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Book Title

Memory Maps

B-514

Table B-15 RP/Cisco 7000 Series Memory Map

Address Description Comments

000000–3FFFFF ROM 4 MB or less

400000–407FFF EEPROM (NVRAM) 32 KB

420000–427FFF LCD registers (not used) —

428000–42FFFF Future hardware —

430000–440000 Reserved —

460000–460004 LANCE registers Ethernet controller registers

500000–50007F Octal UART 0 —

500400–50047F Octal UART 1 —

600000–7FFFFF Onboard RAM —

800000–BFFFFF 2-MB SIMM expansion —

800000–FFFFFF 8-MB SIMM expansion —

Address Bit Width Description Comments

00000000–0FFFFFFF DRAM —

10000000–100FFFFF ROML —

10400000–104FFFFF ROMU —

11000000–110FFFFF Multibus memory —

11100000–1110FFFF Multibus I/O —

11110000–1112FFFF Local I/O —

11130000–11130FFF Diagnostic bus —

11131000–111314FF ID PROM —

11140000–1115FFFF NVRAM —

12000000–13FFFFFF Internal Flash memory —

14000000–15FFFFFF External Flash memory card —

11110000 16 System control —

11110100 32 System status register —

11110400 Flash memory card status —

11110C00 I/O address base SwitchBus address space. Each unit

occupies 64 bytes (0x40).

11120000 8 Counter timer —

11120040 8 Counter control register —

11120100–1112013F 8 Serial I/O ports —

11120200 Environmental monitor

control

16 bits

11120300 Environmental monitor

status

32 bits

11130000 Diagnostic bus —