Intel ECB-865 User Manual

ECB-865 User’s Manual  65  

 

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:  

on-board parallel port function is ineffective and N/A 

locate IRQ7 for this default I/O address 

assign this I/O address to LPT1 

assign this I/O address to LPT1 

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”. 

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.