C-9
Cisco IAD2430 Series Integrated Access Devices Software Configuration Guide
OL-4306-03
Appendix C Using the ROM Monitor
Exiting the ROM Monitor
R24 = 0xffffffff R25 = 0xffffffff R26 = 0xffffffff R27 = 0xffffffff
R28 = 0xffffffff R29 = 0xffffffff R30 = 0xffffffff R31 = 0xffffffff
•
frame
—Displays an individual stack frame.
•
sysret
—Displays return information from the last booted system image. This information includes
the reason for terminating the image, a stack dump of up to eight frames, and, if an exception is
involved, the address where the exception occurred; for example:
rommon 8>
sysret
System Return Info:
count: 19, reason: user break
pc:0x801111b0, error address: 0x801111b0
Stack Trace:
FP: 0x80005ea8, PC: 0x801111b0
FP: 0x80005eb4, PC: 0x80113694
FP: 0x80005f74, PC: 0x8010eb44
FP: 0x80005f9c, PC: 0x80008118
FP: 0x80005fac, PC: 0x80008064
FP: 0x80005fc4, PC: 0xfff03d70
FP: 0x80005ffc, PC: 0x00000000
FP: 0x00000000, PC: 0x00000000
•
meminfo
—Displays size in bytes, starting address, available range of main memory, the starting
point and size of packet memory, and size of NVRAM; for example:
rommon 9>
meminfo
Main memory size: 40 MB.
Available main memory starts at 0x10000, size 40896KB
IO (packet) memory size: 5 percent of main memory.
NVRAM size: 32KB
Exiting the ROM Monitor
You must set the configuration register to a value from 0x2 to 0xF for the router to boot a Cisco IOS
image from flash memory upon startup or reloading.
The following example shows how to reset the configuration register and cause the router to boot a
Cisco IOS image stored in flash memory:
rommon 1 >
confreg 0x2101
You must reset or power cycle for new config to take effect:
rommon 2 >
boot
The router will boot the Cisco IOS image in flash memory. The configuration register will change to
0x2101 the next time the router is reset or power cycled.