Specifications 6-9
6.10 System Interrupts
Table 6-11
System Interrupts
Hardware IRQ System Function
IRQ0 System timer
IRQ1 Keyboard controller
IRQ2 Cascaded
IRQ3 COM2
IRQ4 COM1
IRQ5 Audio (default)*
IRQ6 Diskette drive
IRQ7 Parallel port
IRQ8 Real Time Clock (RTC)
IRQ9 Infrared
IRQ10 System use
IRQ11 System use
IRQ12 Internal Point Stick or External Mouse
IRQ13 Coprocessor (Not available to any peripheral)
IRQ14 IDE Interface (Hard Disk and CD-ROM Drive)
IRQ15 Fixed Disk Drives on the Expansion Base or
Convenience Base
NOTE: PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15.
Either the infrared or the serial port may assert IRQ3 or IRQ4.
*
Default configuration; audio possible configurations are: IRQ5, IRQ7, IRQ9,
IRQ10 or none.
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