Router#sh ver
Cisco Internetwork Operating System Software 
IOS (tm) 3600 Software (C3660-IO3-M), Version 12.3(21), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by cisco Systems, Inc.
Compiled Mon 06-Nov-06 14:47 by ccai
Image text-base: 0x60008AF4, data-base: 0x60E60000

ROM: System Bootstrap, Version 12.0(6r)T, RELEASE SOFTWARE (fc1)
ROM: 3600 Software (C3660-IO3-M), Version 12.3(21), RELEASE SOFTWARE (fc2)

Router uptime is 39 minutes
System returned to ROM by power-on
System image file is "flash:c3660-io3-mz.123-21.bin"

cisco 3660 (R527x) processor (revision 1.0) with 254976K/7168K bytes of memory.
Processor board ID JMX0643L09P
R527x CPU at 225MHz, Implementation 40, Rev 10.0, 2048KB L2 Cache
Bridging software.
X.25 software, Version 3.0.0.


3660 Chassis type: ENTERPRISE
3 FastEthernet/IEEE 802.3 interface(s)
 --More--         4 Serial network interface(s)
DRAM configuration is 64 bits wide with parity disabled.
125K bytes of non-volatile configuration memory.
24576K bytes of processor board System flash (Read/Write)
16384K bytes of processor board PCMCIA Slot0 flash (Read/Write)
16384K bytes of processor board PCMCIA Slot1 flash (Read/Write)

Configuration register is 0x2102

Router#sh flash all
Partition   Size    Used      Free      Bank-Size  State	  Copy Mode
  1        24063K  13428K    10635K     8192K      Read/Write 	  Direct

System flash directory:
File  Length   Name/status
        addr      fcksum  ccksum
  1   9163560  c3660-io3-mz.123-21.bin  
        0x40      0xD912  0xD912
  2   4586584  c3660-i-mz.121-27b.bin  
        0x8BD3A8  0x5860  0x5860
[13750272 bytes used, 10891260 available, 24641532 total]
24576K bytes of processor board System flash (Read/Write)

   Chip    Bank    Code      Size      Name
    1      1       01AD      2048KB    AMD   29F016
    2      1       01AD      2048KB    AMD   29F016
    3      1       01AD      2048KB    AMD   29F016
    4      1       01AD      2048KB    AMD   29F016
    1      2       01AD      2048KB    AMD   29F016
    2      2       01AD      2048KB    AMD   29F016
    3      2       01AD      2048KB    AMD   29F016
    4      2       01AD      2048KB    AMD   29F016
    1      3       89A0      2048KB    INTEL 28F016SA
    2      3       89A0      2048KB    INTEL 28F016SA
    3      3       89A0      2048KB    INTEL 28F016SA
    4      3       89A0      2048KB    INTEL 28F016SA
Router#