Emerson PMPPC7448 user manual Monitor: Memory Commands, dhcp, rarpboot, tftpboot

Models: PMPPC7448

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Monitor: Memory Commands

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dhcp

The dhcp command invokes a Dynamic Host Configuration Protocol (DHCP) client to obtain IP and boot parameters by sending out a DHCP request and waiting for a response from a server.

DEFINITION: dhcp [load address] [bootfilename]

rarpboot

The rarpboot command boots an image via a network connection using the RARP/TFTP protocol. If loadaddress or bootfilename is not specified, the environment variables loadaddr and bootfile are used as the default.

DEFINITION: rarpboot [loadAddress] [bootfilename]

tftpboot

The tftpboot command loads an image via a network connection using the TFTP protocol. The environment variable’s ipaddr and serverip are used as additional parameters to this command. If loadaddress or bootfilename is not specified, the environment variables loadaddr and bootfile are used as the default.

The port used is defined by the ethport environment variable. If all is selected for ethport, the TFTP process will cycle through each port until a connection is found or all ports have failed.

DEFINITION: tftpboot [loadAddress] [bootfilename]

MEMORY COMMANDS

The memory commands allow you to manipulate specific regions of memory. For some memory commands, the data size is determined by the following flags:

DEFINITION: The flag .b is for data in 8-bit bytes.

DEFINITION: The flag .w is for data in 16-bit words.

DEFINITION: The flag .l is for data in 32-bit long words.

These flags are optional arguments and describe the objects on which the command oper- ates. If you do not specify a flag, memory commands default to 32-bit long words. Numeric arguments are in hexadecimal.

cmp

The cmp command compares count objects between addr1 and addr2. Any differences are displayed on the console display.

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PmPPC7448 User’s Manual

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Page 113
Image 113
Emerson PMPPC7448 user manual Monitor: Memory Commands, dhcp, rarpboot, tftpboot