DOSBox-X 0.83.8 2020-11-31 22:04

Note: Installation instructions are available from the INSTALL page. Also, always check out the DOSBox-X homepage for latest updates.

You can also see the release notes here: DOSBox-X 0.83.8 Release Notes

0.83.8

• Added support for scalable TrueType font (TTF)
  output for text-mode programs. Set "output=ttf"
  and optionally a monospaced TTF font (such as
  consola) with config option "ttf.font" to use it.
  Lines and columns can be specified with config
  options "ttf.lins" and "ttf.cols", and the cursor
  can be made blinking with the option "ttf.blinkc".
  The config options "ttf.ptsize" and "ttf.winperc"
  can be used to set the TTF font size and window
  percentage respectively. If you specify a TTF font
  size with "ttf.ptsize" then "ttf.winperc" will be
  ignored. You can also specify a word processor
  (WP=WordPerfect, WS=WordStar, XY=XyWrite) for the
  on-screen text-style and 512-character font (WP)
  features. When using the TTF output DOSBox-X will
  temporarily switch to a different output when a
  graphical mode is requested (or when trying to take
  a screenshot); the TTF output will be auto-switched
  back later), which can be customized via config
  option "ttf.outputswitch" (which defaults to auto).
  Menu items in the "Text-mode" menu group (under
  "Video" menu) have been expanded to support TTF
  options such as increasing/decreasing the TTF font
  sizes and on-screen text style toggling (including
  bold, italics, underline and strikeout). You can
  also select a TTF font to use at run-time with the
  "Select TrueType font (TTF)" menu option. (Wengier)
• Added the "Load mapper file..." menu option (under
  "Main") to select and load a DOSBox-X mapper file
  at run-time. Be sure to select a SDL1 mapper file
  for SDL1 builds, and similar for SDL2. (Wengier)
• You can now select a host key from the menu (under
  "Main") including Ctrl+Alt, Ctrl+Shift, Alt+Shift,
  or use the mapper-defined host key as in previous
  versions (which default to F11 on Windows and F12
  otherwise). A config option "hostkey" is added so
  that you can specify it from config file. (Wengier)
• Pasting text from the clipboard on macOS SDL1 build
  is now supported like Linux SDL1 build. (Wengier)
• Added support for ARM-based Apple M1 MacBook. The
  dynamic core now works on ARM-based macOS systems.
  SDL1 builds updated to use newer audio APIs on the
  macOS platform so that the audio works once again
  when compiled and run on macOS 11 (Big Sur). Prior
  to the change, ancient versions of the API dating
  back to the mid 2000s were used which no longer
  work on Big Sur.
• DOSBox-X will now look for the config file (i.e.
  dosbox-x.conf/dosbox.conf) and the mapper file in
  the directory containing the DOSBox-X executable
  too if the config or mapper file cannot be found
  in the DOSBox-X working directory. (Wengier)
• The system menu in Windows SDL1 builds is now also
  available for Windows SDL2 builds, and menu items
  "Reset font size", "Increase TTF font size" and
  "Decrease TTF font size" are added. (Wengier)
• Enhanced the mapper editor interface to allow more
  keyboard shortcuts to be added, shown in multiple
  pages in the mapper, navigable with the "Previous
  Page" and "Next Page" buttons. The text in the
  grids are now longer and clearer too. The default
  shortcuts for a few items are changed to use the
  Host key style (e.g. Host+S and Host+L for saving
  and loading states respectively). (Wengier)
• Added menu item "List network interfaces" under
  "Help" menu to list network interfaces in the host
  system for the NE2000 feature. (Wengier)
• Added menu group "DOS commands" under "Help" menu
  to display the help content for the selected DOS
  shell command (DIR, CD, etc). (Wengier)
• Configuration Tool now provides the option to save
  to the primary or user config files. (Wengier)
• Certain config options (e.g. doublescan) that were
  marked as advanced options are now general config
  options and will appear in dosbox-x.reference.conf
  apart from dosbox-x.reference.full.conf. (Wengier)
• Added config options "saveremark" (default: true)
  and "forceloadstate" (default: false) in [dosbox]
  section which can be used to control if DOSBox-X
  should ask users to enter remarks when saving a
  state or show warnings when loading a saved state
  if there is a mismatch found. (Wengier)
• The config option "pixelshader" is moved from the
  section [gui] to [render] so that it will be in the
  same section as the option "glshader". (Wengier)
• Added menu item "Select OpenGL (GLSL) shader..." to
  allow OpenGL shader switch from the menu, just like
  the function for Direct3D pixel shaders. (Wengier)
• Added menu item "Show IDE disk or CD status" under
  "DOS" menu to show the current assignments (disk or
  CD image) of the IDE controllers. (Wengier)
• Fixed IDE CD assignment may not be reset when soft
  reboots are activated from guest systems. (Wengier)
• The program 80x43.COM is added into the ZIP package
  TEXTUTIL.ZIP on the Z drive. You can also change
  current text screen to the 80x43 mode from the menu
  group "Text-mode" under "Video" menu. (Wengier)
• Enhanced MODE command so that you can change the
  number of columns and lines in the screen with the
  syntax "MODE CON COLS=c LINES=n" (c=80 or 132, and
  n=25, 43, 50, or 60). The command "MODE CON" will
  show the current number of columns and lines in the
  screen as in a real DOS system. (Wengier)
• Added FLAGSAVE command for the save state feature
  to flag (mark) one or more files to be saved and
  loaded. Type "FLAGSAVE /?" for more information on
  this command. (PogoMan361 and Wengier)
• Enhanced A20GATE command to show the current status
  of the A20 gate when no parameter is given, along
  with other small improvements. (Wengier)
• INT 21h DOS=HMA emulation, to enable the A20 gate,
  and autoa20fix, to disable the A20 gate, now checks
  whether the CPU is running in virtual 8086 mode.
  If vm86 detected, the code will control the A20
  gate by calling the XMS interface instead of direct
  reading/writing via port 92h. This consideration
  is required for autoa20fix to cooperate with
  Microsoft Windows 3.1. Note that Windows 3.1 does
  not virtualize port 92h. If it did, this workaround
  would not be necessary.
• Added -a option to LOADFIX command which will auto
  allocate enough memory to fill lowest 64KB memory
  instead of using exactly 64KB memory. (Wengier)
• Added autofixwarning option (true by default) which
  allows user to silence the messages when DOSBox-X
  tries to auto-fix "Packed file is corrupt" error
  when running a program with this issue. (Wengier)
• Added autoa20fix option (enabled by default). This
  option when enabled attempts to resolve EXEPACK
  "Packed file is corrupt" errors by temporarily
  disabling the A20 gate and running the program
  again. This may provide better support for affected
  DOS applications than the LOADFIX option. If both
  autoa20fix and autoloadfix are set, then autoa20fix
  will be tried first, and if it did not work then
  autoloadfix will be tried next.
• The autoloadfix config option changed to allocate
  only enough memory to keep the executable above the
  64KB boundary, instead of blindly allocating 64KB.
• Fixed menu items "Rescan drive" and "Swap disk" in
  "Drive" menu being reversed. (Wengier)
• Fixed CD audio issue with the game "The Secret of
  Monkey Island" when talking to the pirate in Scumm
  Bar by adapting the patch that fixes it. Thanks
  kcgen for the fix logic. (Wengier)
• Added support for MAME CHD CD images. You can now
  mount CHD images with IMGMOUNT command, or from the
  Drive menu. Based on libchdr library and the work
  of the user whocares010. (Wengier)
• Updated FLAC/MP3/WAV CD-DA decoder libraries to the
  latest versions (versions 0.12.22, 0.6.19, 0.12.14
  respectively). Thanks to mackron & kcgen. (Wengier)

DOSBox-X 0.83.7 2020-11-01 01:28

Note: Installation instructions are available from the INSTALL page. Also, always check out the DOSBox-X homepage for latest updates. The primary DOSBox-X Wiki is now located at the URL: https://dosbox-x.com/wiki

Linux Flatpak package is officially available from the DOSBox-X Flathub page.

