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break
break
To set or clear the debugger breakpoint, use the break command in ROM monitor mode.
Syntax Description
-s address
-c
Defaults
If no arguments are given, the command displays the currently-defined breakpoint.
Command Modes
ROM monitor
Command History
Release
11.3 NA
12.1(5)EC
12.2(4)BC1
Usage Guidelines
The ROM monitor supports one breakpoint. If set, the processor runs normally, but when its program
counter reaches the breakpoint address, the system breaks into ROM monitor mode. You can examine
memory locations or register contents, and then continue normal program execution by using the
command.
Examples
The following example shows how to set a breakpoint so that when the processor breaks into ROM
monitor mode when its program counter reaches 0xbfc02708:
rommon 37 > break -s 0xbfc02708
breakpoint set to 0xbfc02708
rommon 38 >
The following example shows how to display the currently-defined breakpoint:
rommon 38 > break
breakpoint set to 0xbfc02708
rommon 39 >
Cisco Broadband Cable Command Reference Guide
A-12
break [-s address | -c]
(Optional) Sets the breakpoint to the specified address in memory. The address
must be specified in hexadecimal.
(Optional) Clears the currently-defined breakpoint.
Modification
This command was introduced on Cisco uBR7200 series routers.
Support was added for Cisco uBR7100 series routers.
Support was added for the Cisco uBR10012 router. Changes were also made
to the boot procedure after breaking into ROMMON to ensure that all
hardware and software registers are in a known state before loading the new
image.
Appendix A
Using the ROM Monitor
OL-1581-07
cont
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