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Note: the lines preceded by the comment sign "#" inside the configuration files will not be interpreted. You can use this sign to debug your configuration.
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HP Alpha model specification
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If you create the CHARON-AXP configuration file from scratch, it must be the very first uncommented line in the configuration file.
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Configuration name
The next configuration statement is the "Configuration name" option.
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You can optionally uncomment this line to differentiate this CHARON-AXP instance from all others in a multi-instances environment. The configuration name can be any label that is meaningful. It is reported in the log file and is used to set the log file name for rotating log (see further: Rotatinglog(default) ).
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Log file parameters
Execution of CHARON-AXP 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-AXP 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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The next group of parameters defines the name of the CHARON-AXP log file and how CHARON-AXP will use it:
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CPU affinity
This setting binds the running instance of the emulator CPUs to particular host CPUs. This should be used for soft partitioning host CPU resources or for isolating multiple CHARON instances on the same host from each other. By default the emulator instance allocates as many host CPUs as possible.
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Note that the number of the specified host CPUs must correspond to the number of the emulated CPUs (one host CPU for one emulated CPU; this value is specific for each HP Alpha model) and number of CPUs needed for CHARON application itself ("n_of_io_cpus").
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Number of host CPUs dedicated to CHARON I/O
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Note that the number of the specified CPUs dedicated to CHARON I/O operations must correspond to the total number of available for CHARON CPUs (restricted by "affinity" parameter if needed) and the number of the virtual HP Alpha CPUs to be emulated.
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Setting a specific HP Alpha model
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The full description of the parameters, with other models that can be also configured, is available in the "Configuration details" chapter of this User's Guide.
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Reducing number of emulated CPUs
If the CHARON host contains does not contain enough CPUs to emulate full range of the CPUs provided by a certain HP Alpha model, it is possibe possible to direct CHARON-AXP to reduce the number of emulated Alpha CPUs in the configuration:
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This parameter can also be used to avoid warning messages in the log if the number of CPUs allowed by the license is less than the default number of CPUs of the emulated HP Alpha model.
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Setting system serial number
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TOY and ROM containers
The next objects to be configured are TOY and ROM containers (their presence depends on the HP Alpha model). It is always recommended to enable them. If a container file of the given name does not exist, CHARON-AXP will create it. It is recommended to specify the path for each file so that time and console parameters will be kept whatever the current directory is when starting the guest.
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Emulated memory (RAM) size
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Note that in some particular orders your license may restrict the maximum RAM amount of each HP Alpha model.
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Console
Mapping to system resources
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| line | Mapping to host serial line, both physical and virtual. Use the following mapping for different types of host serial lines:
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| port | Mapping to an IP port of the CHARON -VAX host. | ||||||||||||
| application | Starting some application (typically another xterm terminal) with its specific options and switches to communicate to CHARON using the IP port defined by the "port" parameter (see above) | ||||||||||||
| alias | Define some meaningful name for "COM1" and "COM2". Usually it is "OPA0" for "COM1" and "TTA0" for "COM2" (see below) |
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This line provides CHARON-AXP the ability to exit by pressing the "F6" key.
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Improve granularity of emulated timer
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Do not uncomment this parameter unless there are some problems with system time or system clock intervals in guest OS.
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ATAPI CD/DVD-ROM configuration
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How to find proper "/dev/sg" device is explained in this section.
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AlphaStation Sound Card (AD1848) configuration
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Networking
CHARON-AXP supports DE435, DE450, DE500AA, DE500BA, DE602 and DE602AA virtual network adapters.
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The AlphaServer DS 15 DS15 and DS25 contain two built-in PCI Ethernet adapters. Models and names (EI* or EW*) of them depend on configuration addon. Choose one of the two or none, but not both. The first instantiates onboard network interfaces as EIA and EWA. While the second - EWA and EWB (enabled by default for backward compatibility) Example:
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Follow this link for more details of CHARON-AXP network controllers configuration.
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Disk/tape subsystem
The next step is configuration of the disk/tape subsystem and mapping it to system resources using the samples given in the template configuration files.
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Follow this link for details of KZPBA controllers configuration.
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KGPSA-CA PCI FC disk controller
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Follow this link for details of KGPSA-CA controllers configuration.
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KGPSA-CA mapping to the host resources
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Numbers in the square brackets represent KGPSA-CA units. They can be in the range 0..32766, but no more than 255 units can be configured on a single controller.
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KGPSA-CA pass through mode
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Follow this link for detailed description of building and installation of an EMULEX LightPulse PCI/PCI-X/PCIe FC adapter driver.
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Auto boot
CHARON-AXP can be configured to automatically boot an operating system at start up by specifying the default boot device and setting the 'auto_action' parameter to 'restart' from the console.
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