Advantech PCA-6194, User Manual

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PCA-6194 User Manual 42
Figure 3.6: On-Chip IDE Device
3.6.1 IDE HDD Block Mode
If your IDE hard drive supports block mode select Enabled for automatic
detection of the optimal number of block read/writes per sector the drive
can support.
3.6.2 IDE DMA Transfer Access
Use this field to enable or disable IDE DMA transfer access.
3.6.3 On-Chip Primary / Secondary IDE Device
IDE Primary Master/Slave PIO/UDMA Mode (Auto). The channel has
both a master and a slave, making four IDE devices possible. Because
two IDE devices may have a different Mode timing (0, 1, 2, 3, 4), it is
necessary for these to be independent. The default setting “Auto” will
allow auto detection to ensure optimal performance.