PT-6IFA
SYSTEM BOARD
AWARD BIOS SETUP
10
Legacy : The system BIOS will skip never assign this specified IRQ/DMA resource
ISA
to PCI or ISA PnP devices.
PCI/ISA: All items set to this value will make the specified IRQ/DMA have a chance
PnP
to be assigned to PCI or ISA PnP devices.
PCI IRQ Actived By :
This option tells the system board chipset the IRQ signals input is Level or Edge trigger.
PCI IDE IRQ Map To :
(for off-board PCI ICE cards)
PCI-AUTO : The BIOS will scan for PCI IDE devices and determine the location of
the
PCI IDE device, then assign IRQ 14 for primary IDE INT#, and assign
IRQ 15 for secondary IDE INT#.
PCI-SLOT1 : For the specified slot, the BIOS will assign IRQ 14 for primary IDE
INT#,
to and assign IRQ 15 for secondary IDE INT#.
PCI-SLOT4
ISA
: The BIOS will not assign any IRQs even if PCI IDE card is found.
Because some IDE cards connect the IRQ 14 and 15 directly from ISA
slot thru a card. (This card is called Legacy Header)
Used MEM base addr and
Used MEM Length
:
These fields are used for some specific ISA legacy cards with requested memory space
below 1M address. You can define where the used memory address is located and its
length of the legacy area corresponding. Base on these, BIOS will skip the UMB area
that is used by the legacy device to avoid the memory conflict.
Note : No matter the item "Resources Controlled By" is set to "Manual" or "Auto",
the
system BIOS assign IRQs to PCI devices from high to low. For ISA PnP
devices, the sequence is from low to high.
Explanation for proper nouns :
PnP device :
Device that has Plug & Play compatibility. That means it can request for DMA,
IRQ,
I/O and Memory from the PnP BIOS and all these requests can be relocatable.
In other words, these devices does not utilized any fixed resources.
