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<sect2 arch="powerpc"><title>CPU, Main Boards, and Video Support</title>
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<para>
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There are four major supported <emphasis>&architecture;</emphasis>
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subarchitectures: PMac (Power-Macintosh), PReP, APUS (Amiga Power-UP
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System), and CHRP machines. Each subarchitecture has its own boot
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methods. In addition, there are four different kernel flavours,
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supporting different CPU variants.
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</para><para>
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Ports to other <emphasis>&architecture;</emphasis> architectures, such
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as the Be-Box and MBX architecture, are underway but not yet supported
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by Debian. We may have a 64-bit port in the future.
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</para>
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<sect3><title>Kernel Flavours</title>
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<para>
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There are four flavours of the powerpc kernel in Debian, based on the
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CPU type:
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<variablelist>
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<varlistentry>
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<term>powerpc</term>
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<listitem><para>
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Most systems use this kernel flavour, which supports the PowerPC 601,
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603, 604, 740, 750, and 7400 processors. All Apple Power Macintosh
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systems up to and including the G4 use one of these processors.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>power3</term>
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<listitem><para>
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The POWER3 processor is used in older IBM 64-bit server systems: known
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models include the IntelliStation POWER Model 265, the pSeries 610 and
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640, and the RS/6000 7044-170, 7044-260, and 7044-270.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>power4</term>
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<listitem><para>
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The POWER4 processor is used in more recent IBM 64-bit server systems:
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known models include the pSeries 615, 630, 650, 655, 670, and 690.
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</para><para>
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The Apple G5 is also based on the POWER4 architecture, and uses this
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kernel flavour.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term>apus</term>
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<listitem><para>
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This kernel flavour supports the Amiga Power-UP System.
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</para></listitem>
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</varlistentry>
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</variablelist>
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</para>
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</sect3>
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<sect3><title>Power Macintosh (pmac) subarchitecture</title>
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<para>
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Apple (and briefly a few other manufacturers — Power Computing, for
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example) makes a series of Macintosh computers based on the PowerPC
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processor. For purposes of architecture support, they are categorized
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as NuBus, OldWorld PCI, and NewWorld.
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</para><para>
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Macintosh computers using the 680x0 series of processors are not in
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the PowerPC family but are instead m68k machines. Those models start
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with `Mac II' or have a 3-digit model number such as Centris 650
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or Quadra 950. Apple's pre-iMac PowerPC model numbers have four digits.
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</para><para>
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NuBus systems are not currently supported by debian/powerpc. The
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monolithic Linux/PPC kernel architecture does not have support for
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these machines; instead, one must use the MkLinux Mach microkernel,
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which Debian does not yet support. These include the following:
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<itemizedlist>
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<listitem><para>
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Power Macintosh 6100, 7100, 8100
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</para></listitem>
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<listitem><para>
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Performa 5200, 6200, 6300
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</para></listitem>
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<listitem><para>
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Powerbook 1400, 2300, and 5300
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</para></listitem>
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<listitem><para>
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Workgroup Server 6150, 8150, 9150
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</para></listitem>
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</itemizedlist>
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A linux kernel for these machines and limited support is available at
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<ulink url="http://nubus-pmac.sourceforge.net/"></ulink>
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</para><para>
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OldWorld systems are most Power Macintoshes with a floppy drive and a
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PCI bus. Most 603, 603e, 604, and 604e based Power Macintoshes are
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OldWorld machines. The beige colored G3 systems are also OldWorld.
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</para><para>
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The so called NewWorld PowerMacs are any PowerMacs in translucent
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colored plastic cases. That includes all iMacs, iBooks, G4 systems,
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blue colored G3 systems, and most PowerBooks manufactured in and after
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1999. The NewWorld PowerMacs are also known for using the `ROM in RAM'
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system for MacOS, and were manufactured from mid-1998 onwards.
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</para><para>
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Specifications for Apple hardware are available at
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<ulink url="http://www.info.apple.com/support/applespec.html">AppleSpec</ulink>,
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and, for older hardware,
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<ulink url="http://www.info.apple.com/support/applespec.legacy/index.html">AppleSpec Legacy</ulink>.
