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<TITLE>Using XF86_W32 on an ET6000-based board </TITLE>
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<A HREF="W32.html"><EM> Information for W32 and ET6000 Chipset Users</EM></A>
 <b>:</b> <EM>Using XF86_W32 on an ET6000-based board </EM><BR>
<b>Previous:</b> <A HREF="W323.html"><EM>Using XF86_W32 on a board with an STG1703 GENDAC </EM></A><BR>
<b>Next:</b> <A HREF="W325.html"><EM>Using <code>XF86_SVGA</code> with ET4000/W32 and ET6000 cards </EM></A>


<HR NOSHADE>
  <H2><A NAME="4"></A>4. Using XF86_W32 on an ET6000-based board </H2>
<p>The ET6000 driver code was developed on top of the existing ET4000/W32 code,
because of the many similarities between both devices. As with the other W32
(external) clockchip/RAMDAC devices, the ET6000's built-in clockchip/RAMDAC
provides a set of 8 standard clocks, which could be probed with the normal
XFree clock probing procedure.
In spite of that, XF86_W32 will always use the built-in programmable clockchip
and RAMDAC. So there is no need for a
<blockquote><code>
<pre>
 ClockChip "et6000" 
</pre>
</code></blockquote>
 or a 
<blockquote><code>
<pre>
 Ramdac "et6000" 
</pre>
</code></blockquote>
 line in the
Device Section of the XF86Config file. Once it knows it's dealing with an
ET6000, XF86_W32 will find its own way.
At this moment, accelerated support is very sketchy, and only uses those
things the ET4000/W32 code already provided, with some changes due to
incompatibilities between the two devices. Major speed improvements should
be possible.
Tseng Labs specifies a maximum pixel clock of 135 MHz for the ET6000 chips
(with higher clocks to come).</p>
<p>There is a known bug in this server when using it with ET6000 cards with
2.25 MB MDRAM: the server will detect 2.5 MB instead, and as a result, most
accelerated operations won't work. On cards with 2.25 MB MDRAM, you
<i>must</i> insert a 
<blockquote><code>
<pre>
 VideoRam 2304 
</pre>
</code></blockquote>
 line
in your XF86Config.</p>

 <HR NOSHADE>
<A HREF="W32.html"><EM> Information for W32 and ET6000 Chipset Users</EM></A>
 <b>:</b> <EM>Using XF86_W32 on an ET6000-based board </EM><BR>
<b>Previous:</b> <A HREF="W323.html"><EM>Using XF86_W32 on a board with an STG1703 GENDAC </EM></A><BR>
<b>Next:</b> <A HREF="W325.html"><EM>Using <code>XF86_SVGA</code> with ET4000/W32 and ET6000 cards </EM></A>



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