DOSBox-X 0.82.21 2019-08-31 16:05

0.82.21

• Reduced title bar size of the Configuration GUI.
• Fixed sizing and positions of some Help menu dialog
  boxes in the Configuration GUI.
• Configuration GUI issues with help text and word
  wrap running off the edge of the window have been
  fixed.
• INT 21h AX=3702h AVAILDEV returns DL=FFh to match
  MS-DOS behavior.
• Added INT 21h AX=6523h, for Microsoft software
  that uses it after prompting the user for a Y/N
  answer such as FORMAT.COM and FDISK.EXE
• PC-98 MS-DOS kernel now writes fake INT 1Bh device
  list to 60:6C to satisfy certain games that need
  it for their "master disk" detection.
• Fixed FAT driver bug that caused the allocation
  of an extra cluster if writing a file that is
  exactly a multiple of the cluster size long.
• FAT driver now assigns current date/time when
  creating directories.
• Increased the DTA segment size of the DOS FAT driver
  to fix problems with directory searches corrupting
  adjacent memory.
• Disk Parameter Block linked list now terminates
  with next pointer at FFFF:FFFF instead of 0000:0000
  to match general DOS pattern and satisfy some
  PC-98 games that enumerate the list.
• INT AH=52h List of Lists now points to the Disk
  Parameter Block as well, which allows some PC-98
  games that enumerate the list to work.
• Video parameter list and table at BIOS DATA AREA
  40:A8 added to MCGA mode, to match real PS/2 MCGA
  hardware.
• FAT driver now updates the Disk Parameter
  Block when activated, and provides as much
  from the FAT filesystem as possible. It is now
  possible to run Microsoft MS-DOS 6.22
  SCANDISK.EXE on a drive letter attached from
  a disk image.
• Disk Parameter Block is now the proper full
  size. The limited 9 bytes/block hackery has
  been removed.
• Added INT 25h/INT 26h emulation for FAT drives
  mounted with IMGMOUNT.
• Fake disk paramter table fixed to indicate one
  reserved sector.
• Fixed INT 25h/INT 26h to return an error rather than
  silently fail with success. Emulation of these calls
  exist currently only as stubs and, according to
  source comments, as a workaround for MicroProse
  installers. For disk diagnostic software like
  Microsoft ScanDisk it is better to signal an error
  until INT 25h/INT 26h are fully implemented.
• Added dosbox.conf option to control whether INT 10h
  VESA BIOS function AX=4F00h (Get SVGA information)
  zeros the entire 256-byte or 512-byte structure or
  not. Turning the option off (no zeroing) allows
  "Get Saddam!" to run with SVGA and VESA BIOS
  extensions enabled without crashing. The developer
  calls INT AX=4F00h but does not provide enough
  storage space for the full 256 byte structure,
  only enough for the base structure defined by VESA.
• INT 2Fh updated to explicitly mention SMARTDRV or
  DBLSPACE if values of AX are known to match their
  API.
• VESA BIOS modelist now includes S3 OEM video modes
  as documented by the RBIL, and needed by Line Wars II.
• OpenGL output now clears 3 frames instead of 2 after
  mode change to deal with nVidia hardware that
  reportedly triple buffers OpenGL rendering in
  Windows.
• INT 21h fixed to always enable the A20 gate through
  HIMEM.SYS if dosbox.conf indicates a configuration where
  XMS is enabled, the HMA is enabled, and DOS is loaded
  high (DOS=HIGH), which is the default configuration
  for DOSBox-X.
• XMS emulation fixed not to allow conventional memory
  block addresses (source or dest) if it extends past
  the 1MB+64KB-16 range normally accessible from real
  mode, as per Microsoft XMS test program.
• XMS emulation fixed to disallow XMS block move/copy
  with an odd length byte count, per Microsoft XMS
  specification.
• XMS emulation no longer allows freeing a XMS block
  handle that is still locked, as per Microsoft XMS
  specification and testing software.
• Enhance existing INT 68h fix for "PopCorn" by adding
  a dosbox.conf option to always keep INT 68h NULL,
  so that it's possible to run the game in machine
  configurations other than CGA.
• EGA/VGA: Fix "dynamic parameter save area" pointer,
  to make sure it's initialized to zero properly.
  This is needed to run "Get Saddam!" in VGA mode
  without crashing.
• INT 10h AH=12h BL=10h no longer responds in
  machine=mcga mode, which allows Thexder to run in
  256-color mode properly when emulating MCGA.
• Added code to silence the PC speaker, if it was left
  on at reset, at BIOS POST.
• Added pause at BIOS POST (after reset), with
  dosbox.conf option to control, so that screen contents
  at reset can be seen.
• Writes to unmapped 0xE0000-0xE7FFF in PC-98 mode no
  longer print a "write to ROM" warning. PC-98 games
  and software like to zero that region whether or not
  the 4th bitplane is enabled.
• PC speaker emulation now takes into consideration
  the case when the 8254 timer has been given a control
  word without a counter value, in which case no sound
  is to be emitted until a control word is written.
  This fixes "Titus the Fox: To Marrakech and Back"
  when the game fails to detect Adlib (OPL2) hardware.
• Adlib polling hack no longer needed.
• Floppy controller emulation fixed to support sector
  sizes other than 512 bytes per sector.
• Floppy controller fixed to always set "seek completed"
  status bit after seek/calibrate, not just when the
  head hits track 0 (programming mistake).
• PC-98 40-column text mode is now supported.
• Integrated commits from mainline (Allofich)
  • In the mapper, display disabled items or events
    with no binding in grey.
  • Implemented BIOS beep sound for ASCII character 7
  • Return failure for INT 13 format calls if the
    drive is inactive.