Motorola 700/800-Series User Manual

Network I/O Support

3-19

specifically tailored for the disk drive controller it is sent to. Refer 
to documentation on the particular controller module for the 
format of its packets, and for using the 

 command. 

162Bug initializes the parameter tables for a default configuration 
of controllers and devices (refer to Appendix B). If the system needs 
to be configured differently than this default configuration (for 
example, to use a 70MB Winchester drive where the default is a 
40MB Winchester drive), then these tables must be changed. 

There are two ways to change the parameter tables: 

❏

Using 

 or 

. When you invoke one of these commands, 

the configuration area of the disk is read and the parameters 
corresponding to that device are rewritten according to the 
parameter information contained in the configuration area. 
This is a temporary change. If a cold-start reset occurs, then 
the default parameter information is written back into the 
tables. 

❏

Using the 

. You can use this command to reconfigure the 

parameter table manually for any controller and/or device 
that is different from the default. This is also a temporary 
change and is overwritten if a cold-start reset occurs. 

162Bug returns an error code if an attempted disk operation is 
unsuccessful. 

The Network Boot Firmware provides the capability to boot the 
CPU through the Flash/PROM debugger using a network (local 
Ethernet interface) as the boot device.