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Refer to Mapping Serial line controllers to system resources for details of mapping.
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CHARON emulated console supports only 80 symbols in one line. |
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General parameters
CHARON-AXP console lines COM1 and COM2 have the following parameters:
All the values in the following tables are case insensitive.
alias
| Parameter | alias | |
|---|---|---|
| Type | Identifier | |
| Value | This parameter is used to set an useful name for COM1 or COM2 ports. Usually it is "OPA0" for COM1 and "TTA0" for COM2 Example:
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communication
| Parameter | communication |
|---|---|
| Type | Text string |
| Value |
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baud
| Parameter | baud | |
|---|---|---|
| Type | Numeric | |
| Value | Forces the baud rate of the corresponding COM port to be a specified value. The variety of supported values depends on the underlying physical communication resource (COM port). The most widely used values are: 300, 1200, 9600, 19200, 38400. Example:
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| Parameter | log_file_size | ||
|---|---|---|---|
| Type | Text string | ||
| Value | If log rotation is enabled, the log_file_size parameter determines the log file size threshold at which the log is automatically rotated.
Examples:
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host
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port
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set OPA0 host="<host-name>[:<port-no>]" |
If the "<port-no>" is not specified, the virtual serial line uses the TCP/IP port number specified by the "port" parameter (see below).
port
| Parameter | port |
|---|---|
| Type | Numeric |
| Value | The TCP/IP port number for the virtual serial line. A virtual serial line always listens on this port for incoming connection requests. If multiple virtualized machines are running on a server, ensure the port number is unique across the platform. |
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| Parameter | application | ||
|---|---|---|---|
| Type | Text string | ||
| Value | An application (a terminal emulator is assumed in most cases) to be started on initialization of this serial line emulation. The specified application startup string may contain all required parameters. Example:
In this example the terminal emulator application: "putty" is started with the parameters "-load OPA0" telling it to load a specific saved session named "OPA0", (created separately) from the host registry. The "application" parameter is often combined with a "port" parameter:
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Notes on "virtual_serial_line" options
Use the combination of "port" and "host" parameters as follows to connect a 3rd party terminal emulator or similar program.
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In this example CHARON VM connects to port 10000 of a host with TCP/IP address "192.168.1.1" and at the same time it accepts connections on local port 10000.
It is possible to specify a port on a remote host (note that CHARON always acts as a server). The syntax is:
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In this example CHARON VM accepts connection on local port 10000 and connects to remote port 20000 of a host with TCP/IP address "192.168.1.1"
Note: the examples above are mainly used for inter-CHARON communications. They are used to connect CHARON VM to an application that communicates to CHARON VM as described below.
Example:
Two CHARON VMs connected to each other:
On host "A":
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On host "B":
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