sn0msc(1M)                                                          sn0msc(1M)



NAME
     sn0msc - Perform Origin and Onyx2 system controller operations

SYNOPSIS
     /usr/etc/sn0msc -r [ -x ] elscnvramdev addr [ count ]
     /usr/etc/sn0msc -w elscnvramdev addr value [ count ]
     /usr/etc/sn0msc -c elsccontrollerdev command

DESCRIPTION
     sn0msc performs operations on the Origin and Onyx2 Module System
     Controllers (MSCs).

     WARNING: If used improperly, this command may cause system malfunction
     that is not fixed by system reset or power cycling.  See below for more
     information.

     There are three basic operations controlled by the flags given:

     -r   Reads the MSC NVRAM contents of a specific MSC device
          (elscnvramdev) at a specific address (addr) for a specific number
          of bytes (count, default 1).  Output is in hex if the -x flag is
          given, decimal otherwise.

     -w   Writes the MSC NVRAM contents of a specific MSC device
          (elscnvramdev) at a specific address (addr) with a specific value
          (value) for a specific number of bytes (count, default 1).

     -c   Executes an MSC command on a specific MSC device
          (elsccontrollerdev) and displays the output from the MSC.  Certain
          commands may cause the system to function incorrectly.  Commands
          that include white space must be quoted from the shell.

     The NVRAM contains 2048 bytes.

     A corrupted MSC NVRAM can be repaired by writing zeroes over the entire
     contents of the NVRAM, power-cycling the MSC from the main breaker or
     power plug, and setting the module number back to the correct value.

FILES
     /hw/module/N/elsc/controller    elsc controller devices
     /hw/module/N/elsc/nvram         elsc NVRAM devices

SEE ALSO
     mmscd(1M), sn0log(1M)











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