2026.06.02

• DOS file search bugfix: Prevent undefined stat_block usage on failed
  ht_stat() calls. Use a separate variable for special file attribute
  checks to avoid reusing stat_block when it contains garbage values.
  This fixes issues on latest Darwin kernels. (cimarronm)

• Added function to config to load MS-DOS device drivers. The command is
  config -device -devparm . For example,
  to load OAKCDROM.SYS into memory, you could type:

  config -device C:\DOS\OAKCDROM.SYS -devparm "/D:CD001"

  which is equivalent to the DEVICE line in CONFIG.SYS:

  DEVICE=C:\DOS\OAKCDROM.SYS /D:CD001

  The goal is that DOSBox-X would fully support, through INT 21h and
  other interfaces, real device drivers instead of hard coding specific
  driver emulation. INT 21h would use the actual device chain instead
  of a built-in list. Built-in device emulation could appear properly
  in the device chain instead of fake entries.

  There seems to be interest on the DOSBox-X discussion and issue trackers
  of getting DOSBox-X to provide or emulate the MS-DOS/Windows 95 IFS
  driver to get Windows 95 to boot from a disk image in the native DOSBox-X
  environment, perhaps this would help enable that.

  At this time (in development), only INIT is called. (joncampbell123)

• External DOS device driver read/write: Optimize I/O by using larger
  read/write transfers (currently 16 based on how much memory is allocated
  for device driver I/O request and data). Until this change, the code
  used an extremely inefficient 1-byte read/write method to transfer
  to or from the device driver. (joncampbell123)

• DOS execute bugfix: While ownership was properly listed in the MCB for
  the PSP segment, the environment block associated with the program was
  always listed in the MCB as belonging to the parent process. This has
  been addressed (joncampbell123)

• Fix INT 21h AH=3Fh/40h READ/WRITE processing, when talking to an external
  MS-DOS device driver, so that the bytes actually processed by the driver
  are returned in AX to the DOS program, instead of giving the DOS program
  the impression that all were processed when they may not have been. (joncampbell123)

• CD Audio: Fix track not advancing at end of playback (maron2000)

• Fix geometry detection of qcow2 images (maron2000)

• Fixed advanced scaler rendering artifacts when machine type is MDA,
  Hercules, CGA, EGA, Tandy, or PCjr, or when SVGA 15/16bpp SVGA modes
  are active. CGA/EGA with Advanced MAME 2x/3x and HQ2X scalers should
  render correctly now. (joncampbell123)

• Added dosbox.conf [devices] section, which functions much like the
  DEVICE= lines in CONFIG.SYS to load MS-DOS device drivers at startup.
  Added support for RUN= lines to run commands like IMGMOUNT to help
  set up drive mounts and CD-ROM devices, or any other diagnostic
  purpose. While RUN= works just like the command shell, it is not
  intended to be a general command shell for running DOS games or
  applications that are unrelated to system startup. Added debugging
  options like ECHO which echo the command about to be run, and
  DEBUGBREAK which breaks into the debugger when starting the program
  or device driver. (joncampbell123)

• Added code to device driver loading which will, where possible,
  attempt to load the device driver as low as possible and pack it into
  the DOS kernel below the start of the MCB chain to resemble how
  device drivers are loaded in MS-DOS. (joncampbell123)

• Added debugger command "DOS DEVS" to list and enumerate the device
  drivers in the DOS kernel. Added code to BOOT --boothax msdos to
  track the location of the device driver list in the guest MS-DOS
  kernel so "DOS DEVS" can work there as well. (joncampbell123)

• DOSBox-X shell will now free any memory it allocated and close files
  that were opened on shutdown. This is important so that the CONFIG
  shell (used for loading device drivers) does not leave behind
  any memory it allocated when transferring control to the main
  command shell. However, do NOT release memory and do NOT close files
  on shell shutdown if the reason for the shutdown is the BOOT command.
  By the time normal shutdown occurs, the BOOT command has already
  overwritten low memory (and the MCB chain) with the guest OS's boot
  code, therefore freeing shell memory in that cause would only cause
  a complaint about a corrupted MCB chain and emulator E_Exit() shutdown.
  (joncampbell123)

• Fixed VHD, qcow2 image geometry calculation (maron2000)

• Fix CONFIG vs DOS shell to ensure the welcome screen is printed first
  before anything else on the console during startup. This is to help
  keep any output from programs and device drivers on screen where
  the user can see it (joncampbell123)

• Add basic support for MS-DOS block device drivers. If a block device
  driver succeeds, set up a disk image object and attach it to the
  FAT filesystem driver, and then a drive letter. At this time, this
  is enough for Microsoft RAMDRIVE.SYS to load and appear as a working
  drive letter in DOSBox-X (joncampbell123)

• CD-ROM device emulation is no longer strictly tied to MSCDEX emulation.
  While devices are still initialized through MSCDEX emulation, it is now
  possible for other parts of emulation to own a reference to it without
  MSCDEX. This means it is now possible for CD-ROM emulation to work
  after booting a guest OS without reaching back through MSCDEX emulation,
  and MSCDEX emulation can now unload properly with the rest of the DOS
  kernel. (joncampbell123)

• Fix bug where El Torito no emulation boot failed to notify the DOS
  kernel that the MCB chain is no longer valid, causing MCB chain corruption
  crashes. (joncampbell123)

• Added checks to sector I/O code to fix potential buffer overrun issues.
  (orbisai0security)

• Fixed logging of 'Packed file is corrupt' message detection (maron2000)

• Fixed upper 32-bit of LBA was always cleared (maron2000)

• Fix and revise MSCDEX and CD-ROM emulation to disentangle the two,
  so that MSCDEX no longer needs to remain in the background when BOOTed
  into a guest OS for IDE emulation to work. (joncampbell123)

• CD-ROM emulation updated to use reference counting to improve sharing
  of the image between IDE, MSCDEX, and general CD-ROM emulation.
  IDE emulation can hold on to a reference instead of constantly asking
  MSCDEX for it. (joncampbell123)

• Fix bug where mounting an invalid CUE file with no tracks caused DOSBox-X
  to crash. (joncampbell123)

• MSCDEX and CD-ROM emulation: Cleanup and centralize creation of CD-ROM
  interface objects, including the creation of the fake "empty" special
  interface used to emulate an empty CD-ROM drive. (joncampbell123)

• Revise MSCDEX emulation to separate the CD-ROM subunit and drive tracking
  from MSCDEX itself so that state can persist properly for a guest OS
  even when MSCDEX is shutdown during BOOT. (joncampbell123)

• Add -replace option to IMGMOUNT to allow changing the ISO image assigned
  to a CD-ROM drive without changing or altering the drive letter already
  assigned. -replace is strictly limited to CD-ROM drives where the drive
  letter is already assigned to that drive letter. (joncampbell123)

