kopia lustrzana https://gitlab.com/sane-project/website
61 wiersze
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61 wiersze
3.1 KiB
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<!-- received="Wed Jul 22 07:56:50 1998 PDT" -->
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<!-- sent="Wed, 22 Jul 1998 10:56:37 -0400 (EDT)" -->
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<!-- name="Antal Novak" -->
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<!-- subject="Re: developing plustek driver-- questions" -->
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<!-- inreplyto="Pine.SUN.3.95.980722115934.28430A-100000@weeble.lut.ac.uk" -->
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<title>sane-devel: Re: developing plustek driver-- questions</title>
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<h1>Re: developing plustek driver-- questions</h1>
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<b>Antal Novak</b> (<a href="mailto:afn@weevil.net"><i>afn@weevil.net</i></a>)<br>
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<i>Wed, 22 Jul 1998 10:56:37 -0400 (EDT)</i>
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<li> <b>Messages sorted by:</b> <a href="date.html#129">[ date ]</a><a href="index.html#129">[ thread ]</a><a href="subject.html#129">[ subject ]</a><a href="author.html#129">[ author ]</a>
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<li> <b>Next message:</b> <a href="0130.html">becka@rz.uni-duesseldorf.de: "Re: TIFF Image File Format"</a>
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<li> <b>Previous message:</b> <a href="0128.html">Antal Novak: "Re: ANNOUNCE: Plustek backend"</a>
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</ul>
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<i>> On Tue, 21 Jul 1998, Antal Novak wrote:</i><br>
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<i>> > I don't like low-level OS-dependent... I've got FreeBSD and Linux, and I'm</i><br>
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<i>> > sure many others use different OSes; it would be too hard to develop</i><br>
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<i>> > low-level drivers for every OS. It's much simpler to have to manually</i><br>
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<i>> > specify an I/O port (and in the future, it might be auto-detectable)...</i><br>
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<i>> </i><br>
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<i>> But surely the low level driver code has to live in kernel space in order</i><br>
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<i>> to make use of interrupts and not busy wait on the port? If the driver</i><br>
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<i>> runs in user space, even if it is run as root and niced to a high priority</i><br>
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<i>> it isn't going to get the snappy response that a kernel module could get?</i><br>
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<i>> Especially seeing as the standard parallel port doesn't come with DMA so</i><br>
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<i>> the processor has to be involved in every byte transfered? Whilst</i><br>
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<i>> effectively hanging the machine whilst a scan is in progress is OK in the</i><br>
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<i>> Windoze world, I don't think it sounds terribly nice for the UNIX</i><br>
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<i>> environment. Or is there a cunning way of doing an efficient, platform</i><br>
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<i>> independent, user space, low level driver that I've missed?</i><br>
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<p>
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Well... maybe further down the line. At this point, all I'm interested in<br>
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is a working SANE driver.<br>
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<p>
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Do other parallel port drivers require kernel support?<br>
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<p>
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afn<br>
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<p>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
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To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
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</pre>
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<li> <b>Next message:</b> <a href="0130.html">becka@rz.uni-duesseldorf.de: "Re: TIFF Image File Format"</a>
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<li> <b>Previous message:</b> <a href="0128.html">Antal Novak: "Re: ANNOUNCE: Plustek backend"</a>
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</ul>
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