D-2 Cisco 4000 Series Hardware Installation and Maintenance
Entering the ROM Monitor Program
Available ROM Monitor Commands
At the ROM monitor prompt, enter ? or help at the rommon 1 > prompt to display a list of available
commands and options, as follows:
rommon 1 > ?
help monitor builtin command help
boot boot up an external process
dir list files in file system
dev list the device table
confreg configuration register utility
reset system reset
stack produce a stack trace
context display the context of a loaded image
frame print out a selected stack frame
sysret print out info from last system return
meminfo main memory information
rommon 2 >
Note Further information about a command can be displayed by entering the command name with
a -? option, which will cause the command usage message to be printed.
ROM Monitor Command Conventions
Following are ROM monitor command conventions:
• Brackets [ ] denote an optional field. If a minus option is followed by a colon (for example: [-s:])
the user must provide an argument for the option.
• A word in italics means that the user must fill in the appropriate information.
• All of the built-in commands can be aborted (user interrupt signal) by pressing the <break> key
at the console.
The following case-sensitive ROM monitor commands are among the most useful:
• help—The help command prints a summary of the ROM monitor commands to the console
screen.This is the same output as entering ?.
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