• Clean up the Drives menu for any drive letter assigned to a CD-ROM drive.
  Enable the "Mount a disk or CD image file" and "Mount multiple disk/CD images"
  even if the drive letter already has a CD-ROM drive attached, in which case
  the menu item just replaces it. Allow these menu items to work even when
  running a guest OS so that Windows 95 users can load any ISO image they
  want at any time, instead of having to pre-load all images they will need
  on a swap chain before BOOT. (joncampbell123)

• Replace ISO mounting code from the menu item to call more directly into
  IMGMOUNT to avoid making a commad shell object which would probably interfere
  with the guest OS. (joncampbell123)

• Enable the "Unmount drive" menu option under Drives for any drive attached
  to a CD-ROM drive while running a guest OS like Windows 95. When used in
  that scenario, it does not remove the drive letter, but instead acts like
  a command to eject the CD from the CD-ROM drive (swaps in the "empty"
  CD-ROM image). In the DOSBox-X environment "Unmount drive" will still
  unmount the drive and remove the drive letter as expected. (joncampbell123)

• "Swap disk" menu item under "Drives" is now enabled even while running a
  guest OS like Windows 95, if the drive is associated with a CD-ROM drive.
  Using the command rotates through the CD-ROM drive swap chain only for
  that specific drive, instead of all drives as the Swap CD mapper shortcut
  would do. (joncampbell123)

• IDE emulation: Skip the CD-ROM eject / unload / load delay if media change
  is swapping to the "empty" CD-ROM image object. (joncampbell123)

• Program object (base class of built-in commands) will no longer attempt to
  do anything with PSP segments or command line strings in memory if invoked
  while DOS kernel is disabled (running a guest OS). (joncampbell123)

• IDE ATAPI CD-ROM emulation: If the guest issues the START/STOP command
  to eject the CD-ROM drive, replace the CD-ROM image with the "empty" object
  to emulate a now-empty CD-ROM drive. (joncampbell123)

• Enable "Swap disk" menu command for floppy drives even while running a
  guest OS, as long as a floppy drive was already mounted there. (joncampbell123)

• BOOT: Fixed a regression of floppy image detection (maron2000)

• Sound Blaster DSP command 0x10 (Direct DAC) and Disney So...

2026.06.02

• DOS file search bugfix: Prevent undefined stat_block usage on failed
  ht_stat() calls. Use a separate variable for special file attribute
  checks to avoid reusing stat_block when it contains garbage values.
  This fixes issues on latest Darwin kernels. (cimarronm)

• Added function to config to load MS-DOS device drivers. The command is
  config -device -devparm . For example,
  to load OAKCDROM.SYS into memory, you could type:

  config -device C:\DOS\OAKCDROM.SYS -devparm "/D:CD001"

  which is equivalent to the DEVICE line in CONFIG.SYS:

  DEVICE=C:\DOS\OAKCDROM.SYS /D:CD001

  The goal is that DOSBox-X would fully support, through INT 21h and
  other interfaces, real device drivers instead of hard coding specific
  driver emulation. INT 21h would use the actual device chain instead
  of a built-in list. Built-in device emulation could appear properly
  in the device chain instead of fake entries.

  There seems to be interest on the DOSBox-X discussion and issue trackers
  of getting DOSBox-X to provide or emulate the MS-DOS/Windows 95 IFS
  driver to get Windows 95 to boot from a disk image in the native DOSBox-X
  environment, perhaps this would help enable that.

  At this time (in development), only INIT is called. (joncampbell123)

• External DOS device driver read/write: Optimize I/O by using larger
  read/write transfers (currently 16 based on how much memory is allocated
  for device driver I/O request and data). Until this change, the code
  used an extremely inefficient 1-byte read/write method to transfer
  to or from the device driver. (joncampbell123)

• DOS execute bugfix: While ownership was properly listed in the MCB for
  the PSP segment, the environment block associated with the program was
  always listed in the MCB as belonging to the parent process. This has
  been addressed (joncampbell123)

• Fix INT 21h AH=3Fh/40h READ/WRITE processing, when talking to an external
  MS-DOS device driver, so that the bytes actually processed by the driver
  are returned in AX to the DOS program, instead of giving the DOS program
  the impression that all were processed when they may not have been. (joncampbell123)

• CD Audio: Fix track not advancing at end of playback (maron2000)

• Fix geometry detection of qcow2 images (maron2000)

• Fixed advanced scaler rendering artifacts when machine type is MDA,
  Hercules, CGA, EGA, Tandy, or PCjr, or when SVGA 15/16bpp SVGA modes
  are active. CGA/EGA with Advanced MAME 2x/3x and HQ2X scalers should
  render correctly now. (joncampbell123)

• Added dosbox.conf [devices] section, which functions much like the
  DEVICE= lines in CONFIG.SYS to load MS-DOS device drivers at startup.
  Added support for RUN= lines to run commands like IMGMOUNT to help
  set up drive mounts and CD-ROM devices, or any other diagnostic
  purpose. While RUN= works just like the command shell, it is not
  intended to be a general command shell for running DOS games or
  applications that are unrelated to system startup. Added debugging
  options like ECHO which echo the command about to be run, and
  DEBUGBREAK which breaks into the debugger when starting the program
  or device driver. (joncampbell123)

• Added code to device driver loading which will, where possible,
  attempt to load the device driver as low as possible and pack it into
  the DOS kernel below the start of the MCB chain to resemble how
  device drivers are loaded in MS-DOS. (joncampbell123)

• Added debugger command "DOS DEVS" to list and enumerate the device
  drivers in the DOS kernel. Added code to BOOT --boothax msdos to
  track the location of the device driver list in the guest MS-DOS
  kernel so "DOS DEVS" can work there as well. (joncampbell123)

• DOSBox-X shell will now free any memory it allocated and close files
  that were opened on shutdown. This is important so that the CONFIG
  shell (used for loading device drivers) does not leave behind
  any memory it allocated when transferring control to the main
  command shell. However, do NOT release memory and do NOT close files
  on shell shutdown if the reason for the shutdown is the BOOT command.
  By the time normal shutdown occurs, the BOOT command has already
  overwritten low memory (and the MCB chain) with the guest OS's boot
  code, therefore freeing shell memory in that cause would only cause
  a complaint about a corrupted MCB chain and emulator E_Exit() shutdown.
  (joncampbell123)

• Fixed VHD, qcow2 image geometry calculation (maron2000)

• Fix CONFIG vs DOS shell to ensure the welcome screen is printed first
  before anything else on the console during startup. This is to help
  keep any output from programs and device drivers on screen where
  the user can see it (joncampbell123)

• Add basic support for MS-DOS block device drivers. If a block device
  driver succeeds, set up a disk image object and attach it to the
  FAT filesystem driver, and then a drive letter. At this time, this
  is enough for Microsoft RAMDRIVE.SYS to load and appear as a working
  drive letter in DOSBox-X (joncampbell123)

