Subject: Re: Parallel port control?
To: Jukka Marin <firstname.lastname@example.org>
From: Dave Sainty <email@example.com>
Date: 05/01/1998 01:11:07
Jukka Marin writes:
> Is it possible to freely control the pc parallel port pins under NetBSD
> in a special application? I want to use some pins for inputs, some for
> outputs. Is it necessary to write a custom device driver for this?
I did this a while back in the most obvious hacky way, I added some
ioctl's that gave direct access to the registers. :)
One for reading, one for writing, and a register offset from the
device IO base.
Not really suitable, and this was a very long time ago. However, the
need has just arisen once again, so I'd be interested if anyone has a
somewhat nice patch for doing this also... Or alternatively
absolutely anything that would apply against a recent kernel. :)