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3-7-1 OnChip IDE Function
Phoenix – AwardBIOS CMOS Setup Utility
OnChip IDE Function
Item Help
OnChip IDE Channel 0 Enabled
Primary Master PIO Auto
Primary Slave PIO Auto
Primary Master UDMA Auto
Primary Slave UDMA Auto
IDE DMA Transfer Access Enabled
IDE Prefetch Mode Enabled
IDE HDD Block Mode Enabled
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OnChip IDE Channel 0/Channel 1
The integrated peripheral controller contains an IDE interface with support for two IDE
channels. Select
Enabled
to activate each channel separately. The settings are: Enabled and
Disabled.
Primary 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 supports. Modes 0 through 4 provide
successively increased performance. In Auto mode, the system automatically determines the
best mode for each device. The settings are: Auto, Mode 0, Mode 1, Mode 2, Mode 3, Mode
4.
Primary Master/Slave UDMA
Ultra DMA/33 implementation is possible only if your IDE hard drive supports it and the
operating environment includes a DMA driver (Windows 95 OSR2 or a third-party IDE bus
master driver). If your hard drive and your system software both support Ultra DMA/33 and
Ultra DMA/66, select Auto to enable BIOS support. The settings are: Auto, Disabled.
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 (most new drives do), select Enabled for automatic
detection of the optimal number of block read/writes per sector the drive can support. The
settings are: Enabled, Disabled.
