MSI MS-6580-060 User Guide - Page 72

IRQ 3/4/5/7/9/10/11/14/15, Set DMAs to PnP or ISA, DMA Channel 0/1/3/5/6/7

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Page 72 highlights

MS-6580 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/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. Available settings: ISA/EISA, PCI/ PnP. Set DMAs to PnP or ISA Press 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. 3-22

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MS-6580 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/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.
Available settings:
ISA/EISA
,
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.