For the latest information related to DOSBox-X please visit its homepage: https://dosbox-x.com/

An archive of all DOSBox-X official releases so far are available in the Releases page.

Also look at the CHANGELOG file for change logs of different DOSBox-X versions.

Below are changes to vanilla DOSBox (up to 0.74-3).

0.74-3
A security release for DOSBox 0.74:
- Fixed that a very long line inside a bat file would overflow the parsing 
  buffer (CVE-2019-7165 by Alexandre Bartel)
- Added a basic permission system so that a program running inside DOSBox 
  can't access the contents of /proc (e.g. /proc/self/mem) when / or /proc
  were (to be) mounted (CVE-2019-12594 by Alexandre Bartel)  
- Several other fixes for out of bounds access and buffer overflows.
- Some fixes to the OpenGL rendering.

It's recommended to use config -securemode when dealing with untrusted
files. 

0.74-2
A maintenance release for DOSBox 0.74, which solves the following problems:

- Windows: Fix auto/max cycles algorithm on Windows 7, which helps with 
           stuttering audio.
- Mac OS X: Bring a 64 bit version and improve performance.
- Linux: Fix the 64bit dynrec cpu core and a lot of compilation problems. 
         Add patches for the WINE Team.

The game compatibility should be identical to 0.74.

0.74
  - Several small game specific fixes/hacks/support. (Offensive,
    Roadhog, GTA installer, Kingdom O' Magic soundcard detection, 
    Pirate booter, Armored Fist installer)
  - Add the S3-specific 640x480 256 color mode. (fixes regression in "Wooden 
    Ships and Iron Men" and "I Have No Mouth  And I Must Scream")
  - Fix a stack overflow that could crash DOSBox.
  - Add fake microphone input. (fixes Talking Parrot)
  - Modify adlib turn off code, so that it doesn't turn off in 
    cases where the same sound is repeated over and over again.
  - Several small fixes to the CDROM audio code. (HOMM2, Redneck 
    Rampage and others)
  - Several improvements to the CDROM emulation code. (fixes Alpha
    Storm and  GT Racing 97)
  - Some small CPU fixes that might fix something.
  - Handle opcode 0xff subcode 7 as invalid instruction. (fixes dif-2 & others)
  - Some hercules fixes. (Testdrive)
  - Improve support for blanked parts that wrap around to the start of
    the screen. (fixes Magic Circle demo and Sid&Al)
  - Remove old OPL cores as the new ones seem to work very nicely.
  - Modify movie recording code so that the movies aren't corrupt when
    you exit dosbox without stopping the movie.
  - Change RGB3x scaler to look more pretty.
  - Improve initial register values compatibility of the GUS.
  - Added autodetection for Gameblaster. (games can find it now)
  - Change render preferences a bit to be more compatible with Windows 7.
  - Add DOS fixes to terminate program. (fixes Fortune Teller) 
  - Add FFREEP. (fixes Trucks)
  - Improve FPU ST80 in C mode when writing zero. (fixes Antigok)
  - Add special int10 scanline function. (fixes mz700 and probably lots
    of games that mess with them)
  - Fix scrolling in rarely used video modes. (fixes Orphee)
  - Modify game specific hacks a bit so that Kick off 3 works again.
  - Lots of fixes to the INT10 video parameter table. (Seven spirits 
    of ra and others)
  - Add VGA blanking in machine=vgaonly. (used by Alien Carnage)
  - CGA, PCJr, Tandy: Add video blanking, change display start latch 
    timing, sync pulse width correction.
  - PCJr, Tandy: implement vertical retrace interrupt.
  - PCJr, CGA: line-by-line video emulation.
  - PCJr: support on-screen change of color modes 4medium to 16low. (used
    by Ghostbusters booter)
  - Hercules: Add green and amber monochrome support.
  - All machines: only update the video timing when needed. (Jungle Hunt,
    others that synchronize to the video screen might profit)
  - Several small DOS fixes.
  - Some UMB related fixes. (The Legacy without UMB)
  - Fix version number of DSP for SB 1.5. (fixes a few games)
  - Several VGA emulation improvements. (Allertone football manager)
  - Some Tandy fixes. (Mech Warrior)
  - Small improvements and fixes to the OPL emulation.
  - Add low level Tandy DAC emulation.
  - Some EMS fixes. (fixes Mortal Kombat and others)
  - Change SoundBlaster DSP reset mechanism, add sb irq acknowledge logic.
    (fixes stmik-based applications)
  - Some interrupt pointer location modifications. (fixes Tinker Tales)
  - Some fixes to the BOOT code. (fixes Last Mission)
  - Respect write-only file information. (fixes Champions of Zulala)
  - Some RTC fix. (fixes Tully Bodine and others)
  - Improve mouse emulation to work better with Water World.
  - Hopefully fix the translation of the configuration file.
  - Speed up and fixes for the recompiler core. (pitfall2 pcjr)
  - Change memory start location. (fixes 7th Guest installer)
  - Several fixes to the batch file handling. (Shift and 
    use the typed first %0 instead of the parsed %0)
  - Improve file redirection and redirected line ends. (fixes 
    Phantasmagoria 2 DOS installer)
  - Fix compilation with new MAC os X version.
  - Add 16C550A FIFO support to the serial port emulation.
  - Improve modem emulation to get higher speeds.
  - Change default samplerates to 44100, blocksize to 1024 and prebuffer to 20,
    so that hopefully certain soundcards produce more fluent sound playback.
  - Add some rarely used, but for some games critical flags to 
    the internal commands.
  - Add -userconf flag, so that the userspecific configuration can
    easily be used together with -conf configfile.
  - Improve internal timing with repeating timers (especially with 
    the dynamic core).

