NVRAM Contents

    DESCRIPTION

	* NVRAM configuration parameters stored in RAM

	* System and Ethernet identifiers(ID)

	* Time-of-day clock(TOD)

	* Battery backup


                                                        < * NVRAM * >
                                                   +---------------------+
                                                   | +-----------------+ |
                                                   | |       RAM       | |
                                                   | +-----------------+ |
                                  +-------------------> Time of Day    | |
                                  |  Configuration   +-----------------+ |
                                  |   Information  | | E'net Address   | |
        < Open Boot PROM >        |   +------------| +-+-------------+-+ |
        +----------------+        |   |            | | |  System ID  | | |
        |       |        |   |            | | +-------------+ | |
        |                |        |   |            | |      |   |      | |
        |   FORTH        |        |   |            | +-------|| ||-----+ |
        |   Language     |  <-----+   |            | |      |   |      | |
        |   commands     |<           |            | |     battery     | |
        |                |  <---------+            | |                 | |
        |                |                         | +-----------------+ |
        |                |                         +---------------------+
        |                |
        |                |                         +---------------------+
        |               <----------------------->  |                     |
        |   FORTH        |      Binary           > |         IU          |
        |   Language     |                        >|    SPARC CPU Chip   |
        |   Interpreter  | Machine instructions  > |                     |
        |               <----------------------->  |                     |
        |                |                         |                     |
        +----------------+                         +---------------------+ 
                                                          <* NVRAM *>

    작성일자 : 1997.05.23
    작 성 자 : 황  순  경