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Chapter 3
provide successively increased performance. In Auto mode, the system automatically
determines the best mode for each device.
3. IDE Primary/Secondary Master/Slave UDMA
Ultra DMA implementation is possible only if your IDE device supports it and your
operating environment contains a DMA driver. If both your hard drive and software
support Ultra DMA, select [Auto] to enable BIOS support.
4. IDE HDD Block Mode
Block mode is also called block transfer, multiple commands, or multiple sector
read/write. If your IDE hard drive supports block mode, select Enabled to auto-detect
the optimal number of block read/writes per sector the drive can support.
OnChip PCI Device
This section provides information for setting onboard device. By choosing the Integrated
Peripherals option from the CMOS Setup Utility menu (Figure 3-5), the screen below is
displayed. This sample screen contains the manufacturer's default values for the
motherboard
Press [Enter] to enter the sub-menu, which contains the following items for advanced
control:
1. AC97 Audio
This feature allows you to enable/disable the on-board AC97 audio function.
2. AC97 Modem
This item allows you to enable/disable the MCP chipset's feature to support MC97
Modem.
Super IO Device
This section provides information on setting Super I/O device. By choosing the
Integrated Peripherals option from the CMOS Setup Utility menu (Figure 3-5), the screen
below is displayed. This sample screen contains the manufacturer's default values for the
motherboard.
Press [Enter] to enter the sub-menu, which contains the following items for advanced
control:
1. Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC) installed on the system
board and you wish to use it. If you install an add-in FDC or the system has no floppy
drive, select Disabled in this field.
2. Onboard Serial Port 1/2
Select an address and corresponding interrupt for the first and second serial ports.
Available options are [3F8/IRQ4], [2E8/IRQ3], [3E8/IRQ4], [2F8/IRQ3], [Disabled],
and [Auto].
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