• CD-ROM device emulation is no longer strictly tied to MSCDEX emulation.
  While devices are still initialized through MSCDEX emulation, it is now
  possible for other parts of emulation to own a reference to it without
  MSCDEX. This means it is now possible for CD-ROM emulation to work
  after booting a guest OS without reaching back through MSCDEX emulation,
  and MSCDEX emulation can now unload properly with the rest of the DOS
  kernel. (joncampbell123)

• Fix bug where El Torito no emulation boot failed to notify the DOS
  kernel that the MCB chain is no longer valid, causing MCB chain corruption
  crashes. (joncampbell123)

• Added checks to sector I/O code to fix potential buffer overrun issues.
  (orbisai0security)

• Fixed logging of 'Packed file is corrupt' message detection (maron2000)

• Fixed upper 32-bit of LBA was always cleared (maron2000)

• Fix and revise MSCDEX and CD-ROM emulation to disentangle the two,
  so that MSCDEX no longer needs to remain in the background when BOOTed
  into a guest OS for IDE emulation to work. (joncampbell123)

• CD-ROM emulation updated to use reference counting to improve sharing
  of the image between IDE, MSCDEX, and general CD-ROM emulation.
  IDE emulation can hold on to a reference instead of constantly asking
  MSCDEX for it. (joncampbell123)

• Fix bug where mounting an invalid CUE file with no tracks caused DOSBox-X
  to crash. (joncampbell123)

• MSCDEX and CD-ROM emulation: Cleanup and centralize creation of CD-ROM
  interface objects, including the creation of the fake "empty" special
  interface used to emulate an empty CD-ROM drive. (joncampbell123)

• Revise MSCDEX emulation to separate the CD-ROM subunit and drive tracking
  from MSCDEX itself so that state can persist properly for a guest OS
  even when MSCDEX is shutdown during BOOT. (joncampbell123)

• Add -replace option to IMGMOUNT to allow changing the ISO image assigned
  to a CD-ROM drive without changing or altering the drive letter already
  assigned. -replace is strictly limited to CD-ROM drives where the drive
  letter is already assigned to that drive letter. (joncampbell123)

• Clean up the Drives menu for any drive letter assigned to a CD-ROM drive.
  Enable the "Mount a disk or CD image file" and "Mount multiple disk/CD images"
  even if the drive letter already has a CD-ROM drive attached, in which case
  the menu item just replaces it. Allow these menu items to work even when
  running a guest OS so that Windows 95 users can load any ISO image they
  want at any time, instead of having to pre-load all images they will need
  on a swap chain before BOOT. (joncampbell123)

• Replace ISO mounting code from the menu item to call more directly into
  IMGMOUNT to avoid making a commad shell object which would probably interfere
  with the guest OS. (joncampbell123)

• Enable the "Unmount drive" menu option under Drives for any drive attached
  to a CD-ROM drive while running a guest OS like Windows 95. When used in
  that scenario, it does not remove the drive letter, but instead acts like
  a command to eject the CD from the CD-ROM drive (swaps in the "empty"
  CD-ROM image). In the DOSBox-X environment "Unmount drive" will still
  unmount the drive and remove the drive letter as expected. (joncampbell123)

• "Swap disk" menu item under "Drives" is now enabled even while running a
  guest OS like Windows 95, if the drive is associated with a CD-ROM drive.
  Using the command rotates through the CD-ROM drive swap chain only for
  that specific drive, instead of all drives as the Swap CD mapper shortcut
  would do. (joncampbell123)

• IDE emulation: Skip the CD-ROM eject / unload / load delay if media change
  is swapping to the "empty" CD-ROM image object. (joncampbell123)

• Program object (base class of built-in commands) will no longer attempt to
  do anything with PSP segments or command line strings in memory if invoked
  while DOS kernel is disabled (running a guest OS). (joncampbell123)

• IDE ATAPI CD-ROM emulation: If the guest issues the START/STOP command
  to eject the CD-ROM drive, replace the CD-ROM image with the "empty" object
  to emulate a now-empty CD-ROM drive. (joncampbell123)

• Enable "Swap disk" menu command for floppy drives even while running a
  guest OS, as long as a floppy drive was already mounted there. (joncampbell123)

• BOOT: Fixed a regression of floppy image detection (maron2000)

• Sound Blaster DSP command 0x10 (Direct DAC) and Disney So...

2026.05.02

• DOSBox-X will now check both the current directory and the .config
  directory in your home directory for DOSBox-X logo PNG files.
  It is now possible to configure one set of PNG files as a default
  for all uses of DOSBox-X from your user account. (joncampbell123).
• src/gui/render.cpp: Added missing ifdef conditional on C_METAL to enable
  building on macOS platforms without Metal support. (herrnst)
• Fixed Metal support detection: add framework linker flags to configure
  check (maron2000)
• Fixed window position not centered even when windowposition option is set
  to do so. (maron2000)
• Fixed MSCDEX device name padding for short names (maron2000)
• When DOS games use the Adlib FM chip to do "digitized speech", DOSBox-X
  does emulate that correctly, and it also correctly emulates how low
  the volume is on the sound card output. However to make it more
  audible, a new option "adlib pcm boost" has been added. If set,
  and the Adlib emulation detects that the guest application is
  playing PCM audio through it, the audio levels of the FM output
  will be amplified to make the digitized speech much more audible.
  (joncampbell123)
• Fixed mapping of TTF to match with guest codepage when launched with
  output=ttf. (maron2000)
• Limit window size of TTF output to 2/3rd of the screen in both
  dimensions so that the window is not TOO large on the user's screen.
  (joncampbell123)
• Fix segfault in TTF output code caused by codepage mapping when the
  TTF output is not active. (joncampbell123)
• Fixed clip_paste_bios option change was not reflected. Also, default is
  changed to "true" for Windows due to some characters fails to paste when
  set otherwise. (maron2000)
• Replaced some deprecated functions in dosbox.h. (maron2000)
• Fixed colors in the screenshot of macOS SDL1 build were wrong.(maron2000)
• Fix savestate restore crash in POD_Load_DOS_Files during live file slot
  teardown (catbalony)
• Fixed mouse cursor display in DOS/V Japanese mode (nanshiki)
• INT 13h AH=48h: Fixed LBA detection (maron2000)
• Fixed read/write errors on last sectors of disk image (maron2000)
• Int 13h: Added option to enable/disable 48-bit LBA support (maron2000)
• Fix VHD file geometry detection (maron2000)
• Fixed crash when printing out multipages to printer (Windows) (maron2000)
• printer.cpp: Fix occasional missing page break after line wrap (maron2000)

