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Chapter 3
Primary/Secondary Master/Slave PIO
The four fields allow you to set a PIO (Programmed Input/Output) mode for
each of the four IDE devices that the onboard IDE interface supports.
Modes 0~4 provide increased performance. In Auto mode, BIOS automati-
cally determines the best mode for each IDE device.
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.
Init Display First
This item specifies which VGA card is your primary graphics adapter.
Available options are PCI Slot and AGP.
onboard Lan Device (Optional)
The field is available only when LAN is integrated on the board. This is
used to enable or disable the onboard LAN controller. Settings are Enabled
and Disabled.
IDE HDD Block Mode
This allows your hard disk controller to use the fast block mode to transfer
data to and from the hard disk drive. Block mode is also called block
transfer, multiple commands or multiple sector read/write. Enabled enables
IDE controller to use block mode; Disabled allows the controller to use
standard mode.
Onboard FDD Controller
This is to enable or disable the onboard Floppy controller. Set to Enabled if
you have a floppy disk drive installed on the mainboard and want to use it.
Onboard Serial Port 1/2
These items specify the base I/O port address and IRQ for the onboard
Serial Port 1 (COM 1). Selecting to Auto allows BIOS to automatically
determine the correct base I/O port address. Available options are Auto,
3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3 and Disabled. If you have ISA
3-18
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