System information

Book Title
Memory Maps
B-508
Table B-4 Cisco 3000 Memory Map
Table B-5 Cisco 3104 and Cisco 3204 Memory Map
08000000–081FFFFF 8/16 Onboard boot EPROMs (remapped) 1 or 2 MB, when
PCMCIA Flash memory
card is installed
Address Description Comments
00000000–00FFFFFF Main memory DRAM
01000000–011FFFFF Secondary DRAM
02000000–0201FFFF NVRAM
02100000–02100FFF Channel B: 68302 registers
02101000–02101FFF Channel B: 63802 RAM
02110000 System control register 1
02110002 System control register 2
02110100 System status register
02110040–0211005F Cookie
02120000–02120003 Counter/timer (CNTR)
02120040 Counter control register (CCTL)
02120100–0212013F Console ports
02130000–02130003 Channel A: LANCE chip
02130040–02130043 Channel B: LANCE/serial chip
02130080–02130083 Channel B: serial DTR register
03000000–03FFFFFF Flash memory
04000000–042FFFFF Secondary RAM When main memory = 16 MB
Address Description Comments
00000000–00FFFFFF Main DRAM 1-, 4-, 8-, and 16-MB sizes
01000000–010FFFFF Boot EPROMs for ROM monitor
and bootstrap image
01000000–011FFFFF Boot Flash memory for ROM monitor
and bootstrap image
Onboard Flash memory or
PCMCIA Flash memory
card, 2 MB
02000000–0201FFFF Configuration NVRAM 32 or 128 KB size
02100000–0213FFFF Onboard registers and chips
03000000–03FFFFFF Flash memory SIMM Up to 16 MB
04000000–041FFFFF I/O memory (packet memory) 512 KB or 2 MB sizes
08000000–081FFFFF Remapped onboard boot Flash memory Remapped when PCMCIA
Flash memory card is installed
Address Bit Width Description Comments