Intel 4.3.6.4On Board Parallel Port, Disabled, 378h, 278h, 3BCh, ECB-865User’s Manual

ECB-865

4.3.6.4On 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

4.3.6.4.1Parallel 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
	The parallel port can be used with devices that
	adhere to the Enhanced Parallel Port (EPP)
EPP	specification. EPP uses the existing parallel port
	signals to provide asymmetric bi-directional data
	transfer driven by the host device.
	The parallel port can be used with devices that
	adhere to the Extended Capabilities Port (ECP)
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.

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