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I have had a look at the sample and am building it now. <br>
Will there be an option to unmount? I only want the drive mounted for the
period that reading or writing will take place as this is a musical instrument
and I want people to just pull the power off when they are finished without
having to deinitialise the system -- i.e. unmount drives.<br>
<br>
Thomas Doerfler wrote:<br>
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<pre wrap="">Hello Angelo,<br><br>the "sample" program is located in the patch filed in the gnat <br>system as PR369. So if you go to <br><br><a class="moz-txt-link-freetext" href="http://www.oarcorp.com/cgi-bin/gnatsweb.pl">http://www.oarcorp.com/cgi-bin/gnatsweb.pl</a><br><br>and inspect PR369 and download/apply the patch and then look <br>into c/src/tests/samples/fileio, you will see the sample <br>application.<br><br>BTW, you will also need PR368 and PR367 to get everything <br>running (these PRs contain modifications for the DOSFS code <br>and added drivers for PC386 and MBX8xx).<br><br>wkr,<br> Thomas.<br><br><br></pre>
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<pre wrap="">Where are the samples for these? I want to test this out for pc386. Does <br>it support pc386 yet?<br><br>Eugeny S. Mints wrote:<br><br></pre>
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<pre wrap="">On Mon, 3 Mar 2003, Thomas Doerfler wrote:<br><br></pre>
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<pre wrap="">------- Forwarded message follows -------<br>From: "Thomas Doerfler" <a class="moz-txt-link-rfc2396E" href="mailto:Thomas.Doerfler@imd-systems.de"><Thomas.Doerfler@imd-systems.de></a><br>Organization: IMD<br>To: Chris Caudle <a class="moz-txt-link-rfc2396E" href="mailto:chris@chriscaudle.org"><chris@chriscaudle.org></a><br>Date sent: Mon, 03 Mar 2003 09:01:38 +0100<br>Subject: Re: DOSFS bug fixes, IDE drivers and sample released<br>Copies to: Thomas Doerfler <a class="moz-txt-link-rfc2396E" href="mailto:Thomas.Doerfler@imd-systems.de"><Thomas.Doerfler@imd-systems.de></a><br>Priority: normal<br><br><br><br></pre>
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<pre wrap="">On Sunday 02 March 2003 9:48 am, Joel Sherrill wrote:<br><br></pre>
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<pre wrap="">filed as PR 367/368/369 in the GNATS system, see:<br><br></pre>
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<pre wrap="">Does the driver filed in PR 368 support DMA transfer yet, or programmed I/O<br>only?<br><br></pre>
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<pre wrap="">It is really a minimal implementation, supporting PIO mode.<br>Actually I am not so aware about various IDE transfer modes,<br>the integration of DMA into the PC architecture an so on, my<br>goal was to implement at least basic harddisc support.<br><br></pre>
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<pre wrap="">Actually the answer is the following: DMA and POI modes are<br>entities which belong to generic high level ATA driver<br>implemented in ata.c file. In other words wether the data<br>will be transferred in PIO or DMA mode depends on ATA<br>commands issued. In general, low level IDE drivers (as<br>Thomas drivers written for i386 and mbx8xx) just "pass" ATA commands to an<br>IDE chip just by providing ability for writing any data to a<br>chip registers. In addition to the basic<br>functionality described above, current IDE drivers have<br>several routines for optimization of data read/write in PIO<br>mode (*_ide_read_block/*pc386_ide_write_block).<br><br>So, any low level IDE driver has ability to support PIO and<br>DMA modes by definition (but of course current low IDE<br>drivers may need some update for DMA support) and the issue<br>depends on generic ATA driver implementaion. Unfortunately, current ATA<br>driver implementation supports only PIO mod
e, but from the<br>beggining was designed to allow easy extension (I<br>mean addition of new ATA commands). So, generic ATA driver<br>should be modified for DMA mode support.<br><br></pre>
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<pre wrap="">So here is a lot of space to improve things :-)<br><br></pre>
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<pre wrap="">Agree:)))<br><br>Hope, this helps,<br> Eugeny<br><br><br></pre>
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<pre wrap="">-- <br>Angelo Fraietta<br><br>PO Box 859<br>Hamilton NSW 2303<br><br>Home Page<br><br><br><a class="moz-txt-link-freetext" href="http://www.users.bigpond.com/angelo_f/">http://www.users.bigpond.com/angelo_f/</a><br><br>There are those who seek knowledge for the sake of knowledge - that is CURIOSITY<br>There are those who seek knowledge to be known by others - that is VANITY<br>There are those who seek knowledge in order to serve - that is LOVE<br> Bernard of Clairvaux (1090 - 1153)<br><br><br><br></pre>
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<pre wrap=""><!----><br>--------------------------------------------<br>IMD Ingenieurbuero fuer Microcomputertechnik<br>Thomas Doerfler Herbststrasse 8<br>D-82178 Puchheim Germany<br>email: <a class="moz-txt-link-abbreviated" href="mailto:Thomas.Doerfler@imd-systems.de">Thomas.Doerfler@imd-systems.de</a><br>PGP public key available at: <a class="moz-txt-link-freetext" href="http://www.imd">http://www.imd</a>-<br>systems.de/pgp_keys.htm<br><br><br></pre>
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<pre class="moz-signature" cols="$mailwrapcol">--
Angelo Fraietta
PO Box 859
Hamilton NSW 2303
Home Page
<a class="moz-txt-link-freetext" href="http://www.users.bigpond.com/angelo_f/">http://www.users.bigpond.com/angelo_f/</a>
There are those who seek knowledge for the sake of knowledge - that is CURIOSITY
There are those who seek knowledge to be known by others - that is VANITY
There are those who seek knowledge in order to serve - that is LOVE
Bernard of Clairvaux (1090 - 1153)</pre>
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