0.73
  - Add two new opl2+opl3 emulators. (better speed, different implementation
    approach)
  - Improved DRO recording/better file structure.
  - Add EGA emulation.
  - Add special vga machine mode. Supports more of the exotic tricks like
    changing the palette during screen updates, 9x16 fonts etc.
  - Added special machine modes for the following svga cards:
     - S3
     - Paradise
     - Tseng
  - Fix problems with the vga split line feature.
  - Improve vesa emulation.
  - Add optional selection of old vesa mode for games that don't work
    with certain vesa features.
  - Improve video BIOS emulation to behave more like a real bios.
  - Fixes for emulated 4bpp graphics modes.
  - Fixes to paging system.
  - Various fixes and improvements for the recompiling core.
  - Add arm backend for the recompiling core.
  - Add some mscdex quirks when dealing with files that are exactly 8.3 long.
  - Small fixes to batch file handling.
  - Small fixes to the XMS memory handling.
  - Various fixes for aligned memory on hosts that want it.
  - Various improvements to the mouse.
  - Fixes and small speed ups to the debugger.
  - Fix and improve lot's of compilation problems. (curses detection,
    GCC 3.4 and GCC 4.X fixes)
  - Added some basic auto keyboard layout handling. (windows only currently)
  - Add basic support for evdev keyboard driver.
  - Various fixes to the timer. (improve mode 2 timer changes,
    implement mode 1, improve gate2 handling)
  - Add audio extraction and mci audio support. Should enable CDROM audio
    for Vista and adds volume control.
  - Improve the directory cache speed a lot, especially with mounting slow
    media like network paths.
  - Various fixes to the create temporary file call.
  - Don't keep batchfiles open during execution. Allows rewriting of the
    active batchfile. (menu programs use this trick sometimes)
  - Fix problems with filenames with 2 extensions.
  - Add some more lowlevel dos tables.
  - Fixes to hercules emulation.
  - Fix flag handling for special case of ROR.
  - Make the batchfile handling in regard to IF more flexible.
  - Fixes to scrolling/panning feature.
  - Add prefetch queue emulation.
  - Make the emulated cpu type selectable. This is mainly the
    identification commands and the way paging works.
  - Some special EMS functionality added. (OS handles, zero-page handling)
  - Improve support for EMS when booting a different OS.
  - Improve cdrom speed detection by games.
  - Improve stability of cycle guessing code, when there is background
    activity.
  - Fix various mscdex and cdrom detection schemes.
  - Added Coremidi support on Mac OS X.
  - Improve support for DOS devices when used to detect the existence
    of directories in various ways.
  - Add IRQ 2 emulation on VRET. (ega only)
  - Added video parameter table and video state functionality.
  - Increase default freespace to 250 MB.
  - Some fixes to the fat filesystem handling for disk images.
  - Some soundblaster fixes and command additions.
  - Fix mixer 16bit direct transfers on bigendian hosts.
  
