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Table of Contents

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CPU

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ace_mode

The CHARON-VAX emulated CPU is configured with the "ace_mode" parameter.

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RAM

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The CHARON-VAX memory subsystem is permanently loaded and has the logical name "ram".

size

Parametersize
TypeNumeric
ValueSize of emulated memory in MB.

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TOY

CHARON-VAX maintains its time and date via the "toy" (time-of-year) component. In order to preserve time and date while a virtual system is not running, the TOY component uses a binary file on the host system to store date and time relevant data. The name of the file is specified by the “container” option of the "toy" component.

container

Parametercontainer
TypeText string
Value

Specifies a name of a file in which CHARON-VAX preserves time and date during its “offline” period.

This file also keeps some console parameters (such as default boot device).

By default it is left unspecified.

(info) It is recommended to specify the full path to the file

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ROM

The System Flash ROM file conserves specific parameters between reboots.

container

Parametercontainer
TypeText string
Value

Specifies the name of a file in which CHARON-VAX stores an intermediate state of its Flash ROM. 

This state includes, for example, most of the console parameters.

By default it is left unspecified.

(info) It is recommended to specify the full path to the file

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Example:

set rom container="/charon/my_virtual_system.rom"

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EEPROM

container

Parametercontainer
TypeText string
Value

A string specifying a file name to store content of EEPROM.

Example:

set eeprom container="vx6k610.rom"

This command enables EEPROM parameters (e.g., default boot drive) to be automatically saved to a specified file. 

The EEPROM file is created in the directory in which CHARON-VAX starts and is created or overwritten each time any parameter relevant to EEPROM content is changed.

(info) It is recommended to specify the full path to the file

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Auto boot

CHARON-VAX systems may be configured to boot the operating system automatically at start up.

MicroVAX3100, VAXstation 4000, VAX6310 and VAX 4000

Those models boot automatically if correct boot flags are set (and saved in the VAX console files) using the following command:

halt

Console Parameterhalt
Description

Determines whether the MicroVAX3100, VAXstation 4000, VAX6310 and VAX 4000 boot automatically if correct boot flags are set (and saved in the VAX console files).

The value is:

  • "reboot"


Example:

>>>set halt reboot


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MicroVAX II, MicroVAX 3600/3900 and VAXserver 3600/3900 

The ROM of the MicroVAX II, MicroVAX 3600, MicroVAX 3900, VAXserver 3600 and  VAXserver 3900 does not allow the VAX console to accept the command setting "auto-boot". Instead, automatic boot on startup can be specified in the CHARON-VAX configuration file as follows:

bdr boot

Parameterbdr boot
TypeText string
Value

Determines whether the MicroVAX II, MicroVAX 3600, MicroVAX 3900, VAXserver 3600 and  VAXserver 3900 boot automatically if correct boot flags are set (and saved in the VAX console files).The value is:

  • "auto"


Example:

set bdr boot=auto


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VAX66x0

xmi boot

Parameterxmi boot
TypeText string
Value

Determines whether the CHARON VAX66x0 startup procedure stops at the ">>>" prompt after self-tests.

The values are:

  • "auto"
  • "manual" (default)

Example:

set xmi boot = "auto"
The value "autoenables automatic boot from a default boot specification previously configured in the VAX console.The value "manual" disables automatic boot once the self tests are passed.


Warning
Please check that the "toy container" and "rom container" parameters are specified in the configuration file to store the boot flags.


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