14
Chapter 1
NOTE:
N - Not be used
170-177
Secondary IDE
1F0-1F7
Primary IDE
278-27F
Parallel Printer Port 2
2F8-2FF
Serial Asynchronous Port 2
378-37F
Parallel Printer Port 1
3F0-3F5
Floppy Disk Controller
3F6-3F6
Secondary IDE
3F7-3F7
Primary IDE
3F8-3FF
Serial Asynchronous Port 1
0CF8
Configuration Address Register
0CFC
Configuration Data Register
778-77A
Parallel Printer Port 1
IRQ Assignment Map
IRQx
System Devices
Add-On-Card Devices
IRQ0
Timer
N
IRQ1
Keyboard
N
IRQ2
Cascade Interrupt Control
N
IRQ3
Serial Alternate
Reserved
IRQ4
Serial Primary
Reserved
IRQ5
MPU-401(Alternate)
Reserved
IRQ6
Floppy Disk
Reserved
IRQ7
Parallel Port
ReservedReserved
IRQ8
Real Time Clock
N
IRQ9
N
Reserved
IRQ10
N
Reserved
IRQ11
N
Reserved
IRQ12
PS/2 Mouse
Reserved
IRQ13
Math Coprocessor Exception
N
IRQ14
Primary IDE
Reserved
IRQ15
Secondary IDE
Reserved
I/O Address Map
Hex Range
Devices