6 Commands
85
6.92 Term
Default setting: 0
Parameter: 0 Simple terminal mode.
1 Terminal mode with delayed echo.
2 Split screen terminal mode.
3 Enhanced split screen.
4 Split screen with command prompt recognition.
5 Split screen also for Packet-Radio.
With this command it is possible to make the PTC-IIIusb support split screen terminals.
In simple terminal mode text is not sent to the terminal when the PTC receives
commands from the user. The text stream is interrupted by the first command given. At
maximum 2000 characters are stored. The terminal must have local echo (half duplex).
Terminal mode 1 is for use with simple split screen terminals. The incoming text, and
the text to be sent out, should be displayed in separate windows on the screen. All
transmitted characters are echoed by the PTC, as soon as they are transmitted and
correctly confirmed by the station the PTC is connected to (delayed echo).
In terminal mode 2 the PTC completely controls the switchover between the windows
on the screen. Therefore the screen is divided in two areas. In the upper area the system
information of the PTC and the text to be transmitted appears. The lower window shows
the received text and the delayed echo-text. The PTC sends Ctrl-A as a changeover
character to the TX/information window and Ctrl-B as a changeover character for
RX/delayed echo window. The windows should be scrollable independently.
Terminal mode 3 arranges the delayed echo to be signaled by a Ctrl-C, not a Ctrl-B as it
is in terminal mode 2. The normal RX text is still signaled by a Ctrl-B. This convention
makes it possible to divide the screen into three parts. The first window (Ctrl-A) for
system information and TX text, the second window (Ctrl-B) for RX text and the third
window (Ctrl –C) for delayed echo text.
Terminal mode 4 differs from TERM 3 in that the PTC sends a Ctrl-D before every
command prompt. TERM 4 considerably eases the terminal programming, in that the
continuous search for prompts (cmd:, **--A--**, etc) is no longer required. Also, the
PTC always sends a pseudo prompt when the command interpreter is closed again (on
Connect, on switching to the CW or RTTY modes, etc.). This contains only a < Ctrl-D>,
followed by a <CR>, thus complete control over the (command) input window is
maintained, and there is no ambiguity concerning the <CR> sent from the PTC. It is
recommended that the <CR> from the keyboard, signaling the end of a command, is not
shown as local echo in the input window, but just ignored. This minimizes unnecessary
empty lines in the input window.
In terminal mode 5, PR data, link status messages, monitor information etc is always
proceeded with a Ctrl-F. Only direct answer messages for a command input do not fall
under this convention. This allows the comfortable administration of PR multi connects
etc. using a non hostmode terminal.
All PR received data is sent at once to the terminal program without bothering about the
Setch command (refer to chapter 9.8.32, page 131). Setch only has influence on the
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