Tyan S1572 ATX ユーザーズマニュアル

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S1572-001-01 http://www.tyan.com
wResources Controlled By
  The Award Plug and Play BIOS can automatically configure all the boot
  and Plug and Play compatible devices. If you select Auto, all the
  interrupt request and DMA assignment fields disappear, as the BIOS
  automatically assigns them.
wIRQ n assigned to
  When resources are controlled manually, assign each system interrupt
  as one of the following types, depending on the type of device using
  the interrupt.
  Legacy ISA
  Devices compliant with the original PC AT bus specification.
  PCI/ISA PnP
  Devices compliant with the Plug and Play standard, whether designed
  for the PCI or ISA bus architecture.
  wPCI IRQ Activated By:
   Select the PCI IRQ Active scheme either LEVEL or EDGE.
   Default value is LEVEL.
 wPCI IDE IRQ Map To:
   Select the IDE IRQ Map to ISA IRQ#.
 wPrimary IDE INT#
   Select the PCI INT# that the Primary IDE controller will use.
   Default value is A.
  wSecondary IDE INT#
   Select the PCI INT# that the Secondary IDE controller will use.
   Default value is B