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<?xml version="1.0" encoding="UTF-8"?>
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<title>GXemul: NetWinder emulation</title>
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<h1>GXemul: NetWinder emulation</h1>
<p>
<a href="./">Back to the index.</a>
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<p>The NetWinder emulation mode is working well enough to run
<a href="#netbsdnetwinderinstall">NetBSD/netwinder</a>.</p>
<p><br>
<a name="netbsdnetwinderinstall"></a>
<h3>NetBSD/netwinder:</h3>
<p>It is possible to run <a
href="http://www.netbsd.org/ports/netwinder/">NetBSD/netwinder</a>
in GXemul.
<p>
<a href="20060724-netbsd-netwinder-1.png"><img src="20060724-netbsd-netwinder-1_small.png"></a>
<a href="20060724-netbsd-netwinder-2.png"><img src="20060724-netbsd-netwinder-2_small.png"></a>
<p>There is no INSTALL ramdisk kernel, so one way to install the
NetBSD/netwinder distribution onto a disk image is to install the files
using another (emulated) machine. The following instructions will let you
install the NetBSD/netwinder distribution onto a disk image, from an
emulated DECstation 3MAX machine:
<p>
<ol>
<li>Download a NetBSD/pmax (DECstation) install RAMDISK kernel:<pre>
<a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/pmax/binary/kernel/netbsd-INSTALL.gz">ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/pmax/binary/kernel/netbsd-INSTALL.gz</a>
</pre>
<p>
<li>Create an empty harddisk image, which will be the disk image
that you will install NetBSD onto:<pre>
<b>dd if=/dev/zero of=nbsd_netwinder.img bs=1024 count=1 seek=999000</b>
</pre>
<li>Download the generic kernel and the 3.1 ISO image:<pre>
<a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/netwinder/binary/kernel/netbsd-GENERIC.gz">ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/netwinder/binary/kernel/netbsd-GENERIC.gz</a>
<a href="ftp://ftp.netbsd.org/pub/NetBSD/iso/3.1/netwindercd-3.1.iso">ftp://ftp.netbsd.org/pub/NetBSD/iso/3.1/netwindercd-3.1.iso</a>
</pre>
<p>
<li>Start the emulated DECstation machine like this:<pre>
<b>gxemul -e 3max -d nbsd_netwinder.img -d netwindercd-3.1.iso netbsd-INSTALL.gz</b>
</pre>
<li>At the <tt>Terminal type? [rcons]</tt> prompt, type <b>CTRL-B</b>
to simulate a CTRL-C sent to NetBSD/pmax. Then execute the following commands:
<p><table border="0"><tr><td><tt> </tt></td><td><pre>
<b>newfs /dev/sd0c
mount /dev/cd0c /mnt
mkdir /mnt2; mount /dev/sd0c /mnt2
cd /mnt2; sh
for a in /mnt/*/binary/sets/*.tgz; do echo $a; tar zxfp $a; done
exit
cd dev; sh ./MAKEDEV all; cd ../etc
echo rc_configured=YES >> rc.conf
echo "/dev/wd0c / ffs rw 1 1" > fstab
cd /; umount /mnt; umount /mnt2; halt</b>
</pre></td></tr></table>
</ol>
<p>NetBSD/netwinder is now installed on the disk image. The following command
line can be used to start NetBSD/netwinder:<pre>
<b>gxemul -X -E netwinder -d nbsd_netwinder.img netbsd-GENERIC.gz</b>
</pre>
<p>This will result in a 1024x768 framebuffer. Add <tt>-Y2</tt> to the
command line if you want to scale it down to 512x384.
<p>Note: The installation instructions above create a filesystem
<i>without</i> a disklabel, so there is only one ffs partition and no
swap. You will need to enter the following things when booting with the
generic kernel:<pre>
root device (default wd0a): <b>wd0c</b>
dump device (default wd0b): <i>(just press enter)</i>
file system (default generic): <i>(just press enter)</i>
init path (default /sbin/init): <i>(just press enter)</i>
</pre>
<p>Known bugs/problems:
<ul>
<li>There is a long delay when starting up NetBSD/netwinder
(several seconds even on a very fast host machine),
so you need to be patient.
<li>There is a minor bug in the keyboard device, so you need to
press a key (any key) before typing wd0c.
<li>When halting/rebooting NetBSD/netwinder, the emulator
prints a message saying something about an internal
error. This doesn't matter; ignore the message.
</ul>
<p><br>
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