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