Subversion Repositories wb_dma

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<b><font face="Helvetica, Arial"><font color="#BF0000"><font size=+2>Project Name:

WISHBONE DMA/Bridge IP Core</font></font></font></b>

<p><font size=-1>(See change Log at bottom of page for changes/updates)</font>

<br>&nbsp;

<p><u><font size=+1>Description</font></u>

<p>This is a simple DMA/Bridge IP core. It has two WISHBONE interface. It can

  perform DMA transfers between the two interfaces or on the same interfaces.

<p>Some of the main features are:

<ul>

  <li>Up to 31 DMA Channels</li>

  <li>2, 4 or 8 priority levels</li>

  <li>Linked List Descriptors support</li>

  <li>Circular Buffer support</li>

  <li>FIFO buffer support</li>

  <li>Software &amp; Hardware handshake support</li>

  <li>Automatic Cannel registers Reload support</li>

  <li>Fully configurable</li>

</ul>

<p>Please see the spec for more details !

<p><u><font size=+1>Status</font></u>

<ul>

  <li>10/19/2001 Made the core parametarized - No more editing of the wb_dma_defines.v

    file, just pass the configuration as parameters when you instantiate the core

    ! </li>

  <li>8/2/2001 Added another feature: Now you can backoff to the beginning of

    the current transfers (this is useful for things like Etherenet, where you

    might have to restart in case of collisions or errors).</li>

  <li>New Directory Structure ! We have agreed on a common directory structure

    at OpenCores.</li>

  <li><font color="#FF0000">PLEASE HELP</font>: I'm looking for people to help

    me verify the core. Even though I have written a test bench (and checked it

    in) I would like for somebody else to verify the core as well.</li>

  <li> I will post a message to cores@opencores.org_NOSPAM each time I have an

    update </li>

</ul>

<p><u><font size="+1">Downloading</font></u>

<p>To get a tared and gziped snapshot from CVS click <a href="http://www.opencores.org/cgi-bin/cvsget.cgi?module=wb_dma">here</a>,

  or go to the <a href="http://www.opencores.org/cvs.shtml">CVS info page</a>.</p>

<p>The Specification is available here: <a href="http://www.opencores.org/cgi-bin/cvsget.cgi/wb_dma/doc/dma_doc.pdf">dma_doc.pdf

  (about 230K)</a></p>

<p>&nbsp;

<p><u><font size=+1>Author / Maintainer</font></u>

<p>I have been doing ASIC design, verification and synthesis for over 15 years.

  I hope you find this cores useful. Please send me a note if you intend to use

  it  !

<p>Rudolf Usselmann

<br><a href="mailto:rudi@asics.ws_NOSPAM">rudi@asics.ws_NOSPAM</a>

<br>

  <a href="http://www.asics.ws">www.asics.ws</a>

<p>Feel free to send me comments, suggestions and bug reports.

<p><u><font size=+1>Change Log</font></u>

<ul>

  <p>10/19/2001 Made the core parameterized<br>

    8/2/2001 Added another feature, Directory Structure has changed<br>

    6/6/2001 RU Second Release<br>

    19/3/2001 RU Released Code<br>

    16/3/2001 RU Initial web page </p>

</ul>

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