Advantech DSA-3400 User Manual page 44

Figure 4.5: Integrated Peripherals
4.6.1 On-Chip Primary PCI IDE
Some UDMA cables use a hole in the ribbon cable as a cable detect mechanism to determine
if a UDMA IDE or standard IDE cable is installed. The default setting is "Enabled".
4.6.2 IDE Master/Slave PIO/UDMA Mode,
IDE Primary (Secondary) Master/Slave PIO/UDMA Mode (Auto) Each channel (Primary and
Secondary) has both a master and a slave, making four IDE devices possible. Because each
IDE device 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.
4.6.3 On-Chip Secondary PCI IDE
If you enable IDE HDD Block Mode, the enhanced IDE driver will be enabled. Leave IDE HDD
Block Mode on the default setting.
4.6.4 IDE HDD Block Mode
You can enable the Primary IDE channel and/or the Secondary IDE channel. Any channel not
enabled is disabled. This field is for systems with only SCSI drives.