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ECB-865
ECB-865 User’s Manual 65
4.3.6.4 On Board Parallel Port
There are four optional items Parallel Port Mode, EPP Version, Parallel Port IRQ, and
Parallel Port DMA Channel used to control on-board parallel port interface while user
select I/O base address manually. The following lists are available options of on-board
parallel port:
Disabled on-board parallel port function is ineffective and N/A
378h locate IRQ7 for this default I/O address
278h assign this I/O address to LPT1
3BCh assign this I/O address to LPT1
4.3.6.4.1 Parallel Port Mode
This option specifies the parallel port mode. ECP and EPP are both bi-directional data
transfer schemes that adhere to the IEEE P1284 specifications. This Parallel Port Mode
includes four options “Normal”, “Bi-Dir”, “EPP”, and “ECP”.
Setting Description
Normal Uni-direction operation at normal speed
Bi-Dir Bi-direction operation at normal speed
EPP
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 bi-directional data
transfer driven by the host device.
ECP
The parallel port can be used with devices that
adhere to the Extended Capabilities Port (ECP)
specification. ECP uses the DMA protocol to
achieve data transfer rates up to 2.5 Megabits
per second ECP provides symmetric bi-
directional communicational.