Dma mode, Advanced setup cp305 bios – Kontron CP305 BIOS User Manual
Page 34
Advanced Setup
CP305 BIOS
Page 24
ID 1035-8356, Rev. 1.0
P R E L I M I N A R Y
DMA Mode
This function is used to adjust the DMA mode options.
Optimal and Fail-Safe default settings: Auto
SETTING
DESCRIPTION
Auto
Use this setting to allow the BIOS to auto detect the DMA mode if the IDE disk drive support cannot
be determined.
SWDMA0
Use this setting to allow the BIOS to use Single Word DMA mode 0. This mode has a data transfer
rate of 2.1 MB/s.
SWDMA1
Use this setting to allow the BIOS to use Single Word DMA mode 1. This mode has a data transfer
rate of 4.2 MB/s.
SWDMA2
Use this setting to allow the BIOS to use Single Word DMA mode 2. This mode has a data transfer
rate of 8.3 MBs/.
MWDMA0
Use this setting to allow the BIOS to use Multi Word DMA mode 0. This mode has a data transfer
rate of 4.2 MB/s.
MWDMA1
Use this setting to allow the BIOS to use Multi Word DMA mode 1. This mode has a data transfer
rate of 13.3 MB/s.
MWDMA2
Use this setting to allow the BIOS to use Multi Word DMA mode 2. This mode has a data transfer
rate of 16.6 MBs.
UDMA0
Use this setting to allow the BIOS to use Ultra DMA mode 0. This mode has a data transfer rate of
16.6 MB/s, which is the same transfer rate as the PIO mode 4 and the Multi Word DMA mode 2.
UDMA1
Use this setting to allow the BIOS to use Ultra DMA mode 1. This mode has a data transfer rate of
25 MB/s.
UDMA2
Use this setting to allow the BIOS to use Ultra DMA mode 2. This mode has a data transfer rate of
33.3 MB/s.
UDMA3
Use this setting to allow the BIOS to use Ultra DMA mode 3. This mode has a data transfer rate of
44.4 MB/s. To use this mode, it is required that an 80-conductor ATA cable is used.
UDMA4
Use this setting to allow the BIOS to use Ultra DMA mode 4. This mode has a data transfer rate of
66.6 MB/s. To use this mode, it is required that an 80-conductor ATA cable is used.
UDMA5
Use this setting to allow the BIOS to use Ultra DMA mode 5. This mode has a data transfer rate of
99.9 MB/s. To use this mode, it is required that an 80-conductor ATA cable is used.