Interrupt List - Hitachi HF-W2000 35 User Manual

4. SPECIFICATIONS

4.4 Interrupt List

Interrupt port
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
IRQ16
IRQ17
IRQ18
IRQ19
IRQ20
IRQ21
IRQ22
IRQ23
Notes:
1. IRQ numbers for PCI slots assume use of INTA terminal.
2. Assignment of IRQ numbers to interrupt ports is fixed and cannot be altered.
3. Even under APIC-capable OS, APIC-enabled IRQ numbers are assigned only while
the corresponding device is active. In other cases, APIC-disabled IRQ numbers are
assigned instead.
Interrupt type when APIC is enabled
Cascade (from 8259 #1)
(reserved)
Timer
Serial port 2 (COM2)
Serial port 1 (COM1)
(not used)
(not used)
(not used)
Real-time clock
SCI
(not used)
(not used)
(reserved)
Coprocessor
(not used)
(not used)
LAN1, PCI-Express Slot 3
LAN2
PCI-Express Slot 2
(not used)
PCI Slot 1
SATA, SMBus
SATA
USB
Interrupt type when APIC is disabled
Timer
(reserved)
Cascade
Serial port 2 (COM2): B
Serial port 1 (COM1): A
(reserved)
(not used)
(not used)
Real-time clock
SATA, SCI, all PCI devices
(not used)
(not used)
(reserved)
Coprocessor
(not used)
(not used)
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