0.72
  - Fixed uninitialized variable in joystick. (Fixes crashes on Vista and
    Mac OS X)
  - Some bugfixes and speedups to the 64 bit recompiling core.
  - Fixed sign flag on soundblaster dma transfers (Space Quest 6 intro)
  - Fixed a bug in keyboard layout processing code and fixed certain
    layouts.
  - Fixed Dreamweb.
  - Improved speed unlocking when running cycles=max.
  - Fixed a crash related to the tab completion in the shell.
  - Improved aspect correction code. Should now be like how a real monitor
    handles it.
  - Fixed a bug in the xms status report code. (Blake Stone 1.0 shareware)
  - Added a lot more keyboard layouts.
  - Fix crash related to changing the scaler before a screen was created.
  - Hopefully fixed compilation on *bsd.
  - Enabled auto cpu core selection for recompiling core as well.
  - Made the used joystick selectable when 4axis is specified.
  - Added some hints for inexperienced DOS users to the shell.

0.71
  - Add a new recompiling cpu core, which should be easier to port.
  - Add 64 bit version of the recompiling core.
  - Add mipsel 32 bit version of the recompiling core.
  - Fix a few small problems with FCBs. (fixes Jewels of darkness and
    cyrus chess)
  - Raise some more exceptions. (fixes vbdos)
  - Fix a few problems with the dynamic core. (fixes Inner Words,
    Archmimedean Dynasty and others)
  - Improve/Fix fallback code for certain graphics cards.
  - Fix a few cd audio related bugs.
  - Add an undocumented MSCDEX feature. (Fixes Ultimate Domain)
  - Fix some pcspeaker mode. (fixes Test Drive and similar games)
  - Improve dos keyinput handling. (fixes Wing Commander 3 exit dialog)
  - Remove Exit condition on fully nested mode. (fixes some demo)
  - Add image file size detection.
  - Add/Fix some ansi codes. (fixes PC Larn and certain versions of
    infocom games)
  - Several general DOS fixes. (fixes nba95, hexit and various other games)
  - Add some valid input checks. (fixes 3d body adventure and similar
    games)
  - Fix digital joystick centering problem.
  - Reenable textmode 54 and 55.
  - Fix a pelmask problem with univbe 5.0 lite. (fixes Panzer General)
  - Fix minor mixer underflow.
  - Some general image and bios disk emulation fixes.
  - Hopefully fix compilation on BSD and darwin.
  - Try using ioctl cdrom access by default if possible.
  - Fix some svga detection routine. (fixes Grandest Fleet 2 and Bobby Fischer
    Teaches Chess)
  - You can now close DOSBox using the status window in win32.
  - Add support for NX enabled systems.
  - Fix a casting error which only showed with certain compilers. (fixes
    various games under mac os x and 64 bit linux)
  - Improve timer and add gate 2 support. (fixes various games and
    joystick problems)
  - Improve mouse. Add undocumented backdoor. (fixes Last half of Darkness, 
    PC-BLOX and others)
  - Add/improve support for ~ and ~username in all commands.
  - Fix a font problem with the pcjr/tandy. (fixes personal deskmate 2)
  - Change dma routine a bit. (fixes ticks in sound in various games)
  - Allow read-only diskimages to be booted. (fixes various booter
    games)
  - Add basic hidden file support on cdrom images. (fixes Player
    Manager 2)
  - Add some rarely used functionality to the int10 mode setup. (fixes
    WW2 Battles of the South pacific)
  - Add ability to force scaler usage.
  - Speed up flag generation and make it more 386-like.
  - Some colourful feedback in the mapper.
  - General code cleanup.

