Motorola MVME187 User Manual

Setting Environment to Bug/Operating System

A-3

Once modification and update are complete, you can now display 
the current contents as described earlier. 

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The 

 command allows you to interactively view and 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 

 command. Once the 

 command 

is invoked and executed without error, Bug default and/or user 
modified parameters are loaded into NVRAM along with 
checksum data. The operational parameters that have been 
modified will not be in effect until a reset/power-up condition. 

If the 

 command is invoked with no options on the command 

line, you are prompted to configure all operational parameters. If 
the 

 command is invoked with the option 

, ROM defaults will 

be loaded into NVRAM.