System interrupts 143
System interrupts
Table 11 shows the default system interrupt requests (IRQs) and their functions. You may use this information if you
install an adapter card that requires you to set IRQs.
Additional resources may be taken by Plug and Play (PnP) devices. Resources for installed PnP devices, such as the
modem card, can be reassigned by the BIOS or the Windows 95 Device Manager.
Table 11: System board interrupts
Interrupt request (IRQ) Function
SMI Power management
NMI Parity error or I/O channel check
0Timer
1 Keyboard
2 Cascade to IRQ8-IRQ15
3 Serial port A
4 Modem
5 Audio
6 Diskette
7 Parallel port
8 Real-time clock
9 Audio
10 Modem
11 User available
12 Mouse
13 Math coprocessor
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