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<html><head><title>Gavare's eXperimental Emulator: Dreamcast emulation</title> |
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<b>GXemul:</b></font> |
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<font color="#000000" size="6"><b>Dreamcast emulation</b> |
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$Id: dreamcast.html,v 1.16 2007/06/23 16:59:35 debug Exp $ |
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Copyright (C) 2006-2007 Anders Gavare. All rights reserved. |
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<a href="./">Back to the index</a> |
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<p><br> |
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<h2>Dreamcast emulation</h2> |
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<p> |
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<ul> |
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<li><a href="#intro">Introduction</a> |
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<li><a href="#netbsd_generic_md">NetBSD/dreamcast GENERIC_MD</a> |
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<li><a href="#netbsd_live_cd">NetBSD/dreamcast Live CD</a> |
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<li><a href="#linux_live_cd">Linux/dreamcast Live CD</a> |
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</ul> |
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<p><br> |
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<a name="intro"></a> |
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<h3>Introduction:</h3> |
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This page contains information about the <a |
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href="http://en.wikipedia.org/wiki/Dreamcast">Dreamcast</a> emulation mode |
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in GXemul. It's not a very long page, but I thought it would be best to |
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gather everything Dreamcast-specific in one place. |
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<p>My main goal with Dreamcast emulation is to let <a |
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href="http://www.netbsd.org/ports/dreamcast/">NetBSD/dreamcast</a> run, |
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similar to how it runs on a real machine. I am also experimenting with |
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other programs, such as Linux and simple demo programs that use |
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<a href="http://gamedev.allusion.net/softprj/kos/">KOS</a>, and |
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<a href="http://mc.pp.se/dc/sw.html">Marcus Comstedt's tutorial programs</a>. |
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These sometimes work to a certain degree. |
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<p>Games (especially commercial games) are very unlikely to run. |
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<p><br> |
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<a name="netbsd_generic_md"></a> |
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<h3>NetBSD/dreamcast GENERIC_MD:</h3> |
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<p>It is possible to run <a |
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href="http://www.netbsd.org/ports/dreamcast/">NetBSD/dreamcast</a> in |
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GXemul. A NetBSD ramdisk kernel can reach userland, however, no network |
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interface is emulated yet, so root-on-nfs is not possible. |
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<p> |
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<a href="20061029-netbsd-dreamcast.png"><img src="20061029-netbsd-dreamcast_small.png"></a> |
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<a href="20061104-netbsd-dreamcast-real.jpg"><img src="20061104-netbsd-dreamcast-real_small.png"></a> |
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<p>(The photo on the right shows NetBSD/dreamcast running both on a real |
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Dreamcast, and in the emulator.) |
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<p>Download the 3.1 kernel here:<pre> |
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<a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/dreamcast/binary/kernel/netbsd-GENERIC_MD.gz">ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/dreamcast/binary/kernel/netbsd-GENERIC_MD.gz</a> |
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</pre> |
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<p>Start NetBSD/dreamcast using the following command line:<pre> |
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<b>gxemul -XEdreamcast netbsd-GENERIC_MD.gz</b> |
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</pre> |
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<p><br> |
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<a name="netbsd_live_cd"></a> |
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<h3>NetBSD/dreamcast Live CD:</h3> |
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<p>According to <a href="http://mail-index.netbsd.org/port-dreamcast/2005/04/25/0000.html">http://mail-index.netbsd.org/port-dreamcast/2005/04/25/0000.html</a>, |
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Rui Paulo has made available a NetBSD/dreamcast Live CD. It can run in |
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GXemul: |
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<p> |
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<a href="20070128-netbsd-dreamcast-livecd-1.png"><img src="20070128-netbsd-dreamcast-livecd-1_small.png"></a> |
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<a href="20070128-netbsd-dreamcast-livecd-2.png"><img src="20070128-netbsd-dreamcast-livecd-2_small.png"></a> |
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<p>The image is available here:<pre> |
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<a href="http://netbsd.student.utwente.nl/rpaulo/">http://netbsd.student.utwente.nl/rpaulo/</a> |
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</pre> |
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<p><font color="#ff0000">NOTE (February 2007):</font> |
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The ISO image seems to have been removed from the server, |
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but you should be able to create one from scratch using |
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instructions available at various locations on the Internet. |
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<p>Only the ISO9660 filesystem image is needed:<pre> |
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<a href="http://netbsd.student.utwente.nl/rpaulo/livecd.raw.bz2">http://netbsd.student.utwente.nl/rpaulo/livecd.raw.bz2</a> |
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</pre> |
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Uncompress the CD image (using bunzip2), and type the following command |
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to attempt to boot directly from the image:<pre> |
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<b>gxemul -XEdreamcast -d co23965696:livecd.raw</b> |
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</pre> |
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(The <tt><b>c</b></tt> disk image option is necessary to treat the raw |
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file as a CDROM image, and the <tt><b>o</b></tt> part is needed because |
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the ISO9660 filesystem in the image is offset by 11702 sectors, i.e. 2048 |
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bytes each.) |
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<p>At the <b><tt>root device:</tt></b> prompt, type |
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<b><tt>gdrom0</tt></b>. For <b><tt>dump device</tt></b>, |
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<b><tt>file system</tt></b>, and <b><tt>init path</tt></b>, just press |
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Enter. |
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<p><br> |
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<a name="linux_live_cd"></a> |
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<h3>Linux/dreamcast Live CD:</h3> |
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<p> |
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<a href="20070308-linux-dreamcast-1.png"><img src="20070308-linux-dreamcast-1_small.png"></a> |
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<a href="20070308-linux-dreamcast-2.png"><img src="20070308-linux-dreamcast-2_small.png"></a> |
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<p>A Linux/dreamcast Live CD ISO image can be found here:<pre> |
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<a href="http://ftp.riken.go.jp/pub/misc/Japan/m17n.org/super-h/CD-R/lc2000.iso">http://ftp.riken.go.jp/pub/misc/Japan/m17n.org/super-h/CD-R/lc2000.iso</a> |
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</pre> |
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Once you have downloaded the ISO image, type the following command to |
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boot directly from the image:<pre> |
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<b>gxemul -XEdreamcast -d o23965696:lc2000.iso</b> |
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</pre> |
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<p>(It seems that this specific iso image was built using instructions |
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from <a href="http://www.anytux.org/doc.php?doc_id=1">http://www.anytux.org/doc.php?doc_id=1</a>.) |
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