Ampro Corporation COM 830 manual PCI Configuration Space Map, IRQ14, IRQ15

Chapter 3				Signals and Pinout Tables
Table 3-28. IRQ Lines in APIC mode (Continued)
	9	Note 2	Generic	IRQ9 via SERIRQ, option for SCI
	10	Yes		IRQ10 via SERIRQ
	11	Yes		IRQ11 via SERIRQ
	12	Yes		IRQ12 via SERIRQ
	13	No	Math processor	Not applicable
	14	Note 1	IDE Controller 0 (IDE0) /	IRQ14
			Generic
	15	Note 1	IDE Controller 1 (IDE1) /	IRQ15
			Generic
	16	No		PIRQA, Integrated VGA Controller, PCI
				Express Root Port 1, Intel High
				Definition Audio Controller (Azalia),
				UHCI Host Controller 3
	17	No		PIRQB, AC'97 Audio, PCI Express Root
				Port 2, PCI Express Root Port 6, onboard
				Gigabit LAN Controller
	18	No		PIRQC, Parallel ATA Controller in
				enhanced/native mode, UHCI Host
				Controller 2, PCI Express Root Port 3
	19	No		PIRQD, Serial ATA controller in
				enhanced/native mode, UHCI Host
				Controller 1, SMBus Controller, PCI
				Express Root Port 4
	20	Yes		PIRQE, PCI Bus INTD, option for SCI
	21	Yes		PIRQF, PCI Bus INTA
	22	Yes		PIRQG, PCI Bus INTB
	23	Yes		PIRQH, PCI Bus INTC, UHCI Host
				Controller 0, EHCI Host Controller

In APIC mode, the PCI bus interrupt lines are connected with IRQ 20, 21, 22 and 23.

NOTE If the ATA/IDE configuration is set to enhanced mode in BIOS setup (serial ATA and parallel ATA native mode operation), IRQ14 and 15 are free for PCI/LPC bus.

In ACPI mode, IRQ9 is used for the SCI (System Control Interrupt). The SCI can be shared with a PCI interrupt line.

PCI Configuration Space Map

Table 3-29. PCI Configuration Space Map

Bus Number	Device Number	Function Number	PCI Interrupt	Description
(hex)	(hex)	(hex)	Routing
00h	00h	00h	N.A.	Host Bridge
00h	01h	00h	Internal	PCI Express Graphics
				Root Port
00h	02h	00h	Internal	VGA Graphics

COM 830 Reference Manual 49