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X8DTU-6F+/X8DTU-6TF+/X8DTU-6(T)F+-LR Motherboard User’s Manual
a time. Select Auto to allow data transfer from and to the device occur multiple
sectors at a time if the device supports it. The options are Auto and Disabled.
PIO Mode
The IDE PIO (Programmable I/O) Mode programs timing cycles between the
IDE drive and the programmable IDE controller. As the PIO mode increases, the
cycle time decreases. The options are Auto, 0, 1, 2, 3, and 4.
Select Auto to allow the AMI BIOS to automatically detect the PIO mode. Use
this value if the IDE disk drive support cannot be determined.
Select 0 ~ 4 to allow the AMI BIOS to use PIO mode 0 ~ 4. It has a data transfer
rate of 3.3 MB/s ~ 16.6 MB/s. See the table below.
PIO Mode Select Options
Option Selected PIO Mode Max. Transfer Rate
0 PIO Mode 0 3.3 MB/s
1 PIO Mode 1 5.2 MB/s
2 PIO Mode 2 8.3 MB/s
3 PIO Mode 3 11.1 MB/s
4 PIO Mode 4 16.6 MB/s
DMA Mode
Select Auto to allow the BIOS to automatically detect IDE DMA mode when the
IDE disk drive support cannot be determined. The options are Auto, SWDMAn,
MWDMAn, and UDMAn. See the table below for DMA Mode Select Options.
DMA Mode Select Options
Option Selected DMA Mode Max. Transfer Rate
SWMA 0 Single-Word DMA 0 2.1 MB/s
SWMA 1 Single-Word DMA 1 4.2 MB/s
SWMA 2 Single-Word DMA 2 8.3 MB/s
MWDMA 0 Multi-Word DMA 0 4.2 MB/s
MWDMA 1 Multi-Word DMA 1 13.3 MB/s
MWDMA 2 Multi-Word DMA 2 16.6 MB/s
UDMA 0 Ultra DMA 0 16.6 MB/s
UDMA 1 Ultra DMA 1 25 MB/s
UDMA 2 Ultra DMA 2 33.3 MB/s
UDMA 3 Ultra DMA 3 44.4 MB/s
UDMA 4 Ultra DMA 4 66.6 MB/s
UDMA 5 Ultra DMA 5 100 MB/s
UDMA 6 Ultra DMA 6 133 MB/s