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<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE chapter SYSTEM "chapter.dtd">
<chapter>
<header>
<copyright>
<year>1997</year>
<year>2016</year>
<holder>Ericsson AB, All Rights Reserved</holder>
</copyright>
<legalnotice>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
The Initial Developer of the Original Code is Ericsson AB.
</legalnotice>
<title>VME Bus Driver</title>
<prepared>Fredrik Tillman</prepared>
<responsible></responsible>
<docno>ETX/B/SFP/TILLMAN:96-002</docno>
<approved></approved>
<checked></checked>
<date>1996-10-29</date>
<rev>PA1</rev>
<file>vme_problems.sgml</file>
</header>
<p>This chapter describes the OS specific parts of OTP which relate to
the VME Bus Driver.
</p>
<section>
<title>Installation Problems</title>
<p>The hardware watchdog timer which is controlled by the
<c>heart</c> port program requires the <c>FORCEvme</c> package,
which contains the VME bus driver, to be installed. This driver,
however, might clash with the Sun <c>mcp</c> driver and cause
the system to completely refuse to boot. To cure this problem,
the following lines should be added to <c>/etc/system</c>:
</p>
<list type="bulleted">
<item><c>exclude: drv/mcp</c></item>
<item><c>exclude: drv/mcpzsa</c></item>
<item><c>exclude: drv/mcpp</c></item>
</list>
<warning>
<p>It is recommended that these lines be added to avoid the
clash described, which may make it completely impossible to boot
the system.</p>
</warning>
</section>
</chapter>
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