--- trunk/doc/guestoses.html	2007/10/08 16:20:18	27
+++ trunk/doc/guestoses.html	2007/10/08 16:20:26	28
@@ -10,7 +10,7 @@
 
 <!--
 
-$Id: guestoses.html,v 1.149 2006/06/25 02:36:46 debug Exp $
+$Id: guestoses.html,v 1.157 2006/07/22 10:23:39 debug Exp $
 
 Copyright (C) 2003-2006  Anders Gavare.  All rights reserved.
 
@@ -98,6 +98,8 @@
   <li><a href="#openbsdsgiinstall">OpenBSD/sgi</a>
   <li><a href="#openbsdarcinstall">OpenBSD/arc 2.3</a>
   <li><a href="#debiancats">Debian GNU/Linux for CATS</a>
+  <li><a href="#linux_qemu_mips">Linux/QEMU_MIPS</a>
+  <li><a href="#windows_nt_mips">Windows NT/MIPS</a>
   <li><a href="#netbsdnetwinderinstall">NetBSD/netwinder 2.1</a>
   <li><a href="#netbsdmacppcinstall">NetBSD/macppc 3.0</a>
 </ul>
@@ -118,9 +120,11 @@
 <h3>NetBSD/pmax:</h3>
 
 <p><a href="http://www.netbsd.org/Ports/pmax/">NetBSD/pmax</a> was the
-first guest OS that could be installed onto a disk image in GXemul. The
-device emulation of the DECstation 5000/200 is reasonably complete; it
-should be enough to emulate a networked X-windows-capable workstation.
+first guest OS that could be
+<a href="http://mail-index.netbsd.org/port-pmax/2004/04/18/0000.html">installed</a>
+onto a disk image in GXemul. The device emulation of the DECstation
+5000/200 is reasonably complete; it should be enough to emulate a
+networked X-windows-capable workstation.
 
 <p>NetBSD/pmax 1.6.2 works perfectly with X out-of-the-box. Unfortunately,
 newer NetBSD releases have changed slightly, and nowadays X does not
@@ -372,7 +376,7 @@
 <ol start="1">
   <li>Create an empty harddisk image, which will be the root disk
 	that you will install NetBSD/hpcmips onto:<pre>
-	<b>dd if=/dev/zero of=nbsd_hpcmips.img bs=1024 count=1 seek=1990000</b>
+	<b>dd if=/dev/zero of=nbsd_hpcmips.img bs=1024 count=1 seek=999000</b>
 
 </pre>
   <li>Download the NetBSD/hpcmips 3.0 ISO image, and a generic kernel:<pre>
@@ -437,7 +441,7 @@
 <ol>
   <li>Create an empty harddisk image, which will be the disk image
 	that you will install NetBSD/cobalt onto:<pre>
-	<b>dd if=/dev/zero of=nbsd_cobalt.img bs=1024 count=1 seek=1999000</b>
+	<b>dd if=/dev/zero of=nbsd_cobalt.img bs=1024 count=1 seek=999000</b>
 
 </pre>
   <li>Download the generic kernel for Cobalt and the 2.1 ISO image:<pre>
@@ -494,8 +498,9 @@
 <a name="netbsdevbmipsinstall"></a>
 <h3>NetBSD/evbmips:</h3>
 
-<a href="http://www.netbsd.org/Ports/evbmips/">NetBSD/evbmips</a> can run
-in GXemul on an emulated Malta evaluation board (with a 5Kc or 4Kc CPU).
+<a href="http://www.netbsd.org/Ports/evbmips/">NetBSD/evbmips</a> can run 
+in GXemul on an emulated Malta evaluation board, with a 5Kc (MIPS64) or 
+4Kc (MIPS32) processor. 5Kc is the default.
 
 <p>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
@@ -1930,6 +1935,117 @@
 
 
 
