/[gxemul]/trunk/doc/dreamcast.html
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Mon Oct 8 16:21:53 2007 UTC (16 years, 6 months ago) by dpavlin
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++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1515 2007/04/14 05:39:46 debug Exp $
20070324	Adding a "--debug" option to the configure script, to disable
		optimizations in unstable development builds.
		Moving out SCSI-specific stuff from diskimage.c into a new
		diskimage_scsicmd.c.
		Applying Hĺvard Eidnes' patch for SCSICDROM_READ_DISKINFO and
		SCSICDROM_READ_TRACKINFO. (Not really tested yet.)
		Implementing disk image "overlays" (to allow simple roll-back
		to previous disk state). Adding a 'V' disk flag for this, and
		updating the man page and misc.html.
20070325	Stability fix to cpu_dyntrans.c, when multiple physical pages
		share the same initial table entry. (The ppp == NULL check
		should be physpage_ofs == 0.) Bug found by analysing GXemul
		against a version patched for Godson.
		Fixing a second occurance of the same problem (also in
		cpu_dyntrans.c).
		Fixing a MAJOR physical page leak in cpu_dyntrans.c; pages
		weren't _added_ to the set of translated pages, they _replaced_
		all previous pages. It's amazing that this bug has been able
		to live for this long. (Triggered when emulating >128MB RAM.)
20070326	Removing the GDB debugging stub support; it was too hackish
		and ugly.
20070328	Moving around some native code generation skeleton code.
20070329	The -lm check in the configure script now also checks for sin()
		in addition to sqrt(). (Thanks to Nigel Horne for noticing that
		sqrt was not enough on Fedora Core 6.) (Not verified yet.)
20070330	Fixing an indexing bug in dev_sh4.c, found by using gcc version
		4.3.0 20070323.
20070331	Some more experimentation with native code generation.
20070404	Attempting to fix some more SH4 SCIF interrupt bugs; rewriting
		the SH interrupt assertion/deassertion code somewhat.
20070410	Splitting src/file.c into separate files in src/file/.
		Cleanup: Removing the dummy TS7200, Walnut, PB1000, and
		Meshcube emulation modes, and dev_epcom and dev_au1x00.
		Removing the experimental CHIP8/RCA180x code; it wasn't really
		working much lately, anyway. It was fun while it lasted.
		Also removing the experimental Transputer CPU support.
20070412	Moving the section about how the dynamic translation system
		works from intro.html to a separate translation.html file.
		Minor SH fixes; attempting to get OpenBSD/landisk to run
		without randomly bugging out, but no success yet.
20070413	SH SCI (serial bit interface) should now work together with a
		(new) RS5C313 clock device (for Landisk emulation).
20070414	Moving Redhat/MIPS down from supported to experimental, in
		guestoses.html.
		Preparing for a new release; doing some regression testing etc.

==============  RELEASE 0.4.5  ==============


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 38 $Id: dreamcast.html,v 1.12 2007/04/04 19:58:47 debug Exp $
14 dpavlin 34
15     Copyright (C) 2006-2007 Anders Gavare. All rights reserved.
16    
17     Redistribution and use in source and binary forms, with or without
18     modification, are permitted provided that the following conditions are met:
19    
20     1. Redistributions of source code must retain the above copyright
21     notice, this list of conditions and the following disclaimer.
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
26     derived from this software without specific prior written permission.
27    
28     THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
29     ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31     ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
32     FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34     OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37     OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 dpavlin 38 <p>(It seems that this specific iso image was built using instructions
182     from <a href="http://www.anytux.org/doc.php?doc_id=1">http://www.anytux.org/doc.php?doc_id=1</a>.)
183 dpavlin 34
184    
185    
186    
187    
188    
189    
190    
191     <p><br>
192    
193    
194    
195     </body>
196     </html>
197    

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