0.70
  - Improve register handling and support with XMS.
  - Fix some issues with deleting open files.(windows only issue)
  - Add dummy LPT1 class. (windows only issue)
  - Improve some of the internal dos commands. (choice, copy and shift)
  - Improve ROM area. (for games that use it for random numbers or 
    overwrite it as some sort of detection thing)
  - Improve compatibility of dynamic core by making it handle certain
    pagefaults earlier.
  - Move internal dos tables around so we have more umb memory.
  - Add some dos tables.
  - Dynamic core supports io exceptions.
  - Move some interrupt handlers to XT Bios locations.
  - Add a dynamic fpu on x86.
  - Improve fpu on non-x86.
  - Trapflag gets strict priority over hardware IRQs.
  - Trapflag support for the dynamic core.
  - Add dummy TRx handling.
  - Fix a few rarely used character functions.
  - Improve auto cycle guessing code.
  - Improve and extend the joystick support.
  - Add autofire support.
  - Improve the mapper so you can map keys to the joystick and vice versa.
  - A few game specific video card fixes.
  - Fix some 64 bit cpu bugs.
  - Add support for certain cdrom detection schemes.
  - Improve HSG/Red Book support.
  - Improve MSCDEX.
  - Improve dynamic core support under intel macs.
  - Add basic support for clipper programs.
  - Add support for different keyboard layouts.
  - Add auto core guessing.
  - Fix a few flags bugs.
  - Fix a few small cpu bugs.
  - Improve soundblaster detection rate by various programs.
  - Improve EMS emulation. (allow mapping of non standard regions)
  - Improve keyboard input codes on various OS-es.
  - Fix problems with filenames having stackdata in them.
  - Changed a few basic operations in DOSBox so they take emulated time.
  - Improve dos ioctl functions.
  - Extend cpu core so they are capable of detecting and raising a few
    more exception types.
  - Improve DOS functions when dealing with virtual drive.
  - Improve FAT drives.
  - Better handling of volume-labels in file functions.
  - Image disk cycling capability. (prompt)
  - Try to reduce the impact of using an analog joystick.
  - Several measures to avoid code invalidation on certain types
    of self modification in the dynamic core.
  - Add dynamic core memory function inlining.
  - A few small mouse improvements. (some games are using things they
    shouldn't)
  - Add nullmodem emulation.(h-a-l-9000)
  - Some small cga and hercules fixes.
  - Add more scalers (hq2x/hq3x/sai). (Kronuz)
  - Change configuration file loading support. It now supports
    multiple configuration files.
  - Make dynamic core capable of running some win32s programs.
  - Fix and add some rare soundblaster modes. (Srecko)
  - Better soundblaster mixer controls. (Srecko)
  - Make soundblaster installation under windows much easier.
  - Add device control channel handling. 
  - GEMMIS support (ems under windows).
  - Support more colours in win 3. (vasyl)
  - Don't show unmounted drives in windows filemanager.
  - Fix some bugs in the int13 handler.
  - Simulate some side-effects of bios interrupt handlers on flags.
  - Add IPX functions needed by netbios.
  - Make ports take emulated time.
  - Tabcompletion is now aware of the CD command.
  - Add support for the dac pel mask.
  - Fixes to hercules emulation, better detection and bank switching.
  - Fixes to tandy emulation, 640x200x16 mode and different sizes bank.  
  - EGA/VGA memory changes detection for faster rendering.
  - Gus 16 bit fixes.
  - Many timer improvements. 
  - Some pcjr fixes.
  - Some booter fixes.
  - Many small fixes.