+
+
+
+
+
+<p><br>
+<a name="linux_qemu_mips"></a>
+<h3>Linux/QEMU_MIPS:</h3>
+
+I've added a semi-bogus machine mode which tries to 
+mimic the MIPS machine mode used in Fabrice Bellard's
+<a href="http://fabrice.bellard.free.fr/qemu/">QEMU</a>.
+
+<p>Follow these steps to download and run the Linux/QEMU_MIPS test
+ramdisk kernel:
+
+<p><ol>
+  <li>Download <a href="http://fabrice.bellard.free.fr/qemu/mips-test-0.1.tar.gz">mips-test-0.1.tar.gz</a>
+	from <a href="http://fabrice.bellard.free.fr/qemu/download.html">http://fabrice.bellard.free.fr/qemu/download.html</a>,
+	and extract its contents (<tt>tar zxvf mips-test-0.1.tar.gz</tt>).
+  <p>
+  <li>Test it in GXemul using the following command line:<pre>
+	<b>gxemul -E qemu_mips -o 'console=ttyS0 root=/dev/ram
+		rd_start=0x80800000 rd_size=10000000 init=/bin/sh'
+		0x80800000:mips-test/initrd mips-test/vmlinux-r1</b>
+
+</pre>
+</ol>
+
+<p><i>"QEMU is a FAST! processor emulator"</i> according to <a
+href="http://fabrice.bellard.free.fr/qemu/qemu-doc.html">http://fabrice.bellard.free.fr/qemu/qemu-doc.html</a>.
+Sometimes QEMU is faster than GXemul, sometimes it is the other way
+around. A quick (and quite unfair) test on my laptop (1.8 GHz Turion ML32,
+I think, in AMD64 mode) comparing QEMU 0.8.1 installed as a binary package
+from FreeBSD ports with GXemul gave the following result:
+
+<p><pre>
+        <b>while true; do ls -l > /dev/null; echo -n .; done</b>
+        (80 x 36 dots)
+        QEMU 0.8.1:       13 min 48 sec
+        GXemul 20060711:   7 min 54 sec
+	GXemul 0.4.1:      4 min 59 sec
+
+	<b>while true; do /usr/bin/md5sum /usr/bin/* > /dev/null; echo -n .; done</b>
+        (80 dots)
+        QEMU 0.8.1:        2 min  9 sec
+        GXemul 20060711:   8 min 49 sec
+	GXemul 0.4.1:      6 min 54 sec
+
+        <b>while true; do grep hej lib/libtextwrap.so.1 > /dev/null; echo -n .; done</b>
+        (80 dots)
+        QEMU 0.8.1:       10 min  5 sec
+        GXemul 20060711:   3 min  8 sec
+	GXemul 0.4.1:      1 min 42 sec
+</pre>
+
+<p>The commands were run inside the emulators, using the ramdisk kernel
+mentioned above. (For GXemul, 2006-07-11 was the date when the QEMU_MIPS
+mode was added. Performance has since gotten a bit better in general, for 
+non-R3000 MIPS emulation.)
+
+
+
+
+
+
+
+
+<p><br>
+<a name="windows_nt_mips"></a>
+<h3>Windows NT/MIPS:</h3>
+
+Old versions of Windows NT could run on MIPS hardware, e.g.
+the PICA 61. It is theoretically possible that the emulation provided by
+GXemul some day could be stable/complete enough to emulate
+such hardware well enough to fool Windows NT into thinking
+that it is running on a real machine.
+<font color="#ff0000">IT DOES <b>NOT</b> WORK YET!</font>
+
+<p>Something like this would be done to install
+Windows NT onto a disk image:
+
+<ol>
+	<li>Put a "Windows NT 4.0 for MIPS" CDROM (or similar) into
+		your CDROM drive. (On FreeBSD systems, it is
+		usually called <tt>/dev/cd0c</tt> or similar. Change
+		that to whatever the CDROM is called on your system,
+		or the name of a raw .iso image. I have tried this
+		with the Swedish version, but it might work with
+		other versions too.)
+	<p>
+	<li>Create an empty harddisk image, which will be the disk image
+		that you will install Windows NT onto:<pre>
+	$ <b><tt>dd if=/dev/zero of=winnt_test.img bs=1024 count=1 seek=999000</tt></b>
+
+</pre>
+	<li>Run the ARC installer, to partition the disk image:<pre>
+	$ <b><tt>gxemul -X -e pica -d winnt_test.img -d bc6:/dev/cd0c -j MIPS\\ARCINST</tt></b>
+</pre>
+	Note that <tt>ARCINST</tt> <i>almost</i> works, but not quite.
+	<p>
+	<li>Run the SETUP program:<pre>
+	$ <b><tt>gxemul -X -e pica -d winnt_test.img -d bc6:/dev/cd0c -j MIPS\\SETUPLDR</tt></b>
+</pre>
+</ol>
+
+<p><tt>SETUPLDR</tt> manages to load some drivers from the cdrom,
+but then it crashes because of incomplete emulation of some hardware devices.
+
+
+