Desktop Board Resources; Interrupts - Intel D815EEA2 - Desktop Board Motherboard Product Manual

Intel Desktop Boards D815EEA2, D815EPEA2, D815EFV, and D815EPFV Product Guide

Desktop Board Resources

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
3 COM2* (user available if COM2 is not present)
4 COM1*
5 LPT2 (Plug and Play option)/audio/user available
6 Diskette drive controller
7 LPT1*
8 Real time clock
9 User available
10 User available
11 User available
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.
86