2026.05.02

• DOSBox-X will now check both the current directory and the .config
  directory in your home directory for DOSBox-X logo PNG files.
  It is now possible to configure one set of PNG files as a default
  for all uses of DOSBox-X from your user account. (joncampbell123).
• src/gui/render.cpp: Added missing ifdef conditional on C_METAL to enable
  building on macOS platforms without Metal support. (herrnst)
• Fixed Metal support detection: add framework linker flags to configure
  check (maron2000)
• Fixed window position not centered even when windowposition option is set
  to do so. (maron2000)
• Fixed MSCDEX device name padding for short names (maron2000)
• When DOS games use the Adlib FM chip to do "digitized speech", DOSBox-X
  does emulate that correctly, and it also correctly emulates how low
  the volume is on the sound card output. However to make it more
  audible, a new option "adlib pcm boost" has been added. If set,
  and the Adlib emulation detects that the guest application is
  playing PCM audio through it, the audio levels of the FM output
  will be amplified to make the digitized speech much more audible.
  (joncampbell123)
• Fixed mapping of TTF to match with guest codepage when launched with
  output=ttf. (maron2000)
• Limit window size of TTF output to 2/3rd of the screen in both
  dimensions so that the window is not TOO large on the user's screen.
  (joncampbell123)
• Fix segfault in TTF output code caused by codepage mapping when the
  TTF output is not active. (joncampbell123)
• Fixed clip_paste_bios option change was not reflected. Also, default is
  changed to "true" for Windows due to some characters fails to paste when
  set otherwise. (maron2000)
• Replaced some deprecated functions in dosbox.h. (maron2000)
• Fixed colors in the screenshot of macOS SDL1 build were wrong.(maron2000)
• Fix savestate restore crash in POD_Load_DOS_Files during live file slot
  teardown (catbalony)
• Fixed mouse cursor display in DOS/V Japanese mode (nanshiki)
• INT 13h AH=48h: Fixed LBA detection (maron2000)
• Fixed read/write errors on last sectors of disk image (maron2000)
• Int 13h: Added option to enable/disable 48-bit LBA support (maron2000)
• Fix VHD file geometry detection (maron2000)
• Fixed crash when printing out multipages to printer (Windows) (maron2000)
• printer.cpp: Fix occasional missing page break after line wrap (maron2000)

2026.03.29

• Add dosbox.conf option to control the duration of the beep when
  DOS CON and INT 10h are given the BEL character. (joncampbell123).
• DOS CON device BEL (beep) handling: For IBM PC modes, call on
  INT 10h to make the beep, rather than duplicate code. Fix the
  DOS CON device so that it can also properly beep in PC-98 mode.
  (joncampbell123).
• Fix bug where the "zero memory on DOS allocation" option was
  stuck on. Some games, like "Bad Cat" rely on memory contents
  peristing across DOS EXEC and memory allocation. (joncampbell123).
• Fix Hercules palette selection related to herc blend. (joncampbell123).
• DOS kernel: When executing an EXE file, the loader can now detect
  EXE files that were compressed using EXEPACK. Based on the new
  exepack dosbox.conf setting, it can decompress the EXE by itself,
  switch off the A20 gate, or do nothing. The purpose of this
  setting is to avoid EXEPACK "Packed File is Corrupt" errors that
  happen if the A20 gate is enabled and the EXE was loaded too low
  in memory. (joncampbell123).
• Linux SDL1: Use XDG_SESSION_TYPE environment variable to detect
  whether or not the user is running DOSBox-X under X11 or Wayland,
  and if so, prevent the fbcon and svga drivers from initializing.
  There seems to be a problem where, if run under Wayland and the
  XWayland compatibility layer if not present, SDL1 uses the fbcon
  driver to take over the screen using vtcon switching and the classic
  fbdev driver interface. Don't do that! (joncampbell123).
• INT 21h AH=4Ah resize memory: If memory resize fails because there
  is not enough room for the requested amount of memory, do not
  set ownership of the block to the program. This fixes memory
  allocation error in California Games II. The game at one point
  seems to miscalculate and ask for an excessively large amount
  of memory on resize, and then fail, which doesn't seem to affect
  the game. HOWEVER, prior to the bugfix, the memory block that
  was available was assigned ownership to the game anyway. Later
  on after helicopter takeoff, the game would attempt to allocate
  more memory, which would fail because of the erroneous assignment
  of ownership to free memory. (joncampbell123).
• Add debug logging to not only indicate DOS kernel memory alloc,
  free, and resize, but also log when the memory operation fails.
  Perhaps someday I'll figure out what the memory management in
  California Games II is doing wrong that makes the helicopter part
  fail in DOSBox-X. (joncampbell123).
• Code development now occurs across two primary branches: master
  for fully functional emulation, and main-osfree for versions of
  DOSBox-X where built-in MS-DOS OS emulation is disabled. The osfree
  branch can only boot a guest OS. main-osfree is for use in jurisdictions
  that enforce or wish to enforce OS level age verification, and
  therefore, may consider the MS-DOS emulation an OS that is subject
  to those laws. (joncampbell123).
• El Torito CD-ROM floppy disk boot emulation is no longer as slow
  as an actual floppy drive. Your bootable CDs will boot much faster
  now. (joncampbell123).
• DOSBox-X shell: If a DOS error happened while trying to execute a
  DOS program, read the error code and print an appropriate message
  on the console. So far only "Access Denied" has any specific error
  message there. (joncampbell123).
• Skip all keyboard code page and layout loading if running in PC-98
  mode. PC-98 systems store the entire font in ROM with only very
  limited room for custom fonts, therefore, it makes no sense to load
  code pages in PC-98 mode. (joncampbell123).
• Keyboard code page layout: Fix bug where an out of range start_pos
  can cause DOSBox-X to segfault. Range check and print an error
  message instead. (joncampbell123).
• Keyboard code page layout: The UPX unpacker checks the stack pointer
  (like a COM program would) to determine if there is enough memory
  to decompress. If there is not, it executes INT 20h to exit to DOS.
  Problem is, the code page execution never makes a proper PSP segment
  for that to work, so, during execution, intercept INT 20h and safely
  redirect execution to exit properly when called. Set an error flag
  so the code can know if that happened and say so. (joncampbell123).
• Keyboard code page layout: If executing the CPI/CPX file because UPX
  decompression is detected, allocate memory based on the size of the
  file plus reasonable stack space rather than assume about 128KB of
  RAM following a DOS allocation of less, which for lower memsizes,
  only causes a crash on startup. (joncampbell123).
• Debug print to log what code page file is being loaded at startup (joncampbell123).
• CPU Idle callback is now strictly limited to processing IRQs and one
  CPU instruction, instead of however many CPU instructions can run
  until the next scheduled emulator event. This fixes a bug where
  system calls that use the Idle callback (INT 21h, etc) can sometimes
  vary their delay time by emulator events, and if "scanline render on
  demand is enabled", can cause the Idle call to take a full 1ms interval
  of time. This fixes an issue where "scanline render on demand" caused
  some DOS games like Xargon to take 5 to 10 times longer to transition
  between title, main menu, gameplay, etc. (joncampbell123).
• Debugger LOGL command now includes the PIC_FullIndex() emulator time
  in millseconds so that it can be used to determine time as well as
  CPU state for debugging (joncampbell123).
• Add dosbox.conf option to control whether VBE emulation provides the
  protected mode interface or not (joncampbell123).
• Add dosbox.conf option vbememsize and vbememsizekb to control how much
  video memory is reported through the VESA BIOS, which can be less than
  actual video memory (but must be at least 256KB). This option can help
  with some DOS programs that have problems with "too much" video memory
  in the system (joncampbell123).
• Add INT 10h mode flag _REQUIRE_LFB. When set, INT 10h calls to set
  VESA BIOS modes will fail unless requesting to set the linear framebuffer
  version of the mode (joncampbell123).
• S3 emulation will mark any more large enough to exceed bank switching
  limits in S3 hardware as _REQUIRE_LFB (joncampbell123).
• I'm not sure why Adlib emulation defaults to 48KHz in most versions of
  DOSBox, but the hardware rate is 49716 and that should be the default
  (joncampbell123).
• Fixed crash on starting debugger on MinGW builds (maron2000)
• Adjusted the ChinaSea/Big5-2003 extended code point ranges for CP951 to
  0x9140–0xA3FE and 0xC6A1–0xFEFE (1abcd)
• Replaced deprecated symbols to enable launching on old macOSs (maron2000)
• Converted all bash-dependent shell files to POSIX-shell compliant
  (pandasoli)
• Removed 7 duplicate Chinese character mappings from CP951 (Big5-UAO) (1abcd)
• Added SoundBlaster microphone input support (Windows WASAPI)
  (meldro364-glitch)
• Fixed segfault on launch of macOS builds (maron2000)
• Added OS/2 support for tinyfiledialogs, browser and external programs and
  some more fixes. (josch1710)
• Fixed savestate load "Memory size mismatch" error on MSVC build (rebb)
• Fixed savestate loading crash related to dynamically allocated TempLine in
  VGA system (rebb)
• Added Direct3D11 and Metal support (Experimental, SDL2 only) (maron2000)
• When leaving fullscreen, only force rebuilding the window for OpenGL mode.
  (rebb)
• Clear modifier keys before savestate gets saved. (rebb)
• Re-enabled WinMM joystick support (Windows SDL1) (maron2000)
• Fixed colors option fails at launch on TTF mode (maron2000)
• Optional switch to disable post exit delay in DX-CAPTURE (villesundell)
• Fixed Emscripten builds for Dosbox x v2026.01.02 (grootpot)
• Fixed long freeze during startup on linux (SmileTheory)
• Fixed windowposition option at launch (maron2000)
• Fixed detection of EXEPACK failures (maron2000)
• Added OS/2 dimension handling to UpdateWindowDimensions (josch1710)
• Fixed handling of volume label searches (Allofich)
• Microphone input: Make Hands-Free profile (HFP) optional (maron2000)
• macOS: Fixed build script typo that made loading freetype library fail
  (maron2000)
• Fixed FPU FILD emulation (asemarafa)
• Removed range check in INT10_GetCursorPos causing text glitches (maron2000)
• Added experimental VS2026 CI builds. Can be downloaded as 64-bit Visual
  Studio nightly builds. (maron2000)
• macOS: Fixed garbled message when opening image file(s) from dropdown menu.
  (maron2000)
• Fixed XCOPY argument parsing to correctly handle switches appended directly
  to file paths without whitespace. (maron2000)
• Fixed some Yes/No character was remained hardcoded as Y/N for some languages
  specifiying other characters (e.g. German). (maron2000)

