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Interrupts
Table 32. 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
3COM2*
4COM1*
5 LPT2 (Plug and Play option) / **
6 Diskette drive controller
7LPT1*
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.