IRQ Assignment Map

Interrupt Channel

Function (Hardware)

 

 

IRQ10

SMBus(PIRQB#)

 

AC’97 Audio(PIRQB#)

 

AC’97 MODEM(PIRQB#)

 

USB 1.1 UHCI (PIRQC#, PIRQD#)

 

LAN(PIRQD#)

 

CardBus(PIRQB#)

 

IEEE1394(PIRQC#)/PCI Candidate

 

 

IRQ11

VGA(PRIQA#)

 

FlashMemory(PIRQF#)

 

USB 1.1 UHCI (PIRQA#)

 

USB 2.0 EHCI(PIRQH#)/PCI Candidate

 

 

IRQ12

Touchpad (Auxiliary device)

 

 

IRQ13

Numeric data processor

 

 

IRQ14

1st EIDE device (hard disk)

 

 

IRQ15

2nd EIDE device (optical drive)

 

 

DMA Channel Assignment

DMA Channel

Function (Hardware)

 

 

DRQ0

Reserved

 

 

DRQ1

IrDA FIR

 

 

DRQ2

Floppy

 

 

DRQ3

Reserved

 

 

DRQ4

DMA controller

 

 

DRQ5

Reserved

 

 

DRQ6

Reserved

 

 

DRQ7

Reserved

 

 

26

Chapter 1

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Acer VD.T39V1.001 manual DMA Channel Assignment, DMA Channel Function Hardware