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PCI IDE BusMaster
Set this option to Enabled to specify that the IDE controller on the PCI bus has bus
mastering capability. The settings are Disabled and Enabled. The Optimal default setting is
Enabled.
Offboard PCI IDE Card
This option specifies if an offboard PCI IDE controller adapter card is used in the computer.
You must also specify the PCI expansion slot on the motherboard where the offboard PCI
IDE controller card is installed. The settings are Auto, Slot1, Slot2, Slot3, Slot4, Slot5, and
Slot6. If Auto is selected, the BIOS automatically determines the correct setting. The
Optimal default setting is Auto.
PCI Slot# IRQ Priority
The Optimal default setting is Auto; the other settings are 3, 4, 5, 7, 9, 10, 11, 12, and 14.
DMA Channel (0/1/3/5/6/7)
These options allow you to specify the bus type used by each DMA channel. The settings are
PnP and ISA/EISA. The Optimal default setting is PnP.
IRQ (3/4/5/7/9/10/11/12/14/15)
These options specify the bus that the specified IRQ line is used on. These options allow you
to reserve IRQs for legacy ISA adapter cards. These options determine if the BIOS should
remove an IRQ from the pool of available IRQs passed to devices that are configurable by the
system BIOS. If more IRQs must be removed from the pool, the end user can use these
options to reserve the IRQ by assigning an ISA-EISA setting to it.
On-board I/O is configured by the BIOS. All IRQs used by on-board I/O are configured as
PCI-PnP. IRQ12 only appears if the PS/2 Mouse Support option in Advanced CMOS Setup
is set to Disabled. The settings are ISA/EISA and PCI/PnP. The Optimal default setting is
PCI/PnP.
Reserved Memory Size
This option specifies the size of the memory area reserved for legacy ISA adapter cards. The
settings are Disabled, 16K, 32K, and 64K. The Optimal default setting is Disabled.
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