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</para><para>
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<informaltable>
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<tgroup cols="3">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<colspec colname="c3"/>
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<thead>
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<row>
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<entry namest="c1" nameend="c2">Model Name/Number</entry>
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<entry>Generation</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 morerows="22">Apple</entry>
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<entry>iMac Bondi Blue, 5 Flavors, Slot Loading</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>iMac Summer 2000, Early 2001</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>iMac G5</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>iBook, iBook SE, iBook Dual USB</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>iBook2</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>iBook G4</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Power Macintosh Blue and White (B&W) G3</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Power Macintosh G4 PCI, AGP, Cube</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Power Macintosh G4 Gigabit Ethernet</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Power Macintosh G4 Digital Audio, Quicksilver</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Power Macintosh G5</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>PowerBook G3 FireWire Pismo (2000)</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>PowerBook G3 Lombard (1999)</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>PowerBook G4 Titanium</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>PowerBook G4 Aluminum</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Xserve G5</entry>
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<entry>NewWorld</entry>
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</row><row>
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<entry>Performa 4400, 54xx, 5500</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Performa 6360, 6400, 6500</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh 4400, 5400</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh 7200, 7300, 7500, 7600</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh 8200, 8500, 8600</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh 9500, 9600</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh (Beige) G3 Minitower</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Power Macintosh (Beige) Desktop, All-in-One</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>PowerBook 2400, 3400, 3500</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>PowerBook G3 Wallstreet (1998)</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Twentieth Anniversary Macintosh</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>Workgroup Server 7250, 7350, 8550, 9650, G3</entry>
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<entry>OldWorld</entry>
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</row>
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<row>
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<entry morerows="1">Power Computing</entry>
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<entry>PowerBase, PowerTower / Pro, PowerWave</entry>
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<entry>OldWorld</entry>
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</row><row>
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<entry>PowerCenter / Pro, PowerCurve</entry>
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<entry>OldWorld</entry>
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</row>
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<row>
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<entry>UMAX</entry>
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<entry>C500, C600, J700, S900</entry>
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<entry>OldWorld</entry>
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</row>
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<row>
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<entry>APS</entry>
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<entry>APS Tech M*Power 604e/2000</entry>
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<entry>OldWorld</entry>
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</row>
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<row>
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<entry>Motorola</entry>
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<entry>Starmax 3000, 4000, 5000, 5500</entry>
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<entry>OldWorld</entry>
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</row>
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</tbody></tgroup></informaltable>
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</para>
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</sect3>
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<sect3><title>PReP subarchitecture</title>
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<para>
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<informaltable>
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<tgroup cols="2">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<thead>
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<row>
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<entry namest="c1" nameend="c2">Model Name/Number</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 morerows="4">Motorola</entry>
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<entry>Firepower, PowerStack Series E, PowerStack II</entry>
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</row><row>
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<entry>MPC 7xx, 8xx</entry>
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</row><row>
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<entry>MTX, MTX+</entry>
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</row><row>
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<entry>MVME2300(SC)/24xx/26xx/27xx/36xx/46xx</entry>
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</row><row>
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<entry>MCP(N)750</entry>
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</row>
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<row>
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<entry morerows="3">IBM RS/6000</entry>
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<entry>40P, 43P</entry>
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</row><row>
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<entry>Power 830/850/860 (6070, 6050)</entry>
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</row><row>
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<entry>6030, 7025, 7043</entry>
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</row><row>
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<entry>p640</entry>
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</row>
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</tbody></tgroup></informaltable>
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</para>
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</sect3>
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<sect3><title>CHRP subarchitecture</title>
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<para>
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<informaltable>
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<tgroup cols="2">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<thead>
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<row>
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<entry namest="c1" nameend="c2">Model Name/Number</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>IBM RS/6000</entry>
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<entry>B50, 43P-150, 44P</entry>
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</row>
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<row>
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<entry>Genesi</entry>
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<entry>Pegasos I, Pegasos II</entry>
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</row>
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</tbody></tgroup></informaltable>
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</para>
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</sect3>
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<sect3><title>APUS subarchitecture</title>
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<para>
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<informaltable>
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<tgroup cols="2">
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<colspec colname="c1"/>
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<colspec colname="c2"/>
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<thead>
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<row>
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<entry namest="c1" nameend="c2">Model Name/Number</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>Amiga Power-UP Systems (APUS)</entry>
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<entry>A1200, A3000, A4000</entry>
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</row>
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</tbody></tgroup></informaltable>
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</para>
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</sect3>
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</sect2>
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