Interrupt Controllers - HP x4000 Technical Reference Manual

Table 4-6 IRQ Routing Table
Device
82550 LAN
53C1010R
53C1010R
Zircon

Interrupt Controllers

The system's interrupt controller is equivalent in function to two 82C59
interrupt controllers. The following table shows how the interrupts are
connected to the APIC controller. The IRQs are numbered sequentially,
starting with the master controller and followed by the slave (both of
82C59 type).
I/O APIC Input
INTIN0
INTIN1
INTIN2
INTIN3
INTIN4
INTIN5
INTIN6
INTIN7
INTIN8
INTIN9
INTIN10
INTIN11
INTIN12
INTIN13
INTIN14
Chapter 4
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Interrupt
A
A
B
(All)
IRQ IRQ Description
ICH
IRQ1 Super I/O keyboard controller
IRQ0 ICH system timer
IRQ3 Super I/O - Used by serial port if enabled
IRQ4 Super I/O - Used by serial port if enabled
IRQ5 Free if not used for parallel port or audio
IRQ6 Super I/O - floppy disk controller
IRQ7 Super I/O - LPT1
IRQ8 ICH - RTC
IRQ9 Available for PCI devices
IRQ10 Available for PCI devices
IRQ11 Available for PCI devices
IRQ12 Super I/O - mouse
IRQ13 Coprocessor
IRQ14 ICH - Integrated IDE Controller
(primary)
System BIOS and Resources
System Resources
ICH2 IRQ P64H IRQ
F
H
D
H
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