You can also see the release notes here: DOSBox-X 0.83.7 Release Notes

0.83.7

• Implemented the x86 dynamic core for both 32-bit
  and 64-bit systems by re-porting the code from SVN.
  Dynamic core now supports either the dynamic_x86
  or the dynamic_rec core. The dynamic_x86 core will
  be used by default for x86 and x86_64 platforms and
  if "core=dynamic" is set, and Windows 9x can be run
  in this dynamic core (although at this time may
  encounter some issue with the S3 driver). You can
  also explicit specify setting "core=dynamic_x86" or
  "core=dynamic_rec" for either the dynamic_x86 core
  or the dynamic_rec core. Also thank joncampbell123
  for the 64-bit fix. (Wengier)
• You can now use your own save file (in addition to
  save slots! There are now a "Use save file" toggle
  item and "Browse save file..." for browsing save
  files on your computer. A config option "savefile"
  (in [dosbox] section) is added to specify a save
  file to use at start. (Wengier)
• Save state feature now allows users to optionally
  enter remarks when saving a state. A submenu group
  "Save/load option" is added (under "Capture") where
  you can toggle menu items "No remark when saving
  state" (for disabling input of remarks when saving)
  and "force load state mode". A menu item "Display
  state information" is added as well to display the
  information of the saved state. (Wengier)
• DOSBox-X will now use native dialog box to display
  quit warnings and save state errors. (Wengier)
• Changed some DOS error messages (such as "Illegal
  command" which now reads "Bad command or filename")
  similar to real DOS systems. (Wengier)
• ADDKEY and INT2FDBG commands now appear as programs
  on Z: drive instead of shell commands. (Wengier)
• Improved the -z (move virtual drive Z:) function of
  MOUNT command. You can move the virtual drive as
  many times as you want, and save/load states will
  work even after you move the Z: drive. (Wengier)
• Enhanced the config option "freesizecap" to allow
  the setting "fixed" which is the same as "false",
  and a new setting "relative" is added, which will
  be similar to the setting "fixed" but the reported
  free disk size will also change relative to the
  change of the free disk size ever since. (Wengier)
• Added support for Opus CD-DA tracks by porting and
  cleaning up the source code from other projects.
  Many thanks to Marty Shepard and kcgen. (Wengier)
• Support for FluidSynth MIDI Synthesizer is now
  included in the MinGW builds by default just like
  Visual Studio builds. Set "mididevice=fluidsynth"
  and a soundfont file to use it. (Wengier)
• Enabled xBRZ scaler for Visual Studio SDL2 builds
  just like Visual Studio SDL1 builds. (Wengier)
• Added menu item "Show Sound Blaster configuration"
  under "Sound" menu to show the current information
  about Sound Blaster, and also menu item "Show MIDI
  device configuration" (also under "Sound" menu)
  to show information about the current MIDI device
  such as the soundfont file in use. (Wengier)
• Added "Mount multiple disk/CD images" option to the
  mounting options of the Drive menu to allow users
  to mount more than one disk/CD images to a drive,
  swappable from the menu. Also added separators to
  the Drive submenu to make it look better. (Wengier)
• Added new CPU types to the "Emulate CPU speed" menu
  group namely 286-25MHz, 386DX-25MHz, 486DX4-100MHz,
  486DX5-133MHz, Pentium-60MHz, Pentium-75MHz, and
  Pentium-90MHz. Thanks again for the data provided
  by the user maximus105. (Wengier)
• You can now select a special key (e.g. Alt+Tab,
  Ctrl+Break, Ctrl+Alt+Del, etc) to be sent from the
  key defined in the mapper editor. The key can be
  selected (Ctrl+Alt+Del by default) from the "Send
  special key" menu group in "Main" menu. (Wengier)
• Added full Ctrl+Break emulation at the BIOS and
  DOS level, updated console emulation to match.
  The "Pause" mapper shortcut is now moved to
  HOST[F11/F12]+Pause instead of Ctrl+Pause so that
  Ctrl+Break can work properly for users, and the
  function to send the Ctrl+Break key from the menu
  ("Send special key" under "Main") is added. Also,
  the PC-98 STOP key now functions the same as the
  Ctrl+C and Ctrl+Break keys in IBM PC mode.
• Added functions "CopyToClipboard" and "QuickRun" to
  the mapper editor so that you can use shortcuts to
  activate them (default shortcuts: HOST(F11/F12)+A
  and HOST(F11/F12)+Q respectively), and a default
  shortcut HOST(F11/F12)+V is added to the clipboard
  paste function. Meanwhile, FullCore and SimpleCore
  shortcuts are removed from the mapper. (Wengier)
• Added two new menu items in the "Shared clipboard
  functions" menu group under "Main", including "Copy
  all text on the DOS screen" which will copy all
  screen text to the clipboard, and "Stop clipboard
  pasting" which allows user to stop pasting in the
  middle of pasting long clipboard content. (Wengier)
• The mouse copy/paste feature is now available for
  non-Windows systems on SDL2 builds. Also, pasting
  from the clipboard with a mapped shortcut is also
  available for Linux/X11 on SDL1 builds. (Wengier)
• Added "Use US keyboard layout" toggle menu item in
  the "PC-98" menu group under "Video" to select
  whether to force the default US keyboard layout in
  PC-98 mode, same as the "pc-98 force ibm keyboard
  layout" config option in [pc98] section. Also moved
  the "PC-98 PIT master clock" options from the "DOS"
  menu to this menu group. (Wengier)
• The full dosbox-x.reference.conf file is renamed to
  dosbox-x.reference.full.conf. The original file
  dosbox-x.reference.conf now contains common config
  options instead of all config options. (Wengier)
• The CONFIG command and Configuration Tool will now
  save common and modified config options by default.
  The -all command-line option (or "Save all options
  to the configuration file" checkbox) will force to
  save all config options. A new -mod command-line
  option is added to CONFIG command to save modified
  config options only, and a new -norem command-line
  option is added to not write remarks. (Wengier)
• Updated the Windows installer to default to the
  "typical" installation. For the full installation
  start menu items will be added for DOSBox-X builds
  copied to subdirectories. A new checkbox "Write
  common config options (instead of all) to the
  configuration file" is added which when checked
  will only write common and modified advanced config
  options to the config file. Furthermore, for both
  "typical" and "full" installations the Windows
  installer will now also copies the DLL files
  inpout32.dll (32-bit) and inpoutx64.dll (64-bit) to
  the DOSBox-X install directory for use with the
  direct parallel port passthrough feature. (Wengier)
• Improved Flatpak support for Linux. (rderooy)
• Improved message for the -help command-line option,
  adding for example -silent and -socket command-line
  options in the help messages. (Wengier)
• Added -silent command-line option to run DOSBox-X
  silently (without showing the DOSBox-X window) and
  then exit after executing AUTOEXEC.BAT. (Wengier)
• Fixed command-line option -socket not working for
  the null-modem feature. (Wengier)
• Fixed issue that aspect ratio not being respected
  in full-screen mode when a GLSL shader is enabled
  with an OpenGL output. (Wengier)
• Fixed toggle in the "Frameskip" menu group did not
  change when selecting a different option. (Wengier)
• Fixed shelling from programs may not work when the
  shell config option is set. (Wengier)
• The default country setting ("country" option in
  [config] section]) now defaults to auto-detection
  if possible, or 81 (Japan) in PC-98 mode. (Wengier)
• Increased the default maximum DOS files (adjustable
  from [config] section) from 127 to 200. (Wengier)
• Improved resetting with LOADLIN program. (Wengier)
• Improved Gravis Ultrasound (GUS) implementation to
  make it more accurately represent the GUS DMA state
  as expected by the running DOS software.
• The archive attribute will no longer automatically
  be applied to directories on non-Windows systems.
  This fixed issue with PLAYMIDI.EXE from Gravis
  Ultrasound when listing directories. (Wengier)
• Applied hack to allow the low DMA channel detection
  in the SB16 DIAGNOSE program to work. (Wengier)
• The default setting of the clip_paste_speed option
  has been changed from 20 to 30, which will help
  prevent lost keystrokes when pasting from the host
  clipboard for some programs. (Wengier)
• With Pentium CPU setting (cputype=pentium) DOSBox-X
  no longer reports FDIV bug by default. An advanced
  config option "report fdiv bug" is added to report
  such CPU bug when set to true. (rderooy & Wengier)
• Added support for the XDG_DATA_HOME environment
  variable for config directory in Linux. (rderooy)
• Added support for compiling with pcap for Windows
  MinGW builds. (Jookia)
• Added config option "windowposition" (in [sdl]
  ...

