Appendix

Interrupts

Interrupt

Source Device

IRQ 0

System Timer

IRQ 1

Keyboard

IRQ 2

Cascade

IRQ 3

IrDA / 2F8h

IRQ 4

Serial Port 1 / 3F8h

IRQ 5

Audio

IRQ 6

Floppy Disk Controller (FDC)

IRQ 7

Parallel Port

IRQ 8

Real Time Clock (RTC)

IRQ 9

USB/System CardBus

IRQ 10

Reserved for PCMCIA card

IRQ 11

Reserved for PCMCIA card/MiniDock CardBus

IRQ 12

PS/2 Mouse

IRQ 13

Co-processor

IRQ 14

Hard disk

IRQ 15

CD-ROM

 

 

DMA Channels

Controller

Channel

Address

Function

1

0

0087

Audio(default)/IrDA(option)

1

1

0083

Audio(default)/ECP(option)

 

 

 

IrDA(option)

1

2

0081

Diskette

1

3

0082

Audio(option)/FIR IrDA(default)

 

 

 

/ECP(default)

2

4

Cascade

Cascade

2

5

008B

 

2

6

0089

Spare

2

7

008A

 

 

 

 

 

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Acer TravelMate 7300 manual Interrupts, DMA Channels, Interrupt Source Device, Controller Channel Address Function