Installation guide

F-2 Cisco 4000 Series Installation Guide
Entering the ROM Monitor Program
Timesaver Break (system interrupt) is always enabled for 60 seconds after rebooting the
system, regardless of whether Break is configured to be off by setting the configuration
register. During the 60-second window, you can use Break to get to the ROM monitor
prompt.
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.