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 eisa_config(1M)					     eisa_config(1M)

      eisa_config - EISA configuration tool


      eisa_config [-a]

      eisa_config [-c cfgfile]

      eisa_config [-n scifile]

      eisa_config is a specialized program for configuring EISA and ISA
      (referred to collectively as E/ISA) I/O boards on HP-UX workstations
      equipped with EISA backplanes.  It is used each time the E/ISA
      configuration is to be changed in any way; i.e., whenever an EISA or
      ISA board is added to the system, removed from the system, or moved to
      a different location in the system.  eisa_config should be run before
      any physical board configuration or installation changes are made.
      (This is not necessary in some cases -- see automatic mode below.)

      eisa_config interprets information stored in configuration files and
      uses it to configure system resources needed to properly interact with
      E/ISA boards.  Even though they may be physically present in the
      computer, E/ISA boards cannot be used by the HP-UX operating system
      until configuration by eisa_config is complete.

      The eisa_config command takes one of four forms:

		     Use interactive commands to examine or modify
		     configuration.  eisa_config prompts for a command,
		     executes it, reports the results of command execution,
		     then prompts for the next command.

	   eisa_config -a
		     Attempt to automatically add new EISA boards to the
		     configuration.  This option is used by /sbin/bcheckrc
		     but should not be used elsewhere.	ISA boards cannot be
		     added with this option.

	   eisa_config -c cfgfile
		     Check configuration (CFG) file (discussed below).	This
		     option is used mostly by E/ISA board developers.  It
		     simply checks the specified CFG file to verify that it
		     follows correct grammar and can be used by eisa_config.
		     This option does not affect current configuration in
		     any way.

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 eisa_config(1M)					     eisa_config(1M)

	   eisa_config -n scifile
		     Non-target mode.  This option uses the contents of
		     scifile instead of non-volatile memory (NVM) to set up
		     E/ISA configuration, and is most commonly used for
		     creating identical configurations on multiple

    Assigning Resources
      Depending on their design, internal capabilities, and their role in
      system operation, E/ISA boards use various combinations of one or more
      system resources such as DMA channels, interrupt lines, memory, etc.
      Also, given boards do not always use a full set of system resources;
      for example, EISA provides 11 interrupt lines, but a given board might
      be able to use only lines 3, 5, and 6.  Thus a means for the board to
      determine what resources are to be used must be provided.

      ISA boards use physical switches or jumpers on the board to specify
      what resources are to be used.  The person installing the board sets
      the switches or jumpers as specified by the board's manufacturer and
      based on system needs.  There are thousands of different kinds of ISA
      boards, but unfortunately there are no standard conventions for switch
      and jumper usage.	 This results in much confusion and numerous
      configuration problems.  For example, it is easy to inadvertently
      assign a given resource to two different boards, but often very
      difficult to diagnose the problem.

      EISA boards usually have no switches or jumpers for resource
      assignment.  Instead, each EISA board has a corresponding
      configuration (CFG) file that tells the system how the board can be
      used and what resources it needs.	 eisa_config is the HP-UX system
      program that interprets the various CFG files for all boards in the
      system, then builds a conflict-free configuration.

    Configuration Files
      All EISA boards have a corresponding CFG file.  ISA boards, when used
      in HP-UX systems, must also have a corresponding CFG file.  Although
      eisa_config cannot automatically configure an ISA board, it can use
      the contents of the CFG file to determine what switch or jumper
      settings on an ISA board can be used to prevent resource conflicts.

      eisa_config expects to find a CFG file for each E/ISA board connected
      to the workstation.  The administrator is responsible for making sure
      that these CFG files are present in directory /sbin/lib/eisa.  CFG
      files corresponding to boards being used should always be kept in this
      directory.  Do not remove them after eisa_config is run the first
      time, because they will be needed every time the configuration is
      changed, such as when a new board is added or one is removed.  Do not
      change the file names of the CFG files.  The file name has a specific
      format which is used by eisa_config to automatically match a board
      with its CFG file.

