Date: Sat, 9 Jan 1999 20:30:41 +0000 From: Nicolas Souchu <nsouch@teaser.fr> To: Alexander Leidinger <netchild@wurzelausix.cs.uni-sb.de> Cc: current@FreeBSD.ORG Subject: Re: nlpt & polling mode didn't work Message-ID: <19990109203041.00416@breizh.prism.uvsq.fr> In-Reply-To: <199901081218.NAA01555@Vodix.CS.Uni-SB.de>; from Alexander Leidinger on Fri, Jan 08, 1999 at 01:18:52PM %2B0100 References: <19990107231544.61205@breizh.prism.uvsq.fr> <199901081218.NAA01555@Vodix.CS.Uni-SB.de>
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On Fri, Jan 08, 1999 at 01:18:52PM +0100, Alexander Leidinger wrote:
>
>On 7 Jan, Nicolas Souchu wrote:
>
>>>>>The problem:
>>>>>It takes a looooong time to send data to the printer.
>>>>
>>>> Printing is ok?
>>>
>>>I think (nobody wants to wait more than 15 minutes for the page).
>>>BTW: I have only 3rd person access to it. Its the system of my brother,
>>>and hi is only an user.
>>
>> And I imagine the old-lpt code works.
>
>No. lpt didn't work, but I remember it didn't work the first time I
>tried it too. It worked only with nlpt.
Timing then. nlpt is slower than lpt because of indirection calls. So
something must have speedup the machine because nothing changed in nlpt since
it was properly working.
>
>> You may add printfs to the /sys/dev/ppbus/nlpt.c to check where it fails.
>
>To nlpt_pushbytes()?
>What am I looking for?
Yes and nlpt_write(). You may add something like this for ppb_wxx() calls:
u_char cc;
do {
cc = STROBE_or_what_else;
ppb_wctr(..., cc);
} while (ppb_rctr(...) != cc);
to be sure ppb_wxxx() are correctly done.
And you may add delays here and there to slow down the driver.
>
>Bye,
>Alexander.
>
>--
> "Darth Vader sleeps with a Teddywookie."
> Fortune cookie
>http://netchild.home.pages.de/ A.Leidinger @ wurzelausix.cs.uni-sb.de
>
>
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--
nsouch@teaser.fr / nsouch@freebsd.org
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