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AMI
®
BIOS Setup
4-19
registers of both VGA devices to be identical. The setting must be set to
Enabled if any non-standard VGA adapter card, such as MPEG card,
installed in the system requires VGA palette snooping.
DMA Channel 0/1/3/5/6/7
These items specify the bus that the system DMA (Direct Memory Access)
channel is used. The settings determine if AMIBIOS should remove a DMA
from the available DMAs passed to devices that are configurable by the
system BIOS. The available DMA pool is determined by reading the ESCD
NVRAM. If more DMAs must be removed from the pool, the end user can
reserve the DMA by assigning an ISA/EISA setting to it.
IRQ 3/4/5/7/9/10/11
These items specify the bus where the specified IRQ line is used. The
settings determine if AMIBIOS should remove an IRQ from the pool of
available IRQs passed to devices that are configurable by the system BIOS.
The available IRQ pool is determined by reading the ESCD NVRAM. If more
IRQs must be removed from the IRQ pool, the end user can use these
settings to reserve the IRQ by assigning an ISA/EISA setting to it. Onboard
I/O is configured by AMIBIOS. All IRQs used by onboard I/O are
configured as PCI/PnP. If all IRQs are set to ISA/EISA, and IRQ 14/15 are
allocated to the onboard PCI IDE, IRQ 9 will still be available for PCI and PnP
devices. Settings: ISA/EISA and PCI/PnP.