/[gxemul]/trunk/doc/dreamcast.html
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Mon Oct 8 16:21:34 2007 UTC (16 years, 6 months ago) by dpavlin
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1497 2007/03/18 03:41:36 debug Exp $
20070224	Minor update to the initialization of the ns16550 in
		machine_walnut.c, to allow that machine type to boot with the
		new interrupt system (although it is still a dummy machine).
		Adding a wdc at 0x14000000 to machine_landisk.c, and fixing
		the SCIF serial interrupts of the SH4 cpu enough to get
		NetBSD/landisk booting from a disk image :-)  Adding a
		preliminary install instruction skeleton to guestoses.html.
20070306	Adding SH-IPL+G PROM emulation, and also passing the "end"
		symbol in r5 on bootup, for Landisk emulation. This is enough
		to get OpenBSD/landisk to install :)  Adding a preliminary
		install instruction skeleton to the documentation. SuperH
		emulation is still shaky, though :-/
20070307	Fixed a strangeness in memory_sh.c (read/write was never
		returned for any page). (Unknown whether this fixes any actual
		problems, though.)
20070308	dev_ram.c fix: invalidate code translations on writes to
		RAM, emulated as separate devices. Linux/dreamcast gets
		further in the boot process than before, but still bugs out
		in userland.
		Fixing bugs in the "stc.l gbr,@-rN" and "ldc.l @rN+,gbr" SuperH 
		instructions (they should NOT check the MD bit), allowing the
		Linux/dreamcast Live CD to reach userland correctly :-)
20070310	Changing the cpu name "Alpha" in src/useremul.c to "21364" to
		unbreak userland syscall emulation of FreeBSD/Alpha binaries.
20070314	Applying a patch from Michael Yaroslavtsev which fixes the
		previous Linux lib64 patch to the configure script.
20070315	Adding a (dummy) sun4v machine type, and SPARC T1 cpu type.
20070316	Creating a new directory, src/disk, and moving diskimage.c
		to it. Separating out bootblock loading stuff from emul.c into
		new files in src/disk.
		Adding some more SPARC registers.
20070318	Preparing/testing for a minirelease, 0.4.4.1.

==============  RELEASE 0.4.4.1  ==============
1 dpavlin 34 <html><head><title>Gavare's eXperimental Emulator:&nbsp;&nbsp;&nbsp;Dreamcast emulation</title>
2     <meta name="robots" content="noarchive,nofollow,noindex"></head>
3     <body bgcolor="#f8f8f8" text="#000000" link="#4040f0" vlink="#404040" alink="#ff0000">
4     <table border=0 width=100% bgcolor="#d0d0d0"><tr>
5     <td width=100% align=center valign=center><table border=0 width=100%><tr>
6     <td align="left" valign=center bgcolor="#d0efff"><font color="#6060e0" size="6">
7     <b>Gavare's eXperimental Emulator:</b></font><br>
8     <font color="#000000" size="6"><b>Dreamcast emulation</b>
9     </font></td></tr></table></td></tr></table><p>
10    
11     <!--
12    
13 dpavlin 36 $Id: dreamcast.html,v 1.11 2007/03/08 19:04:09 debug Exp $
14 dpavlin 34
15     Copyright (C) 2006-2007 Anders Gavare. All rights reserved.
16    
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18     modification, are permitted provided that the following conditions are met:
19    
20     1. Redistributions of source code must retain the above copyright
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22     2. Redistributions in binary form must reproduce the above copyright
23     notice, this list of conditions and the following disclaimer in the
24     documentation and/or other materials provided with the distribution.
25     3. The name of the author may not be used to endorse or promote products
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27    
28     THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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34     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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36     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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38     SUCH DAMAGE.
39    
40     -->
41    
42     <a href="./">Back to the index</a>
43    
44     <p><br>
45     <h2>Dreamcast emulation</h2>
46    
47     <p>
48     <ul>
49     <li><a href="#intro">Introduction</a>
50     <li><a href="#netbsd_generic_md">NetBSD/dreamcast GENERIC_MD</a>
51     <li><a href="#netbsd_live_cd">NetBSD/dreamcast Live CD</a>
52     <li><a href="#linux_live_cd">Linux/dreamcast Live CD</a>
53     </ul>
54    
55    
56    
57    
58    
59    
60     <p><br>
61     <a name="intro"></a>
62     <h3>Introduction:</h3>
63    
64     This page contains information about the Dreamcast emulation mode in
65     GXemul. It's not a very long page, but I thought it would be best to
66     gather everything Dreamcast-specific in one place.
67    
68     <p>My main goal with Dreamcast emulation is to let <a
69     href="http://www.netbsd.org/Ports/dreamcast/">NetBSD/dreamcast</a> run,
70     similar to how it runs on a real machine. I am also experimenting with
71     other programs, such as Linux and simple demo programs that use KOS, and
72     Marcus Comstedt's tutorial programs. These sometimes work to a certain
73     degree.
