Emerson PMPPC7448 사용자 설명서

PmPPC7448 User’s Manual

This chapter describes the monitor’s basic features, operation, and configuration 
sequences. This chapter also serves as a reference for the monitor commands and func-
tions.

The PmPPC7448 monitor uses a command-line interface with the following features:

After entering a command, you can re-execute it simply by pressing the ENTER or RETURN 
key.

You can use the TFTP protocol to load application images via Ethernet into the 
PmPPC7448’s memory.

You can store specific boot commands in the environment to be executed automatically 
after reset.

You can write application images into Flash via the U-Boot command line. One megabyte at 
the base of Flash is reserved for the monitor.

At power-up or after a reset, the monitor runs diagnostics and reports the results in the 
start-up display, see 

. During the power-up sequence, the monitor configures the 

board according to the environment variables (see “Environment Variables” on 
page 11-22) and settings in the Board Configuration registers (see “Board Configuration 
Registers” on page 7-6). If the configuration indicates that autoboot is enabled, the moni-
tor attempts to load the application from the specified device. If the monitor is not config-
ured for autoboot or a failure occurs during power-up, the monitor enters normal 
command-line mode.