Inova ICP-PII Manual De Usuario

Page 2-4

Doc. PD00581013.004

The original PC-XT and PC-AT desktop computer (ISA bus) specification allows for 10-bit I/O
addressed peripherals. This permits peripheral boards to be I/O mapped from 0h to 3FFh.
CompactPCI systems permit the full 16-bit addressing capability of the Intel 80x86 ‘processors,
from 0h to 0FFFFh.

All Inova CPU boards include peripheral devices requiring I/O address space on board and hence
the BIOS automatically assigns the I/O address required by peripheral boards and PCI devices at
boot time based on the requirements of each device. The assigned addresses can be determined
by reading the configuration address space registers using special software tools.

$000 - $00F

8237 DMA controller #1

$020 - $021

8259 Master Interrupt Controller

$040 - $043

8254 Programmable Interrupt Timer

$060 - $06F

8042 Keyboard Controller

$070 – $071

CMOS RAM, NMI Mask Reg., RTC

$080 - $08B

DMA page registers

$0A0 - $0BF

8259 Slave Interrupt Controller

$0C0 – $0DF

8237 DMA Controller #2

$0F0

Coprocessor Error Ignored Register

$170 - $177

*)

Secondary Hard Disk Controller

$1F0 - $1F8

*)

Primary Hard Disk Controller

$200 - $207

Reserved (Game Port)

$238 - $23B

Bus Mouse

$2E0 - $2E7

Reserved (GPIB)

$2E8 - $2EF

Reserved (Serial Port)

$2F8 - $2FF

*)

Serial Port (COM2)

$CF8 

PCI Configuration Address

$CFC

PCI Configuration Data