Acer AR380 F1 User Manual - Page 101
DMA Mode, and Multi Word DMA mode 2.
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83 Select Description 0 Use PIO mode 0. It has a data transfer rate of 3.3 MBs. 1 Use PIO mode 1. It has a data transfer rate of 5.2 MBs. 2 Use PIO mode 2. It has a data transfer rate of 8.3 MBs. 3 Use PIO mode 3. It has a data transfer rate of 11.1 MBs. 4 Use PIO mode 4. It has a data transfer bandwidth of 32 bits. Select Enabled to enable 32-bit data transfer. • DMA Mode Select Description Auto Automatically detect IDE DMA mode when the IDE disk drive support cannot be determined. SWDMA0 Use Single Word DMA mode 0. It has a data transfer rate of 2.1 MBs. SWDMA2 Use Single Word DMA mode 2. It has a data transfer rate of 8.3 MBs. MWDMA0 Use Multi Word DMA mode 0. It has a data transfer rate of 4.2 MBs. MWDMA1 Use Multi Word DMA mode 1. It has a data transfer rate of 13.3 MBs. MWDMA2 Use Multi-Word DMA mode 2. It has a data transfer rate of 16.6 MBs. UDMA0 Use Ultra DMA mode 0. It has a data transfer rate of 16.6 MBs. It has the same transfer rate as PIO mode 4 and Multi Word DMA mode 2. UDMA1 Use Ultra DMA mode 1. It has a data transfer rate of 25 MBs. UDMA2 Use Ultra DMA mode 2. It has a data transfer rate of 33.3 MBs. UDMA3 Use Ultra DMA mode 3. It has a data transfer rate of 66.6 MBs.