Abit AX5, Instruction Booklet

Page: 68 / 119

3-26 Chapter 3
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PCI-slotX: Some old PCI IDE cards cannot be detected by the BIOS. If
the onboard BIOS cannot detect a PCE IDE card, you have to specify
on which PCI slot the IDE card is inserted, to make the BIOS assign
IRQ14 for use by the interrupt number (INT#) of this PCI slot.
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ISA: If you select ISA, it means that your PCI IDE card features a
“
paddleboard
”
and a cable that can be connected to IRQ on the ISA slot,
because the BIOS will not assign any IRQ to this PCI slot.
Attention: Primary Channel and Secondary Channel : The BIOS needs two
independent interrupt number (INT#) lines to be allocated to the
PCI IDE card. Be careful not to choose twice the same interrupt
number (INT#).
Note: The interrupt signals of PCI slots were design in the following
connect rules, if the drivers or BIOS which bundle by the PCI
cards that you using (specially for some old model of PCI cards)
limitations to avoid some confict with other IRQ signals you
should watch out this kind of situation.
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The INT#A signal of the first PCI slot, the INT#B signal of the
second PCI slot, the INT#C signal of the third PCI slot and the
INT#D signal of the fourth PCI slot, are the same, so be
careful not to use them simultaneously.
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The INT#B signal of the first PCI slot, the INT#C signal of the
second PCI slot, the INT#D signal of the third PCI slot and the
INT#A signal of the fourth PCI slot, are the same, so be
careful not to use them simultaneously.
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The INT#C signal of the first PCI slot, the INT#D signal of the
second PCI slot, the INT#A signal of the third PCI slot and the
INT#B signal of the fourth PCI slot, are the same, so be
careful not to use them simultaneously.
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The INT#D signal of the first PCI slot, the INT#A signal of the
second PCI slot, the INT#B signal of the third PCI slot and the
INT#C signal of the fourth PCI slot, are the same, so be
careful not to use them simultaneously.
On Board FDD Controller:
This is to Enable or Disable the Onboard FDD Controller.