Asus ITX-220 User Manual download pdf (Page 33)

2-10 Chapter 2: BIOS information

Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values

can cause the system to malfunction.

Plug and Play O/S [No]

When set to [No], BIOS congures all the devices in the system. When set to [Yes] and if you

install a Plug and Play operating system, the operating system congures the Plug and Play

devices not required for boot. Conguration options: [No] [Yes]

PCI Latency Timer [64]

Allows you to select the value in units of PCI clocks for the PCI device latency timer register.

Conguration options: [32] [64] [96] [128] [160] [192] [224] [248]

Allocate IRQ to PCI VGA [Yes]

When set to [Yes], BIOS assigns an IRQ to PCI VGA card if the card requests for an IRQ.

When set to [No], BIOS does not assign an IRQ to the PCI VGA card even if requested.

Conguration options: [Yes] [No]

Palette Snooping [Disabled]

When set to [Enabled], the pallete snooping feature informs the PCI devices that an

ISA graphics device is installed in the system so that the latter can function correctly.

Conguration options: [Disabled] [Enabled]

Front Panel Support Type [HD Audio]

Allows you to select the front panel support type. If High Denition Audio Front Panel

used, please set HD Audio mode. Conguration options: [AC97] [HD Audio]

2.4.6 Onboard Devices Conguration

Onboard Gigabit LAN [Enabled]

Allows you to enable or disable the onboard LAN controller.

Conguration options: [Enabled] [Disabled]

LAN Option ROM [Disabled]

Allows you to enable or disable the boot ROM in the onboard LAN controller. This item

appears only when the Onboard LAN item is set to Enabled.

Conguration options: [Disabled] [Enabled]

Serial Port1 Address [3F8/IRQ4]

Allows you to select the Serial Port1 base address.

Conguration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]

2.4.7 PCI PnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.

The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA

devices, and setting the memory size block for legacy ISA devices.

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Asus ITX-220 User Manual Page 33