DOSBox-X 0.83.6 2020-09-30 23:22

Note: Installation instructions are available from the INSTALL page. Also check out the DOSBox-X homepage for latest updates.

0.83.6

• Improved internal Voodoo card hardware emulation,
  such as fixing the font issue with the 3dfx version
  of Tomb Raider when using non-Glide mode. Portions
  of the code are ported from DOSBox ECE. (Wengier)
• Added OpenGL shader support by porting the feature
  from DOSBox SVN. GLSL shaders are now supported in
  both SDL1 and SDL2 builds, and this also allows
  pixel-perfect scaling to be enabled for the OpenGL
  outputs. The config option "glshader" (in [render]
  section) can be used to specify a GLSL shader file
  or a built-in shader when the output is set to
  "opengl" or "openglnb". For example, you can use
  the setting "glshader=sharp" (built-in shader) or
  "glshader=pixel_perfect" (with GLSL shader file)
  for the pixel-perfect scaling mode. The Windows
  installer will also copy several GLSL shader files
  to the "glshaders" subdirectory of the DOSBox-X
  install directory to be used directly. (Wengier)
• Support for FluidSynth MIDI Synthesizer is now
  included in the Windows Visual Studio builds by
  default. Set "mididevice=fluidsynth" and a sound
  font (e.g. GeneralUser_GS.sf2) to use it. (Wengier)
• Updated the MUNT MT32 emulation library to its
  latest version 2.4.0. A few new MT32 config options
  (starting with "mt32.") are added to [midi] section
  of the DOSBox-X configuration. (Wengier)
• The DOSMID and MPXPLAY programs have been built
  into DOSBox-X, both can be found on the Z drive and
  feature full-screen user interfaces with support
  for command-line usages (use /? option for help).
  DOSMID can play MIDI/RMI/MUS audio files, whereas
  MPXPLAY is a powerful and flexible audio player
  with support for a variety of formats including
  AAC/AC3/APE/FLAC/MP2/MP3/MPC/OGG/WAV and more with
  playlist support. (Wengier)
• The mounting options "Mount as Hard Disk", "Mount
  as CD-ROM", "Mount as Floppy", "Mount disk image"
  and "Boot from disk image" (previously only for
  Windows) in the "Drive" menu and the "Quick launch
  program..." in the "DOS" menu are now available
  for non-Windows platforms as well. (Wengier)
• Added "Shared Windows clipboard functions" menu
  group under "Main", which allows you to enable
  or disable the different ways for DOSBox-X to
  communicate with the Windows clipboard. (Wengier)
• Added config option "dos clipboard api" in [dos]
  section to control whether to enable the DOS APIs
  for communications with the Windows clipboard for
  DOS applications. (Wengier)
• Added config option "clip_mouse_button" to select
  a mouse button (middle, right, or none; with right
  mouse button being the default) for copying to and
  pasting from the Windows clipboard. (Wengier)
• The mouse wheel movements will be automatically
  converted into up/down arrows by default for the
  intergrated DOS now. You can also enable it for
  the guest system from the "Main" menu ("mouse wheel
  movements" -> "Enable for guest systems also") or
  from the config file. (Wengier)
• Added "Emulate CPU speed" menu group (under "CPU")
  to emulate the speed of a specific CPU class. The
  cycles to emulate are approximations of the actual
  CPU hardware, and they are available thanks to data
  provided by the user maximus105. Also added config
  option "cycle emulation percentage adjust" in [cpu]
  section for users who would like to make relative
  percentage adjustments (between -25% and 25%) in
  case it is necessary. (Wengier)
• Added SORT command from FreeDOS. It can be used to
  sort input, e.g. "TYPE FILE.TXT | SORT". (Wengier)
• Added DELTREE command to delete a directory and all
  the subdirectories and files in it as in a real DOS
  system. Please use it with caution. (Wengier)
• The command for starting the Configuration Tool has
  been renamed from "SHOWGUI" to "CFGTOOL". A new
  command-line option -gui is added to CONFIG command
  to start the Configuration Tool as well. (Wengier)
• DOSBox-X now includes ZIP.EXE and UNZIP.EXE from
  InfoZip for zipping and unzipping files in DOS.
  Both programs will appear on the Z drive. (Wengier)
• The powerful DOS CD player called SJGPLAY has been
  built into DOSBox-X. You can now find the program
  CDPLAY.EXE in the Z drive for playing Audio CDs in
  DOS, which supports both graphical and command-line
  usage, and you will also find a text file named
  CDPLAY.TXT in the Z drive for a quick usage guide.
  A zip package including full documentation and some
  extras will additionally appear as SJGPLAY.ZIP in
  the Z drive. This freeware program was written by
  Steve Gray and is now included in DOSBox-X with
  explicit permission of the author. (Wengier)
• DOSBox-X will now by default show a quit warning
  if a DOS program or game, or a guest system is
  running. The previous behavior can be set with
  "quit warning=autofile". (Wengier)
• The welcome banner when DOSBox-X starts has been
  improved for a better looking and should provide
  more helpful instructions for users. (Wengier)
• Add new "Help" menu which includes menu items
  "Introduction", "DOSBox-X homepage", "DOSBox-X Wiki
  guide", "DOSBox-X support" and "About". (Wengier)
• Improved the message when automatically re-running
  the executable which failed with the "Packed file
  is corrupt" error. Also added the "autoloadfix"
  config option which when set to "false" will not
  automatically re-run such programs. (Wengier)
• The display for several section names in DOSBox-X's
  graphical configuration tool has been capitalized
  or modified otherwise to look better. A default
  shortcut key HOST(F11/F12)+C is added for starting
  the graphical configuration tool. (Wengier)
• Added the "Show advanced options" checkbox in the
  main screen of the Configuration GUI to toggle
  whether to display all config options for the
  sections. If unchecked (default), it will show
  common config options instead of all of them. A
  new config option "show advanced options" is added
  which when set to "true" will make the checkbox
  checked by default. (Wengier)
• Added code to cap the scan line length given to
  the VESA BIOS given the video mode. This prevents
  VBETEST.EXE from doing test patterns smaller than
  the actual display, which can happen with 32bpp
  320x200 modes and 1MB or less video RAM.
• VESA BIOS Set Scan Line Length fixed to properly
  report and handle scan line length for 16-color
  SVGA planar modes. VBETEST 16-color modes now
  display correctly.
• Added option to control whether VESA BIOS panning
  (the original VBE call) waits for vsync.
• Moved video related config options from [dosbox]
  section to its own [video] section. These options
  in existing config files will be automatically
  redirected to the [video] section from the [dosbox]
  section when DOSBox-X starts. Windows installer can
  also move such config options from existing config
  files automatically. (Wengier)
• Cleared modem phone book before parsing it. Thank
  NicknineTheEagle for the improvement.
• Improved the help message of MOUNT command. Also
  added option -examples to show its usage examples,
  similar to IMGMOUNT and IMGMAKE commands. (Wengier)
• Fixed freeze when trying to reboot the internal
  DOS when using a different code page and it is in
  CGA or EGA emulation modes. (Wengier)
• DOSBox-X will now try to use the internal DOS date
  and time (instead of always using the host date and
  date) for file modication timestamps. (Wengier)
• Added menu item "Expanded memory (EMS)" under "DOS"
  menu to dynamically enable or disable EMS memory
  at run-time. You can now also modify EMS memory
  with CONFIG command from command-line. (Wengier)
• Added config option "drive z hide files" (in [dos]
  section) to hide or remove files listed (separated
  by spaces) from the Z drive. If a file has a "/"
  prefix (e.g. "/INTRO.COM"), then the specified file
  will have the hidden attribute ("DIR /A" will list
  all such files) instead of completely disappearing
  from the Z drive. (Wengier)
• You can now add your own programs or files to the
  Z drive! Put your programs or files in the drivez
  directory located in the DOSBox-X program folder
  or the DOSBox-X configuration directory, and they
  will automatically appear on the Z drive. If any of
  the files have the same names as the built-in ones,
  they will replace the built-in files. For example,
  you can replace the built-in EDIT.COM and XCOPY.EXE
  programs (from FreeDOS) with MS-DOS counterparts.
  Windows installer will now automatically create a
  drivez directory with a README.TXT file in it too.
  For subdirectories support please use MOUNT command
  to mount local directory instead. (Wengier).

