Download Tyan Computer Tyan S1857 Computer Hardware User Manual

BIOS 2
Award BIOS Configuration
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.
Primary
Secondary
The system wakes up fully when it detects IRQ activity.
The system does not wake up, but the interrupt request is
processed. Secondary interrupts are typically
housekeeping devices needed to maintain the system while
not requiring the use of the rest of the system resources.
For example, IRQ 8, the RTC Alarm, is configured as
Secondary by default. Another example might be a
network adapter continually polled by the network.
IRQn
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)
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