Acer AT150 F1 - Manual (Page 90)

4 System BIOS 78
DMA Mode Auto,
SWDMAn,
MWDMAn,
UDMAn
Select Auto to allow the BIOS to automatically detect
IDE DMA mode when the IDE disk drive support cannot
be determined.
Select SWDMA0 to allow the BIOS to use Single-Word
DMA mode 0. It has a data transfer rate of 2.1 MB/s.
Select SWDMA1 to allow the BIOS to use Single-Word
DMA mode 1. It has a data transfer rate of 4.2 MB/s.
Select SWDMA2 to allow the BIOS to use Single-Word
DMA mode 2. It has a data transfer rate of 8.3 MB/s.
Select MWDMA0 to allow the BIOS to use Multi-Word
DMA mode 0. It has a data transfer rate of 4.2 MB/s.
Select MWDMA1 to allow the BIOS to use Multi-Word
DMA mode 1. It has a data transfer rate of 13.3 MB/s.
Select MWDMA2 to allow the BIOS to use Multi-Word
DMA mode 2. It has a data transfer rate of 16.6 MB/s.
Select UDMA0 to allow the BIOS to use Ultra DMA mode
0. It has a data transfer rate of 16.6 MB/s. It has the
same transfer rate as PIO mode 4 and Multi-Word DMA
mode 2.
Select UDMA1 to allow the BIOS to use Ultra DMA mode
1. It has a data transfer rate of 25 MB/s.
Select UDMA2 to allow the BIOS to use Ultra DMA mode
2. It has a data transfer rate of 33.3 MB/s.
Select UDMA3 to allow the BIOS to use Ultra DMA mode
3. It has a data transfer rate of 66.6 MB/s.
Select UDMA4 to allow the BIOS to use Ultra DMA mode
4. It has a data transfer rate of 100 MB/s.
Select UDMA5 to allow the BIOS to use Ultra DMA mode
5. It has a data transfer rate of 133 MB/s.
Select UDMA6 to allow the BIOS to use Ultra DMA mode
6. It has a data transfer rate of 133 MB/s.
Parameter Description Options