0.65
  - Fixed FAT writing.
  - Added some more missing DOS functions.
  - Improved PIC so that it actually honours irq 2/9.
  - Improved intelligent MPU-401 mode so that more games work with it.
  - Some mouse fixes.
  - Changed DMA transfers a bit so they bypass the paging tables.
  - Added S3 XGA functionality.
  - Improved paging so that read and write faults are handled differently.
  - Rewrote exception handling a bit (no exception 0x0B with dos4gw anymore).
  - Added IO exceptions in all but the dynamic core.
  - Some ems improvements.
  - Added midi-device selection code for the windows hosts.
  - Fix crashes/segfaults related to the disabling of the pcspeaker.
  - Added some more FILES=XX detection tricks.
  - Fixed some vga detection schemes.
  - Fixed screenshot corruption when using -noconsole in a read-only directory.
  - Fix wrong scaled screenshots.
  - Added some hidden file functions when using diskimages. (helps with cdrom 
    detection schemes)
  - Fixed a bug in the mixer code, that muted the music in certain games.
  - Added an assembly fpu core.
  - Made the shell more flexible for batch files.
  - Check for unaligned memory access fixes hangups on ARM processors.
  - Some 64 bit fixes.
  - Added code to change configuration at runtime.
  - Improved ADPCM emulation.
  - Fixed a few cpu instructions.
  - Always report vesa 2.0 and fix some colour issues with vesa games.
  - Fix video mode 0x06 and 0x0a.
  - Improvements to the joystick emulation. 4 buttons are supported as well.
  - Add VCPI emulation for Origin games.
  - Fixed a lot of things in the boot code. Most booters work now.
  - Lots of improvements to the IPX emulation.
  - Rewritten modem emulation. Should work with more games.
  - Improvements to the dos memory management routines.
  - Add UMB (upper memory blocks) support.
  - Emulate the pause key.
  - Improve Composite CGA mode emulation.
  - Lots of vga compatibility changes.
  - Improved support for chained video modes.
  - Improved mode and palette handling in cga modes.
  - Mount accepts ~ now.
  - Added a few of the EGA RIL functions.
  - Added TandyDAC emulation.
  - OS/2 support.
  - Improved and speed up the dynamic cpu core.
  - Fix some errors in the CD-ROM emulation layer.
  - Added an automatic work-around for some graphics chipsets.
  - Add PCjr support.
  - Allow mousedriver to be replaced. Fixes a few games that come with their
    own (internal) driver.
  - Improved dynamic cpu core so it can handle pagefaults and some obscure 
    types of self-modifying code.
  - Added -noautoexec switch to skip the contents of [autoexec] in the
    configuration file.
  - Improved v86 mode emulation (mainly for Strike Commander).
  - Improved timer behavior.
  - Improved extended keyboard support.
  - Enhanced and added several DOS tables.
  - Made core_full endian safe.
  - Made pagefaults endian safe.
  - Add support for moviecapturing
  - Add support for 15/16/32 bit videomodes.
  - Add some more VESA modi (4 bit).
  - Add 1024x768 output.
  - Changed screenrendering so it only draws changes to the screen.
  - Allow remapping of the EMS page when the dma transfer was started from 
    the page frame
  - Made EMS and DMA work together when playing from a mapped memory page.
  - Renamed several configuration options, so that they are unique.
  - Merged mpu and intelligent into one option.
  - Merged fullfixed and fullresolution.
  - Extended keys should be handled better.
  - F11 and F12 work.
  - Compilation fixes for various platforms.
  - Fix a few crashes when giving bad input.
  - Removed interp2x and added few new scalers.
  - Reintroduce the lockfree mouse. (autolock=false)
  - Add a larger cache for the dynamic cpu core.
  - Improved soundblaster DSP, so it gets detected by creative tools.
  - Lots of bugfixes.
  - Even more bugfixes.

