Abit BX6 Pentium II Manuel d'utilisateur télécharger pdf (Page 56)

Appendix BB-2

The higher the MODE value is, the best is the hard disk data transfer rate.

But this does not mean that you can select the highest mode value as you like.

You must be sure that your hard disk supports that type of fast data transfer,

otherwise your hard disk will not be able to operate correctly.

Here are some examples of data transfer rates for IDE HDD with DMA

mode:

DMA Mode 0 The fastest data transfer rate reaches 4.16Mbyte/sec

DMA Mode 1 The fastest data transfer rate reaches 13.3Mbyte/sec

DMA Mode 2 The fastest data transfer rate reaches 16.6Mbyte/sec

Usually, PIO mode means that the hard disk data are accessed by the CPU

through the chipset and placed into memory, and the chipset is using PIO mode

to access hard disk data.

MASTER mode means that hard disk data are accessed by the chipset, and

that the chipset places the data into memory. The chipset is using DMA or PIO

mode to access data stored in the hard disk drive. The Master mode can reduce

the CPU load, especially in a Multi-task environment. This can help system

performance.

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Abit BX6 Pentium II Manuel d'utilisateur Page 56