DOSBox-X 0.83.5 2020-09-01 01:13

Note 1: Our redesigned DOSBox-X homepage (http://dosbox-x.com/) is now launched! Please be sure to check out the new homepage for the latest information about DOSBox-X.

Note 2: No Visual Studio build this time. I have no patience for a program (VS2019) that mysteriously stops working, and then completely forgets how to load a project file after a lengthy reinstall process (COM object errors???). Maybe next month, Microsoft.

0.83.5

• Windows installer now offers the option to upgrade
  the DOSBox-X config file (dosbox-x.conf) to the
  latest version format automatically while keeping
  users' current settings. It can also add a context
  menu for executables (.exe, .com, .bat), config
  files (.conf) and folders in the Windows Explorer
  so that you could quickly run or open them with
  DOSBox-X from the Windows Explorer. More icons
  are added to the DOSBox-X program group within the
  Start menu as well. (Wengier)
• Added config option "startbanner" in [dosbox]
  section which if set to "false" would skip the
  welcome banner when DOSBox-X starts. Also added
  config option "fastbioslogo" which if set to "true"
  will skip the BIOS logo (replacing the command-line
  option -fastbootlogo). A new command-line option
  "-fastlaunch" is added to enable fast launch mode
  by skipping both the logo and the banner. (Wengier)
• Added config option "ega per scanline hpel" in
  [dosbox] section to control whether EGA emulation
  latches hpel at display start (as VGA emulation
  does) or allows hpel to change per scanline.
  Setting the option to false is needed for some
  games like Commander Keen.
• Support for mounting CD images with a sector size
  of 2448, used by for example the MDF image of the
  game Grand Theft Auto. (Wengier)
• Allowed Sound Blaster to be enabled by the games
  "Desert Strike" and "Jungle Strike". (Wengier)
• Sound Blaster Pro emulation now maps DSP commands
  0x41 to 0x47 as aliases of 0x40 (set time constant)
  to support broken demoscene code that uses 0x41
  in that way. Yes, such code would obviously break
  on clone cards and the SB16. Added a config option
  "dsp command aliases" in [sblaster] section to turn
  it off for debugging. Alias is documented on Vogons
  forums where someone made a SB Pro clone card.
• Fixed the issue with CD audio play by porting the
  audio code from DOSBox ECE. (Wengier)
• COPY command now assumes /Y automatically when
  running in the batch file or with CALL command
  (or COMMAND /C) as in real DOS. (Wengier)
• DOSBox-X will allow control characters 8 (BS),
  9 (TAB), 26 (SUB), and 27 (ESC) when executing GOTO
  command in batch files without warnings. (Wengier)
• Normal core: REP MOVSD now checks segment limits
  for ES:(E)DI and throws a GP fault if exceeded.
  Demoscene productions marked as using VESA BIOS
  modes and scribbling on the VGA BIOS are relying
  on segment limits and GP faults to fake a linear
  framebuffer.
• Added config option "vesa bank switching window
  range check" to allow disabling the VESA BIOS
  window number range check when called on to
  bank switch. Needed for "Pill" by Opiate in the
  end credits, which for some reason requires a
  call for window number 0xFFFF to succeed in order
  to draw credits without glitching.
• Added config option "vesa bank switching window
  mirroring" for instructing VESA BIOS to ignore
  bank switching window parameter when asked to
  get/set bank switching window setting. Needed for
  some old demoscene and game applications that
  assume Window B is available, and will not render
  SVGA properly without it.
• Added config option "quit warning" to indicate if
  DOSBox-X should warn show a warning message when
  you try to close the DOSBox-X window. If set to
  "auto" (default), DOSBox-X will warn only if at
  least one file handle is still open, or you are
  currently running a guest system. (Wengier)
• Add command-line option "-defaultdir" to specify
  a directory (instead of the current directory) as
  the working directory. DOSBox-X will look for the
  dosbox-x.conf file in this directory. (Wengier)
• The -winrun command-line option will also enable
  LFN support with "lfn=auto" on Windows. (Wengier)
• VER /R now shows DOSBox-X's Git commit SHA1, in
  addition to the build date and other version
  information shown by the VER command. (Wengier)
• Fixed that joystick may not work with the setting
  "usescancodes=auto" when a non-US keyboard layout
  is activated on the SDL1 build. (Wengier)
• DOSBox-X will now search for system fonts if the
  fonts required for the printing feature cannot be
  found in the FONTS directory. (Wengier)
• Added menu item "Send form-feed" under the DOS menu
  for manually ejecting new pages to print. (Wengier)
• Added "Quick launch program..." menu (under "DOS")
  to quickly run the specified program as selected
  by the Windows file browser in DOSBox-X. (Wengier)
• Added "Drive information" menu item under "Drive"
  menu to show information for the specified drive,
  and added "Show mounted drive numbers" menu item
  under "DOS" menu to show details for all mounted
  drive numbers (0-5). (Wengier)
• The command "Swap CD" now swaps only CD drives (as
  the name), not all non-floppy drives. Also added
  "Swap disk" menu item under the "Drive" menu for
  swapping individual mounted drives. (Wengier)
• IMGMAKE now tries to resolve home directory (~)
  on Linux and macOS platforms. Also improved the
  help message for this command. (Wengier)
• Fixed unmounting swap disks when unmounting drives
  with MOUNT or IMGMOUNT command. (Wengier)
• Fixed possible failure when mounting .VHD images,
  and the issue that leading colon (:) or read-only
  marker may not work for such images. (Wengier)
• IMGMOUNT command without parameters now shows the
  disk position and number of swap disks, as well as
  IDE controller (if applicable). Also added option
  -examples to show its usage examples. (Wengier)
• Add "-ro" option for IMGMOUNT command to mark all
  disk images as read-only at once. You could also
  mark read-only disk images individually using the
  leading colon as in previous versions. (Wengier)
• The default value for "output" (in "sdl" section)
  is now "default", which will default to the value
  according to your platform. (Wengier)
• The -Q (quiet) option of MOUNT, BOOT and RESCAN
  commands now silences virtually all outputs (error
  and normal messages) of these commands. (Wengier)
• Worked around the mounting issue with LaunchBox,
  by allowing a mounting command-line with single
  quotes like MOUNT C 'X:\DOS' on Windows. (Wengier)
• Unmounting ISO drives will auto-unmount associated
  El Torito floppy drives (if any) too. (Wengier)
• Updated xxHash library by Yann Collet from 0.7.4
  to the stable version 0.8.0. (Wengier)
• Added support for the OPL2 audio board by setting
  the config option "oplemu=opl2board".
• The save state feature now tries to save and then
  restore the mounted drives of all types (if the
  paths or image files still exist on host system).
  This fixes the "save state corrupted" error while
  trying to load saved states but the drives are not
  yet mounted in DOSBox-X. (Wengier)
• The save state feature now verifies the emulated
  machine type (VGA, PC98, etc) too when loading a
  saved state. All confirm and error dialog boxes
  for saving or loading states appear in a cross-
  platform manner now, instead of only on Windows
  systems. Also added the option to remove the saved
  state in the selected save slot. (Wengier)
• Increased the number of save slots from 10 to 100.
  Each page in the save slot menu (under "Capture")
  still shows 10 slots as before, but you can now go
  to the previous or next page (up to 10 pages) for
  more save slots (100 in total). (Wengier).
• The [pci] section is now the [voodoo] section, and
  the config option "voodoo" (the only option of that
  section) is now named "voodoo_card" within the
  [voodoo] section to make clear it is for emulating
  the Voodoo card hardware. Also added config option
  "voodoo_maxmem" (default: true) to specify whether
  to use the maximum memory size (12MB instead of the
  standard 4MB) for the Vooodoo card. (Wengier)
• Added support for Glide wrapper. It can be enabled
  with the new config option "glide" set to "true"
  in [voodoo] section. The library file glide2x.dll
  (Windows)/libglide2x.so (Linux)/libglide2x.dylib
  (macOS) is required for Glide to work. Be sure to
  use 32-bit dll for 32-bit DOSBox-X binary, and
  64-bit dll for 64-bit DOSBox-X binary. (Wengier)

