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35 Chapter 4
4.5.14 UR2 Duplex Mode
This item allows you to select the IR half/full duplex funcion. The
choices: Half, Full.
4.5.15 Onboard Parallel Port
This field sets the address of the on-board parallel port connector. You
can select either 3BCH/IRQ7, 378H/IRQ7, 278H/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.
4.5.16 Parallel Port Mode
This field allows you to set the operation mode of the parallel port. The
setting “Normal” 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 bi-directional mode
and at a speed faster than the maximum data transfer rate. “ECP + EPP”
allows normal speed operation in a two-way mode.
4.5.17 EPP Mode Select
This field allows you to select EPP port type 1.7 or 1.9. The choices:
EPP1.7, 1.9.
4.5.18 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, DMA channel 3, or Disable. Leave this field on the
default setting.