Intel BONANZA S478 I875 ATX DDR BLKD875PBZLK ユーザーズマニュアル
製品コード
BLKD875PBZLK
Intel Desktop Board D875PBZ Technical Product Specification
54
2.6 Interrupts
The interrupts can be routed through either the Programmable Interrupt Controller (PIC) or the
Advanced Programmable Interrupt Controller (APIC) portion of the ICH5-R component. The PIC
is supported in Windows 98 SE and Windows ME, and uses the first 16 interrupts. The APIC is
supported in Windows 2000 and Windows XP, and supports a total of 24 interrupts.
Advanced Programmable Interrupt Controller (APIC) portion of the ICH5-R component. The PIC
is supported in Windows 98 SE and Windows ME, and uses the first 16 interrupts. The APIC is
supported in Windows 2000 and Windows XP, and supports a total of 24 interrupts.
Table 16. Interrupts
IRQ System
Resource
NMI
I/O channel check
0
Reserved, interval timer
1
Reserved, keyboard buffer full
2
Reserved, cascade interrupt from slave PIC
3 COM2
(Note 1)
4 COM1
(Note 1)
5
LPT2 (Plug and Play option)/User available
6 Diskette
drive
7 LPT1
(Note 1)
8 Real-time
clock
9
Reserved for ICH5-R system management bus
10 User
available
11 User
available
12
Onboard mouse port (if present, else user available)
13
Reserved, math coprocessor
14
Primary IDE/Serial ATA (if present, else user available)
15
Secondary IDE/Serial ATA (if present, else user available)
16
(Note 2)
USB UHCI controller 1 / USB UHCI controller 4 (through PIRQA)
17
(Note 2)
AC
‘97 audio/modem/User available (through PIRQB)
18
(Note 2)
ICH5-R USB controller 3 (through PIRQC)
19
(Note 2)
ICH5-R USB controller 2 (through PIRQD)
20
(Note 2)
ICH5-R LAN (through PIRQE)
21
(Note 2)
User available (through PIRQF)
22
(Note 2)
User available (through PIRQG)
23
(Note 2)
ICH5-R USB 2.0 EHCI controller/User available (through PIRQH)
Notes:
1. Default, but can be changed to another IRQ.
2. Available in APIC mode only.