User Guide

Introduction of BIOS 3-25
PCI PnP BIOS Auto-Config:
This option enables or disables the BIOS capability to automatically
assign IRQs. The BIOS default is Disable.
When you select Enable, the BIOS will automatically assign the
correct IRQ to the interrupt number (INT#) of the PCI slots. When
this option is disabled, you have to assign IRQs used by the interrupt
number (INT#) of the PCI slots.
Xth Available IRQ:
You can select four IRQs out of the 10 listed (IRQ3, 4, 5, 7, 9, 10, 11,
12, 14, 15) to be assigned for use by the interrupt number (INT#) of
the PCI slot.
1st Available IRQ:
This means that the first interrupt number (INT#) found on the PCI
bus will use this IRQ. That is, this IRQ will be assigned to the first
interrupt number (INT#) found on the PCI bus.
2nd Available IRQ:
This means that the second interrupt number (INT#) found on the
PCI bus will use this IRQ. That is, this IRQ will be assigned to the
second interrupt number (INT#) found on the PCI bus.
The third and the fourth available IRQ will be assigned in
sequence to the third and the fourth interrupt numbers (INT#)
found on the PCI bus.
PCI IDE Card 2nd Channel:
This option can be enabled or disabled. BIOS default is Enable.
Since this channel uses IRQ15, if you want to use this channel, you
have to enable this option to make the BIOS assign IRQ15 to this
channel.
PCI IDE Card IRQ Map to:
Three options are available for this item: PCI Auto, PCI-slotX and
ISA.
ä PCI-Auto: The onboard BIOS auto-detects which PCI slot has an
IDE card inserted in.