DOSBox-X 0.83.4 2020-08-02 11:59

0.83.4

• Fixed loading saved states in fullscreen mode with
  the "aspect=true" setting. (Wengier)
• Added config option "saveslot" to select default
  save slot (1-10). The timestamps for the saved
  states will also be shown in the menu. (Wengier)
• Added key mapper for sending the Ctrl+Alt+Del key,
  with HOST(F11/F12)+Del by default. (Wengier)
• Added dosbox-x.conf setting to ignore the EGA/VGA
  "extended memory" bit. It was originally defined
  back when stock EGA/VGA cards could ship with 64KB
  of memory. The option is needed for DOS games that
  accidentally clear the bit when using unchained
  256-color modes (Mr. Blobby).
• Added new default value "auto" for the setting
  "usescancodesauto" (in [sdl] section of the config
  file) to work around issues with non-US keyboard
  layouts on SDL1 builds. (Wengier)
• Added code pages 808, 850, 852, 853, 855, 857,
  858, 869, 872 for host to guest codepage mapping
  on mounted local or overlay drives. (Wengier)
• The mapper options "Increase recording volume" and
  "Decrease recording volume" as well as function
  "Show sound levels" (from MIXER command) appear
  now as menu items (under "Sound") too. (Wengier)
• Fixed inputting of ASCII character 224 and 240
  in Windows SDL2 or MinGW builds. (Wengier)
• Fixed possible DPMI error when running Windows
  98 installation from the DOSBox-X shell without
  using a batch file. (Wengier)
• Fixed a bug in the FAT driver that can cause
  a byte to get lost if writing up to the end of
  a cluster, which seems to be behind the
  corruption with program group files when running
  Windows for Workgroups 3.11 from DOSBox-X shell.
  [https://github.com//issues/1758#issuecomment-665193066]
• Unknown INT 2Fh calls are now debug output, not
  an error.
• Added VESA BIOS mode 68h alias as indicated on
  the Vogons forum.
• Fixed handling of config commands with spaces
  when the "shell configuration as commands"
  setting is enabled (quotes are needed in such
  cases). Also added "Config options as commands"
  toggle menu (under "DOS") to enable/disable the
  feature from menu. It is disabled by default to
  avoid name clash with other programs. (Wengier)
• Added "Enable quick reboot" toggle menu (under
  "DOS") so that when enabled, DOS restart calls
  will reboot the emulated DOS (integrated or
  guest DOS) instead of the virtual machine in
  DOSBox-X. Also, you could change the default
  setting for this by setting the new "quick
  reboot" config option in "dos" section (Wengier)
• Added new "Reboot guest system" menu item (under
  "Main") to reboot the kernel of the integrated
  DOS or the guest DOS directly. The previous menu
  item "Reset guest system" has been renamed to
  "Reset virtual machine" which will restart the
  virtual machine in DOSBox-X instead. (Wengier)
• Added "Reported DOS version" sub-menu (under
  "DOS") to dynamically change the reported DOS
  version (3.3, 5.0, 6.22, 7.1, or custom). This
  may enable/disable long filename (LFN) support
  with the default "lfn=auto" setting. (Wengier)
• LS is now an external command appearing on drive
  Z: as LS.COM instead of a builtin shell command.
  This avoids name clash with game "Links LS 97"
  which has the main executable named LS.EXE. Also
  fixed minor issues in this command. (Wengier)
• Fixed the game "Disney's Duck Tales: the Quest
  for Gold" not able to start. (Wengier)
• Improved Configuration GUI's handling of "4dos"
  and "config" sections. Also added the "Save..."
  button just before the "Close" button. (Wengier)
• Added "euro" config option (in [render] section)
  to display Euro symbol instead of the specified
  ASCII character in any code page. (Wengier)
• PC-98 CG MMIO writes fixed to limit writes only
  to the user-defined areas, same as the IO writes.
  This fixes "Niko Niko" that appears to write a
  few too many 0xE1 bytes when filling text
  attribute RAM and into the CG MMIO region.
• With -winrun command-line option or the setting
  "startcmd=true" (Windows only), you can now
  directly launch Windows programs on mounted local
  or overlay drives to run on the host. The option
  "startwait=false" can be used to disable waiting
  for Windows programs after started. This can also
  be toggled from the "DOS" menu. (Wengier)
• Added START command to run commands on Windows
  host system. The /MAX, /MIN, /HID options can
  be used to run the specified program maximized,
  minimized, or hidden (they can be shortened to
  +, -, _ respectively). This command is disabled
  by default, but can be enabled by either the
  "startcmd" config option (in [dos] section) or
  the -winrun command-line option (which will also
  enable the CLIP$ device for Windows clipboard
  support). START will run commands listed in the
  "startincon" config option (separated by space)
  in the Windows Command Prompt and wait for a key
  press before exiting. (Wengier)
• Added SHELL= option to the [config] section in
  dosbox-x.conf to specify an alternative shell,
  e.g. "SHELL=4DOS.COM". (Wengier)
• Added built-in 4DOS 8.00 shell for 4DOS features
  and capabilities. There is now a [4dos] section
  in the dosbox-x.conf file to act as the 4DOS.INI
  config file if you use this shell. (Wengier)
• Added "Mouse wheel movements" menu (under "Main")
  to enable or disable the mouse wheel movements
  to arrow (up/down etc) feature. (Wengier)
• Added "Quick right mouse button copy/paste" menu
  item toggle to allow quick Windows clipboard copy
  and paste via the right mouse button without any
  key modifier that may have been specified by the
  config option "clip_key_modifier". (Wengier)
• Fixed mounting a directory with command-line like
  "dosbox-x .", and fixed mounting disk images with
  spaces via the "Drive" menu on Windows. (Wengier)
• Added "mountwarning" config setting so you could
  optionally disable the warning when attempting to
  mount C:\ in Windows or / otherwise. (Wengier)
• IMGMOUNT now assumes "-fs none" automatically if
  a drive number is specified instead of a drive
  letter. Moreover, it will assume the image file
  name "IMGMAKE.IMG" if no filename is specified by
  the user. Also improved the command's handling of
  El Torito floppy drives, e.g. you can use option
  "-bootcd d" instead of "-el-torito d". (Wengier)
• IMGMAKE warning replaced to indicate a general
  incompatibility between MS-DOS/SCANDISK and
  cluster sizes 64KB or larger.
• IMGMAKE command will now use the image file name
  "IMGMAKE.IMG" if no file name is specified (either
  in the mounted local directory or in the DOSBox-X
  program directory if the current directory is not
  a local directory). The command now also supports
  a -force option to force overwrite the image file
  if it already exists. Furthermore, IMGMAKE will
  delete the generated image file if an error occurs
  during the image file creation. (Wengier)

