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CHARON-VAX / CHARON-PDP console ports can be configured to connect to an external terminal via the host system COM port or can be connected via TCP/IP.
| Parameter | Type | Value | ||
|---|---|---|---|---|
rts[<line>] | Text string |
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dsr[<line>] | Text string |
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communication [<line>] | Text string |
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line[<line>] | Identifier | This parameter is used to connect a particular serial line interface to the controller. See below for details. |
| Info |
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Note that the "line" parameter in the table above is applicable only in the case of QUART. |
All the values in this table are case insensitive.
Example:
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| Warning |
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Line 2 of the QUART is the only one which can be used for connecting modems. Therefore, the " |
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Serial line controllers
Asynchronous serial line multiplexers are capable of serving up to 8 asynchronous serial lines (the DHW42-BA supports up to 16 lines).
The following asynchronous serial line multiplexers are supported:
VAX model | Asynchronous serial line emulation |
|---|---|
PDP-11/93, PDP-11/94, MicroVAX II, MicroVAX 3600, MicroVAX 3900, VAXserver 3600, VAXserver 3900 (QBUS systems) | CXA16, CXB16, CXY08, DHQ11, DHV11, DZV11, DZQ11, DL11, DLV11, DZ11 |
MicroVAX 3100 - 96, MicroVAX 3100 - 98 (SCSI systems) | DHW42-AA, DHW42-BA, DHW42-CA |
VAX4000 - 106, VAX4000 – 108, VAX4000 – 700, VAX4000 – 705 (QBUS/SCSI systems) | CXA16, CXB16, CXY08, DHQ11, DHV11, DZV11, DZQ11, DLV11, DHW42-AA, DHW42-BA, DHW42-CA |
VAX6310, VAXstation 4090 | N/A |
The following names are used for the multiplexers:
Device name | Module name |
|---|---|
DHV11 | DHV11 |
DHQ11 | DHV11 |
CXY08 | DHV11 |
CXA16 | DHV11 |
CXB16 | DHV11 |
DHW42AA | DHV11 |
DHW42BA | DHV11 |
DHW42CA | DHV11 |
DZV11, DZ11 | DZ11 |
DZQ11 | DZ11 |
DL11, DLV11 | DL11 |
The following example loads an instance of an asynchronous serial line multiplexer:
load DHQ11/DHV11 TXA |
| Warning |
|---|
Only one instance of DHW42 can be loaded. There is no restriction on the number of the other multiplexers. |
The multiplexers offer the following configuration parameters, specified with the "set" command:
Parameter | Type | Value | ||
|---|---|---|---|---|
address | Numeric | Specifies CSR address. The address must be a valid QBUS 22-bit wide address in I/O space. Default values are 017760440 for the DHV11-family controllers and 017760100 for the DZV11/DZQ11 family controllers, which are the factory settings for asynchronous serial line multiplexers.
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vector | Numeric | Specifies the interrupt vector. The default value is 0300, which is the factory setting for asynchronous serial line multiplexers.
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line[N] N=0…3(7,15) | Identifier | Specifies the name of the serial line interface object in the configuration to which the N-th line of the multiplexer is connected. See below for details. | ||
communication[N] N=0…4(7,15) | Text String |
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rts[N] N=0…3(7,15) | Text String | Controls the RTS signal of the Nth line of the multiplexer.
When left blank (initial state), the level of the RTS signal is as requested by the VAX/PDP11 software. | ||
dsr[N] N=0…3(7,15) | Text String |
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tx_q_max_depth[N] N=0…3(7,15) | Numeric | Specifies the depth of the TX FIFO for the N-th line of the multiplexer. Possible values are 1…1000, initially set to 1, to properly represent the hardware limitation of certain multiplexers. Values greater than 1 improve transmission rate of the corresponding lines, but break correspondence to the original hardware.
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Use the "address" and "vector" parameters to load several instances of the Qbus multiplexers. Both "address" and "vector" parameter values must be unique for every instance of a QBUS multiplexer.
Read the VAX/PDP11 hardware documentation and the VM system management documentation to understand how to correctly assign the "address" and "vector" parameters.
