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S1571 D1181-001 http://www.tyan.com
BIOS Configuration
s
IRQ n assigned to
When resources are controlled manually, assign each system interrupt
as one of the following types:
Legacy ISA
Choose this option for devices compliant with the original PC
AT bus specification.
PCI/ISA PnP
Choose this option for devices compliant with the Plug and Play
standard, whether designed for the PCI or ISA bus architecture.
s
DMA n Assigned to
When resources are controlled manually, assign each system DMA
channel as one of the following types:
Legacy ISA
Choose this option for devices compliant with the original PC
AT bus specification, requiring a specific interrupt.
PCI/ISA PnP
Choose this option for devices compliant with the Plug and Play
standard, whether designed for the PCI or ISA bus architecture.
s
PCI IRQ Activated By
Unless the PCI device assigned to the interrupt specifies “Edge”-
triggered interrupts, leave the IRQ trigger set at Level.
s
PCI IDE IRQ Map To
This field lets you select PCI IDE IRQ mapping or PC AT (ISA)
interrupts. If your system does not have one or two PCI IDE connectors
on the system board, select values according to the type of IDE
interfaces installed in your system (ISA or PCI). Standard ISA
interrupts for IDE channels are IRQ14 for primary and IRQ15 for
secondary.
