P4M80-M7 BIOS Manual
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5.1.5 IDE Primary / Secondary Master / Slave PIO
The IDE PIO (Programmed Input / Output) fields let you set a PIO mode (0-4) for
each of the IDE devices that the onboard IDE interface supports. Modes 0 through 4
provides successively increased performance. In Auto mode, the system
automatically determines the best mode for each device.
The Choices:Auto
(default), Mode0, Mode1, Mode2, Mode3, Mode4.
5.1.6 IDE Primary / Secondary Master / Slave UDMA
Ultra DMA/100 functionality can be implemented if it is supported by the IDE hard
drives in your system. As well, your operating environment requires 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/100, select Auto to enable BIOS
support.
The Choices: Auto
(default), Disabled.
5.1.7 IDE HDD Block Mode
If your IDE hard drive supports block mode, select “Enabled” for automatic
detection of the optimal number of block read/ writes per sector the drive can
support.
The Choices: Enabled
(default), Disabled.
