Aaeon PCM-4335 Manual page 58

This option specifies the parallel port mode. ECP and EPP are
both bidirectional data transfer sechemes that adhere to the IEEE
P1284 specification. The settings are:
Normal
EPP
ECP
This option is setting for the Parallel Port Mode.
The settings are DMA, CH (channel) 0, DMA CH 1, DMA CH2,
or DMA CH3.
IRQ7 is used for the Parallel Port (LPT 1). The IRQ can be
changed to IRQ5.
This option enables serial port 1 on the motherboard and
specifies the base I/O port address for serial port 1~4.
The settings are Disabled, 3F8h, 3E8h, 2E8h, and 2F8h.
50 PCM-4335 User Manual
The normal parallel port mode is used. This is the
default setting.
The parallel port can be used with devices that adhere
to the Enhanced Parallel Port (EPP) specification.
EPP uses the existing parallel port signals to provide
asymmetric bidirectional data transfer driven by the
host device.
The parallel port can be used with devices that adhere
to the Extended Capabilities Port (ECP) specification.
ECP uses the DMA protocol to achieve transfer rates
of approximately 2.5 Mbs. ECP provides symmetric
bidirectional communications.