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Table of Contents
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Creation of your own configuration file using a template
By default, all the CHARON templates are located in the "/opt/charon/cfg" folder. Copy the appropriate template configuration file(s) to your home directory or to any directory intended for CHARON-VAX, name them meaningfully and set proper privileges.
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VAX model specification
The first configuration statement is the specification of the exact VAX hardware model to emulate.
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Configuration name
The next configuration statement is the "Configuration name" option.
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Log file parameters
Execution of CHARON-VAX creates one log file or a set of log files reflecting the progress of its start-up and ongoing operation - start and end time of execution, system information, license and configuration details, warnings, reports on problems that may occur, etc. In case of possible problems either with the running CHARON-VAX or the emulated system configuration (such as the absence or malfunction of certain devices), the log file(s) is the primary source to be analyzed for troubleshooting. If it becomes necessary to contact Stromasys for support, the configuration and log files, plus the license number, will be requested to begin problem resolution.
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Rotating log (default)
By default CHARON-VAX utilizes a so called "rotating log" mechanism. This means that a new default log file is created each time CHARON starts and can switch to another log file if the size of the log file exceeds 64Kb (this behavior can be changed with the "set session log_file_size" and "set session log_rotation_period" parameters; see more details in the "General Settings" chapter of this guide).
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Single log
Alternatively it is possible to use a single log file: uncomment the "set session log" line and specify the desired CHARON-VAX log file name. Optionally, a path can be added to the log file name. If the path is not specified, the log file is created in the directory from where the guest (emulated machine) is started.
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TOY, ROM and EEPROM containers
The next objects to be configured are TOY, ROM and EEPROM containers (their presence depends on the VAX model). It is always recommended to enable them. If a container file of the given name does not exist, CHARON-VAX will create it. Specific paths can be added to the file name specification.
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Emulated memory (RAM) size
The next parameter defines the amount of host memory the chosen CHARON-VAX model reserves for the emulation.
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Console
Mapping to system resources
The next step is the specification of the VAX console (OPA0) serial line.
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Note there are a number of additional parameters for CHARON-VAX serial line configuration. Follow this link for details.
Exit on pressing F6 key
A hot key can be defined to stop the execution of the CHARON-VAX virtual machine:
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Disk subsystem
The next step is the configuration of the disk subsystem and mapping it to the system resources using the samples given in the template configuration files.
CHARON-VAX supports MSCP, DSSI, CI and SCSI disk controllers. The examples below are for MSCP and SCSI controllers only. DSSI controllers are discussed in details in the following section and CI controllers in this section.
MSCP disk controllers (RQDX3, KDB50, KDM70)
Below is a typical configuration sample for MSCP disk controller RQDX3:
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SCSI controller NCR53C94
The VAX 4000 and MicroVAX 3100 have an NCR53C94 SCSI controller onboard for support of different types of SCSI devices including disks and tapes. Optionally a second controller can be added.
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Tape subsystem
Some MSCP and SCSI controllers support tape devices, however CHARON-VAX also emulates specific MSCP tape devices such as TQK50 and TUK50.
Follow this link for more details of (T)MSCP controllers configuration.
TQK50 controller
Example statements to configure TQK50 are shown below:
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It is possible to load several TQK50 controllers (see the lines 4-5) by configuring specific addresses for them on the Qbus. Use the "CONFIGURE" utility available on the VAX console to determine the addresses. Please refer to specific HP documentation for further information.
TUK50 controller
TUK50 is a UNIBUS controller used by the VAX 6310:
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Serial Lines
CHARON-VAX supports the following serial lines controllers: CXA16, CXB16, CXY08, DHQ11, DHV11, DZV11, DZQ11, DL11, DLV11, DZ11, DHW42-AA, DHW42-BA and DHW42-CA.
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Networking
CHARON-VAX supports DEQNA, DESQA, DELQA, DEUNA, DELUA, DEMNA, DEBNI and PMADAA virtual network adapters.
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Auto boot
CHARON-VAX can be configured to automatically boot an operating system at start up.
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Host load balance for SMP systems
The VAX 6620 through VAX 6660 models emulate 2-6 CPUs respectively. In this situation, loading of the host system can be tuned with the following configuration file settings:
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