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From: pc123@cus.cam.ac.uk (Pete Chown)
Subject: Re: The lpt device driver
In-Reply-To: lynn@fusion.physics.auburn.edu's message of Fri, 15 Jan 1993 18:35:13 GMT
Message-ID: <PC123.93Jan16170507@apus.cus.cam.ac.uk>
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References: <lynn.930115123513@fusion.physics.auburn.edu>
Date: Sat, 16 Jan 1993 17:05:10 GMT
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In article <lynn.930115123513@fusion.physics.auburn.edu> lynn@fusion.physics.auburn.edu (Owen Lynn) writes:
I have one quick question about installing the /dev/lp.
Does one need the source code in order to reconfigure the
kernel to create the /dev/lp?
Not only do you need the source, but you will need to do a lot of
hacking on it, if your chipset is anything like mine. I found that I
got about one character every couple of seconds, because my I/O card
wasn't generating the interrupts the driver was expecting. So I
hacked the driver to just spin for a while sending characters when it
could. Then it descheduled itself with a low wakeup priority to let
other things get a chance.
Has anyone else had this problem, and if so do you have anything
better to suggest? (BTW, I did check that the IRQ number was right!)
--
---------------------------------------------+ "A tight hat can be stretched.
Pete Chown, pc123@phx.cam.ac.uk (Internet) | First damp the head with steam
pc123@uk.ac.cam.phx (Janet :-) -+ from a boiling kettle."