
2.5.3Interrupt assignments
IRQ | Priority Standard function |
01 System Timer
12 Keyboard Controller
2
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 | — |
Chapter 2: Hardware information |