2026.03.29

• Add dosbox.conf option to control the duration of the beep when
  DOS CON and INT 10h are given the BEL character. (joncampbell123).
• DOS CON device BEL (beep) handling: For IBM PC modes, call on
  INT 10h to make the beep, rather than duplicate code. Fix the
  DOS CON device so that it can also properly beep in PC-98 mode.
  (joncampbell123).
• Fix bug where the "zero memory on DOS allocation" option was
  stuck on. Some games, like "Bad Cat" rely on memory contents
  peristing across DOS EXEC and memory allocation. (joncampbell123).
• Fix Hercules palette selection related to herc blend. (joncampbell123).
• DOS kernel: When executing an EXE file, the loader can now detect
  EXE files that were compressed using EXEPACK. Based on the new
  exepack dosbox.conf setting, it can decompress the EXE by itself,
  switch off the A20 gate, or do nothing. The purpose of this
  setting is to avoid EXEPACK "Packed File is Corrupt" errors that
  happen if the A20 gate is enabled and the EXE was loaded too low
  in memory. (joncampbell123).
• Linux SDL1: Use XDG_SESSION_TYPE environment variable to detect
  whether or not the user is running DOSBox-X under X11 or Wayland,
  and if so, prevent the fbcon and svga drivers from initializing.
  There seems to be a problem where, if run under Wayland and the
  XWayland compatibility layer if not present, SDL1 uses the fbcon
  driver to take over the screen using vtcon switching and the classic
  fbdev driver interface. Don't do that! (joncampbell123).
• INT 21h AH=4Ah resize memory: If memory resize fails because there
  is not enough room for the requested amount of memory, do not
  set ownership of the block to the program. This fixes memory
  allocation error in California Games II. The game at one point
  seems to miscalculate and ask for an excessively large amount
  of memory on resize, and then fail, which doesn't seem to affect
  the game. HOWEVER, prior to the bugfix, the memory block that
  was available was assigned ownership to the game anyway. Later
  on after helicopter takeoff, the game would attempt to allocate
  more memory, which would fail because of the erroneous assignment
  of ownership to free memory. (joncampbell123).
• Add debug logging to not only indicate DOS kernel memory alloc,
  free, and resize, but also log when the memory operation fails.
  Perhaps someday I'll figure out what the memory management in
  California Games II is doing wrong that makes the helicopter part
  fail in DOSBox-X. (joncampbell123).
• Code development now occurs across two primary branches: master
  for fully functional emulation, and main-osfree for versions of
  DOSBox-X where built-in MS-DOS OS emulation is disabled. The osfree
  branch can only boot a guest OS. main-osfree is for use in jurisdictions
  that enforce or wish to enforce OS level age verification, and
  therefore, may consider the MS-DOS emulation an OS that is subject
  to those laws. (joncampbell123).
• El Torito CD-ROM floppy disk boot emulation is no longer as slow
  as an actual floppy drive. Your bootable CDs will boot much faster
  now. (joncampbell123).
• DOSBox-X shell: If a DOS error happened while trying to execute a
  DOS program, read the error code and print an appropriate message
  on the console. So far only "Access Denied" has any specific error
  message there. (joncampbell123).
• Skip all keyboard code page and layout loading if running in PC-98
  mode. PC-98 systems store the entire font in ROM with only very
  limited room for custom fonts, therefore, it makes no sense to load
  code pages in PC-98 mode. (joncampbell123).
• Keyboard code page layout: Fix bug where an out of range start_pos
  can cause DOSBox-X to segfault. Range check and print an error
  message instead. (joncampbell123).
• Keyboard code page layout: The UPX unpacker checks the stack pointer
  (like a COM program would) to determine if there is enough memory
  to decompress. If there is not, it executes INT 20h to exit to DOS.
  Problem is, the code page execution never makes a proper PSP segment
  for that to work, so, during execution, intercept INT 20h and safely
  redirect execution to exit properly when called. Set an error flag
  so the code can know if that happened and say so. (joncampbell123).
• Keyboard code page layout: If executing the CPI/CPX file because UPX
  decompression is detected, allocate memory based on the size of the
  file plus reasonable stack space rather than assume about 128KB of
  RAM following a DOS allocation of less, which for lower memsizes,
  only causes a crash on startup. (joncampbell123).
• Debug print to log what code page file is being loaded at startup (joncampbell123).
• CPU Idle callback is now strictly limited to processing IRQs and one
  CPU instruction, instead of however many CPU instructions can run
  until the next scheduled emulator event. This fixes a bug where
  system calls that use the Idle callback (INT 21h, etc) can sometimes
  vary their delay time by emulator events, and if "scanline render on
  demand is enabled", can cause the Idle call to take a full 1ms interval
  of time. This fixes an issue where "scanline render on demand" caused
  some DOS games like Xargon to take 5 to 10 times longer to transition
  between title, main menu, gameplay, etc. (joncampbell123).
• Debugger LOGL command now includes the PIC_FullIndex() emulator time
  in millseconds so that it can be used to determine time as well as
  CPU state for debugging (joncampbell123).
• Add dosbox.conf option to control whether VBE emulation provides the
  protected mode interface or not (joncampbell123).
• Add dosbox.conf option vbememsize and vbememsizekb to control how much
  video memory is reported through the VESA BIOS, which can be less than
  actual video memory (but must be at least 256KB). This option can help
  with some DOS programs that have problems with "too much" video memory
  in the system (joncampbell123).
