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Date: Tue, 3 Aug 2004 18:49:35 +0200
From: Nicolas Rachinsky <list@rachinsky.de>
To: Fernando Gleiser <fgleiser@cactus.fi.uba.ar>
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cc: hackers@freebsd.org
Subject: Re: Controlling external hardware via lpt0
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* Fernando Gleiser <fgleiser@cactus.fi.uba.ar> [2004-08-03 13:04 -0300]:
> I need to control some external hardware with a small program in
> FreeBSD. I thought about using the 8 data bits of the parallel port
> for sending the control bits  to the hardware.
> The hardware is a very simple combinational logic, triggered by level,
> I don't need any flow control or such.
> 
> The soft opens /dev/lpt0 and then writes whatever value is needed (i.e,
> if I need the 2 lsb to be high and the rest low, I write 0x3)

Wouldn't ppi(4) fit your needs better?

Nicolas