/[gxemul]/trunk/RELEASE
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 34 by dpavlin, Mon Oct 8 16:21:17 2007 UTC revision 40 by dpavlin, Mon Oct 8 16:22:11 2007 UTC
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1  Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.4  Release notes for Gavare's eXperimental Emulator (GXemul), 0.4.5.1
2  ================================================================  ==================================================================
3    
4  Copyright (C) 2003-2007  Anders Gavare.  Copyright (C) 2003-2007  Anders Gavare.
5    
# Line 9  emulation modes are available. In some m Line 9  emulation modes are available. In some m
9  hardware components are emulated well enough to let unmodified operating  hardware components are emulated well enough to let unmodified operating
10  systems (e.g. NetBSD) run as if they were running on a real machine.  systems (e.g. NetBSD) run as if they were running on a real machine.
11    
12  Processors (ARM, MIPS, PowerPC, SuperH) are emulated using dynamic  Processors (ARM, MIPS, PowerPC, and SuperH) are emulated using dynamic
13  translation. Unlike some other dynamically translating emulators, GXemul  translation. Unlike some other dynamically translating emulators, GXemul
14  does not need to generate native code, only a "runnable intermediate  does not need to generate native code, only a "runnable intermediate
15  representation", and will thus run on any host architecture.  representation", and will thus run on any host architecture.
# Line 19  be regarded as "working" in GXemul. The Line 19  be regarded as "working" in GXemul. The
19  systems are probably NetBSD/pmax and NetBSD/cats.  systems are probably NetBSD/pmax and NetBSD/cats.
20    
21    
22  Changes between release 0.4.3 and 0.4.4 include, among other things:  The changes between release 0.4.4.1 and 0.4.5 include, among other things:
23    
24      o)  The interrupt subsystem has been redesigned. This means two things:      o)  Initial support for "disk overlays" has been implemented. This
25            enables e.g. simple roll-back of emulated disk contents to a
26            previous state.
27    
28            x)  Internal code cleanup, which makes the whole emulator more      o)  Dyntrans bug fixes; code translations on physical addresses that
29                maintainable. Instead of using magically encoded integers          were offset a multiple of 128 MB from each other could either
30                for interrupts, strings are now used. These strings are in          cause weird bugs, or translation leaks (leading to unnecessary
31                the form of "paths", so that devices and busses can more          dyntrans cache overflows).
               easily be connected to other busses, devices, or CPUs.  
   
           x)  Some machine types which happened to work in release 0.4.3,  
               but were not listed in the documentation as working, may  
               have stopped working now. As always, the documentation should  
               indicate the combinations of machine modes and guest OSes that  
               are supposed to work.  
   
     o)  SuperH (SH4) emulation is now somewhat more stable, enough to let a  
         NetBSD/dreamcast Live CD be usable.  
   
     o)  PowerPC "G4" emulation is now stable enough to let NetBSD/macppc  
         run from a disk image. (Installing actually worked before, but the  
         NetBSD/macppc GENERIC kernel uses AltiVec instructions which were  
         not implemented correctly.)  
   
     o)  The PICA-61 (arc) and i80321 (evbarm) emulation modes now have their  
         timers fixed at 100 Hz. A hardcoded speed like this is very ugly, but  
         it is at least better than before (when the timer wasn't really  
         running at any specific speed at all).  
32    
33  Please read the HISTORY files for more details.      o)  Some cleanup: The GDB debugging stub support, some dummy machine
34            modes (TS7200, Walnut, PB1000, and Meshcube), and some dummy or
35            experimental CPUs (RCA180x and Transputer) have been removed, to
36            make the emulator slightly more maintainable.
37    
38    The changes between release 0.4.5 and 0.4.5.1 include, among other things:
39    
40        o)  OpenBSD/landisk has now had its first release (4.1, 2007-05-01).
41            Landisk emulation is now stable enough to allow OpenBSD/landisk
42            to be installed onto a disk image, and run from it.
43    
44        o)  Finally found and fixed an old bug in the address to symbol name
45            lookup mechanism, which caused some symbols to be missed. Debug
46            output with -t or -i should now show all symbols.
47    
48    Please read the HISTORY file for more details.
49    
50    
51  Files included in this release are:  Files included in this release are:
# Line 147  them like this is in order: Line 144  them like this is in order:
144    
145      This product includes software developed by Marcus Comstedt.      This product includes software developed by Marcus Comstedt.
146    
147        This product includes software developed by Bill Paul.
148    
149  Also, src/include/alpha_rpb.h requires the following:  Also, src/include/alpha_rpb.h requires the following:
150    
151      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.      Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
# Line 165  or reuse code. Line 164  or reuse code.
164    
165    
166  If you have found GXemul useful in some way, or feel like sending me comments  If you have found GXemul useful in some way, or feel like sending me comments
167  or feedback in general, then mail me at anders(at)gavare.se.  or feedback in general, then mail me at anders(At)gavare.se.
168    
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