Example of loading 2 instances of DHV11:
load DHV11/DHV11 TXA address=017760440 vector=0300 load DHV11/DHV11 TXB address=017760460 vector=0310 |
Example of loading DHW42CA:
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Mapping Serial line controllers to system resources
Types of serial line mapping
| Type | Function |
|---|---|
| physical_serial_line | This type of mapping associates a COM port on a host system with an emulated VAX/PDP11 serial line controller virtual "line". The COM port can be a physical hardware port or a logical COM port. |
| virtual_serial_line | This type of mapping associates a network connection on the host system with an emulated VAX/PDP11 serial line controller virtual "line" |
Example:
load physical_serial_line OPA0 |
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physical_serial_line
| Parameter | Type | Description | ||
|---|---|---|---|---|
| line | Text string | A defined COM port on a host system in the form of "\\.\COMn" Example:
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| baud | Numeric | 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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| break_on | Text string | Specifies what byte sequences received over the physical serial line will trigger a HALT command. This parameter works only for the console line (for the one UART line and "line[3]" of QUART). Specify the following values: "Crtl-P", "Break" or "none" ("none" disables triggering a HALT condition). Example:
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| stop_on | Text string | Specifies what byte sequences received over the physical serial line will trigger a STOP condition. The STOP condition causes CHARON-VAX / CHARON-PDP to exit. Specify the one of the following values: “F6” or “none” ("none" disables triggering a STOP condition). Example:
Setting "F6" triggers the STOP condition upon receipt of the " | ||
| log | Text string | A string specifying a file name to store the content of the console sessions or a directory where the log files for each individual session will be stored. If an existing directory is specified, CHARON-VAX / CHARON-PDP automatically enables creation of individual log files, one for each session using the same scheme as used for the generation of the rotating log files. If the "log" parameter is omitted, CHARON-VAX / CHARON-PDP does not create a console log. Examples:
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Example of mapping a console line to a host physical serial line:
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virtual_serial_line
| Parameter | Type | Description | ||
|---|---|---|---|---|
| host | Text string | A remote host’s IP address or hostname (and optionally a remote TCP/IP port number) for the virtual serial line connection. If omitted, the virtual serial line does not initiate a connection to the remote host and will listen for incoming connection requests. Specify the value in the following form:
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 | Numeric | The TCP/IP port number for the virtual serial line. A virtual serial line always listens on this port for incoming connection requests. | ||
| application | Text string | 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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| break_on | Text string | Specifies what byte sequences received over a virtual serial line triggers a HALT command. This parameter works only on the console line (for CHARON-VAX / CHARON-PDP it is the only line of UART and "line[3]" of QUART). Specify one of the following values: "Crtl-P", "Break" or "none" to disable triggering a HALT condition. The commands are case insensitive. Example:
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| stop_on | Text string | Specifies what byte sequences received over the virtual serial line will trigger a STOP condition. The STOP condition causes CHARON-VAX / CHARON-PDP to exit. Specify one of the following values: “F6” or “none” ("none" disables triggering a STOP condition). The commands are case insensitive. Example:
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| log | Text string | A string specifying the filename to store the content of the console sessions or a directory where log files for each individual session will be stored. If an existing directory is specified, CHARON-VAX / CHARON-PDP automatically enables the creation of individual log files, one for each session using the same scheme as used for the generation of the rotating log files. If the "log" parameter is omitted, CHARON-VAX / CHARON-PDP does not create any console log. Examples:
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Example of mapping a console line to an onboard serial line:
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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.
load virtual_serial_line/chserial TTA0 host="192.168.1.1" port=10000In this example CHARON-VAX / CHARON-PDP 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:
load virtual_serial_line/chserial TTA0 host="192.168.1.1:20000" port=10000
Note: the examples above are mainly used for inter-CHARON communications. They are used to connect CHARON-VAX / CHARON-PDP to an application that communicates to CHARON-VAX / CHARON-PDP as described below.
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Example of two CHARON systems connected to each other:
On host "A":
load virtual_serial_line/chserial TXA0 port=5500 host="B" |
On host "B":
load virtual_serial_line/chserial TXA0 port=5500 host="A" |
On these two hosts, executing CHARON-VAX, the two TXA0 lines connect to each other, thus creating a "serial" cable between the two emulated VAXes. The sequential order in which the instances of CHARON-VAX / CHARON-PDP are started makes no difference.
Linking serial controller port to host connection
The final step in the CHARON-VAX / CHARON-PDP serial line configuration is the association of each loaded serial port with a CHARON-VAX / CHARON-PDP host connection instance as follows:
set <serial controller instance name> line[<line number>]=<serial line instance name> |
Example:
set quart line[0]=TTA0 |
This command connects the first serial line ("line[0]") of a "QUART" serial line controller to a CHARON-VAX / CHARON-PDP connection instance named "TTA0". As explained earlier, TTA0 may be a virtual serial line connected to a port or a physical serial line connected to a host serial port or a virtual terminal.
In the example below, the command connects the sixth serial line of a previously loaded controller (named "TXA") to "TTA1". "TTA1" could be defined, for example, as a physical serial line connected to COM/COM port:
set TXA line[5]=TTA1 |