SOYO SY-P4I845PE user manual 1 PNP/PCI Configuration Controls

BIOS Setup Utility			SY-P4I845PE
3-7.1 PNP/PCI Configuration Controls
PNP/PCI	Setting	Description	Note
Controls
Reset
	Disabled	Retain PnP configuration	Default
Configuration		data in BIOS.
Data	Enabled	Reset PnP configuration data
Resources		in BIOS.
	Manual	BIOS does not manage PCI/ISA PnP
Controlled By		card IRQ assignment.
	Requires to assign IRQ-# and DMA-# to PCI or
	ISA PnP manually.
	IRQ-3,4,5,7,9,10,11,12,14,15 assigned to: _
	DMA-0,1,3,5,6,7 assigned to: _
	Auto	The Plug-and-Play BIOS	Default
	(ESCD)	auto manages PCI/ISA PnP
		card IRQ assignment
		automatically.

If [Resources Controlled By] is set to [Manual]

IRQ-# assigned to:

PCI device	Choose IRQ# assigned	Default
	to PCI/ISA PnP card.
Reserved	Reserved IRQ

Under this item the user can assign an IRQ to a PCI slot. However, there under some conditions the IRQ will not be assigned as selected under this item:

1.IRQs 0, 1, 2, 6, 8, 13 can NOT be assigned, because they are fixed.

2.IRQs 5, 9, 10, 11 are available

3.IRQs 3,4,7,12,14 and 15 will only be assigned if they are free. See the table below on how to free them:

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