Asus P5K/EPU manual Interrupt assignments, IRQ assignments for this motherboard

2.5.3Interrupt assignments

IRQ Priority Standard function

01 System Timer

12 Keyboard Controller

2—­ Re-direct to IRQ#9

39 IRQ holder for PCI steering*

412 Communications Port (COM1)*

513 IRQ holder for PCI steering*

614 Floppy Disk Controller

715 Printer Port (LPT1)*

83 System CMOS/Real Time Clock

94 IRQ holder for PCI steering*

105 IRQ holder for PCI steering*

116 IRQ holder for PCI steering*

127 PS/2 Compatible Mouse Port*

138 Numeric Data Processor

1410 Primary IDE Channel

1511 Secondary IDE Channel

*These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

	A	B	C	D	E	F	G	H
PCI slot 1	—	shared	—	—	—	—	—­	—
PCI slot 2		—	shared	—	—	—­	—	—­
LAN(8056)	—­	shared	—	—	—	—	—­	—­
PCIE x16 1	shared	—	—	—	—	—­	—­	—­
PCIE x16 2	shared	—	—	—	—	—­	—­	—­
PCIE x1 1	—	—	shared	—	—	—­	—­	—­
PCIE x1 2	—	—	—	shared	—	—	—	—
USB controller 1	—	—	—	—	—	—­	—­	used­
USB controller 2	—	—	—	shared	—	—­	—­	—­
USB controller 3	—	—	shared	—	—	—­	—­	—­
USB controller 4	shared	—	—	—	—	—­	—­	—­
USB controller 5	shared	— — — — —­					—­	—­
USB controller 6			shared
USB 2.0 controller 1	—	—	—	—	—	used­	—­	—­
USB 2.0 controller 2	—	—	shared	—	—	—­	—­	—­
SATA controller 1	—	—	shared	—	—	—­	—­	—
SATA controller 2	—	shared	—	—	—	—­	used­	—

2-20 Chapter 2: Hardware information