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<sect2 arch="mipsel"><title>CPU, Main Boards, and Video Support</title>
<para>
Debian on &arch-title; currently supports three subarchitectures:
<itemizedlist>
<listitem><para>
DECstation: various models of the DECstation are supported.
</para></listitem>
<listitem><para>
Cobalt Microserver: only MIPS based Cobalt machines are covered here.
This included the Cobalt Qube, RaQ, Qube2 and RaQ2, and the Gateway
Microserver.
</para></listitem>
<listitem><para>
Broadcom BCM91250A (SWARM): this is an ATX form factor evaluation board from
Broadcom based on their SiByte processor family.
</para></listitem>
</itemizedlist>
Complete information regarding supported mips/mipsel machines can be found
at the <ulink url="&url-linux-mips;">Linux-MIPS homepage</ulink>. In the
following, only the systems supported by the Debian installer will be
covered. If you are looking for support for other subarchitectures, please
contact the <ulink url="&url-list-subscribe;">
debian-&architecture; mailing list</ulink>.
</para>
<sect3><title>CPU/Machine types</title>
<para>
Currently only DECstations with R3000 and R4000/R4400 CPUs are
supported by the Debian installation system on little endian MIPS.
The Debian installation system works on the following machines:
</para><para>
<informaltable>
<tgroup cols="4">
<thead>
<row>
<entry>System Type</entry><entry>CPU</entry><entry>Code-name</entry>
<entry>Debian subarchitecture</entry>
</row>
</thead>
<tbody>
<row>
<entry>DECstation 5000/1xx</entry>
<entry>R3000</entry>
<entry>3MIN</entry>
<entry>r3k-kn02</entry>
</row><row>
<entry>DECstation 5000/150</entry>
<entry>R4000</entry>
<entry>3MIN</entry>
<entry>r4k-kn04</entry>
</row><row>
<entry>DECstation 5000/200</entry>
<entry>R3000</entry>
<entry>3MAX</entry>
<entry>r3k-kn02</entry>
</row><row>
<entry>DECstation 5000/240</entry>
<entry>R3000</entry>
<entry>3MAX+</entry>
<entry>r3k-kn02</entry>
</row><row>
<entry>DECstation 5000/260</entry>
<entry>R4400</entry>
<entry>3MAX+</entry>
<entry>r4k-kn04</entry>
</row><row>
<entry>Personal DECstation 5000/xx</entry>
<entry>R3000</entry>
<entry>Maxine</entry>
<entry>r3k-kn02</entry>
</row><row>
<entry>Personal DECstation 5000/50</entry>
<entry>R4000</entry>
<entry>Maxine</entry>
<entry>r4k-kn04</entry>
</row>
</tbody></tgroup></informaltable>
</para><para>
All Cobalt machines are supported which have a serial console (which is
needed for the installation).
</para><para>
The Broadcom BCM91250A evaluation board comes with an SB1250 chip with two
SB-1 cores which are supported in SMP mode by this installer.
</para>
</sect3>
<sect3><title>Supported console options</title>
<para>
Serial console is available on all supported DECstations (9600 bps,
8N1). For using serial console, you have to boot the installer image
with the <literal>console=ttyS</literal><replaceable>x</replaceable> kernel
parameter (with <replaceable>x</replaceable> being the number
of the serial port you have your terminal connected to — usually
<literal>2</literal>, but <literal>0</literal> for the Personal DECstations).
On 3MIN and 3MAX+ (DECstation 5000/1xx, 5000/240 and 5000/260) local console
is available with the PMAG-BA and the PMAGB-B graphics options.
</para><para>
If you have a Linux system to use as serial terminal, an easy way
is to run <command>cu</command><footnote>
<para>
In Woody this command was part of the <classname>uucp</classname> package,
but in later releases it is available as a separate package.
</para>
</footnote> on it. Example:
<informalexample><screen>
$ cu -l /dev/ttyS1 -s 9600
</screen></informalexample>
where the option <literal>-l</literal> (line) sets the serial port to use
and <literal>-s</literal> (speed) sets the speed for the connection (9600
bits per second).
</para><para>
Both Cobalt and Broadcom BCM91250A use 115200 bps.
</para>
</sect3>
</sect2>
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