...
| 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 |
|---|
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 |
|---|
Line 2 of the QUART is the only one, which can be used for connecting modems. Therefore, the " |
Serial line controllers
Asynchronous serial line multiplexers are capable of serving up to 8 asynchronous serial lines (the DHW42-BA supports 16 lines).
The following asynchronous serial line multiplexers are supported:
VAX model | Asynchronous serial line emulation |
|---|---|
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 valid QBUS 22-bit wide address in I/O space. Default values are 017760440 for DHV11-family controllers and 017760100 for DZV11/DZQ11, which are the factory settings for asynchronous serial line multiplexers.
| ||
vector | Numeric | Specifies interrupt vector. 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 a name of the serial line interface object in 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 |
| ||
rts[N] N=0…3(7,15) | Text String | Controls 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 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 depth of the TX FIFO for the N-th line of the multiplexer. Possible values are 1…1000, initially it is set to 1 to properly represent the hardware limitation of certain multiplexers. Values greater than 1 improve transmission rate of corresponding line, but break correspondence to the original hardware.
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To load several instances of Qbus multiplexers, use the "address" and "vector" parameters. Both "address" and "vector" parameter values must be unique for every instance of a QBUS multiplexer.
Read the VAX 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 some TTY port on host system with an emulated VAX serial line controller virtual "line". The TTY port can be physical hardware port or a logical TTY port. |
| virtual_serial_line | This type of mapping associates a network connection on the host system with an emulated VAX serial line controller virtual "line" |
| operator_console | This type of mapping associates the current TTY console with the OPA0 console port (if CHARON-VAX does not run as service) |
Example:
load physical_serial_line OPA0 |
physical_serial_line
| Parameter | Type | Description | ||
|---|---|---|---|---|
| line | Text string | A defined TTY port on host system:
| ||
| baud | Numeric | Forces the baud rate of the corresponding TTY port to a specified value. The variety of supported values depends on the underlying physical communication resource (TTY port). The most widely used values are: 300, 1200, 9600, 19200, 38400. Example:
| ||
| 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 HALT condition). Example:
| ||
| 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 to exit. Specify the value as the following: “F6” or “none” ("none" disables triggering STOP condition). Example:
Setting "F6" triggers the STOP condition upon receipt of the " | ||
| log | Text string | A string specifying a file name to store content of console sessions or a directory where log files for each individual session will be stored. If an existing directory is specified, CHARON-VAX automatically enables creation of individual log files for each session. If the "log" parameter is omitted, CHARON-VAX does not create a console log. Examples:
|
Example of mapping a console line to an onboard serial line:
|
virtual_serial_line
| Parameter | Type | Description | ||
|---|---|---|---|---|
| host | Text string | A remote host’s IP address or a host name (and optional 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 "<port-no>" is not specified, the virtual serial line uses the TCP/IP port number specified by the "port" parameter (see below). | ||
| port | Numeric | TCP/IP port number for the virtual serial line. A virtual serial line always listens on this port for incoming connection requests. | ||
| break_on | Text string | Specifies what byte sequences received over virtual serial line must trigger HALT command. This parameter works only for console line (for CHARON-VAX it is the only line of UART and the "line[3]" of QUART). Specify the following values: "Crtl-P", "Break" or "none" to disable triggering HALT condition. Example:
| ||
| 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 to exit. Specify the value as the following: “F6” or “none” ("none" disables triggering STOP condition). Example:
| ||
| log | Text string | A string specifying a file name to store content of console sessions or a directory where log files for each individual session will be stored. If an existing directory is specified, CHARON-VAX automatically enables creation of individual log file for each session. If the "log" parameter is omitted CHARON-VAX 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 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 that the examples above are mainly used for inter-CHARON communications. They are used to connect CHARON-VAX to an application that communicates to CHARON-VAX as described below.
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 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 are started makes no difference.
operator_
console
| Parameter | Type | Description | |
|---|---|---|---|
| break_on, stop_on | Text string | These two parameters are hardcoded to the following values and cannot be changed:
|
Example:
load operator_console OPA0 |
"ttyY" notation specifics
Note that the "ttyY" notation can have different forms depending on the nature of the device used:
Linux virtual tty (switchable by alt+F1-atl+F12 on a text console) – are represented as "/dev/ttyN" where N is from 0 to 11. Those tty devices must be free from the Linux "getty/mgetty" and similar programs (specified in "/etc/inittab")
Onboard serial lines are represented as "/dev/ttySN" where N is a number. For example "/dev/ttyS1"
Proprietary (depending on a driver) devices are represented as "/dev/ttyXXX" where XXX is a complex letter/number notation. For example "/dev/ttyR01" is the first port of a MOXA card and "/dev/ttyaa" stands for the first port of a DIGI card.
Linking serial controller port to host connection
The final step of CHARON-VAX serial line configuration is the association of each loaded serial port with a CHARON-VAX 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 connection instance named "TTA0". As explained earlier, TTA0 may be a virtual serial line connected to port, or a physical serial line connected to host serial port or virtual terminal.
In an 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/TTY port:
set TXA line[5]=TTA1 |