DOSBox-X 0.83.3 2020-06-30 18:32

0.83.3

• IMGMAKE can now generate FAT12, FAT16, and FAT32
  filesystems. New option "-fat" is added to select
  the filesystem for the disk image.
• Fixed command-line like "./dosbox-x /dir/app.bat"
  not able to launch the specified program (Wengier)
• Fixed bug in DIR command's /P option which might
  cause it to not work properly. (Wengier)
• The default key modifier for the Windows clipboard
  copy & paste via the right mouse button feature is
  now "shift" instead of "disabled". (Wengier)
• Single-stepping in the debugger with the 286 and
  8086 normal cores now works correctly when stepping
  over instructions with a segment prefix.
• Pentium MMX instructions now only available for
  Pentium MMX or higher. Fixed the bug that allowed
  MMX instructions for Pentium and lower if programs
  ignored the CPUID feature bits. Also fixed Pentium
  MMX instructions so that they work in both 16-bit
  real mode and 32-bit protected mode to match how
  they work in real hardware (joncampbell123)
• Updated DOSBox-X's implementation for Pentium MMX
  instructions to latest version by kekko (Wengier)
• DOSBox-X will try to automatically run the program
  with LOADFIX if the error message "Packed file is
  corrupt" is detected. (Wengier)
• MOUNT command can now mount a drive to the UNC
  root path in the form \ComputerName\SharedFolder
  on Windows systems. (Wengier)
• Improved the HX-DOS build package to make it fully
  automated: all required HX DOS Extender files will
  be included in the package, and dosbox-x.exe can
  now be run directly in a real DOS system without
  external requirements. (Wengier)
• Fixed incorrect frame rate reported by 3Dfx Voodoo
  emulation (rderooy, backported from DOSBox SVN).
• Added the "Boot from disk image" menu item (A:, C:,
  and D: drives only) in the "Drive" menu to boot the
  specified disk image directly in Windows. (Wengier)
• Support for converting mouse wheel movements into
  keyboard presses like arrow keys, configurable by
  the option "mouse_wheel_key" (default is 0 which
  disables this feature). When set to 1, mouse wheel
  movements are converted to up/down arrows. Setting
  it to 2 or 3 converts such movements to left/right
  arrows or PageUp/PageDn keys respectively. (Wengier)
• Support for reloading the keyboard mapper file with
  the config -set command. (Wengier)
• IMGMOUNT command without parameters will show disk
  names for drive-number only mounts. (Wengier)
• IMGMOUNT can now autodetect DOS <= 3.21 harddisk
  geometry with MFM sector images (rderooy & Wengier)
• IMGMOUNT -fs none fixed to use same geometry detect
  function that FAT filesystem mounting uses.
• Added suppprt for mounting overlay drives using MOUNT
  command with "-t overlay" option. Backported from
  DOSBox SVN and adopted for DOSBox-X with additional
  features such as long filename and PC-98 support, it
  allows the users to redirect new and changed file(s)
  to a different location transparently. (Wengier)
• Cleaned up the DPI awareness auto-detection code to
  allow Visual Studio builds to again run on Windows 7.
  Meanwhile, MinGW builds (either SDL1 or SDL2 version)
  are still required for Windows XP systems. (Wengier)
• Updated Nuked OPL3 to latest version 1.8 for accurate
  OPL3 emulation (Wengier)
• Added AUTOTYPE command to perform scripted keyboard
  entry into a running DOS program or game. Ported from
  DOSBox-staging, it can be used to reliably skip intro,
  provide input to answer initial startup or config
  questions, or conduct a simple demo. (Wengier)
• Added code page 866 (Cyrillic Russian) to support
  host to guest code page mapping (tuffnatty)
• Mouse buttons (left, middle, right) can now be mapped
  to keys in the keyboard mapper. (Wengier)
• Support for mounting .cue files with MP3/OGG/WAV/FLAC
  compressed audio tracks. (Wengier)
• Rewrote the Windows installer for DOSBox-X, as well as
  the building script for the installer. All required
  build tools including the Inno Setup Compiler are now
  provided in the repository and will be automatically
  called by the building script. (Wengier)
• Added config option "mapperfile_sdl2" for SDL2 builds.
  SDL1 and SDL2 builds of DOSBox-X can not use the same
  mapper file, or they will likely malfunction. Adding
  this option allows SDL1 and SDL2 builds of DOSBox-X
  to work with the same dosbox-x.conf file. (Wengier)
• Added GUI menu option under "DOS" to change the long
  filename setting (enable, disable, or auto). (Wengier)
• Improvements and fixes to the save/load state feature:
  It now supports Sound Blaster Goldplay mode;
  It now saves PC-98 FM interrupt state so that reloading
  state does not cause hung music;
  It is also fixed not to crash when used within a guest
  operting system (when the DOS kernel has been shut down
  using the BOOT command);
  It now supports memory size up to 1000MB;
  It will save and verify the DOSBox-X version and build.
  States saved by DOSBox-X in one platform (e.g. 64-bit
  Windows) may not work in another (e.g. 32-bit Linux).
  The GUI menu will show if the save slot is empty, and if
  not the program name of save state will be displayed.
• Re-ported and improved the save state feature for saving
  and loading states with support for up to 10 save slots.
  They can be selected from the "Capture" menu. (Wengier)
• Added COUNTRY command to set country code for country-
  specific date and time formats. For example, the command
  "COUNTRY 61" sets the country code to 61 (International
  English) which uses the DD-MM-YYYY date format instead
  of the default (U.S.) MM-DD-YYYY date format. (Wengier)
• DOS 440Dh IOCTL function 67h (get access flag) added to
  allow FDISK.EXE to determine FAT filesystem type. Also
  implemented function 40h (set device parameters) and
  function 46h (set volume serial number). (Wengier)
• Unknown DOS 440Dh IOCTLs warnings now indicate whether
  triggered by call or query.
• S3 VESA BIOS mode number for 1024x768 32bpp changed to
  avoid conflict with Windows 95 S3 driver and 800x600
  16bpp mode.
• FAT driver no longer mounts FAT32 volumes unless the
  DOS version is 7.1 or higher, and it no longer mounts
  FAT16B LBA volumes unless the DOS version is 7.0 or
  higher. These are to mimic the MS-DOS behavior.
• Fixed FAT driver not to attempt to mount partitions that
  have nothing to do with the FAT filesystem (such as
  type 0Dh and extended LBA partition tables). Also fixed
  the FAT driver to not assume partition start sector 63
  if it cannot identify a partition to use.
• Added code to FAT driver to identify telltale pattern
  left by Microsoft FDISK when a partition is created (but
  not yet formatted) and reject.

No Centos 8 builds because apparently libcap-devel and fluidsynth are not available.

