The ECP setting is the fastest IF you can get it to work with your
combination of equipment and available resources.  It takes a DMA port
resource to work.

The EPP is next fastest and is fairly reliable.

Bi-directional setting allows communication both ways between the parallel
port device and the computer. Very reliable.

Uni-directional is also a setting available on some older machines.   It
has one way communication to the parallel port attached device.

Doug


At 4/15/00 09:39 PM -0500, Mandi Wilson wrote:

>Did you ever get an answer for this? ECP=Extended Capabilities Port and
>EPP=Enhanced Parallel Port but I don't know what difference the settings
>make either! I would just try each setting and see which one works best.
>
>Mandi
>
>From: David Hurst <[log in to unmask]>
> > Trying to get a scanner working on a parallel port..
> > In the BIOS setup, the port can be set as ECP, EPP, Bi-directional.
> > What is the difference in these settings..??

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                       Drew Dunn<[log in to unmask]>