IRQ Assignment Map
Interrupt Channel | Function |
|
|
(ISA) 0 | System timer |
|
|
(ISA) 1 | Keyboard |
|
|
(ISA) 6 | Keyboard |
|
|
(ISA) 8 | Standard floppy disk controller |
|
|
(ISA) 9 | System CMOS/real time clock |
|
|
(ISA) 12 | Synaptics PS/2 Port Pointing Device |
|
|
(ISA) 13 | Numeric data processor |
|
|
(ISA) 14 | Primary IDE Channel |
|
|
(ISA) 15 | Secondary IDE Channel |
|
|
(PCI) 10 | Agere Systems AC’97 Modem |
|
|
(PCI) 10 | Crystal WDM AC’97 Driver for ICH4 |
|
|
(PCI) 10 | Intel (R) 82801DB/DBM SMBus |
|
|
(PCI) 10 | Intel (R) 82801DB/DBM USB 2.0 Enhanced Host |
|
|
(PCI) 10 | Texas Instruments |
|
|
(PCI) 10 | Texas Instruments |
|
|
(PCI) 11 | Intel (R) 82801DB/DBM USB Universal Host |
|
|
(PCI) 11 | Intel (R) 82801DB/DBM USB Universal Host |
|
|
(PCI) 11 | Intel (R) 82801DB/DBM USB Universal Host |
|
|
(PCI) 11 | Intel (R) 82852/82855 GM/GME Graphics Controller |
|
|
(PCI) 11 | Realtek RTL8139/810x Family Fast Ethernet NIC |
|
|
NOTE: IRQ settings may be changed by OS | |
DMA Channel Assignment |
|
|
|
DMA Channel | Function |
|
|
2 | Standard floppy disk controller |
|
|
3 | ECP Printer Port (LPT1) |
|
|
4 | Direct memory access controller |
|
|
Chapter 1 | 33 |