DOSBox-X 0.83.2 2020-05-31 16:45

0.83.2

• Added help messages for some supported commands. (Wengier)
• Added phone book support for the emulated modem. There is
  a new phonebookfile= option in the [serial] section. The
  phone book file entries need to be in the format of:
  " <hostname/ip:port>" e.g.
  5551234 cavebbs.homeip.net:23
• Implemented the missing EMS subfunctions 52h and 59h by
  porting the patch that adds them (Wengier)
• Fixed issues with the "config -wcd -all" command and other
  updates to the CONFIG command (Wengier)
• Added [config] section in dosbox-x.conf to resemble DOS's
  CONFIG.SYS file. It currently supports REM, BREAK, NUMLOCK,
  FCBS, FILES, DOS, DEVICE/DEVICEHIGH, INSTALL/INSTALLHIGH,
  SET and LASTDRIVE commands. The file CONFIG.SYS will appear
  on the Z: drive, similar to AUTOEXEC.BAT file. The [config]
  section can be bypassed with the -noconfig command-line
  option or with the secure mode enabled (Wengier)
• Moved PC-98 related config options (starting with "pc-98 ")
  from [dosbox] and [dos] sections to its own [pc98] section.
  These options in existing dosbox-x.conf/dosbox.conf files
  will be automatically redirected to the [pc98] section from
  the other sections when DOSBox-X starts (Wengier)
• The user directory DOSBox-X uses has been changed to use the
  DOSBox-X directory (e.g. from ~/.dosbox to ~/.config/dosbox-x
  on Linux platform). It will be read after the dosbox-x.conf
  file in the current directory (Wengier)
• Config option "dpi aware" now supports the "auto" setting
  to auto-decide on the best setting for the platform. This
  fixes very small window issue on high DPI devices such as
  Microsoft Surface tablets. (Wengier)
• Added DTASEG, DTAOFF, and PSPSEG as hex value constants to
  the debugger interface to aid in debugging DOS programs.
• New command-line option -helpdebug added to list debug-
  related command-line options. The standard -? / -h / -help
  command-line option will no longer list them (Wengier)
• Implemented LFN support for FAT driver, so that it is now
  possible to view directory list, create or open files and
  directories etc with long filenames on FAT12/16/32 drives
  just like on mounted local drives.
• FAT driver cleaned up and fixed to avoid edge cases that
  can corrupt directory entries and leave lost clusters
  on the disk, also fixed to always report root directory
  as a directory through the GetFileAttribute INT 21h call,
  needed by MOVE.EXE and XCOPY.EXE to work properly.
• IMGMOUNT auto geometry detection will assume LBA disk
  and fake C/H/S geometry if the disk is 4GB or larger,
  the MBR lacks executable code, or the first partition
  is Windows 98-style LBA FAT16 or FAT32.
• IMGMOUNT now assumes ISO type by default if the image file
  extension is .iso/.cue/.bin/.mdf. No need for "-t iso" in
  this case; but (if appliable) it can be overridden by for
  example "-t hdd". (Wengier)
• IMGMOUNT command (no parameters) now lists mounted FAT/ISO
  drives and mounted drive numbers, also SUBST command (no
  parameters) now lists mounted local drives (Wengier)
• INT AH=36h fixed to convert free space but maintain a
  cluster size (bytes/sector * sectors/cluster) that is less
  than 64KB to avoid divide by 0 crashes with FORMAT.COM /S
• Added FAT32 free/total disk space API for FAT driver, and
  updated INT 21h AX=7303h to call it. FAT driver now provides
  FAT32 extended disk free/total through FAT32 API and 2GB
  limited free/total through INT 21h AH=36h for older DOS
  programs. Shell DIR command updated to use FAT32 free space
  API to show free space even on FAT32 partitions larger than
  2GB, but only if the DOS version is set to 7.1 or higher.
• Added FAT32 INT21h and IOCTLs needed by MS-DOS 7.1/Windows 98
  versions of SCANDISK.EXE and FORMAT.COM, such as DOS functions
  for "FAT32 extended" absolute disk read and write.
• Improved FAT32 support to the FAT driver, including direct
  support for FAT32 drives in the DOSBox-X command shell. Files,
  directories and volume labels on FAT32 drives can be listed,
  read from or written to just like on FAT12/16 drives.
• Added DOS IOCTL read/write logical device track functions so
  that FORMAT.COM is able to verify and modify the partition table
  to successfully format a hard drive image. Also added stub to
  DOS IOCTL "format device track" for FORMAT.COM.
• You can now force unmount a drive and then mount it to a new
  directory in one command, e.g. "MOUNT C C:\DOS -U" (Wengier)
• REN command can now rename directories (in addition to files) on
  FAT drives just like on local drives (Wengier)
• Several improvements to DEL command, such as a new /F option to
  force delete of read-only files, and improved handling when the
  argument is a directory (Wengier)
• LS command added to list directory contents. It does not support
  all options as in Unix/Linux platform (Wengier)
• DIR /O & /OG supported in addition to /ON|/OE|/OS|/OD options.
  Options such as /-O & /-A can be used to override /O, /A etc if
  they are specified in the DIRCMD environment varaible (Wengier)
• DIR and VOL commands now display real serial numbers for mounted
  local drives (Windows only) and FAT drives (Wengier)
• Fixed SYS command not working properly (Wengier)
• DOS kernel INT 21h function Set File Attribute no longer
  allows changing volume label attributes and fixes directory
  attributes in order to prevent filesystem corruption.
  This prevents Windows 95 Setup from creating WINBOOT.INI
  and then changing it into a directory with the call.
• FAT driver bugs fixed where a newly created zero length file
  combined with a lseek() can corrupt filesytem structures
  (root directory and/or the second FAT table). This fixes
  filesystem corruption when running Windows 95 install.
• Enabled printer emulation for non-Windows OSes (Linux,
  Mac OS X, etc.). FreeType2 is required to enable
  printer emulation at compile time.
• Added command-line option "-o" for MOUNT command so that
  it can be specified whether to report mounted local drives
  as remote (network) drives. It is "auto" by default just
  like the virtual drive Z:.
• Added config option "drive z is remote" in dosbox-x.conf
  to report drive Z: as a remote (network) drive. It is
  "auto" by default, which will try to prevent SCANDISK.EXE
  from Windows 9x installs to scan and "repair" drive Z:
  which is not backed by a disk filesystem.
• Fixed clip_key_modifier setting not working when it is
  set to alt, ctrl or shift in the SDL2 build. (Wengier)
• Sending "Ctrl+Alt+Del" key from the menu will now reset
  the system within DOSBox-X when the intergrated DOS or a
  real DOS booted from a disk image is active. (Wengier)
• PC speaker output fixed not to timeout and stop rendering
  unless the PC speaker output is not emitting anything
  audible anyway (Fix for Sopwith 1 and 2).
• Added ALIAS command to define or display aliases.
• "HELP command" now works the same as "command /?" for
  supported internal commands. (Wengier)
• Improved handling of quotes in some commands. (Wengier)
• Added -set command-line option to change config options.
  It can be specified multiple times for multiple options,
  overriding any options in the config file. For example,
  the command "dosbox-x.exe -set machine=pc98" will force
  DOSBox-X to start in PC-98 mode. (Wengier)
• Re-added full drive menu items for the Windows platform.
  The "Boot from drive" item (A:, C: and D: drives only)
  should work in other platforms too. The BOOT command is
  also improved to allow e.g. "BOOT A:" to work. (Wengier)
• INT 10h vector now points into VGA BIOS as a workaround
  for DOS programs that use vector location as part of
  their EGA/VGA detection. This fixes blink attribute
  and EGA/VGA detection failure with SuperCalc 3 and
  SuperCalc 4. This option, enabled by default, can be
  disabled or enabled from dosbox-x.conf.
• Improved long filename (LFN) and SetFileAttr/GetFileAttr
  support for PC-98 mode. (Wengier)
• Added config option "lfn" to enable/disable long filename
  (LFN) support. With default setting of "auto", LFN support
  is enabled if the reported DOS version is at least 7.0.
• Added config option "automountall" (default: false) to
  automatically mount all available Windows drives (Wengier)
• The copy & paste Windows clipboard text via the right
  mouse button feature now has support for PC-98 mode too
  in addition to other modes. (Wengier)
• MPU401 IRQ fixed to properly default to 2 or 9 in IBM
  PC/XT/AT mode depending on the "enable slave pic" config
  option (rderooy)
• Fluidsynth defaults fixed for better more reliable audio
  streaming on Linux and Mac OS X (Wengier and rderooy)
• Improved support for FluidSynth MIDI device by porting
  code from DOSBox ECE. Set "mididevice=fluidsynth" along
  with other required options such as "fluid.soundfont"
  in dosbox-x.conf to use it. The previous config setting
  "mididevice=synth" is still supported for alternative
  implementation of FluidSynth. (Wengier)

