Il s’agit d’un fork de DOSBox des plus intéressant, destiné à Windows Linux et MacOS et créé par Jon Campbell. Il possède une compatibilité excellente et met l’accent sur la précision d’émulation notamment en ce qui concerne l’émulation de Windows 3.x à ME. En outre il ajoute des améliorations en provenance d’autres builds comme DOSBox ECE avec l’émulation de la 3DFX en interne.


Les améliorations sont les suivantes:

  • PC-98 FM synthesis fixed not to initialize itself
    again when rebooting, which fixes a problem with
    garbled FM synthesis after rebooting.
  • Removed some now-unnecessary SDL Video quit/init
    calls from Windows builds.
    machine=pc98 now starts entire emulation in PC-98
    mode instead of booting up in IBM PC mode and
    switching to PC-98 mode.
  • Initial « BIOS » startup screen now operates in
    PC-98 mode when machine=pc98.
  • Removed DOSBox SVN-style « fast » A20 gate emulation.
    Recent changes make it infeasible to keep. « fast » is
    now mapped to « mask » mode.
  • RAM aliasing is now always on, even if memalias is not
    set, in order to help enforce A20 gate behavior, and
    to fix emulator crashes when a non-aliased RAM page
    is referenced through an alias.
  • Cleanup and rewrite of prefetch core, to make the code
    cleaner and more readable and maintainable.
  • DOS file I/O updated to apply a proper delay rather
    than the old DOSBox SVN code’s cycle count dependent
    method. The delay by default will slow disk I/O down
    to mid 1990’s IDE PIO speeds, which can resolve issues
    with MS-DOS demoscene or game executables that can
    malfunction when disk I/O is too fast.
  • PIC code updated to enforce a proper IRQ delay on ALL
    IRQ signals, which fixes issues with MS-DOS executables
    that have race conditions between their code and their
    interrupt handlers.
  • DOS Shell now shows the full intro text only at first
    run, instead of every shell invocation.
  • Use FCB record size of 128 bytes if the FCB record size
    is zero (from DOSBox SVN).
  • PC speaker fix not to generate a continuous tone if
    the PIT timer was set to mode 0. This fixes issues with
    many early 1990s demoscene executables leaving the PC
    speaker enabled (BEEEEEEP).
  • Register DEBUGBOX.COM at DOS environment start instead
    of boot, which allows the command to work again.
  • EXE loader sets stack pointer (SS:SP) into PSP segment
    (from DOSBox SVN)
  • EXE loader fixed to use the larger of the minimum and
    maximum memory sizes listed in the EXE header, which
    fixes some demoscene executables with a minimum size
    larger than maximum.
  • VGA DAC (palette) emulation updated to better match
    actual SVGA chipset (Paradise SVGA) behavior, which
    fixes some VGA palette errors in some demoscene
  • Added -nocachedir option to internal MOUNT command, to
    disable directory caching for a local folder mounted
    to a drive letter. When mounted this way, changes on
    the host filesystem are immediately visible in the
    guest DOS environment.
  • Added -ro and -rw options to internal MOUNT command, to
    allow mounting local folders to a drive letter as a
    read-only volume.
  • MIDI Fluidsynth fixed to initialize and free state properly
    so that switching to and from Fluidsynth doesn’t cause
    a segfault or crash.
  • MPU-401 fixed to allow changes to MIDI configuration from
  • DOS filename handling fixed to maintain ASCII conversion
    to uppercase, while not converting Shift-JIS double-byte
    characters in PC-98 mode. This fixes Shift-JIS filename
    corruption when the trailing byte can be mistaken for
    lowercase ASCII a to z.
  • Windows fixes to keep menu bar items updated with
    DOSBox-X state.
  • Remove WM_DROPFILES handling, for now. The code remains
    to allow re-enabling later.
  • SDL 1.x builds fixed to process only WM_COMMAND (menu
    bar) and WM_SYSCOMMAND (system menu) events so that
    the general chatter in modern Windows system does not
    drown out the messages. This fixes issues where the
    menu bar doesn’t work on some systems.
  • SDL 1.x builds fixed to handle menu bar input using
    SDL’s WM events instead of fighting with SDL’s message
    pump to receive menu events. This fixes potential
    issues with losing menu bar events.
  • dosbox.conf reference included with Windows builds
    now uses MS-DOS line endings so that the file can be
