/[gxemul]/trunk/doc/intro.html
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 33 by dpavlin, Mon Oct 8 16:20:58 2007 UTC revision 34 by dpavlin, Mon Oct 8 16:21:17 2007 UTC
# Line 10  Line 10 
10    
11  <!--  <!--
12    
13  $Id: intro.html,v 1.100 2006/11/04 06:40:20 debug Exp $  $Id: intro.html,v 1.106 2007/02/18 09:19:47 debug Exp $
14    
15  Copyright (C) 2003-2006  Anders Gavare.  All rights reserved.  Copyright (C) 2003-2007  Anders Gavare.  All rights reserved.
16    
17  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
18  modification, are permitted provided that the following conditions are met:  modification, are permitted provided that the following conditions are met:
# Line 95  even actual ROM images. A couple of diff Line 95  even actual ROM images. A couple of diff
95    
96  <p>If you do not have a kernel as a separate file, but you have a bootable  <p>If you do not have a kernel as a separate file, but you have a bootable
97  disk image, then it is sometimes possible to boot directly from that  disk image, then it is sometimes possible to boot directly from that
98  image. (This works for example with DECstation emulation, or when booting  image. (This works for example with DECstation emulation, Dreamcast
99  from ISO9660 CDROM images.)  emulation, or when booting from generic ISO9660 CDROM images if the
100    kernel is included in the image as a plain file.)
101    
102  <p>Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli  <p>Thanks to (in no specific order) Joachim Buss, Olivier Houchard, Juli
103  Mallett, Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander  Mallett, Juan Romero Pardines, Alec Voropay, Göran Weinholt, Alexander
# Line 219  The architectures that are emulated well Line 220  The architectures that are emulated well
220  guest operating system run (per architecture) are ARM, MIPS, PowerPC,  guest operating system run (per architecture) are ARM, MIPS, PowerPC,
221  and SuperH.  and SuperH.
222    
223    <p>Please read the page about <a href="guestoses.html">guest operating
224    systems</a> for more information about the machines and operating systems
225    that can be considered "working" in the emulator.
226    
227    
228    
229    
# Line 231  and SuperH. Line 236  and SuperH.
236  GXemul should compile and run on any modern host architecture (64-bit or  GXemul should compile and run on any modern host architecture (64-bit or
237  32-bit word-length).  32-bit word-length).
238    
239  <p>(The dynamic translation engine translates into an intermediate  <p>Note: The dynamic translation engine does <i>not</i> require backends
240  representation, but not currently into native code. This means that there  for native code generation to be written for each individual host
241  is no need for per-host architecture backend code.)  architecture; the "intermediate representation" that the dyntrans system
242    uses can be executed on any host architecture.
243    
244    
245    
# Line 424  number of executed instructions, etc. Wh Line 430  number of executed instructions, etc. Wh
430  translations are invalidated, and replaced by normal instruction calls  translations are invalidated, and replaced by normal instruction calls
431  (one per emulated instruction).  (one per emulated instruction).
432    
433  <p><b>Native Code Back-ends: (not in this release)</b>  <p><b>Native Code Back-ends:</b>
434    
435  <p>In theory, it will be possible to implement native code generation  <p>In theory, it will be possible to implement native code generation,
436  (similar to what is used in high-performance emulators such as QEMU),  similar to what is used in high-performance emulators such as QEMU,
437  as long as that generated code abides to the C ABI on the host, but  as long as that generated code abides to the C ABI on the host.
438  for now I wanted to make sure that GXemul works without such native  
439  code back-ends. For this reason, since release 0.4.0, GXemul is  <p>However, since I wanted to make sure that GXemul works without such
440  completely free of native code back-ends.  native code back-ends, there are no implemented backends in this release.
441    
442    <p>(There is a place-holder in the source code for native code generation,
443    which can be used for experiments, but it does not contain any working
444    code at the moment.)