• Add INT 10h mode flag _REQUIRE_LFB. When set, INT 10h calls to set
  VESA BIOS modes will fail unless requesting to set the linear framebuffer
  version of the mode (joncampbell123).
• S3 emulation will mark any more large enough to exceed bank switching
  limits in S3 hardware as _REQUIRE_LFB (joncampbell123).
• I'm not sure why Adlib emulation defaults to 48KHz in most versions of
  DOSBox, but the hardware rate is 49716 and that should be the default
  (joncampbell123).
• Fixed crash on starting debugger on MinGW builds (maron2000)
• Adjusted the ChinaSea/Big5-2003 extended code point ranges for CP951 to
  0x9140–0xA3FE and 0xC6A1–0xFEFE (1abcd)
• Replaced deprecated symbols to enable launching on old macOSs (maron2000)
• Converted all bash-dependent shell files to POSIX-shell compliant
  (pandasoli)
• Removed 7 duplicate Chinese character mappings from CP951 (Big5-UAO) (1abcd)
• Added SoundBlaster microphone input support (Windows WASAPI)
  (meldro364-glitch)
• Fixed segfault on launch of macOS builds (maron2000)
• Added OS/2 support for tinyfiledialogs, browser and external programs and
  some more fixes. (josch1710)
• Fixed savestate load "Memory size mismatch" error on MSVC build (rebb)
• Fixed savestate loading crash related to dynamically allocated TempLine in
  VGA system (rebb)
• Added Direct3D11 and Metal support (Experimental, SDL2 only) (maron2000)
• When leaving fullscreen, only force rebuilding the window for OpenGL mode.
  (rebb)
• Clear modifier keys before savestate gets saved. (rebb)
• Re-enabled WinMM joystick support (Windows SDL1) (maron2000)
• Fixed colors option fails at launch on TTF mode (maron2000)
• Optional switch to disable post exit delay in DX-CAPTURE (villesundell)
• Fixed Emscripten builds for Dosbox x v2026.01.02 (grootpot)
• Fixed long freeze during startup on linux (SmileTheory)
• Fixed windowposition option at launch (maron2000)
• Fixed detection of EXEPACK failures (maron2000)
• Added OS/2 dimension handling to UpdateWindowDimensions (josch1710)
• Fixed handling of volume label searches (Allofich)
• Microphone input: Make Hands-Free profile (HFP) optional (maron2000)
• macOS: Fixed build script typo that made loading freetype library fail
  (maron2000)
• Fixed FPU FILD emulation (asemarafa)
• Removed range check in INT10_GetCursorPos causing text glitches (maron2000)
• Added experimental VS2026 CI builds. Can be downloaded as 64-bit Visual
  Studio nightly builds. (maron2000)
• macOS: Fixed garbled message when opening image file(s) from dropdown menu.
  (maron2000)
• Fixed XCOPY argument parsing to correctly handle switches appended directly
  to file paths without whitespace. (maron2000)
• Fixed some Yes/No character was remained hardcoded as Y/N for some languages
  specifiying other characters (e.g. German). (maron2000)

2026.01.02

• VESA BIOS will remove 8-bit bank switching limit if the video memory
  is large enough to need more than 256 banks. Memory size will always
  be limited to no more than 64 banks (128 if smaller than 64KB
  granularity) only if S3 emulation is active. DOSBox Integrated Graphics
  machine type is exempt from bank switching limit, so, if you are running
  legacy code or Demoscene stuff against it that never clears the upper
  8 bits properly, it's not going to work unless you use smaller memsize
  settings. (joncampbell123).
• Update BOOT command to support multiple disk images with swapping (maron2000).
• Render scaler system has been modified so that render and frame caches
  are now dynamically allocated, instead of fixed buffers. Not only does
  this reduce memory wasted by over-large buffers, it also removes
  limitations on guest video mode resolution that previously capped the
  video mode to 1920x1440 or lower, and the advanced scalers (HQ2X,
  Advanced MAME, etc) to 800x600 or lower. (joncampbell123).
• VGA output will now automatically disable doublescan mode whenever an
  advanced scaler, such as the "XBRZ" or the Advanced MAME scalers, are
  selected, so that the scalers can do their job properly on the low
  resolution graphics mode automatically. The user no longer has to
  manaully turn off doublescan mode for those scalers to work. (joncampbell123).
• Added TV, Scanline, and RGB scaler variants appropriate for VGA
  200-line modes with doublescan enabled (renders to 400 lines). In fact
  supporting those scalers with 400-line VGA is arguably more visually
  accurate than applying them to 200 lines of graphics, because it
  better reflects the actual 400-line raster as it would be displayed
  on a VGA monitor. (joncampbell123).
• Apparently at random, VGA render will call RENDER_DrawLine too much,
  causing buffer overruns at random, so, instead of directly assigning
  the scaler line handler, assign a function that checks the rendered
  line count and ensures that rendering stops at the correct line
  count. This should fix some random crashes or corruptions, especially
  on Linux with the OpenGL output which likes to allocate EXACTLY the
  amount of memory required for the frame. (joncampbell123).
• A patch was submitted to DOSLIB DSXMENU to incorporate non-selectable
  informational lines of text. Incorporate the updated DSXMENU binaries
  into DOSBox-X (joncampbell123).
• Wrote IPS patching tools IPSMAKE and IPSPATCH in DOSLIB, then incorporated
  them as builtin executables on drive Z: under Z:\PATCHING. You can
  now use IPS patch files to "ROM hack" your MS-DOS games. (joncampbell123)
• Add map13/map14 CGA/HGC like interleaved rendering support for VGA
  256-color mode. There is a game engine in development that is willing to
  use such oddball modes. (joncampbell123)
• Added SDL2_net to source tree (maron2000)
• Fixed regression of FIFA96 CD label detection (maron2000)
• Log OpenGL context version (rebb)
• Force SDL window regeneration when exiting fullscreen (rebb)
• Fixed file handle leak prevents save state file removal (srcdabada)