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 eisa_config(1M)					     eisa_config(1M)

      CFG files are normally supplied by the E/ISA board manufacturer.	Two
      scenarios apply:

	   +  If the E/ISA board is supplied by HP, the CFG file
	      corresponding to the board is loaded into /sbin/lib/eisa as
	      part of normal operating system installation.  It should never
	      be removed.

	   +  If the E/ISA board is not supplied by HP, install both the CFG
	      file and the software driver for the board from HP-UX-readable
	      media supplied by the board manufacturer.	 Copy the CFG file
	      to directory /sbin/lib/eisa where it must remain as long as
	      the card is present in the system.

      All CFG files must follow a grammar specified in the EISA bus
      specification.  The most basic building block in the CFG grammar is
      the board.  Each board has several attributes including board ID (to
      match with a board's ID register), manufacturer, ASCII text describing
      what the board does, what kinds of slots the board can go in, whether
      the board has a readable ID register, and various other capability

      Each file can also contain lists of board-wide resources (such as I/O
      registers, switches, and jumpers) and how they should be initialized.

      A board can be treated as a set of one or more functions where a given
      board contains a single function or multiple functions.  An example of
      a two-function board is one having both a serial port and a parallel
      printer port.  Each function has a separate block in that board's CFG
      file.  Each function has a name, a type, and a set of configuration

      Each choice block has a name and a set of attributes.  These
      attributes include what resources the choice requires and whether the
      function is enabled or disabled by that choice.  Initialization is
      also usually specified within a choice.  A given choice might require
      that certain registers be initialized to a specified value and that
      switches be set in a certain way.

    Configuration Processing
      E/ISA configuration is handled as follows:

	   +  eisa_config builds a conflict-free configuration, then saves
	      the configuration in EISA non-volatile memory (NVM).

	   +  Appropriate drivers and device files must be installed before
	      rebooting the system.

	   +  Next time the operating system is rebooted, the HP-UX kernel
	      initializes the specified E/ISA boards according to the
	      contents of NVM.

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 eisa_config(1M)					     eisa_config(1M)

      If a board is currently present in the system, but has no
      corresponding configuration data in NVM, the EISA board cannot be used
      until the eisa_config program is run again and the new board is
      accounted for in NVM.  A newly installed or existing E/ISA board is
      not usable until eisa_config has added it and the system has been
      rebooted with the necessary drivers and device special files
      installed.  See EXAMPLES for an illustration of how to add a new board
      to the system.

      It is possible to add EISA boards that do not have switches or jumpers
      to the configuration without running eisa_config interactively.  The
      /sbin/bcheckrc script invokes eisa_config with automatic mode during
      each system initialization.  If a board has been added since the last
      time eisa_config was executed, eisa_config attempts to add the new
      board to the configuration.  If the new board is successfully added,
      the system may need to be rebooted (/sbin/bcheckrc does this
      automatically).  If the new board could not be added to the
      configuration, a warning is written to the system console and

      In addition to writing to NVM, eisa_config also automatically saves
      the current configuration to an SCI file called /etc/eisa/system.sci.
      SCI files can also be created by the interactive save command (see
      below).  The E/ISA subsystem can also be initialized from an SCI file,
      rather than from NVM by using the eisa_config -n command form
      discussed earlier.  SCI files are quite useful when a site has several
      identically-configured workstations.  Run eisa_config on one system
      and save the configuration in an SCI file.  Copy this file to other
      systems, then use it to initialize those systems.	 Remember that the
      configuration must be saved to NVM and the system rebooted before the
      E/ISA boards can be used.

    Drivers and Device Files
      Running eisa_config is not the only task necessary when adding an
      E/ISA board to a system.	Corresponding I/O drivers must be added to
      the kernel and appropriate device files must be created.	These steps
      are the same as is required for any I/O card, and can be performed
      either before or after running eisa_config.  The important thing to
      remember is that the E/ISA board cannot be used until all necessary
      tasks are complete.