0.63
  - Fixed crash with keymapper (ctrl-f1) and output=surface.
  - Added unmounting.
  - Fixed multiple issues with drive labels.
  - Fixed most if not all FILES=XX problems.
  - Added redirection in the shell.
  - Fixed crashes with subst.
  - Fixed multiple crashes with the drive images support.
  - Added a missing fpu instruction.
  - Fixed some cpu and fpu instructions.
  - Fixed a small bug related to font loading.
  - Rewrote the devices support.
  - Added capslock/numlock checks on startup.
  - Fixed wave writing.
  - A few internal DOS fixes.
  - Timer fixes for the hybrid loader.
  - Some small soundblaster fixes.
  - The drive cache can now be cleared by a keycombo. (CTRL-F4)
  - A few keyboard fixes.
  - Compilation fixes on various platforms.
  - Quite some debugger improvements.
  - Fixed dir only showing files after the first run on cdrom drives.
  - Added some cdrom detection checks.
  - Enabled insert in the shell. (Easier editing of commands)
  - Changed order in which executables appear with tab-completion.
  - Fixed some issues with raw opl recording and using a slightly different
    format

0.62
  - Added blinking support in the shell and some color fixes.
  - Fixed commandline parsing when .bat files involved (fixes -exit)
  - Fixed issues with tabs in commandline not being processed correctly.
  - Cleaned/improved shutdown sequence.
  - Added some more bios functions (wait and delay functions).
  - Made our XMS driver conform the specs better. (c2woody)
  - Added support for some more ems functions.
  - Added intelligent mpu401 emulation. (Srecko)
  - Added soundblaster 16 emulation.
  - Rewrote GUS emulation to sound more authentic.
  - Improved pc speaker emulation.
  - Added an internal (programmable) mixer.
  - Added support a few soundblaster/adlib detection routines.
  - Fixed lot's of bugs related to DMA transfers.
  - Added interpolating prebuffering mixer routines.
  - Added recording of OPL commands and raw midi.
  - Fixed some bugs with the wave recording.
  - Changed sensitivity settings of the mouse.
  - Added ps2 mouse-emulation in bios interrupts (c2woody).
  - Fixed some bugs with mouse emulation limits.
  - Fixed a bug with an unterminated string in the drivelabel.
  - Changed file search routines a bit to be more compatible.
  - Added support for attribute-searching with fcb's.
  - Added basic SDA.
  - Added TPA and DIB.
  - Added Lot's of missing dos tables (c2woody).
  - Changed psp and dta functions to use dta.
  - Returned filename in ds:dx in create-random-file (c2woody).
  - Fixed a bug with date and time used on open files.
  - Some mscdex fixes.
  - Added the -version switch, which makes dosbox report its version.
  - Added a keymapper.
  - Added basic IPX emulation.
  - Added cdrom iso support and floppy images support.
  - Added the possibility to boot another dos version.
  - Added Serial passthrough support (win32 only).
  - Added the possibility to pause dosbox.
  - Changed OpenGL so that it is initialized only when used.
  - Make dosbox run at higher priority when active and lower when inactive.
  - Added direct draw output support (win32 only).
  - Added current running program to title bar.
  - Rewrote video emulation to support new scalers.
  - Added new graphics scalers like advmame3x,tv2x.
  - Added a support for a few anti-debugger tricks.
  - Improved the handling of the tab-key.
  - Improved support for the numeric keyboard.
  - Fixed a few cpu opcodes.
  - Added cpu core simple (for lowerend machines)
  - Fixed some nasty bugs in the dynamic cpu core.
  - Added a few (rarely used) fpu opcodes.
  - Fixed various issues with GCC 3.4.
  - Many internal timer improvements (PIT and PIC).
  - Added some more PIC commands (c2woody).
  - Added BCD counting to the timers.
  - Fix some vesa functions.
  - Add some basic support for 132x25 and 132x45 textmodes.
  - Improved Tandy emulation a lot.
  - Lowered cpu usage when dosbox is idle.
  - Allow virtualisation of some basic IO-ports (c2woody).

