conceal This option, when enabled, conceals the answerback message. If this
option is disabled, the answerback message will be cleared automatically.
Character Sets
This dialog allows you to select the character set options for the session.
UPS Set You can select the User Preferred Supplemental character set to
be either the DEC Supplemental or the ISO Latin-1 character set.
NRC Set You can select the National Character Replacement character set
in the list box.
VT Display Options
This dialog allows you to select various display options for the session.
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Display Blink as Italic
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This option allows you to map the VT Blink attribute to an Italic font.
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Show Hotspots
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This option allows you to see where all the hotspot fields are on the screen.
When enabled, all hotspot fields are drawn in black text on a gray background.
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Display Row/
Col Indicator
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This option enables the display of the row and column indicator for the
cursor in the lower right hand side of the OIA.
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Compress Blank Lines in Scrollback
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When this option is enabled, the system does not add blank lines to the
scrollback buffer.
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Show Scrollbar for Scrollback
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This option enables the system to display a vertical scrollbar when you
enable scrollback mode. This allows you to travel easily through the scrollback
buffer.
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Save Attributes in Scrollback
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This option enables the system to save all VT attributes in the scrollback
buffer. If disabled, the system saves only the text. Note that when enabled,
this option consumes four times the amount of memory for each line.
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Lines Available in Scrollback
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This option controls the amount of lines that are kept in the scrollback
buffer. You can save up to 9999 lines in the scrollback buffer. The default
value is 100 lines.
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Status Line
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This option controls whether the status line is visible or not and whether
the host system can write to the status line.
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Format
This dialog allows you to select the screen size for the session.
Default Screen Width This option sets the default screen width when a session
is created.
Default Screen Height This option sets the window size for the session.
The sizes are only available if the VT Buffer Size is set to 6 Pages.
VT Buffer Size This option sets the internal display buffer size. If you
do not require any of the VT420 specific features, then select 1 Page.
This will conserve memory and accelerate certain functions. This option
has no effect on the scrollback buffer size.
Keyboard Options
This dialog allows you to select various keyboard options for the session.
Send Enter Key as This option determines determines whether a carriage return
or a carriage return and line feed are sent when the Enter key is pressed.
Backspace This option determines what character is sent when the Backspace
key is pressed.
Cursor Key Mode This option determines what sequences are sent when the
cursor keys are pressed.
Keypad Key Mode This option determines whether the numeric keypad is used
for numbers or whether it is used in Application mode.
Preferences
This dialog allows you to change various VT system options.
Auto Wrap This option enables the cursor to automatically wrap at the end
of a line when the line length is exceeded.
Local Echo This option will echo all data entered in the system. This option
is normally not enabled.
Terminal is Online When this option is disabled, the terminal is offline
and cannot receive or send any data.
Control Codes This option determines whether the system acts upon or displays
control codes that are received. The Display Option is normally only used
for debugging purposes.
Scrolling Method This option controls how the system scrolls by default.
Normal mode scrolls data line by line. This is also referred as Jump scrolling.
The Smooth option causes the system to scroll data ‘n’ pixels at a time.
Smooth scrolling is much slower and requires a better video display adapter.
Display Mode This option determines how the system will display
incoming
data. In Realistic mode, the system updates the display after each byte
or command received. This accurately emulates a true terminal. However,
this mode is much slower due to the overhead required. In Optimized mode,
the system only updates the display at the end of a communication buffer.
This mode often skips scrolling operations and simply displays the final
buffer. This provides a lightening fast display.
VT Save Category
This dialog allows you to tailor the options that affect saving screens
to disk.
Save Mode This option determines whether new saves will
append (default)
to the end of the save file or overwrite the save file.
Capture Mode This option determines how the system will capture data to
disk. In Text mode, the system captures all lines terminated with LF, VT,
or FF. In Raw mode, the system captures all data received including control
and escape sequences.
Default Save Filename Enter the path and name of the save file here.
Tabs
This dialog allows you to change the VT tab positions.
Tab Stops Enter the tab stops starting at column 1. Use the Every 8’th button
to set tab stops at every 8’th column starting with column 9.
