Intel D875PBZ Product Guide - Page 91
Interrupts, Table 36.
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Interrupts Table 36. 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* 4 COM1* 5 LPT2 (Plug and Play option) / ** 6 Floppy drive controller 7 LPT1* 8 Real time clock 9 ** 10 ** 11 ** 12 Onboard mouse port (if present, else user available) 13 Reserved, math coprocessor 14 Primary IDE (if present, else user available) 15 Secondary IDE (if present, else user available) * Default, but can be changed to another IRQ. ** Dynamically allocated for all PCI/AGP devices and slots. Technical Reference 91
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Technical Reference
91
Interrupts
Table 36.
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*
4
COM1*
5
LPT2 (Plug and Play option) / **
6
Floppy drive controller
7
LPT1*
8
Real time clock
9
**
10
**
11
**
12
Onboard mouse port (if present, else user available)
13
Reserved, math coprocessor
14
Primary IDE (if present, else user available)
15
Secondary IDE (if present, else user available)
*
Default, but can be changed to another IRQ.
** Dynamically allocated for all PCI/AGP devices and slots.