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52
ET880 Series
User’s Manual
B.
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 3
Communications Port (COM2)
IRQ 4
Communications Port (COM1)
IRQ 10
Communications Port (COM3)
IRQ 11
Communications Port (COM4)
IRQ 16
High Definition Audio Controller
IRQ 55 ~ IRQ 204
Microsoft ACPI-Compliant System
IRQ 256 ~ IRQ 511
Microsoft ACPI-Compliant System
IRQ 4294967282
Intel(R) Management Engine
Interface #1
IRQ 4294967283~85
Intel(R) Ethernet Controller I226-IT
IRQ 4294967286~91
Intel(R) I210 Gigabit Network
Connection
IRQ 4294967292
Intel(R) USB 3.10 eXtensible Host
Controller - 1.20 (Microsoft)
IRQ 4294967293
Intel(R) UHD Graphics
IRQ 4294967294
Standard SATA AHCI Controller
Summary of Contents for ET880 Series
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