Advantech PCA-6185 User Manual

3.6.2.1 Onboard FDC Controller
When enabled, this field allows you to connect your floppy disk drives to 
the onboard floppy disk drive connector instead of a separate controller 
card. If you want to use a different controller card to connect the floppy 
disk drives, set this field to Disabled.
3.6.2.2 Onboard Serial Port 1 (3F8H/IRQ4)
The settings are Auto 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, and 
Disabled for the on-board serial connector.
3.6.2.3 Onboard Serial Port 2 (2F8H/IRQ3)
The settings are Auto 3F8/IRQ4, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, and 
Disabled for the on-board serial connector.
3.6.2.4 Onboard Parallel Port (378H/IRQ7)
This field sets the address of the on-board parallel port connector. You 
can select either 3BC/IRQ7, 378/IRQ7, 278/IRQ5 or Disabled. If you 
install an I/O card with a parallel port, make sure there is no conflict in 
the address assignments. The CPU card can support up to three parallel 
ports, as long as there are no conflicts for each port.
3.6.2.5 Parallel Port Mode (ECP + EPP)
This field allows you to set  the operation mode of the parallel port. The 
setting “SPP” allows normal speed operation, but in one direction only. 
“EPP” allows bidirectional parallel port operation at maximum speed. 
“ECP” allows the parallel port to operate in bidirectional mode and at a 
speed faster than the maximum data transfer rate. “ECP + EPP” allows 
normal speed operation in a two-way mode.
3.6.2.6 ECP Mode Use DMA
This selection is available only if you select “ECP” or  “ECP + EPP” in 
the Parallel Port Mode field. In ECP Mode Use DMA, you can select-
DMA channel 1 or DMA channel 3. Leave this field on the default set-
ting.

3.6.3.1 USB Controller
This should be enabled if your system has a USB installed on the system 
board and you want to use it. Even when so equipped, if you add a higher 
performance controller, you will need to disable this feature.  The choice: 
Enabled, Disabled.