PCI Slot n IRQ Priority

Chapter 3

BIOS Configuration

OffBoard PCI IDE Primary IRQ

This option specifies the PCI interrupt used by the primary IDE channel on the offboard PCI IDE controller. The settings are Disabled, Hardwired, INTA, INTB, INTC, or INTD.

Offboard PCI IDE Secondary IRQ

This option specifies the PCI interrupt used by the secondary IDE channel on the offboard PCI IDE controller. The settings are Disabled, Hardwired, INTA, INTB, INTC, or INTD.

These options specify the IRQ priority for PCI devices installed in the PCI devices installed in the PCI expansion slots. The settings are Auto, IRQ 3, 4, 5, 7, 9, 10, and 11, in priority order.

DMA Channel n

These options allow you to specify the bus type used by each DMA channel. The settings are PnP or ISA/EISA .

IRQn

These options specify the bus that the specified IRQ line is used on. These options allow you to reserve IRQs for legacy ISA adapter cards. These options 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 pool, you can use these options 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. IRQ12 only applies if the Mouse Support option in Advanced Setup is set to Disabled. IRQ14 and 15 will not be available if the onboard PCI IDE is enabled. If all IRQs are set to ISA/EISA and IRQ14 and 15 are allocated to the onboard PCI IDE, IRQ9 will still be available for PCI and PnP devices, because at least one IRQ must be available for PCI and PnP devices. The settings are ISA/EISA or PCI/PnP.

Reserved Memory Size

This option specifies the size of the memory area reserved for legacy ISA adapter cards. The settings are Disabled, 16K, 32K, or 64K.

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Tyan S1857, Trinity 371 Motherboard specifications

The Tyan Computer Trinity 371 motherboard, also known as the Tyan S1857, is a versatile and reliable choice for various computing needs. Designed primarily for the industrial and server markets, this motherboard is known for its robust build quality and extensive feature set that supports a wide range of applications.

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Additionally, the Tyan Trinity 371 offers integrated VIA Apollo KT133A chipsets, which provide reliable performance and optimized speed for both desktop and server environments. The motherboard supports a 100MHz Front Side Bus (FSB), ensuring high data transfer rates and improved overall system performance. The inclusion of five PCI slots permits the addition of various expansion cards, such as graphics cards, network cards, and additional storage controllers, enhancing the system’s versatility.

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In summary, the Tyan Computer Trinity 371 motherboard, or Tyan S1857, stands out for its comprehensive feature set, robust support for AMD processors, and reliable performance in various applications. Its ability to support expansion through additional slots, RAID configurations, and versatile connectivity options makes it an excellent choice for both industrial and server environments.