C-2 IRQ and I/O Port Addresses
Interrupt Requests
The factory-set interrupt requests (IRQs) are listed below.
IRQ
Peripheral Device (Controller)
IRQ
Peripheral Device (Controller)
0
System timer
12
Mouse
1
Keyboard
13
Numeric processor
2
–
14
Primary IDE
3
COM2 serial port (PCI)
15
Secondary IDE
4
COM1 serial port (PCI)
16
USB
5
PCI
17
VGA
6
Floppy disk drive
18
–
7
PCI
19
USB
8
Real-time clock
30
LAN1
9
ACPI compliant system
31
LAN2
10
PCI
49
Adaptec SCSI
11
PCI
50
Adaptec SCSI
PIRQ and PCI Device
The factory-set PCI device interrupts are assigned as follows. Use the BIOS setup
utility, BIOS, for interrupt setup.
Menu Option
Interrupt
PCI IRQ 1
On-board SCSI (Channel 0), PCI slot #6 (INT D)
PCI IRQ 2
On-board SCSI (Channel 1), PCI slot #6 (INT C)
PCI IRQ 3
On-board LAN #1
PCI IRQ 4
On-board LAN #2
PCI IRQ 5
On-board GA
PCI IRQ 6
PCI slot #3 (INT A)
PCI IRQ 7
PCI slot #4 (INT A)
PCI IRQ 8
PCI slot #6 (INT A)
PCI IRQ 9
PCI slot #2 (INT A)
PCI IRQ 10
PCI slot #5 (INT A)
PCI IRQ 11
PCI slot #1 (INT A)
PCI IRQ 12
PCI slot #1 (INT D), PCI slot #2 (INT B), PCI slot #3 (INT B),
PCI slot #4 (INT C), PCI slot #5 (INT C)
PCI IRQ 13
PCI slot #1 (INT B), PCI slot #2 (INT C), PCI slot #3 (INT C),
PCI slot #4 (INT D), PCI slot #5 (INT D), PCI slot #6 (INT B)
PCI IRQ 14
PCI slot #1 (INT C), PCI slot #2 (INT D), PCI slot #3 (INT D),
PCI slot #4 (INT B), PCI slot #5 (INT B)
Summary of Contents for Express 5800/120Lg
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Page 169: ...A Specifications System Specifications ...
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