Motorola 700/800-Series 사용자 설명서

Set Environment to Bug/Operating System

A-3

Modification is possible through use of the commandÕs

 option. 

At the end of the modification session, you are prompted for the 
update to Non-Volatile RAM (NVRAM). A 

Y

 response must be 

made for the update to occur; any other response terminates the 
update (disregards all changes). The update also recalculates the 
checksum. 

Be cautious when modifying parameters. Some of these parameters 
are set up by the factory, and correct board operation relies upon 
these parameters. 

Once modification/update is complete, you can display the current 
contents as described earlier. 

 [

[

]] 

The 

 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. 

Whenever 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 
parameters are loaded into NVRAM along with checksum data. If 
any of the operational parameters have been modified, the new 
parameters do not go into effect until a reset/powerup condition 
occurs. Should you determine that the NVRAM contents have been 
corrupted, use a double-button reset (described under Restarting the 
System in Chapter 3) to reinitialize the system.