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CHANGELOG
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0.82.16 (next)
- Mac OS X builds now contain the correct version number in
the application plist.
- SDL1 builds fixed to always compile with internal SDL_net
library instead of public library on the system
- Mac OS X SDL1 builds fixed to always clip the desktop
dimensions against the available video modes provided
by the system to avoid problems with the 1080i/1080p
modes listed in the System Preferences dialog and older
HDTV LCD TVs with lower than 1920x1080 native resolution.
- "unmask keyboard on int 16 read" option is on by default,
to allow DOSBox-X to keep the keyboard working with
Windows 3.11 Windows for Workgroups.
- Added multi-monitor support and detection for Mac OS X.
- Fixed problem on multi-monitor Linux/X11 setups where going
fullscreen on the primary monitor leaves the non-fullscreen
window sticking out on the adjacent monitor.
- Windows SDL1 builds fixed so that on multi-monitor setups,
going fullscreen will fill the monitor the window is
placed on.
- Added support for multi-monitor and DPI determination for
Microsoft Windows.
- SDL1 and SDL2 builds now examine multi-monitor setups and
so that they can go fullscreen properly on one monitor
instead of going fullscreen across all monitors, in
Linux/X11.
- SDL1 OpenGL code fixed not to leave a blank space at the
top of the screen when going fullscreen (if the menus are
SDL drawn menus).
- SDL1 library modified to center cursor properly no matter
where on the overall desktop the fullscreen window exists.
- Multi-monitor and fullscreen support added for Linux/X11
versions of SDL1 DOSBox-X.
- For non-x86 targets, or x86 targets where the user prefers
not to use the x86 FPU core, code has been added to emulate
the FPU instructions and registers using the "long double"
data type for full 80-bit precision. This fixes 3D glitches
in "Explora" though it still doesn't pass the Intel i387
test program.
- PC-98 INT 18h AH=04h: Added software delay to slow down some
older PC-98 games that poll keyboard/mouse while animating
cutscenes. The games seem to be timed around the assumption
that this call has some delay to it.
0.82.15
- Incorporated x86 FPU emulation from DOSBox SVN to improve FPU
precision at least on x86 and x86_64 targets.
- PC-98 port 6Ah fixed not to allow setting EGC enable unless
another EGC enable bit has been set, as specified in the PC-9801
bible.
- SVGA mode 0x10A (text mode) fixed to display properly instead
of only the top half.
- BIOS keyboard handling fixed in PC-98 mode so that Shift+Ro
types an underscore as expected.
- SVGA emulation (Tseng ET4000 and S3) fixed to reflect real
hardware behavior where BYTE/WORD/DWORD VGA bits in the CRTC
are ignored in SVGA modes.
- Added "debug page flip" and "debug retrace poll" options to
the menu.
- Added "Swap Floppy" and "Swap CD" commands to the menu.
- INT 2Eh (MS-DOS command interpreter interrupt) fixed so that
the segment value of the interrupt vector matches the PSP
segment of COMMAND.COM. Some DOS applications rely on that
segment value as a starting point to enumerate the MCB
chain.
- PC speaker emulation fixed not to print "queue overrun"
messages if the game or demo is attempting to use the PC
speaker while pcspeaker=off.
- PC speaker emulation fixed to improve accuracy and to ensure
the square wave is synchronized to the 8254 PIT output.
This change appears to have improved sound quality with
PWM "digitized speech" output.
- 8254 emulation fixed to improve overall accuracy
- 8254 PIT timer emulation fixed not to report writes to PIT 0
Timer counters if the game is writing the same value
repeatedly.
- 8254 PIT timer connected to PC speaker now handles new counter
value without causing full reset of the square wave (mode 3),
which allows DOSBox-X to pass all tests in DOSLIB.
- Added dosbox.conf option to control bus speed (and therefore
I/O delay) of the C-BUS in PC-98 mode. Added defaults
appropriate to PC-98 mode according to bus speeds documented
for PC-98.
- Timer clock gate emulation fixed to work properly in PC-98
mode as well as IBM PC mode, when the PC speaker clock is
enabled or disabled. This includes resetting the counter
on the 8254 when the clock gate (trigger pin) is turned off
[DOSLIB test TPCRAPI6.EXE]
- Introductory text now indicates whether the build was
compiled against SDL1 or SDL2 (emendelson)
- Windows SDL1 builds now remember window position even when
entering/leaving fullscreen mode.
- "Restart DOSBox-X" menu and command code removed.
- Linux/X11 window focus fixup. The change in 0.82.14 broke
main window focus handling entirely by forgetting to check
for the "window manager" window handle.
0.82.14
- Windows builds, if run on Windows 7 or higher, will now direct
the task bar preview to show only the part of the window
containing the DOS screen.
- SDL1 Mac OS X builds fixed to remember window position even
if going to or from fullscreen mode.
- Fixed mistakes with SDL2 surface output that caused serious
UI problems with fullscreen mode and fullresolution=original.
- Fixed problems with SDL1 Mac OS X and the window/dock menu
filling up with multiple windows that have long ceased to
exist.
