/[gxemul]/trunk/RELEASE
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Revision 6 - (show annotations)
Mon Oct 8 16:18:11 2007 UTC (13 years, 3 months ago) by dpavlin
File size: 6103 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.772 2005/06/04 12:02:16 debug Exp $
20050428	Disabling the "-fmove-all-movables" option in the configure
		script, because it causes the compile to fail on OpenBSD/sgi.
20050502	Minor updates.
20050503	Removing the WRT54G mode (it was bogus anyway), and adding a
		comment about Windows NT for MIPS in doc/experiments.html.
		Minor updates to the x86 instruction decoding.
20050504	Adding some more x86 instructions.
		Adding support for reading files from ISO9660 CDROMs (including
		gzipped files). It's an ugly hack, but it seems to work.
		Various other minor updates (dev_vga.c, pc_bios.c etc).
20050505	Some more x86-related updates.
		Beginning (what I hope will be) a major code cleanup phase.
		"bootris" (an x86 bootsector) runs :-)
20050506	Adding some more x86 instructions.
20050507	tmpnam => mkstemp.
		Working on a hack to allow VGA charcells to be shown even when
		not running with X11.
		Adding more x86 instructions.
20050508	x86 32-bit SIB addressing fix, and more instructions.
20050509	Adding more x86 instructions.
20050510	Minor documentation updates, and other updates (x86 stuff etc.)
20050511	More x86-related updates.
20050513	Various updates, mostly x86-related. (Trying to fix flag 
		calculation, factoring out the ugly shift/rotate code, and
		some other things.)
20050514	Adding support for loading some old i386 a.out executables.
		Finally beginning the cleanup of machine/PROM/bios dependant
		info.
		Some minor documentation updates.
		Trying to clean up ARCBIOS stuff a little.
20050515	Trying to make it possible to actually use more than one disk
		type per machine (floppy, ide, scsi).
		Trying to clean up the kbd vs PROM console stuff. (For PC and
		ARC emulation modes, mostly.)
		Beginning to add an 8259 interrupt controller, and connecting
		it to the x86 emulation.
20050516	The first x86 interrupts seem to work (keyboard stuff).
		Adding a 8253/8254 programmable interval timer skeleton.
		FreeDOS now reaches a command prompt and can be interacted
		with.
20050517	After some bugfixes, MS-DOS also (sometimes) reaches a
		command prompt now.
		Trying to fix the pckbc to work with MS-DOS' keyb.com, but no
		success yet.
20050518	Adding a simple 32-bit x86 MMU skeleton.
20050519	Some more work on the x86 stuff. (Beginning the work on paging,
		and various other fixes).
20050520	More updates. Working on dev_vga (4-bit graphics modes), adding
		40 columns support to the PC bios emulation.
		Trying to add support for resizing windows when switching
		between graphics modes.
20050521	Many more x86-related updates.
20050522	Correcting the initial stack pointer's sign-extension for
		ARCBIOS emulation (thanks to Alec Voropay for noticing the
		error).
		Continuing on the cleanup (ARCBIOS etc).
		dev_vga updates.
20050523	More x86 updates: trying to add some support for protected mode
		interrupts (via gate descriptors) and many other fixes.
		More ARCBIOS cleanup.
		Adding a device flag which indicates that reads cause no
		side-effects. (Useful for the "dump" command in the debugger,
		and other things.)
		Adding support for directly starting up x86 ELFs, skipping the
		bootloader stage. (Most ELFs, however, are not suitable for
		this.)
20050524	Adding simple 32-bit x86 TSS task switching, but no privilege
		level support yet.
		More work on dev_vga. A small "Copper bars" demo works. :-)
		Adding support for Trap Flag (single-step exceptions), at least
		in real mode, and various other x86-related fixes.
20050525	Adding a new disk image prefix (gH;S;) which can be used to
		override the default nr of heads and sectors per track.
20050527	Various bug fixes, more work on the x86 mode (stack change on
		interrupts between different priv.levels), and some minor
		documentation updates.
20050528	Various fixes (x86 stuff).
20050529	More x86 fixes. An OpenBSD/i386 bootfloppy reaches userland
		and can be interacted with (although there are problems with
		key repetition). NetBSD/i386 triggers a serious CISC-related
		problem: instruction fetches across page boundaries, where
		the later part isn't actually part of the instruction.
20050530	Various minor updates. (Documentation updates, etc.)
20050531	Adding some experimental code (experiments/new_test_*) which
		could be useful for dynamic (but not binary) translation in
		the future.
20050602	Adding a dummy ARM skeleton.
		Fixing the pckbc key repetition problem (by adding release
		scancodes for all keypresses).
20050603	Minor updates for the next release.
20050604	Release testing. Minor updates.