2025.12.01

• Video debug overlay: For Tandy and PCjr emulation, add information on
  the screen that shows the line mask, display and cpu memory banks and
  the corresponding segment values, which may aid in debugging issues
  with games and reveal any remapping or page flipping (joncampbell123).
• Tandy emulation: Add the string "Tandy" somewhere in the DOS kernel
  at startup if machine=tandy. The game "The Train: Escape to Normandy"
  scans from FFFF:0000 for the string "Tandy" which of course wraps
  around to the first 64KB of memory where the DOS kernel resides. If
  it does not see this string, it does not think it is running on a Tandy.
  Such a detection routine will obviously break if you're on a 286 based
  Tandy with HMA enabled, or you're running normal MS-DOS on a Tandy
  system. This change allows the game to run (joncampbell123).
• Tseng ET4000 emulation: Mode 0x24 is unusual in that it is a 130x28
  text mode with a 13-pixel high character cell. The ET4000 VGA BIOS
  apparently has a specific font for that mode, so, incorporate that
  font into DOSBox-X and use it for mode 0x24 (joncampbell123).
• Tseng ET4000 emulation: Fix modes 0x22/0x23/0x24 to match how the
  actual VGA BIOS programs them. This fixes problems where the 132x25
  mode was rendered only on the upper half of the screen (joncampbell123).
• Fix Tseng ET3000/ET4000 emulation bug where CGA graphics modes
  were garbled. The main VGA emulation no longer uses M_CGA2/M_CGA4
  and the ET4000 emulation needs to behave the same to fix the
  graphics modes. Apply fix to ET3000 emulation as well. (joncampbell123).
• Some extra code in shell processing was preventing drive change commands
  if the last character was a backslash i.e. "a:" instead of "a:".
  Fixed. (joncampbell123).
• INT 21h AH=4Bh EXEC: Real MS-DOS returns a nonzero value like 0x3E01.
  A buggy version of Magic Pockets fails to call INT 21 AH=4Dh to read
  the INTRO.EXE exit code and expects AL to just be nonzero to continue
  to the game. So to make it work properly (kind of), return a nonzero
  value. (joncampbell123).
• Tandy machine type: Many registers are WRITE ONLY according to SX
  documentation, yet "Troubadours" likes to read/modify/write those
  registers in what appears to be hand-rolled manual modesetting code
  to set up 320x200 16-color mode, so, add code to respond to reads
  from those ports with zeros and print a debug message to the log
  about how DOS games are not supposed to read those registers. Make
  the hand-rolled modesetting work by returning 0x00, rather than 0xFF.
  The code will not set up the mode correctly if 0xFF is returned, but
  will if 0x00 is returned. A side effect of this is that, since one
  of the registers controls the RAM address used as video memory, this
  moves it down to 512KB from base memory as well, which of course
  easily corrupts the very end of the MCB chain unless you enable more
  than 640KB of RAM and ask DOSBox-X to emulate the full Tandy 768KB
  of conventional memory. Though the game still crashes very easily,
  and in the exact same manner in both DOSBox-X and DOSBox SVN, this
  fix does solve the problem where the game was only able to draw
  2 out of 4 scanlines on the screen. (joncampbell123).

