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C. Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level
Function
IRQ 0
System timer
IRQ 1
Standard PS/2 Keyboard
IRQ 3
Communications Port (COM2)
IRQ 4
Communications Port (COM1)
IRQ 5
Communications Port (COM3)
IRQ 7
Communications Port (COM4)
IRQ 8
System CMOS/real time clock
IRQ 10
Communications Port (COM5)
IRQ 11
Communications Port (COM6)
IRQ 11
Intel(R) Xeon(R) E3 - 1200/1500 v5/6th Gen Intel(R)
Core(TM) Gaussian Mixture Model - 1911
IRQ 11
Intel(R) 100 Series/C230 Series Chipset Family SMBus
- A123
IRQ 11
Intel(R) 100 Series/C230 Series Chipset Family Thermal
subsystem - A131
IRQ 12
Microsoft PS/2 Mouse
IRQ 13
Numeric data processor
IRQ 14
Motherboard resources
IRQ 16
High Definition Audio Controller
IRQ 19
Intel(R) Active Management Technology - SOL (COM7)
IRQ 54 ~ IRQ 204
Microsoft ACPI-Compliant System
IRQ 256 ~ IRQ 511
Microsoft ACPI-Compliant System
IRQ 4294967278
Intel(R) Management Engine Interface
IRQ 4294967279 ~
IRQ 4294967284
Intel(R) I211 Gigabit Network Connection
IRQ 4294967285 ~
IRQ 4294967290
Intel(R) I211 Gigabit Network Connection #2
IRQ 4294967291
Intel(R) USB 3.0 eXtensible Host Controller - 1.0
(Microsoft)
IRQ 4294967292
Intel(R) HD Graphics 630
IRQ 4294967293
Intel(R) Ethernet Connection (2) I219-LM
IRQ 4294967294
Standard SATA AHCI Controller
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