Radio Shack TRS-80 Model II Reference Manual page 76

Model II TRSDOS
HOST
Operate as a Host to a Remote T'erminal
This command allows the Model II to accept keyboard input from the
RS-232-C
interface, and to transmit all display output to the same interface. Serial Channel
A
is always used. While
HOST
is on, the Model II keyboard and the remote terminal
can both provide keyboard input; Model II output is duplicated to the Video Display
and to Channel
A.
Remote characters have a higher priority than local characters.
When you start
HOST,
you have the option of enabling the remote (BREAK) key. If
you enable remote (BREAK), the terminal will be able to interrupt operations just like
the console keyboard, by sending an
ASCII X'03'.
If you disable remote (BREAK), that
code will be ignored when it comes in via the serial interface. The
HOST
will process
a remote
X'QQ'
(null char) as if it were the local (HOLD) key.
Notes
1. Before turning on the host function, initialize Channel
A
with the
SETCOM
command.
2. At the remote computer, use the Model H
TERMINAL
program, or its equivalent.
3. Channel
A
may not be turned off while
HOST
is active.
Sample Use
You have another computer connected to the Model II via a telephone modem. The
remote computer is running the Terminal program, and you want the Model II to
accept commands from the remote computer. Type in this command on the Model
II:
HaSTON
This tells the Model II to accept' 'keyboard" input from the remote terminal, and to
echo all display output to the remote terminal.
To stop
HOST
operation, type:
HOSTOFF
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