0.61
  - Added a beta dynamic cpu for x86 hosts (very unstable)
  - Added opengl and hardware overlay display output
  - Rewrote the vga screen updates to go in lines
  - Added paging and v86 support to cpu emulation
  - Added a config option to simulate a certain type of machine
  - Added hercules graphics emulation
  - Made CGA/TANDY modes more compatible
  - Updated textmode drawing routines to support blinking colors
  - Fixed VESA set page function that was documented wrong
  - Fixed some wrongly emulated cpu opcodes.
  - improved exception handling
  - debugger: fixes; logging of gdt,lgt,idt, new commands(Fizzban)
  - fixed some mscdex issues (drive letter header error, added get directory entry)
  - added/fixed some bios funcs
  - added some rarely used xms functions (thanks c2woody!)
  - implemented GUS emulation
  - Added 16-bit DMA support (for GUS and eventually SB16)
  - Fixed many small bugs in filehandling routines
  - Many small FPU fixes (c2woody/Fizzban)
  - Some keyboard improvements (pharlab games)
  - Some Timer and cmos/rtc fixes (Mirek/Srecko/Others)
  - Lot's of mouse fixes (Help from various people)
  - Enabled internal modem
  - Made the DOS parsing routines a bit more flexible
  - Added Subst (Srecko)
  - Added cdrom ioctl support for linux (prompt)
  - Many internal DOS fixes: memory/files/datastructures.
  - Got some help from c2woody in allowing more than 1 irq being served
  - Disabled DPMI (not needed anymore. DOSBox handles almost every extender)
  - Search configfile in $HOME directory if none present in current directory
  - Added another way to switch to protected mode. (Thanks Morten Eriksen!)
  - Fixed some odd badly documented behaviour with PSP/DTA
  - Added some warnings on opening of readonly files in writemode(DOS default).
  - Many shell enhancements
  - Fixed a win32 specific bug dealing with filenames starting with a "."
  - Fixed some bugs with the directory structure: not found/can't save errors

0.60
  - rewrote memory system for future paging support
  - fixed several EMS and XMS bugs and rewrite for new memory system
  - added some support for tandy video modes
  - added MAME Tandy 3 voice emulation
  - added MAME CMS/GameBlaster emulation
  - added serial port emulation with virtual tcp/ip modem (somewhat buggy)
  - sound blaster emulation is now sb pro 2.0 compatible
  - added basic support for 32-bit protected mode
  - VGA now tries to emulate an S3 Trio 64 card with 2 MB
  - VESA 2.0 support for some 256 color modes
  - rewrote large piece of video bios code for better compatibility
  - added support for the not inheritance flags.
  - created functions for creating child psp.
  - updated errorcodes of findfirst (thanks Mirek!)
  - rewrote loggingsystem to generate less warnings
  - added dos protected mode interface (dpmi)
  - added cdrom label support
  - improved cdrom audio playing
  - fixed and improved directory cache
  - debugger shows selector- and cpu mode info
  - added SELINFO (selector information) command to debugger
  - added reference counting for dos files
  - added tab-completion
  - added basic fpu support.
  - fixed several bugs with case sensitive filesystems.
  - added more shell commands and improved their behaviour.
  - mouse improvements.
  - real time clock improvements.
  - DMA fixes.
  - Improved .BAT file support.

0.58
  - fixed date and time issues with fcbs
  - added more commands to the internal Shell
  - corrected config system when an old configfile was used
  - fixed cga put and get pixel
  - fixed some vga register getting reset to wrong values
  - improved support for foreign keyboards
  - improved joystick support
  - made dosbox multithreaded again
  - lot's of soundblaster fixes
  - dma fixes
  - cdrom support
  - midi support
  - added scale2x
  - reenabled screenshot support
  - joystick support fixes
  - mouse improvements
  - support for writing wavefiles
  - added directory cache and longfilename support (longfilenames will be mangled)
  - mouse fixes
  
