Interrupt Controllers - HP Vectra XE310 Technical Reference Manual

Channel
0
1
2
3
4
5
6
7

Interrupt Controllers

The Interrupt Requests (IRQ) are numbered sequentially, starting with the master controller, and
followed by the slave.
Windows 98 SE
IRQ
(Interrupt Interrupt Request Description
Vector)
INTR
IRQ0 System Timer
IRQ1 Keyboard Controller
IRQ4 Used by serial port if enabled
IRQ5 Free if not used for parallel port or audio
IRQ6 Floppy Disk Controller
IRQ7 LPT1
IRQ8 RTC
IRQ9 Available for PCI devices, if not used by USB
port
IRQ10 Available for PCI devices, if not used by USB
port
IRQ11 Available for PCI devices, if not used by USB
port
IRQ12 Mouse
IRQ13 Co-processor
IRQ14 IDE Primary channel
IRQ15 IDE Secondary channel. Free unless disabled
DMA controller
Function
Free
Free if not used for parallel port in Setup
Floppy disk controller
Free if not used for parallel port in Setup
Used to cascade DMA channels 0-3
Free
Free
Free
Windows 2000 and Windows XP
IRQ
(Interrupt
Vector)
INTR
ISA0
ISA1
ISA4
ISA6
ISA8
ISA9
ISA12
ISA13
ISA14
ISA15
PCI5
PCI17
PCI19
PCI20
PCI 23
BIOS Overview
Interrupt Request Description
System Timer
Standard 101/102-Key or Microsoft Natural
PS/2 keyboard
Communication Port (COM1)
Standard Floppy Disk Controller
System CMOS/real time clock
Microsoft ACPI-Compliant System
PS/2 Compatible Mouse
Numeric data processor
Primary IDE Channel
Secondary IDE Channel
Intel(R) 82801BA/BAM SMBus Controller -
2443
Intel(R) 82801BA/BAM AC'97 Audio
Controller - 2445
Intel(R) 82801BA/BAM USB Universal Host
Controller - 2442
Intel(R) PRO/100 VE Network Connection
Intel(R) 82801BA/BAM USB Universal Host
Controller - 2444
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