Interrupt Request (Irq) Lines; Pic Mode - ADLINK Technology COM Express Express-BL User Manual

Hex Range
4D0,4D1
CF8-CFB
CF9
CFC-CFF
F040
1C00
1800
1860
0A00~0AFF
6.4.

Interrupt Request (IRQ) Lines

6.4.1.

PIC Mode

IRQ# Typical Intterupt Resource
0 Counter 0
1 Keyboard controller
2 Cascade interrupt from slave PIC
3 Serial Port 2 (COM2)
4 Serial Port 1 (COM1)
5 Generic
6 Generic
7 Generic
8 Real-time clock
9 Generic
10 Serial Port 3 (COM3)
11 Serial Port 4 (COM4)
12 PS/2 Mouse
13 FERR# logic
14 SATA Primary
15 SATA Secondary
Note (1): These IRQs can be used for PCI devices when onboard device is disabled.
Device
Interrupt controller
PCI configuration address register (32 bit I/O only)
Reset Control register (8 bit I/O)
PCI configuration data register
Smbus base address for SB.
GPIO Base Address for SB
PM (ACPI) Base Address for SB
Alias for ICH TCO base address.
Reserved for SIO functions base address (ex: PME /GPIO etc)
Connected to Pin
N/A
IRQ1 via SERIRQ
N/A
IRQ3 via SERIRQ / PIRQ
IRQ4 via SERIRQ / PIRQ
IRQ5 via SERIRQ / PIRQ
IRQ6 via SERIRQ / PIRQ
IRQ7 via SERIRQ / PIRQ
N/A
N/A
IRQ10 via SERIRQ / PIRQ
IRQ11 via SERIRQ / PIRQ
IRQ12 via SERIRQ / PIRQ
N/A
IRQ14 via SERIRQ / PIRQ
IRQ15 via SERIRQ / PIRQ
Express-BL
Available
No
No
No
Note (1)
Note (1)
Note (1)
No
Note (1)
No
Note (1)
Note (1)
Note (1)
Note (1)
No
Note (1)
Note (1)
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