Acer AcerPower SN Service Manual page 18

IRQ Assignment Map
IRQx
IRQ0 Timer
IRQ1 Keyboard
IRQ2 Cascade Interrupt Control
IRQ3 Serial Alternate
IRQ4 Serial Primary
IRQ5 Parallel port (Alternate)
IRQ6 Floppy Diskette
IRQ7 Parallel Port
IRQ8 Real Time Clock
IRQ9 Not be used
IRQ10 Not be used
IRQ11 Not be used
IRQ12 PS/2 Mouse
IRQ13 Math Coprocessor Exception
IRQ14 Hard disk drive
IRQ15 Hard disk drive
DRQ Assignment Map
DRQx
DRQ0
DRQ1
DRQ2
DRQ3
DRQ4
DRQ5
DRQ6
DRQ7
System Board Major Chips
Item
System core logic
Super I/O controller
Audio controller
Hard disk drive
controller
Keyboard controller
RTC
10
System Devices
System Devices
Not be used
Not be used
Floppy Diskette
Not be used
Cascade
Not be used
Not be used
Not be used
ALI M1621/ ALI M1543C
Built-in in ALI M1543C
Crystal CS4280
Built-in ALI M1543C
Built-in ALI M1543C
ALI M5819
Add-On-Card Devices
Not be used
Not be used
Not be used
Reserved
Reserved
Reserved
Reserved
Reserved
Not be used
Reserved
Reserved
Reserved
Reserved
Not be used
Reserved
Reserved
Add-On-Card Devices
Reserved
Reserved
Not be used
Reserved
Not be used
Reserved
Reserved
Reserved
Controller
Chapter 1