User Guide

2-16
Chapter 2: Hardware Information
*TheseIRQsareusuallyavailableforISAorPCIdevices.
IRQ Priority Standard function
0 1 SystemTimer
1 2 KeyboardController
2 - ProgrammableInterrupt
3* - --
4* 9 CommunicationsPort(COM1)
5* 10 PrintPort(LPT1)
6 - --
7* - --
8 3 SystemCMOS/RealTimeClock
9* 4 ACPIModewhenused
10* 5 IRQHolderforPCISteering
11* 6 IRQHolderforPCISteering
12* 7 PS/2CompatibleMousePort
13 8 Numeric Data Processor
14* - --
15* - --
2.5.3 Interrupt assignments
Standard Interrupt assignments