Acer 230, 280 manual IRQ Assignment Map, DMA Channel Assignment, Interrupt Channel Function

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
NOTE: IRQ settings may be changed by OS
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

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