2025.10.07

• INT 21h AH=4Ah resize memory: Compact free blocks only at or after the
  segment being resized, as MS-DOS is documented to do (joncampbell123).
• INT 21h AH=4Ah resize memory: Fix bug where, if asked to resize a previously
  freed memory block and the block is not the last block in the MCB chain,
  and the next block in the MCB chain is also free, the MCB management code
  would correctly compact free blocks but then allocate according to the
  old size of the freed MCB block, causing truncation of the MCB chain.
  Fix for MCB chain truncation caused by California Games II DOS memory
  management when running in Tandy graphics mode. (joncampbell123).
• Add dosbox.conf option, disabled by default, where if the MCB memory
  chain is corrupted anywhere past the running program's memory block,
  and it does anything to cause allocation, a new free memory block is
  created to satisfy allocations instead of halting emulation. Some DOS
  programs are a bit sloppy in a way that can corrupt the MCB chain.
  When enabled, this behavior matches apparent MS-DOS behavior (joncampbell123).
• Debugger: DOS MCBS command now also prints the segment immediately
  following the last MCB block (joncampbell123).
• Tseng ET3000/ET4000: Update Status register 3DAh behavior when emulating
  Tseng chipsets to reflect Tseng datasheet, and VGAKIT SVGA detection code
  expectations. Bit 7 is expected, as documented by Tseng, to be the inverse
  of bit 3 (vertical retrace). Extended Start Register CRTC 33h must not
  allow setting the upper 4 bits because Tseng only documents the bottom
  four, and because VGAKIT requires it for Tseng detection (joncampbell123).
• Fix bug that, for machine=hercules, prevented Hercules palette shortcut
  from changing colors when in graphics mode (joncampbell123).
• Remove mixer and VGA capture test modes from integration device. Update
  integration device version number. Convert hardcoded magic constants used
  in IG into constants in iglib.h which is now shared explicitly with the
  iglib.h in DOSLIB. Add integration device interface to allow the guest
  to read and set the CPU cycle count of the emulator. (joncampbell123).
• Fix INT 10h AH=0Eh bug where printing BEL triggered screen scroll up if
  cursor beyond the last line. Fix for the Elder Scrolls Arena installer.
  (joncampbell123).
• FAT filesystem driver (for disk images): If Elder Scrolls Arena calls
  INT 21h to find files named *.65 (such as STATES.65) with an attribute mask
  of 0xA (VOLUME LABEL | HIDDEN), ignore the VOLUME LABEL bit and scan
  normally. The 0xA value is leftover from a divide operation used to make
  the file name and is technically a bug in the game, though that happens
  to work on real MS-DOS and the DOSBox/DOSBox-X local folder support code
  anyway. This fix allows Elder Scrolls Arena to run from a mounted disk
  image. (joncampbell123).
• FAT filesystem driver (for disk images): If Elder Scrolls Arena calls
  INT 21h to find SAVEGAME.00 (yes, a specific name for some reason) with
  an attribute mask of 0x7C (which represents... um... what?), ignore the
  VOLUME LABEL bit so that players can load their saved games from the
  menu instead of being told that the saved game that is clearly there on
  the screen does not exist. What other weird random values of CX attribute
  mask does this game use? (joncampbell123).
• PCI bus improvements : Allow device to see full size access (smunaut)
• Fix build error of SDL1 version on ArchLinux (possibly gcc-15) (maron2000)
• Enable building DOSBox-X on older macOS versions and add instructions
  (maron2000)
• Add code page 951 in dialog box (1abcd)
• Fix failure of create/opening a temporary file for piping (maron2000)
• Create/open a temporary file to device_TMP for piping on Z: drive.
  (maron2000)
• Convert message to UTF16 before calling messagebox function (Windows)
  (maron2000)
• Added some new members to the MMX_reg union for big-endian platforms.
  (alarixnia)
• Create directory if not exist before writing conf file. (maron2000)
• Fixed language files were still locked after loading is completed.
  (maron2000)
• Fixed freeze when codepage switched to 3846, 3848. (maron2000)
• Fixed build error when internal debugger is disabled (maron2000)
• Show loaded conf file in log in full path (maron2000)
• Print syntax error if pipe has no command to pass output (maron2000)
• Add permanent option for initial DOSBox-X shell (maron2000)
• Fix errors when initializing fluidsynth (maron2000)
• PC-98: Redraw the function keys after updating them (bobsayshilol)
• Do not carriage return with a single LF('\n') (maron2000)
• Fix mapper not rendering anything on SDL2/Windows (aybe)
• Scale mapper according display resolution (aybe)
• Added applicable changes from SVN. (Allofich)
  r4485: Enable writing to all planes when drawing pixels in EGA modes.
  r4487: Correct panning of VESA text modes.
  r4488: Correct comment about odd/even bit.
  r4490: Set MCB ownership when *blocks==total at end of DOS_ResizeMemory.
  r4492: Don't clear message queues of MPU-401 and compatibles on reset.
  r4493: Handle EOF character in batch files as actual end of file.
  r4494: Use 4-byte partial page mapping data.
• Replaced deprecated functions to enable building with FFmpeg 8 (maron2000)
• Fixed screen blanked when restoring minimized window in TTF mode (Windows
  SDL1) (maron2000)
• PC-98: Save Kanji CG access mode setting, restrict output accordingly
  (OPNA2608)
• Added missing language options to Windows installers (maron2000)
• Debugger: IV must not truncate addresses to 16-bit (cmsautter)
• Debugger: Warn single-stepping may not work as expected with Dynamic core
  (maron2000)
• MIDI: Show loaded Soundfont/ROM path only when required to. (maron2000)
• SDL2: Updated SDL2 library to version 2.32.10 (maron2000)
• Apply aspect/scaling/clipping when using OpenGL shaders in windowed-mode
  (rebb)
• Fixed file locking problem on Linux port (loops)
• Fixed typo in Linux man page (-date-host-forced option) (maron2000)
• Mention OPL in MIDI/OPL configuration dialog menu (maron2000)

2025.05.03

• Show TURBO status in title bar. (maron2000)
• Fixed MinGW32 builds failed using gcc15, due to a conflict in inline
  macro. (lazka)
• Revise EGA/VGA emulation to treat the CRTC CGA/Hercules
  CRTC bit remapping as bits to mask out, instead of defining
  the upper limit of the memory mask. This makes the CGA mode
  Engine page flipping test work. I initially had reservations
  about whether or not real hardware did this, but, it would
  make sense for hardware to do it that way. (joncampbell123)
• Updated libpng to version 1.6.47 (maron2000)
• Updated XCOPY to version 1.9a (maron2000)
• Updated SDL2 library to version 2.32.4 (maron2000)
• Fixed a build/install error due to using wildcards in Makefile.am, which is
  not supported in GNU Automake. (maron2000)
• macOS: Install SDL2_net in CI workflow to enable internal modem support on
  Release and Nightly SDL2 builds. (maron2000)
• Fixed buffer size to allocate missing byte for string terminator for
  savestate filename to prevent buffer overflow (arifogel)
• Fixed settings of yellow color in COLOR command (maron2000)
• Fixed COLOR command to match behavior on Windows (maron2000)
• Fixed INT21h AH=0a cursor position moved by bell due to keyboard buffer full
  (maron2000)
• Fixed INT21h AH=01 echo behavior (maron2000)
• Replaced SetPixel with DIB Section Direct Memory Access for faster printing
  (DwayneSelsig)
• Fixed creation of overlay special files (zyebytevt)
• PC-98 mode: Add INT 18h function AH=10h to control cursor blink.
  Emulate documented side effect in that this call also hides the
  cursor. The PC-98 port of Lemmings will no longer show a blinking
  black box in the lower left corner. (joncampbell123)
• Fixed Host key (F11, F12) handling in Codepage 932 (Japanese Shift-JIS).
  (maron2000)
• Bumped ESFMu to ver 1.2.6 (maron2000)
• Fixed regression of adding a dot to CD labels when longer than 8 characters,
  required for games such as Descent 2 CD installer (maron2000)
• Added Modeswitch toggle option (DieSkaarj)
• Fixed glitch of DBCS character at the end of a line (maron2000)
• Fixed dialog for showing error of loading language files (maron2000)
• Removed two and 226 duplicate Chinese character mappings from code
  pages 950 and 951, respectively, ensuring more accurate Big5 and
  Big5-UAO character mappings for Chinese IME users. (1abcd)
• Enabled changing drives mounted prior to switching to securemode (maron2000)
• Enabled some messages to be translated in the translation files (maron2000)
• Fixed fullscreen mode occasionally switched to windowed mode (maron2000)
• Updated French translation (FredBezies)
• Fixed blank screen when output=ttf on PC-98 mode (maron2000)
• Fixed crash when switching from fullscreen to window mode in TTF output
  (maron2000)
• Fixed mounting zip files with white space in their names failed (maron2000)
• Fixed crash on reboot when output=ttf (maron2000)
• Fixed blank BIOS screen when output=ttf (maron2000)
• Fixed direct input of half-width kana (maron2000)
• Fixed PC-98 INT 1Fh, AH=90h source and destination address (drachen6jp)
• Fixed unnecessary trailing backslash in path name (maron2000)
• Fixed SSE MOVSS, MOVHPS, UNPCKLPS, UNPCKHPS, and PSADBW as well as
  MMX PMULLW, PSUBUSB, and PSUBUSW, instruction implementations (fuel-pcbox)