DOSBox-X 0.83.1 2020-05-02 17:41

0.83.1

• dosbox-x.conf is now recognized as the default config
  file name in addition to dosbox.conf. The sample config
  file "dosbox.reference.conf" has been renamed to
  "dosbox-x.reference.conf" as well (Wengier)
• Sound Blaster emulation fixed to better handle Goldplay
  mode detection false positive in 1994 demoscene demo
  myth_dw.zip when using Sound Blaster Pro setting in
  the demo. The initial state before music starts is
  like Goldplay mode, but when music actually starts the
  DMA programmed to normal state without restarting
  DMA playback.
• Tandy DAC output fixed to slowly ramp last sample to
  zero DC sample (128) when switched off. This fixes
  loud popping (DC offset) problems with Tandy DAC
  sound effects in Prince of Persia. This new behavior
  also seems to match real Tandy 1000 hardware according
  to video captures of it's audio/video outputs while
  playing Prince of Persia on it.
• Tandy/PCjr 3-voice fixed to respond to I/O port 0xC0
  regardless of 8-bit or 16-bit I/O (fixes Prince of
  Persia).
• Write-protecting a disk image in IMGMOUNT and BOOT
  commands now supported by putting a leading colon (:)
  before the image file name. Works with disk swapping;
  e.g. "BOOT :C:\DISK1.IMG C:\DISK2.IMG" only write-
  protects C:\DISK1.IMG but not C:\DISK2.IMG. The new
  config option "leading colon write protect image" can
  be used to disable or enable this behavior (Wengier)
• Support for changing DOSBox-X internal time (Wengier)
• Support for pipes (|), e.g. "DIR | MORE" should now
  work as expected; it is recommended to set the %TEMP%
  (or %TMP%) environment variable to a writable directory
  inside DOSBox-X before using pipes (Wengier)
• Improved redirections using "<" or ">" (Wengier)
• Improved Ctrl+C handling in some commands (Wengier)
• Improved Tab completion in the command shell (Wengier)
• Improved -get & -set options for the CONFIG command,
  e.g. support for config options with spaces (Wengier)
• Improved REN (or RENAME) command to support wildcards
  (* and ?) in the source and/or target files (Wengier)
• Some improvements to commands like MORE & VER (Wengier)
• Added BREAK, VERIFY and TRUENAME commands as in a real
  DOS system. Type "[command] /?" for help info (Wengier)
• Implemented FOR command to run a specified command for
  each file in a set of files. Also added LFNFOR command
  to control whether to use long filenames in the FOR
  command as in MS-DOS 7+ (Wengier)
• Implemented ATTRIB command to view and set attributes
  of files or directories (Wengier)
• Added emulation of R (readonly) attribute bit for
  Linux and Unix systems through the user-writable
  file mode bits of the filesystem.
• Fixed PC DOS 2000 crash during installation.
• PC speaker: Mode 3 (square wave) and a counter value
  of 1 produces a low frequency square wave. Ulrasonic
  frequencies do not begin until count == 2. This fixes
  helicopter noises in Paratrooper.
• Fixed PC speaker emulation to allow higher PC speaker
  frequencies (10x the value of pcrate) to reduce
  hiss/noise/aliasing noise that occurs when games
  program ultrasonic frequencies into the counter to
  "silence" the speaker. "Titus the Fox Marrakech and
  Back" should no longer have audible hissing noises
  between beeps when the game is using the PC speaker.
• Increased DOS device limit, to avoid E_Exit() crash
  if all LPT and COM devices are enabled along with
  the new CLIP$ device.
• Minimum MCB free default changed to better reflect
  a typical MS-DOS setup with minimal to no drivers.
  This should result in a report of 600K-ish memory
  free, which is equivalent to Windows 95 without
  anything loaded except COMMAND.COM.
• DIR command now supports /S (search all directories)
  as well as /A, /AS, /A-S, /AH, /A-H, /AR, /A-R, /AA,
  /A-A options for file attribute support; Note that
  DIR /A shows all files and directories whereas DIR
  alone (without /A) shows all except system/hidden
  ones as in a real DOS system (Wengier)
• DIR command now shows the real free disk space on
  local drives. It is possible to limit this free space
  for certain programs with the -freesize option of
  MOUNT command. A new config option "freesizecap" is
  added to change the behavior of this option (Wengier)
• DIR command fixed to show the volume label of the
  drive you are listing, instead of always the current
  drive (rderooy)
• Various improvements to DEL and COPY commands, e.g.
  fixed the DEL /P option having no effect, and "DEL ."
  deleted all files in the current directory silently;
  the COPY command now asks for confirmation before
  overwriting files, and it now supports /Y and /-Y
  options to change this behavior, which can also be
  set from the COPYCMD environment variable. (Wengier)
• Added or fixed help information and/or error messages
  for some commands. (Wengier)
• Added support for DOS programs to communicate
  with the clipboard in Windows builds. If the
  "dos clipboard device enable" setting in
  dosbox-x.conf is set to "true" or "full", a DOS
  device (default name: CLIP$) will be added to
  allow bidirectional communications with the
  clipboard (e.g. "DIR >CLIP$" will write the
  output to the clipboard, and "TYPE CLIP$" will
  show the clipboard contents). Alternatively,
  you can set it to "read" or "write" to allow
  only read or write access for security reasons.
  The DOS device name can also be changed with
  the "dos clipboard device name" setting in
  dosbox-x.conf. (Wengier)
• Added support for using the right mouse button
  to copy and paste from the Windows clipboard; the
  config option "clip_key_modifier" can be used to
  change the keyboard modifier such as none, alt, ctrl,
  shift, or disable this feature (default). (Wengier)
• Updated the PasteClipboard feature in SDL1 build
  to support Unicode text translations; also fixed this
  feature not working in SDL2 build. The config option
  "clip_paste_speed" is added to speed up or slow down
  the pasting speed for different DOS programs (Wengier)
• Support for DOSLIB2's w95sysrg/w95sysrs utils to
  get/set system registry location in DOS 7+. (Wengier)
• Long filename support added, adapted from
  the vDosPlus project. It will be enabled with
  an initial DOS version of 7.0 or higher. (Wengier)
• Corrected return value when using option to
  fake the installation of SHARE. (Allofich)
• Added code to EMS emulation to print specific
  debug information when a PC-98 specific call is
  made to remap segment B000h to either system
  memory or video memory. I do not have enough
  test cases or a setup to test what really happens,
  so it will remain a debug message for now.
• Added dosbox-x.conf option to allow emulation of a
  DOS environment that lacks ANSI.SYS. NOTE: The
  option has no effect in PC-98 mode.
• INT 2Fh now responds to AX=1A00h which is an installation
  check to report whether ANSI.SYS is resident.
• Added INT 21h debug logging for file I/O and general
  INT 21h usage [patch by ognjenmi]. Added enables for
  the logging which are off by default since the INT 21h
  and file I/O logging are fairly noisy under normal
  usage.

DOSBox-X 0.83.0 2020-03-01 00:33

0.83.0

• Added mt32.romdir dosbox.conf configuration option
  for users who store the MT32 ROMs elsewhere other
  than the current working directory.
• Configuration GUI settings menu is now vertically
  divided to ensure that it fits on the screen even
  if the window is at minimum size.
• PC-98 GDC status fixed to follow the explicit
  definition of one bit as hblank and the other
  as vsync instead of carrying over VGA port 3DAh
  style logic of hblank/vblank vs vsync. This
  fixes the BPS logo scanline effects in PC-98
  game 'frontier-universe-bps-neo-kobe-pc98-ia'
• Added dosbox.conf option to select between two
  known behaviors in PC-98 mode regarding the PC
  speaker and the PIT timer. The default behavior
  follows the newer hardware, the alternate setting
  is for older games written against the PC-9801
  behavior.
• Added dosbox.conf option nocachedir which, when
  set, instructs MOUNT to automatically act as if
  -nocachedir were given.
• Linux/X11 SDL1 builds fixed not to issue resize
  commands to the window to avoid fighting the
  window manager. This prevents "spastic resizing"
  under Gnome 3 in Centos 8.
• Source tree now includes build script for Linux
  users who prefer Clang/LLVM over GCC.

DOSBox-X 0.82.26 2020-01-31 17:18

0.82.26

• Debugger console window fixed to choose a smaller
  default size in Windows builds.
• Debugger console window now resizes properly
  in Windows builds.
• Using F10 (step over) in the debugger to step
  over INT 21h when a breakpoint for INT 21h is
  set now works correctly, instead of letting the
  instruction pointer "stick" there without moving.
• Debugger interface now shows (running/watching)
  while RUNWATCH is active.
• Debugger interface now correctly shows (running)
  status when F5 is used to resume emulation.
• Debugger toggle reverts back to debugger interface
  instead of running state if triggered during a
  RUNWATCH command.
• Fixed RUWNATCH command, which was broken by another
  fix sometime back designed to stop PIC event
  processing while in the debugger.
• Debugger interface fixed to keep the SDL event
  handling going during the "pager" routine to
  prevent Windows from graying out the main window
  as "not responding" in Windows 7/8/10.
• Direct3D support has been fixed to properly render
  pixel shaders again that were already written for
  other forks.
• Added "Rescan all drives" menu command and mapper
  shortcut (Issue #1379 requested by saintfrater)