    Interactive Commands
      If the command form eisa_config is used, eisa_config runs in
      interactive mode.	 Interactive mode conducts configuration changes by
      using a series of keyboard commands.  eisa_config prompts for a
      command, executes it, displays the results of executing the command,
      then prompts for the next command.  Interactive commands are broadly
      grouped into five categories:

	   action      Alter the configuration in some way.

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 eisa_config(1M)					     eisa_config(1M)

	   display     Show current configuration.

	   cfg	       Manage CFG files.

	   comments    Display help and comments information found in CFG

	   help	       Help for using eisa_config interactive commands

      The action commands are:

	   add cfgfile slotnum Adds a board to the current configuration.
			       cfgfile specifies which CFG file corresponds
			       to the board and slotnum identifies the slot
			       where the board resides.

	   remove slotnum      Remove a board from the current
			       configuration.  slotnum identifies the slot
			       where the board currently resides.

	   move curslotnum newslotnum
			       Move a board that is currently configured in
			       one slot to a different slot.  curslotnum and
			       newslotnum specify the current and new slot
			       numbers, respectively.

	   change slotnum functionnum choicenum
			       Change the choice used for a given function.
			       All three arguments, slotnum, functionnum,
			       and choicenum are required.  The function
			       number (functionnum) and choice number
			       (choicenum) can be obtained by using the show
			       board command on the slot in question.
			       Function numbers are of the format Fnum and
			       choice numbers are of the format CHnum.	Note
			       that a board must already be part of the
			       configuration before the change command can
			       be used.

			       When eisa_config adds a board, it selects a
			       choice for each function.  Generally, the
			       first choice for each function is selected
			       (the default).  However, in order to resolve
			       conflicts, eisa_config may select a different
			       choice for a given function.  When specifying
			       a choice for a particular function by use of
			       the change command, eisa_config always uses
			       that choice; it does not select a different
			       one, even when a conflict needs to be

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 eisa_config(1M)					     eisa_config(1M)

	   save [filename]     Save the current configuration.	If the
			       current configuration is not conflict-free, a
			       warning is produced and the save is not done.
			       If you specify a file name, the save is done
			       to that file; otherwise, the save is done to
			       NVM (and the /etc/eisa/system.sci file).
			       Note that the quit command also (optionally)
			       saves the configuration to NVM (and file

			       When the configuration is saved to NVM, a log
			       file is created that provides a brief
			       desription of the new configuration.  The log
			       file is named /etc/eisa/config.log, and
			       contains information generated by a show
			       command, followed by a show board command,
			       followed by a show switch command.

	   init [filename]     Initialize the configuration.  The initial
			       configuration is retrieved from a file if one
			       has been specified.  Otherwise, it is
			       retrieved from NVM.  Note that an implicit
			       init is done when eisa_config is first
			       started.	 This command should only be used
			       when the current configuration eisa_config is
			       dealing with is incorrect.  For example, if
			       you make some changes that you decide you do
			       not want, you can use this command to start

	   quit		       Leave eisa_config.  If the configuration is
			       conflict-free and has been changed, you are
			       asked if you want to save the configuration
			       (to NVM).  If any switches or jumpers have to
			       be changed as a result of this new
			       configuration, you are notified of these
			       changes prior to saving the configuration.
			       Be sure that all switches and jumpers match
			       what eisa_config has specified before booting
			       the system.

			       When the configuration is saved to NVM, a log
			       file is created that provides a brief
			       desription of the new configuration.  The log
			       file is named /etc/eisa/config.log, and
			       contains information generated by a show
			       command, followed by a show board command,
			       followed by a show switch command.

