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-<table class="head">
- <tr>
- <td class="head-ltitle">MEMC(4)</td>
- <td class="head-vol">Device Drivers Manual (mvme68k)</td>
- <td class="head-rtitle">MEMC(4)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">memc</code> &#x2014;
- <span class="Nd">MVME162-MVME177 Memory Controller Chip</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp"><code class="Cd">memc* at mainbus0</code></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">The <code class="Nm">memc</code> devices are used on MVME162,
- MVME167, MVME172 and MVME177 boards to manage one or more DRAM modules.</p>
-<p class="Pp">Depending on the type of DRAM module fitted, the device will
- either be a MEMC040 device or an MCECC device. The former manages a Parity
- DRAM module while the latter manages an ECC DRAM module.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1>
-<dl class="Bl-diag Bl-compact">
- <dt>memc0 at mainbus0.</dt>
- <dd>This is the normal autoconfiguration message indicating that the Memory
- Controller Chip has been found and attached to the main processor
- bus.</dd>
- <dt>memc0: Correctable error on CPU read access to 0x12345678.</dt>
- <dd>This indicates that an MCECC memory controller detected and corrected a
- single bit error in one of the DRAM banks. There are a few variations on
- the message where &quot;CPU&quot; can be replaced with &quot;Peripheral
- Device&quot; or &quot;Scrubber&quot;, and &quot;read&quot; can be
- substituted for &quot;write&quot;. This message is followed by some more
- details which can help pin-point the error...</dd>
- <dt>memc0: ECC Syndrome 0x23 (DRAM Bank C, Bit#16).</dt>
- <dd>Pin-points exactly where the error occurred.</dd>
- <dt>memc0: Uncorrectable error on CPU read access to 0x12345678.</dt>
- <dd>Errors like this have the potential to corrupt data. As such, it is likely
- the system will panic very soon afterwards.</dd>
-</dl>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">mvme68k/mainbus(4)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
-<p class="Pp">The <code class="Nm">memc</code> driver does not yet fully support
- the MEMC040 (Parity) version of the device.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">February 17, 2017</td>
- <td class="foot-os">NetBSD 10.1</td>
- </tr>
-</table>