Acer 230 User Manual
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NOTE: IRQ settings may be changed by OS
IRQ Assignment Map
Interrupt Channel
Function
NMI
System errors
IRQ0
System timer
IRQ1
Keyboard
IRQ6
Floppy
IRQ8
Real time clock
IRQ9
Microsoft ACPI-Compliant System
IRQ11
Intel (R) 82801DB/DBM SMBus Controller-24C2
IRQ12
Synaptics PS2 pointing device
IRQ13
Numeric data processor
IRQ14
1st IDE device
IRQ15
2nd IDE device
IRQ16
Intel (R) 82801DB/DBM USB Universal Host Controller-24C2
IRQ16
Intel (R) 845G Graphics Controller
IRQ17
Agere Systems AC’97 Modem
IRQ17
Crystal WDM AC’97 Driver for ICH4
IRQ17
O2Micro OZ6912 CardBus Controller
IRQ18
Intel (R) 82801DB/DBM USB Universal Host Controller-24C7
IRQ19
Intel (R) 82801DB/DBM USB Universal Host Controller-24C4
IRQ19
Realtek RTL8139/810x Family Fast Ethernet NIC
IRQ21
OHCI Compliant IEEE 1394 Host Controller
IRQ23
Intel (R) 82801DB/DBM USB 2.0 Enhanced Host Controller-24CD
DMA Channel Assignment
DMA Channel
Function
DRQ0
Not used
DRQ1
Not used
DRQ2
Floppy
DRQ3
Not used
DRQ4
DMA controller
DRQ5
Not used
DRQ6
Not used
DRQ7
Not used