      The show (display) commands are:

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 eisa_config(1M)					     eisa_config(1M)

	   show		       List all slots and their current status;
			       i.e., whether occupied by a particular board,
			       or empty.

	   show slots cfgfile  List all of the slots that could accept the
			       board corresponding to the CFG file cfgfile.

	   show board [cfgfile|slotnum]
			       List the basic attributes for the selected
			       board or boards.	 Includes a list of all the
			       functions on the board and a list of all
			       available choices for each function.  If the
			       board is currently part of the configuration,
			       the currently selected choice is marked.	 The
			       default choice is the first choice listed for
			       each function.  If a board is not specified
			       (either by CFG file name or slot number),
			       information is displayed for each of board
			       installed and configured in the system.

	   show switch [changed] [slotnum]
			       List the switch and jumper settings (both
			       default and required) for the boards in the
			       configuration.  If the keyword changed is
			       used, only those switches and jumpers that
			       were changed from the previous configuration
			       are displayed.  If a slot number is
			       specified, only switches and jumpers on the
			       board in that slot are displayed.  Note that
			       show switch supports all combinations of
			       changed and slotnum.

      There are two kinds of cfg commands:

	   cfgtypes	       List the types of boards that have CFG files
			       in directory /sbin/lib/eisa and how many CFG
			       files in /sbin/lib/eisa are of each type.

	   cfgfiles [type]     List all CFG files that are currently
			       available for use in the /sbin/lib/eisa
			       directory.  If a specific board type is
			       specified, only CFG files of that type are

      comment commands extract the help and comments text provided in the
      specified CFG file or files.  Both help and comments are displayed if
      they are available.  Each command form accepts as an argument either a
      CFG file or a slot number identifying which board you want help for.

	   comment board [cfgfile|slotnum]
			       Display board-level help and comments.

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 eisa_config(1M)					     eisa_config(1M)

	   comment function [cfgfile|slotnum]
			       Display function-level help and comments.

	   comment choice [cfgfile|slotnum]
			       Display choice-level help.

	   comment switch [cfgfile|slotnum]
			       Display help and comments for switches and/or
			       jumpers as appropriate.

	   Note that all arguments (except the type of comments requested)
	   are optional.  If no optional argument is specified, all
	   available comments for the specified file or board are extracted.
	   For example:

	   comment board 1     Display help and comments available for the
			       board currently configured in slot 1.

	   comment board       Display help and comments available for all
			       currently configured boards.

      The help commands explain how to use the eisa_config interactive
      commands.	 If no other arguments are given, help is displayed for all
      of the interactive commands.  Alternatively, any valid command can be
      used as a argument to the help command.  Help is then given for the
      specified command only.

	   help		       Display a brief explanation of all valid
			       eisa_config interactive commands.

	   help [cmdname]      Display an explanation of the command

      Add a new E/ISA board to the system:

	   1. Load the CFG file (from media provided by the manufacturer)
	      into directory /sbin/lib/eisa if the file is not already

	   2. Run eisa_config.	eisa_config reads the contents of NVM to
	      obtain current system configuration.

	   3. Use the interactive add command to add the new board.
	      eisa_config reads the corresponding CFG file to obtain needed
	      configuration information.

	   4. Exit eisa_config, noting any required switch or jumper
	      settings.	 eisa_config generates a new configuration and
	      writes it to NVM.	 The required switch and jumper settings are
	      also saved in the log file /etc/eisa/config.log.

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 eisa_config(1M)					     eisa_config(1M)

	   5. Add the correct software drivers for the board (and board
	      devices) to the kernel, and use mknod(1M) to create any needed
	      device special files.

	   6. Shut down and disconnect power to the system.

	   7. Install the E/ISA board after changing any switch or jumper
	      settings required by eisa_config.

	   8. Reboot the system.  When the system is running again, the
	      contents of NVM will match the E/ISA boards present in the
	      system, and the newly added board can be used immediately.

      This procedure can also be used to add multiple new boards at the same
      time.  Simply use the add command once for each board and alter the
      other steps as appropriate.

      If the board to be added is an EISA board that does not have switches
      or jumpers, the board can be added via automatic mode; that is, steps
      2-4 above can be skipped.

      eisa_config was developed by HP and Compaq.

      /sbin/lib/eisa/!XXX0000.CFG	      CFG files
      /etc/eisa/config.err		      errors encountered in
					      automatic mode
      /etc/eisa/config.log		      log file containing current
					      E/ISA configuration
      /etc/eisa/system.sci		      mirror image of configuration
					      saved to NVM

      config(1M), mknod(1M).

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