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<!-- received="Thu Jan 8 02:34:41 1998 PST" -->
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<!-- name="A. Leidenfrost" -->
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<!-- subject="Re: UMAX 1200S SCSI CARD" -->
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<!-- inreplyto="9801080943.AA43566@cks1.rz.uni-rostock.de" -->
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<title>sane-devel: Re: UMAX 1200S SCSI CARD</title>
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<h1>Re: UMAX 1200S SCSI CARD</h1>
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<b>A. Leidenfrost</b> (<a href="mailto:leidenfrost@dkrz.de"><i>leidenfrost@dkrz.de</i></a>)<br>
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<i>Thu, 08 Jan 1998 11:34:44 +0100 (CET)</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#29">[ date ]</a><a href="index.html#29">[ thread ]</a><a href="subject.html#29">[ subject ]</a><a href="author.html#29">[ author ]</a>
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<li> <b>Next message:</b> <a href="0030.html">Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>Next message:</b> <a href="0030.html">Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>Previous message:</b> <a href="0028.html">Peter Schildmann: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>In reply to:</b> <a href="0028.html">Peter Schildmann: "Re: UMAX 1200S SCSI CARD"</a>
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-----BEGIN PGP SIGNED MESSAGE-----<br>
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<p>
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<p>
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On 07-Jan-98 Peter Schildmann wrote:<br>
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<i>>> > I am using a NCR53C810 and a NCR/SymbiosLogic 53C860 and</i><br>
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<i>>> > while I am scanning (using the bsd-driver) I am not able</i><br>
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<i>>> > to access the disks for a while!</i><br>
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<i>>> </i><br>
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<i>>> that's weird - I also use a NCR 810 based card (ASUS SC200) with</i><br>
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<i>>> a harddisk, a tape drive and a scanner (Umax Astra 1200)</i><br>
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<i>>> connected to it; during a scan, disk access is slower, but</i><br>
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<i>>> certainly possible...</i><br>
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<i>> </i><br>
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<i>> Many cheap scanners do not support the SCSI-2 disconnect/reselect</i><br>
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<i>> protocol. This could be the reason for slow disk access.</i><br>
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<i>> </i><br>
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<i>> Peter</i><br>
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<p>
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We also use a NCR53C810 for the scanner and a NCR/SymbiosLogic 53C860 for our<br>
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other SCSI devices. The scanner is a Microtek Scanamker E6 which doesn't<br>
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support SCSI-2 disconnect/reselect. However, this is exactly why we use two DMA<br>
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bus master cards. The card that comes with the scanner (aha152x )isn't bus<br>
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master capable. We are also using the BSD driver and the use of the two SCSI<br>
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controllers solved our disk access problems perfectly. So, maybe the first<br>
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person needs a SCSI BIOS upgrade or something. Just to make sure: The scanner<br>
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is attached to the NCR53C810 and the rest to the NCR/SymbiosLogic 53C860.<br>
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<p>
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Regards,<br>
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<p>
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Andree<br>
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- ---<br>
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Andree Leidenfrost, GEOPHYSICIST<br>
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<p>
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Institute of Geophysics, Hamburg University<br>
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Bundesstrasse 55, 20146 Hamburg, Germany<br>
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phone +49 40 4123 2984, fax +49 40 4123 5441<br>
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<a href="http://www.app-geoph.dkrz.de/andree">http://www.app-geoph.dkrz.de/andree</a><br>
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<p>
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finger <a href="mailto:u250011@gp12.dkrz.de">u250011@gp12.dkrz.de</a> for PGP public key<br>
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PGP fingerprint = 5F FC 44 FF 84 71 C4 46 72 64 9A F0 EF 99 89 7C<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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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0030.html">Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>Next message:</b> <a href="0030.html">Oliver.Rauch@Wolfsburg.DE: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>Previous message:</b> <a href="0028.html">Peter Schildmann: "Re: UMAX 1200S SCSI CARD"</a>
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<li> <b>In reply to:</b> <a href="0028.html">Peter Schildmann: "Re: UMAX 1200S SCSI CARD"</a>
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<!-- nextthread="start" -->
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