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Chapter 3
BIOS Configuration
Primary INTR
A system peripheral signals that it wants to gain the attention of the operating
system by sending an interrupt request. When the system is in Suspend mode,
IRQ activity can cause a Primary or Secondary wake-up. When Primary INTR is
On, the IRQs in the above fields can be configured as Primary, Secondary, or
Disabled.
IRQ
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The following is a list of IRQs (Interrupt Request Lines) assigned to common
system peripherals.
IRQ3 (COM2)
IRQ10 (Reserved)
IRQ4 (COM1)
IRQ11 (Reserved)
IRQ5 (LPT2)
IRQ12 (PS/2 Mouse)
IRQ6 (Floppy Disk)
IRQ13 (Coprocessor)
IRQ7 (LPT1)
IRQ14 (Hard Disk)
IRQ8 (RTC Alarm)
IRQ15 (Reserved)
IRQ9 (IRQ2 Redir)