Philips Mini-ITX Mainboard EPIA-MII - Manual (Page 57)

Chapter 3
3-22
IRQs Activities
Press Enter to enter the sub-menu and the following screen appears:
Primary INTR
Selecting
On will cause the system to wake up from power saving modes
if activity is detected from any enabled IRQ channels. Settings: Off, On
IRQ3~IRQ15
Enables or disables the monitoring of the specified IRQ line. If set to
Enabled , the activity of the specified IRQ line will prevent the system
from entering power saving modes or awaken it from power saving
modes. These fields are only available if Primary INTR is on. Settings:
Enabled and Disabled
Note: IRQ (Interrupt Request) lines are system resources allocated to I/O devices.
When an I/O device needs to gain attention of the operating system, it signals this
by causing an IRQ to occur. After receiving the signal, when the operating system is
ready, the system will interrupt itself and perform the service required by the IO
device.