  
0.57
  - added support for command /C
  - fixed all fcb-write functions
  - fixed fcb-parseline
  - added debugger under linux/freebsd 
  - added debugger memory breakpoints and autolog function (heavy debug)
  - added loadfix.com program that eats up memory (default 64kb)
    Usage  : loadfix [-option] [programname] [parameters]...
    Example: loadfix mm2      (Allocates 64kb and starts executable mm2)
             loadfix -32 mm2  (Allocates 32kb and starts executable mm2)
             loadfix -128     (Allocates 128kb)
             loadfix -f       (frees all previous allocated memory)
  - added echoing of characters for input function
  - added support for backspace for input function
  - added partial support for int10:01 set cursortype
  - fixed most of the problems/bugs with character input.
  - fixed allocationinfo call.(darksun series)
  - improved dos support for non-existent functions
  - Split screen support
  - prefix 66 67 support
  - rewrote timingscheme so 1000 hz timers don't cause problems anymore
  - update adlib emulation
  - fixed some issues with the mouse (double clicks and visible when it shouldn't be)
  - improved mouse behaviour (mickey/pixel rate) and detection routines.
  - basic ansi.sys support
  - Disney sound system emulation 
  - rewrote upcase/lowcase functions so they work fine with gcc3.2
  - SHELL: added rename and delete
  - added support for command /C. Fixed crashes in the shell
  - fixed various bugs when exiting dosbox
  - fixed a bug in XMS
  - fixed a bug with the joystick when pressing a button
  - create nicer configfiles.
  - bios_disk function improved. 
  - trapflag support
  - improved vertical retrace timing.
  - PIT Timer improvements and many bug fixes
  - Many many bug fixes to the DOS subsystem
  - Support for memory allocation strategy
  - rewrote cpu mainloop to act more like a real cpu
  
0.56
  - added support for a configclass/configfile
  - added support for writing out the configclass into a configfile
  - removed the language file and made it internal
  - added support for writing the language file (will override the internal one)
  - improved mousesupport
  - updated readme
  - support for screenshots
  - some cpu-bug fixes
  - dma changes
  - Real Sound support
  - EMM fixes and new functions.
  - VGA fixes
  - new wildcompare
  - support for size and disktype at mount.
  - added new debugger functionalities: start/trace into INTs, write processor status log, 
    step over rep and loop instructions, breakpoint support without using INT 03 (heavy debugging switch)
  - Added more cpu instructions and changed the string operations.
  - Added classes for most of the internal dos structures.
  - Rewrote most of the fcb calls to use normal dos calls.
  
0.55
  - fixed the errors/warnings in prefix_66.h and prefix_66_of.h (decimal too large becoming unsigned).
  - fixed compilation error on FreeBSD when #disable_joystick was defined
  - int10_writechar has been updated to move the cursor position.
  - changed the basedir routines to use the current working dir instead of argv[0]. This will fix and brake things :)
  - illegal command, now displays the command
  - wildcmp updated to be case insensitive
  - added fcb:open,close,findfirst, findnext.
  - fixed rename in drive_local
  - added new features to the debugger: breakpoint support / data view / command line
  - partial support of list of lists (dos info block)
  - full emm 3.2 support  
  - partial emm 4.0 support
  - fixes to graphics core fonts (text in sierra games is now correct)
  - improved support for user mousehandlers
  - fixed EGA graphics
  - fixed VGA graphics
  - fixed write with size 0
  - changed memory management.
  - fixed and cleaned up the cpu flags.
  - changed interrupt handler.
  - speeded up the graphics.
  - speeded up the cpu-core
  - changed dma 
  - improved dma streams from emm memory
  - added some cga videomodes
  - added more functions to the keyboard handler

0.50: 
      -added F3 to repeat the last typed command.
      -made it possible to change the shellmessages(dosshell). so 
      you can customize it.(dosbox.lang)
      -changed cpu core.
      -Fixed a lot of errors with the keyboard: shift-f1 and 
      alt-f1 now works.
      -Fixed some division errors.
      -made a plugin system.
      -added a lot of real 386 mode instructions.
      -made it possible to resize the screen.
      -Mayor source cleanup/reorganisation.
      -Complete rewrite of the graphics routines. Should make it
      possible to implement more fancy things like 2xsai,interpolation.
      -changed the sound playback.
      -Changed the vga drawing to only draw on memory changes, instead
      of drawing an entire frame. 
      -fixes to the soundblaster/dma code should be able to play 4-bit
      adpcm compressed sounds.
      -added the correct time to dir.
      -bugfixes to batch-file handling.
      -Lot's of small bugfixes.(Dune1&2,wolf3d, many more).
      -Released the source.
