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Appendix C
IRQ and I/O Port Address
The factory-set interrupt requests and I/O port addresses are listed below. Find an appropriate one
to install an optional device.
Interrupt Request
The factory-set IRQs are assigned as follows:
IRQ
Peripheral Device (Controller)
IRQ
Peripheral Device (Controller)
0
System timer
8
Real-time clock
1
Keyboard
9
PCI
2
Cascaded connection
10
PCI
3
COM B
11
PCI
4
COM A
12
Mouse
5
PCI
13
Numeric processor
6
Floppy disk
14
Primary IDE
7
PCI
15
Secondary IDE
PIRQ and PCI Device
The factory-set PCI device interrupts are assigned as follows.
Menu
Option
Interrupt
Recommended
PCI IRQ 1
LAN 1
IRQ 7
PCI IRQ 2
LAN 2
IRQ 7
PCI IRQ 3
-
Auto Select
PCI IRQ 4
USB ports 1 and 2
IRQ 5
PCI IRQ 5
PCI slot #1
RQ 11
PCI IRQ 6
-
Auto Select
PCI IRQ 7
-
Auto Select
PCI IRQ 8
USB port 3
IRQ 5
Summary of Contents for Express5800/110Ei
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Page 33: ...General Description 2 5 Rear View 1 2 3 2 4 5 6 7 8 9 10 11 12 ...
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Page 148: ...5 44 Installing the Operating System with Express Setup This page is intentionally left blank ...
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Page 272: ...A 2 Specifications This page is intentionally left blank ...
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