MSI 655 Max User Manual page 73

MS-6730 ATX Mainboard
IRQ 3/4/5/7/9/10/11/14/15
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/
EISAsetting 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. Available settings: ISA/
EISA and PCI/PnP.
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 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.
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