One correction:  I don't believe EPP requires (or uses) an IRQ.  ECP
definitely does, but I'm pretty sure EPP doesn't.

Most high-speed peripherals that I've encountered work fine with the port
set to EPP in CMOS, but I have had problems with systems in general with
the parallel ports set for ECP, so I avoid using it.

-JOWj.

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On Mon, 12 Apr 1999, David Gillett wrote:

>   The parallel LPT1 port is normally assigned IRQ 7, but most printers
> don't use it and so this has become a popular IRQ to use for othe
> devices such as sound cards.  Parallel port devices such as your drive
> typicllay require the port to be configured as an ECP or EPP port, and
> typically *do* use the assigned IRQ, and so installation of such a
> device may introduce a conflict where none was apparent before.

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