A-6 IBM Personal Computer User GuideSystem interruptsThis table shows the system Interrupt Requests (IRQs) and their functions. You mayuse this information if you install an adapter card that requires you to set IRQs. AnIRQ function that has a device name in parenthesis might not be available on allmodels. In some cases, the device listed uses the IRQ.Table 4: System interruptsInterruptrequest (IRQ) Function0 Timer1 Keyboard2 Programmable Interrupt Controller3 Serial Port, Communications port (COM2)4 Sis 7001 PCI to USB open host controller5 Modem/Audio6 Diskette7 Parallel, Printer port8 Real Time Clock/System CMOS9 ACPI SCI10 Audio11 Ethernet, LAN12 PS/2 Mouse13 Numeric Data Processor14 Primary IDE15 Secondary IDE
