Chapter 1
31
NOTE:
N - Not be used.
NOTE:
N - Not to be used.
IRQx Assignment Map
IRQx
System Devices
Add-On-Card Devices
IRQ0 Timer
N
(Notes)
IRQ1
Keyboard
N
IRQ2
Cascade Interrupt Control
N
IRQ3
Serial Alternate
Reserved
IRQ4
Serial Primary
Reserved
IRQ5
Parallel Port (Alternate)
Reserved
IRQ6
Floppy Diskette
Reserved
IRQ7
Parallel Port
Reserved
IRQ8
Real Time Clock
N
IRQ9
N
Reserved
IRQ10
N
Reserved
IRQ11
N
Reserved
IRQ12
PS/2 Mouse
Reserved
IRQ13
Math Co-processor Exception
N
IRQ14
Fix Diskette
Reserved
IRQ15
Fix Diskette
Reserved
DRQx Assignment Map
DRQx
System Devices
Add-On-Card Devices
DRQ0
N (Notes)
Reserved
DRQ1
N
Reserved
DRQ2
Floppy Diskette
N
DRQ3
N
Reserved
DRQ4
Cascade
N
DRQ5
N
Reserved
DRQ6
N
Reserved
DRQ7
N
Reserved
Main Board Major Chips
Item
Controller
North Bridge
Intel BROOKDALE-G/GL
South Bridge
Intel 82801DB ICH 4
Super I/O controller
SMSC LPC47M192-NC
Audio Codec
STAC9750 Sigmatel
LAN controller
Intel 82562ET
HDD controller
Built-in Intel 82801DB ICH 4
Keyboard controller
Built-in Intel 82801DB ICH 4
RTC
Built-in Intel 82801DB ICH 4
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