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 diag0(7)		       Series 800 Only			    diag0(7)




 NAME
      diag0 - diagnostic interface to HP-PB I/O subsystem

 DESCRIPTION
      diag0 is a diagnostic pseudo-driver, which provides HP support tools
      with access to the HP-PB I/O subsystem. This driver is used by
      hardware monitors and tools within the Support Tools Manager (STM), to
      interact with peripherals connected to the system via HP-PB. The I/O
      drivers also send diagnostic events to diag0 for diagnostic logging by
      the Support Tools Manager.

      Without diag0, information that could help prevent a peripheral
      failure will be lost.  In addition, if a failure occurs, HP will not
      have the tools or data to diagnose the cause of the problem in a
      timely manner.  This may cause increased downtime and possible future
      failures.

 AUTHOR
      diag0 was developed by HP.

 FILES
      /stand/vmunix
      /dev/diag/diag0
      /dev/diag		       directory containing diagnostic device files

 SEE ALSO
      stm(1M) from the Support Tools Manager



























 Hewlett-Packard Company	    - 1 -   HP-UX Release 11i: November 2000