6. Appendix
User’s Manual
85
Table 6.1. I/O Port Addresses < 2 / 2 >
ADDRESS(HEX)
Description
Remark
CF0 to CFF
Reserved for system
4000 to 4007
RAS functions
4008 to 400F
Reserved for system
46E8
Reserved for system
83D0 to B3D3
Reserved for system
Interrupt Level List
Table 6.2. Hardware Interrupt Levels (Factory Settings)
Type
8259
Priority
Description
Vector
Remarks
NMI
High
-I/O CHECK
02H
IRQ0
MASTER
↑
Timer 0
08H
IRQ1
"
⎪
Keyboard
09H
IRQ2
"
⎪
Interrupt controller 2
(slave)
0AH
IRQ8
SLAVE
⎪
Real-time clock
70H
IRQ9
"
⎪
ACPI
71H
IRQ10
"
⎪
Reserved for PCI device
72H
LAN2, USB
IRQ11
"
⎪
Reserved for PCI device
73H
LAN1, USB
IRQ12
"
⎪
Not in use
74H
IRQ13
"
⎪
Reserved for
coprocessor
75H
IRQ14
"
⎪
Reserved for hard disk
76H
Primary
IRQ15
"
⎪
Reserved for optional
CD-ROM
77H
Secondary
IRQ3
MASTER
⎪
Serial port B (COM2)
0BH
IRQ4
"
⎪
Serial port A (COM1)
0CH
IRQ5
"
⎪
Reserved for PCI device
0DH
USB, VIDEO, PCMCIA
IRQ6
"
↓
Not in use
0EH
IRQ7
"
Low
Reserved for PCI device
0FH
USB