445    
446    
447    
# Line 495  are emulated well enough to run at least Line 505  are emulated well enough to run at least
505      <li><b>Acer Pica-61</b> (<a href="guestoses.html#netbsdarcinstall">NetBSD/arc</a>)      <li><b>Acer Pica-61</b> (<a href="guestoses.html#netbsdarcinstall">NetBSD/arc</a>)
506      <li><b>NEC MobilePro 770, 780, 800, 880</b> (<a href="guestoses.html#netbsdhpcmipsinstall">NetBSD/hpcmips</a>)      <li><b>NEC MobilePro 770, 780, 800, 880</b> (<a href="guestoses.html#netbsdhpcmipsinstall">NetBSD/hpcmips</a>)
507      <li><b>Cobalt</b> (<a href="guestoses.html#netbsdcobaltinstall">NetBSD/cobalt</a>)      <li><b>Cobalt</b> (<a href="guestoses.html#netbsdcobaltinstall">NetBSD/cobalt</a>)
508      <li><b>Malta</b> (<a href="guestoses.html#netbsdevbmipsinstall">NetBSD/evbmips</a>)      <li><b>Malta</b> (<a href="guestoses.html#netbsdevbmipsinstall">NetBSD/evbmips</a>, Linux/Malta <font color="#0000e0">(<super>*1</super>)</font>)
509      <li><b>Algorithmics P5064</b> (<a href="guestoses.html#netbsdalgorinstall">NetBSD/algor</a>)      <li><b>Algorithmics P5064</b> (<a href="guestoses.html#netbsdalgorinstall">NetBSD/algor</a>)
510      <li><b>SGI O2 (aka IP32)</b> <font color="#0000e0">(<super>*1</super>)</font>      <li><b>SGI O2 (aka IP32)</b> <font color="#0000e0">(<super>*2</super>)</font>
511          (<a href="guestoses.html#netbsdsgimips">NetBSD/sgi</a>)          (<a href="guestoses.html#netbsdsgimips">NetBSD/sgi</a>)
512    </ul>    </ul>
513    <p>    <p>
514    <li><b><u>PowerPC</u></b>    <li><b><u>PowerPC</u></b>
515    <ul>    <ul>
516      <li><b>IBM 6050/6070 (PReP, PowerPC Reference Platform)</b> (<a href="guestoses.html#netbsdprepinstall">NetBSD/prep</a>)      <li><b>IBM 6050/6070 (PReP, PowerPC Reference Platform)</b> (<a href="guestoses.html#netbsdprepinstall">NetBSD/prep</a>)
517        <li><b>MacPPC (generic "G4" Macintosh)</b> (<a href="guestoses.html#netbsdmacppcinstall">NetBSD/macppc</a>)
518    </ul>    </ul>
519    <p>    <p>
520    <li><b><u>SuperH</u></b>    <li><b><u>SuperH</u></b>
521    <ul>    <ul>
522      <li><b>Sega Dreamcast</b>      <li><b>Sega Dreamcast</b> (<a href="dreamcast.html#netbsd_generic_md">NetBSD/dreamcast</a>)
         <font color="#0000e0">(<super>*2</super>)</font>  
         (<a href="guestoses.html#netbsddreamcast">NetBSD/dreamcast</a>)  
523    </ul>    </ul>
524  </ul>  </ul>
525    
526  <p>  <p>
527  <small><font color="#0000e0">(<super>*1</super>)</font> =  <small><font color="#0000e0">(<super>*1</super>)</font> =
528  Enough for root-on-nfs, but not for disk boot.</small>  Linux/Malta may be run as a guest OS, however I have not yet found any stable
529    URL to pre-compiled Linux/Malta kernels. Thus, Linux/Malta emulation is not
530    tested for every release of the emulator; sometimes it works, sometimes
531    it doesn't.</small>
532    
533  <br><small><font color="#0000e0">(<super>*2</super>)</font> =  <br><small><font color="#0000e0">(<super>*2</super>)</font> =
534  Only enough to reach ramdisk userland; no root-on-nfs yet.</small>  SGI O2 emulation is enough for root-on-nfs, but not for disk boot.</small>
535    
536    
537  <p>There is code in GXemul for emulation of many other machine types; the  <p>There is code in GXemul for emulation of many other machine types; the
538  degree to which these work range from almost being able to run a complete  degree to which these work range from almost being able to run a complete

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