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• It provides a numeric lock function that reduces the chance of the end-user
entering non-nuinetic data when the application expects numeric data.. The 3708
allows the end-user to override this function by typing:
Any upper case character or symbol into the numeric field.
A blank into the first position in the numeric field. While the blank
occupies the first position in the field, the user can type any character into
the numeric field.
• It provides type-ahead key queuing, that allows the user to enter new keystroke
sequences on the keyboard while a preceding keyboard sequence is being
processed. This function allows a user to request the next screen before the
current screen is completely displayed. The user can turn type-ahead key
queuing on and off.
• It provides enhanced null/blank processing, that allows the user to use either the
space
bar
or the cursor move keys to edit and separate fields. The 3708 allows
trailing blanks or nulls to move off the end of a line when the user is inserting
data in that line. When the data is sent to the host, the 3708 converts imbedded
nulls to blanks. The user can turn eDhanced null/blank processing on and off.
• It supports highlighting and color for certain classes of displays. Refer to IBM
3708 Network Conversion Unit Description for more information. Light-pen
operations can be simulated using a Cursor Select key sequence.
• It supports the following 3270 commands:
Erase All Unprotected
Erase/Write
Erase/Write Alternate
Read Buffer
Read Modified
Read Modified All
Write.
• It supports the following buffer formatting and control orders:
Start Field
Set Buffer Address
Inset Cursor
Program Tab
Repeat to Address
Erase Unprotected to Address.
• It
notifies the user when it detects a framing or parity error by updating the
status line. To continue, the user must reset the display using the 3270 reset
function. This function can be suppressed by configuring the nonstandard
operating bit 5 to 1. Refer to "Non-Standard Operations" on page 14-3 for
more information.
• It allows the conttol terminal operator to display response-time statistics and
error information, such as the alert log, at the control terminal. In addition, the
response~time
statistics and alerts can be displayed at the host using NetView or
Network Logical Data Manager (NLDM) and the Network Problem
Determination Application (NPDA). Full support for 3708 alerts is available
only through NetView.
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3708 Planning and Installation
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