74    
75     <p>Games (especially commercial games) are very unlikely to run.
76    
77    
78    
79    
80    
81     <p><br>
82     <a name="netbsd_generic_md"></a>
83     <h3>NetBSD/dreamcast GENERIC_MD:</h3>
84    
85     <p>It is possible to run <a
86     href="http://www.netbsd.org/Ports/dreamcast/">NetBSD/dreamcast</a> in
87     GXemul. A NetBSD ramdisk kernel can reach userland, however, no network
88     interface is emulated yet, so root-on-nfs is not possible.
89    
90     <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
91     <a href="20061029-netbsd-dreamcast.png"><img src="20061029-netbsd-dreamcast_small.png"></a>
92     &nbsp;&nbsp;&nbsp;
93     <a href="20061104-netbsd-dreamcast-real.jpg"><img src="20061104-netbsd-dreamcast-real_small.png"></a>
94    
95     <p>(The photo on the right shows NetBSD/dreamcast running both on a real
96     Dreamcast, and in the emulator.)
97    
98     <p>Download the 3.1 kernel here:<pre>
99     <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>
100     </pre>
101    
102     <p>Start NetBSD/dreamcast using the following command line:<pre>
103     <b>gxemul -XEdreamcast netbsd-GENERIC_MD.gz</b>
104    
105     </pre>
106    
107    
108    
109    
110    
111    
112    
113    
114    
115     <p><br>
116     <a name="netbsd_live_cd"></a>
117     <h3>NetBSD/dreamcast Live CD:</h3>
118    
119     <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>,
120     Rui Paulo has made available a NetBSD/dreamcast Live CD. It can run in
121     GXemul:
122    
123     <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
124     <a href="20070128-netbsd-dreamcast-livecd-1.png"><img src="20070128-netbsd-dreamcast-livecd-1_small.png"></a>
125     &nbsp;&nbsp;&nbsp;
126     <a href="20070128-netbsd-dreamcast-livecd-2.png"><img src="20070128-netbsd-dreamcast-livecd-2_small.png"></a>
127    
128     <p>The image is available here:<pre>
129     <a href="http://netbsd.student.utwente.nl/rpaulo/">http://netbsd.student.utwente.nl/rpaulo/</a>
130     </pre>
131    
132 dpavlin 36 <p><font color="#ff0000">NOTE (February 2007):</font>
133     The ISO image seems to have been removed from the server,
134     but you should be able to create one from scratch using
135     instructions available at various locations on the Internet.
136    
137    
138 dpavlin 34 <p>Only the ISO9660 filesystem image is needed:<pre>
139     <a href="http://netbsd.student.utwente.nl/rpaulo/livecd.raw.bz2">http://netbsd.student.utwente.nl/rpaulo/livecd.raw.bz2</a>
140     </pre>
141    
142     Uncompress the CD image (using bunzip2), and type the following command
143     to attempt to boot directly from the image:<pre>
144     <b>gxemul -XEdreamcast -d co23965696:livecd.raw</b>
145     </pre>
146    
147     (The <tt><b>c</b></tt> disk image option is necessary to treat the raw
148     file as a CDROM image, and the <tt><b>o</b></tt> part is needed because
149     the ISO9660 filesystem in the image is offset by 11702 sectors, i.e. 2048
150     bytes each.)
151    
152     <p>At the <b><tt>root device:</tt></b> prompt, type
153     <b><tt>gdrom0</tt></b>. For <b><tt>dump device</tt></b>,
154     <b><tt>file system</tt></b>, and <b><tt>init path</tt></b>, just press
155     Enter.
156    
157    
158    
159    
160    
161    
162    
163     <p><br>
164     <a name="linux_live_cd"></a>
165     <h3>Linux/dreamcast Live CD:</h3>
166    
167 dpavlin 36 <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
168     <a href="20070308-linux-dreamcast-1.png"><img src="20070308-linux-dreamcast-1_small.png"></a>
169     &nbsp;&nbsp;&nbsp;
170     <a href="20070308-linux-dreamcast-2.png"><img src="20070308-linux-dreamcast-2_small.png"></a>
171    
172     <p>A Linux/dreamcast Live CD ISO image can be found here:<pre>
173 dpavlin 34 <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>
174     </pre>
175    
176     Once you have downloaded the ISO image, type the following command to
177 dpavlin 36 boot directly from the image:<pre>
178 dpavlin 34 <b>gxemul -XEdreamcast -d co23965696:lc2000.iso</b>
179     </pre>
180    
181    
182    
183    
184    
185    
186    
187    
188    
189     <p><br>
190    
191    
192    
193     </body>
194     </html>
195    
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