Microsoft P4X4-ALH 4Primary/Secondary, Master/Slave PIO, 4Primary/Secondary, Master/Slave Udma

Managing The PC BIOS

4Primary/Secondary, Master/Slave PIO

The four IDE PIO (Programmed Input/Output) fields let you set a PIO mode (0-4) for each of the four IDE devices that the onboard IDE interface sup- ports. Modes 0 through 4 provide successively increased performance. In Auto mode, the system automatically determines the best mode for each device.

4Primary/Secondary, Master/Slave UDMA

Ultra DMA/66 implementation is possible only if your IDE hard drive supports it and the operating environment includes a DMA driver (Windows 98 OSR2 or a third-party IDE bus master driver). If your hard drive and your system software both support Ultra DMA/66, select Auto to enable BIOS support.

VIA OnChip PCI Device

When you select this field the following menu will appear:

Phoenix - AwardBIOS CMOS Setup Utility

VIA OnChip PCI Device

VIA-3058	AC97 Audio	[Auto]	Item Help
VIA-3043	OnChip LAN	[Enabled]
			Menu Level 44
Onboard LAN Boot ROM		[Disabled]

4VIA-3058 AC97 Audio

If you want to enable the on-chip audio capabilities of your system you need use the default setting “Auto”. If you install an add on sound card you must disable this field.

4VIA-3043 OnChip LAN

This field allows you to decide whether you want this support or not. If you select “Enabled” the BIOS will automatically detect the LAN chip. If you se- lect “Disabled” the Bios will not detect any on-chip LAN function.

4Onboard LAN Boot ROM

This field can be used to enable or disable the Boot ROM of the onboard VIA 10/100 Adapter LAN Chip to support the boot up of a diskless client functionality unit.

SuperIO Device

When you press enter the following menu on page 36 is shown

4Onboard FDC Controller

Select Enabled if your system has a floppy disk controller (FDC) installed on the system board and you want to use it. If you install an add-in FDC or the system has no floppy drive, select Disabled in this field.

4Onboard Serial Port 1/2

These two selection fields allow you to select the I/O address and corre- sponding interrupts for the first and second serial port.

The P4X4-ALH Mainboard

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