Motorola MVME162 User Manual

Set Environment to Bug/Operating System

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The ENV command allows you to interactively view/configure all Bug 
operational parameters that are kept in Battery Backed Up RAM (BBRAM), 
also known as Non-Volatile RAM (NVRAM). The operational parameters are 
saved in NVRAM and used whenever power is lost.

Any time the Bug uses a parameter from NVRAM, the NVRAM contents are 
first tested by checksum to insure the integrity of the NVRAM contents. In the 
instance of BBRAM checksum failure, certain default values are assumed as 
stated below.

The bug operational parameters (which are kept in NVRAM) are not 
initialized automatically on power up/warm reset. It is up to the Bug user to 
invoke the ENV command. Once the ENV command is invoked and executed 
without error, Bug default and/or user parameters are loaded into NVRAM 
along with checksum data. If any of the operational parameters have been 
modified, these new parameters will not be in effect until a reset/powerup 
condition.

If the ENV command is invoked with no options on the command line, you are 
prompted to configure all operational parameters. If the ENV command is 
invoked with the option D, ROM defaults will be loaded into NVRAM.