SE440BX-2 Motherboard Product Guide
59
Interrupts
Table 39.
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)/audio/user available
6
Diskette drive controller
7
LPT1*
8
Real time clock
9
Reserved
10
USB/User available
11
Windows Sound System*/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