    edited in NOTEPAD.EXE
  • New dosbox.conf option to control whether the menu is
    shown by default in Windows builds.
  • titlebar= SDL dosbox.conf option, to allow showing a more
    user friendly name for the program instead of just using
    the EXE name.
  • E_Exit() on Windows now displays the message using
    MessageBox() in addition to sending to STDERR, so that
    Windows users see the error even if they are running
    it from the desktop instead of the command line.
  • PC-98 EGC bit shifter emulation fixed to correctly support
    ascending and descending bit shifting in either direction.
    This fixes screen shake emulation errors with Touhou Project
    TH04 and TH05.
  • Linux/X11 fixes to SDL 1.x to better match and compare
    Visuals (descriptions of the screen) since X11 libraries
    don’t seem to use the same pointer values for the same
  • ALT+TAB or loss of focus from fullscreen in Windows now
    restores the window instead of minimizing it.
  • 3Dfx OpenGL will hide the minimize and maximize buttons
    in Windows while active.
  • Windows menu bar items are now grayed out when 3Dfx OpenGL
    emulation is active (items that cannot be used at that time).
  • Fix Windows system menu to always keep « show menu ».
  • GFX rendering fixed not to render any output while 3Dfx
    OpenGL emulation is active.
  • 3Dfx OpenGL bug fixes to properly restore the DOS console
    when the 3Dfx card is de-initialized and the game returns
    to the DOS prompt.
  • Linux/X11 window output fixed to keep the window on the
    screen even when switching between OpenGL and non-OpenGL,
    and when setting the SDL video mode.
  • Remove some init hacks and SDL forced reinitialized hacks,
    so that the window is stable on the screen.
  • Added code to do more OpenGL state initialization (both
    output=opengl and when initializing 3Dfx OpenGL emulation)
    to make more consistent output.
  • 3Dfx voodoo OpenGL based emulation fixed to switch out of
    fullscreen mode IF DOSBox-X was fullscreen at the time the
    card is initialized.
  • 3Dfx voodoo OpenGL based emulation no longer allows fullscreen
    mode, and does everything it can to prevent window resizing.
  • Linux/X11 disable XRandR, XV, and X modeset functions. Do not
    change monitor resolution.
  • MPU-401 MIDI emulation fixed to look at all conductor message
    bytes for code 0xFC (ALL END) instead of just the first byte.
    This fixes hangs in games that send additional bytes prior to
    0xFC and then expect the MPU-401 to signal 0xFC back when the
    games are waiting for music to stop.
  • Fix DOS CON driver not to signal data ready for PC-98 scan
    codes that have no corresponding ANSI code. Tapping numeric
    keypad keys during the title screen in Touhou Project should
    no longer cause the game to pause waiting for keyboard input
    when going into demo mode.
  • Fix DOS CON driver to signal data ready for buffered escape
  • Fix PC-98 keyboard emulation not to apply IBM PC « extended »
    keyboard scancode filtering.
  • Window maximization does not count as a user resize preference.
  • Fix Windows builds to enable DirectSerial, Direct LPT, modem,
  • New mapper shortcut to restore the window’s original size.
  • Fix bug with SHL instruction and OF flag, which corrects some
    games and their decompression routines.
  • Fullscreen (monitor) modesetting removed. DOSBox-X either runs
    in a window, or scales up to fill the monitor, but will not change
    the monitor resolution.
  • Resize handling fixed to differentiate user resize verses resize
    caused by DOSBox-X changing the window dimensions.
  • Linux/X11 fixes to avoid flickering when resizing the window, and
    to avoid redrawing unless necessary.
  • Window resize management, to scale/arrange the output to fit the
    window (for output= surface, opengl, direct3d)
  • Enable resizing again, except when the GUI or mapper is active.
  • Fix Linux/X11 to always take resize events, instead of ignoring
    all further resize events just because one resize event is forever
    « pending »
  • Linux/X11 builds now track the size of the window on the desktop,
    to keep track of resizing and maximizing.

Les binaires 32 et 64 bits sont désormais dans la même archive.

Télécharger DOSBox-X v0.82.16 (2019/03/02) (12.3 Mo)

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