Abit BP6 User Manual download pdf (Page 59)

BIOS Setup 3-29

User’s Manual

Legacy ISA

devices compliant with the original PC AT bus specification, requiring a specific

interrupt (such as IRQ4 for serial port 1).

PCI/ISA

PnP

devices compliant with the Plug and Play standard, whether designed for the

PCI or ISA bus architecture.

Two options are available: Auto or Manual. The Award Plug and Play BIOS has the

capability to automatically configure all of the boot and Plug and Play compatible devices. If

you select Auto, all the interrupt request (IRQ) and DMA assignment fields disappear, as the

BIOS automatically assigns them. But if you have trouble in assigning the interrupt resource

automatically, you can select Manual to set which IRQ and DMA are assigned to PCI/ISA

PnP or legacy ISA cards.

Assign IRQ For VGA :

You can assign an IRQ for the PCI VGA or

Disabled

Assigned IRQ For USB:

If you need another IRQ to be freed up, you can choose to disable this item, and you can get

an IRQ. But in some situations in Windows

95 it may cause the USB port to malfunction or

have other problems! Two options are available: Enable or Disable.

PIRQ_0 Use IRQ No. ~ PIRQ_3 Use IRQ No:

This item allows you to specify the IRQ number for the device installed on PCI slots. Which

means, you can specific the fixed IRQ number for the device installed on the PCI slots (PCI

slot 1 to PCI slot 5, including the AGP slot). This is a useful function when you want to fix

the IRQ for a specific device.

For example, if you want to remove your hard disk to another computer and don’t want to

re-install the Windows

NT 4.0 (and lower versions), then you can specific the IRQ for

device install on the new computer to fit original computer settings.

Note

If you specify the IRQ in this item, then you cannot specify the same IRQ to the ISA

bus, otherwise, it will cause a hardware conflict.

You must be familiar with the PCI interrupt distribution mechanism to adjust this setting.

This feature is for the operating system which will record and fix the PCI configuration

status, if you want to change it.

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Abit BP6 User Manual Page 59