MSI 648F Neo Manual page 66

Primary Graphics Adaptor
This setting specifies which VGA card is your primary graphics adapter. Setting
options are:
AGP
PCI
PCI Slot 1/5 IRQ, PCI Slot 2/6 IRQ, PCI Slot 3 IRQ, PCI Slot 4 IRQ
This item specifies the IRQ line for each PCI slot. Settings: 3, 4, 5, 7, 9, 10, 11
and Auto. Selecting Auto allows BIOS to automatically determine the IRQ line
for each PCI slot.
Set DMAs to PnP or ISA
Press <Enter> to enter the sub-menu and the following screen appears:
DMA Channel 0/1/3/5/6/7
These items specify the bus that the system DMA (Direct Memory
Access) channel is using.
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.
The system initializes the installed AGP card first. If the
AGP card is not available, it will initialize the PCI VGA
card.
The system initializes the installed PCI VGA card first.
If the PCI VGA card is not available, it will initialize the
AGP card.
BIOS Setup
3-19