==============  RELEASE 0.3.3  ==============

20050604	There'll probably be a 0.3.3.1 release soon, with some very
		very tiny updates.


1 Release notes for GXemul 0.3.3.1
2 ================================
3
4 Copyright (C) 2003-2005 Anders Gavare.
5
6
7 GXemul is an experimental instruction-level machine emulator. It can be
8 used to run binary code for (among others) MIPS-based machines. Several
9 emulation modes are available. For some emulation modes, processors and
10 surrounding hardware components are emulated well enough to let unmodified
11 operating systems run as if they were running on a real machine.
12
13 I have verified that the following "guest" operating systems can run
14 inside the emulator:
15
16 Guest operating system Emulated machine
17 ---------------------- ----------------
18 NetBSD/pmax 2.0 (and 1.6.2) DECstation 5000/200
19 OpenBSD/pmax 2.8-BETA DECstation 5000/200
20 Ultrix 4.2-4.5 DECstation 5000/200
21 Sprite demo harddisk image DECstation 5000/200
22 Debian GNU/Linux for DECstation DECstation 5000/200
23 Redhat Linux 7.1 for mips DECstation 5000/200
24 NetBSD/arc 1.6.2 Acer PICA-61
25 OpenBSD/arc 2.3 Acer PICA-61
26 NetBSD/hpcmips 2.0 NEC MobilePro 770, 780, 800, 880
27 NetBSD/cobalt 2.0 Cobalt
28
29 A couple of other emulation modes exist. Some of these modes are almost
30 working well enough to run complete guest operating systems, but most are
31 just skeletons. The modes that work are listed in the documentation.
32
33 The emulator can also be used in other experiments; it does not have to
34 run entire guest operating systems. It is important to remember, though,
35 that GXemul does not simulate things smaller than an instruction; this
36 means that pipe-line stalls, penalties caused by branch-prediction misses,
37 and other effects are not simulated.
38
39 Summary of changes between release 0.3.2 and 0.3.3.1:
40
41 x) When booting from an ISO9660 (CDROM) filesystem image, the kernel
42 can now in some cases be read directly from the image, so there is
43 no need any longer to supply an external kernel. (It is a quick,
44 buggy, and very ugly hack, but it sometimes works.)
45
46 x) Mixing more than one disk image type (SCSI, IDE, PC-style floppy)
47 within one emulated machine is now possible. (There is however no
48 stable emulation mode yet that uses this.)
49
50 x) Many minor updates and bugfixes.
51
52 Files included in this release are:
53
54 BUGS A list of known bugs.
55 HISTORY Detailed revision history / changelog.
56 LICENSE Copyright message / license.
57 README Quick start instructions, for the impatient.
58 RELEASE This file.
59 TODO TODO notes.
60 configure, Makefile.skel sh and make scripts for building GXemul.
61 doc Documentation.
62 experiments Experimental code. (Usually not needed.)
63 src Source code.
64 tests Regression tests.
65
66 To build the emulator, run the ./configure script, and then run make.
67
68 Building the emulator should work on most Unix-like systems. (One system which
69 is specifically known to NOT work is Ultrix/RISC inside the emulator; Ultrix
70 chokes on the configure script and the default cc in Ultrix doesn't work.)
71
72 Regarding files in the src/include/ directory: only some of these are written
73 by me, the rest are from other sources (such as NetBSD). The license text says
74 that "All advertising materials mentioning features or use of this software"
75 must display acknowledgements. Even though I do NOT feel I mention features or
76 use of the header files (the "software") in any advertising materials, I am
77 still very grateful for the fact that these people have made their files
78 available for re-use, so regardless of legal requirements, I guess thanking
79 them like this is in order:
80
81 This product includes software developed by the University of
82 California, Berkeley and its contributors.
83
84 This product includes software developed for the
85 NetBSD Project. See http://www.netbsd.org/ for
86 information about NetBSD.
87
88 This product includes software developed by Jonathan Stone for
89 the NetBSD Project.
90
91 This product includes software developed for the NetBSD Project
92 by Matthias Drochner.
93
94 This product includes software developed by the NetBSD
95 Foundation, Inc. and its contributors.
96
97 This product includes software developed by Christopher G. Demetriou.
98 [for the NetBSD Project.]
99
100 This product includes software developed by Adam Glass.
101
102 This product includes software developed by the PocketBSD project
103 and its contributors.
104
105 This product includes software developed by Peter Galbavy.
106
107 Carnegie Mellon University (multiple header files,
108 no specific advertisement text required)
109
110 This product includes software developed by Charles M. Hannum.
111
112 This product includes software developed under OpenBSD by Per Fogelström.
113
114 This product includes software developed by Per Fogelström.
115
116 This product includes software developed at Ludd, University of
117 Luleå, Sweden and its contributors.
118
119 This product includes software developed by Hellmuth Michaelis
120 and Joerg Wunsch
121
122 The font(s) in devices/fonts are Copyright (c) 1992, 1993, 1994
123 by Hellmuth Michaelis and Joerg Wunsch. ("This product includes software
124 developed by Hellmuth Michaelis and Joerg Wunsch", well, the font
125 is maybe not software, but still...)
126
127 impactsr-bsd.h is Copyright (C) 2004 by Stanislaw Skowronek.
128
129 This product includes software developed for the NetBSD Project by
130 Wasabi Systems, Inc. [by Simon Burge]
131
132 arcbios_other.h is Copyright (c) 1996 M. Warner Losh.
133
134 This product includes software developed by Marc Horowitz.
135
136 See individual files for license details, if you plan to redistribute GXemul
137 or reuse code.
138
139 Thanks to everyone who has provided me with feedback.
140
141 If you have found GXemul useful in some way, or feel like sending me comments
142 or feedback in general, then mail me at anders(at)gavare.se.
143

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