NVT mode displays an unformatted screen for data entry, allowing basic keyboard functionality as a simple ASCII terminal. In addition to data keys, other recognized keys are:
●Clearclears the screen
●Entersends CR to the host
●Newlinesends CR to the host
●Backspacesends BS to the host
●Tabsends HT to the host
Once the appropriate details have been entered to establish an IBM host session (which may be automatic), the screen is cleared and switched into full IBM 5250 terminal emulation mode, as indicated by the following symbol on the status line:
The Status Line
The last line of the IBM 5250 screen is used to display status information in the form of symbols and alphanumeric characters.
Operating Mode & Communication
Indicates that a Telnet session is running.
Indicates that the current screen is an IBM 5250 screen. This screen will be displayed when you have initiated a Telnet session with the host.
Indicates that the system has one or more messages waiting for you.
Do Not Enter
Indicates when input from the keyboard or mouse will not be accepted by the host. When this
is because an error has occured, as shown in the error line, pressing the Reset key will remove the error. Alternatively, more information can be obtained by pressing the Help key. The only other keys available are Attn, SysReq and Print. Note that the emulation includes typeahead capability so that
176 Chapter 17 IBM 5250 Display Emulation