- SDL1 Mac OS X startup code replaced with startup code from
SDL2 in order to run from main() cleanly instead of running
SDL_main from an OS X event callback. This also fixes the
problem of an unresponsive menu on startup if run from the
terminal.
- SDL1 Mac OS X builds fixed not to destroy and recreate the
window every time it is resized.
- SDL1 Mac OS X builds fixed to keep the window position
stable every time you resize or do anything to trigger
window recreation. Resizing the window no longer causes it
to re-center to your screen.
- SDL initializion fixed not to bail out on startup if
DOSBox-X is unable to initialize SDL1 CD-ROM support (ccawley2011)
- Segfault fixed (NULL pointer de-reference) that
occurs when running DOSBox SVN on anything older than
Mojave. DOSBox-X was not affected but the fix was applied
just the same because the possibility is there.
- Configuration GUI fixed to fade out with the right color
RGBA order on Mac OS X.
- Mac OS X SDL1 builds fixed to ignore mouse movement that
occurs outside the window, unless any buttons are held
down.
- Mac OS X RGBA color order error with output=opengl fixed.
EGA/CGA/MDA/Hercules/etc. modes should display properly
now on OS X with OpenGL output.
- SDL1 builds for Mac OS X now use the full Application
menu generated by SDL1 instead of just an About command.
- SDL1 builds under Mac OS X now support the "touch bar"
on Macbook Pro and offer a few basic shortcuts,
including a few that the touch bar makes much more
inconvenient to use since the function key row is
virtual on the touch bar instead of physical.
- SDL1 builds under Mac OS X now offer a few basic
DOSBox-X shortcuts if you command-click or double-tap
the application icon in the dock.
- Added support for taskbar extensions offered by
Windows 7 and higher that allow DOSBox-X to put
additional buttons in the preview pane that appears
when you hover over DOSBox-X in the taskbar.
- Centos 7 SDL1 builds (Linux X11) can now go fullscreen
properly, instead of making the user input devices
unusable running in an endless loop.
- Windows builds now include Mapper and Configuration GUI
commands in the system menu.
0.82.13
- Mac OS X SDL2 builds now use the native OS X menu
system instead of the "SDL drawn" menus.
- Mac OS X SDL1 builds now default to the OpenGL
output (if compiled with OpenGL support). Under
recent versions of OS X, OpenGL output gives
better performance than surface (CGBitmap) based
display.
- SDL2 builds now have working XBRZ scaler support.
- Mac OS X SDL2 builds updated to completely ignore
touch events, because SDL2 sees the touchpad on
Macbooks as a touchscreen. Prior to this fix, the
DOSBox-X UI was unusable due to mixed input events
from both the touchpad and the mouse input from the
touchpad.
- SDL1 High DPI support for Mac OS X users with Retina
displays.
- SDL1 fix for display problems (blank windows) on Mac
OS X 10.14.x (Mojave).
- Windows builds (compiled with VS2017) now have working
MT32 (Munt) emulation.
- Adjusting CPU cycles with F12 + - / F12 + + (Increment
and Decrement Cycles shortcuts) now updates cpu cycles
property. This fixes a problem where adjusting the cycle
count then changing the CPU core caused DOSBox-X to reset
the cycle count back to the original value.
- Linux/X11 support fixed not to assume XRandR extensions
are present, but to instead ask the X11 server first.
- Simple scaler rendering has altered the RENDER start line
state so that detection of a changed line triggers a block
of rendering without compare within a limited count before
checking again. This means a reduced CPU load with scalers
because it only detects frame changes every line before
changes detected, and then on average every 12th line
when running the scaler code. Hopefully this helps the
Raspberry Pi keep up with DOS gaming better.
- Simple scalers now offer compile-time (not run-time)
option to omit per-pixel compare in scaler and process
the entire scanline instead as a performance adjustment
for slower and embedded systems.
- Video debug menu added. First item is one that blanks the
display to test screen updating.
- Simple scalers (normal 2x-5x and SAI) revised to process
changes and scaler rendering in larger blocks for possible
performance improvement.
- Simple scalers fixed to properly compare all pixels to
detect changes properly, instead of only the first 4-8
pixels.
- EGA/VGA text rendering combined to reduce code copypasta
and reduce bugs.
- VGA 16-color planar modes now obey CRTC byte/word/dword
bits.
0.82.12
- MinGW HX DOS builds fixed to accept mouse input properly
even beyond the 640x480 of the original SDL window
dimensions. HX DOS seems to use the original dimensions
of the window even if the window is maximized, thus the
mouse input issue.
- Configuration GUI fixed not to restore (unmaximize)
the window, it's unnecessary.
- New build scripts for Mac OS X, MinGW, and MinGW HX-DOS,
under build-scripts in the source tree, to help make
DOSBox-X releases more timely and consistent.
- MinGW HX DOS builds now use WS_POPUP style instead
of WS_OVERLAPPED to avoid window caption redraw
glitches when in Windows XP.
- MinGW HX DOS builds fixed to force the SDL window
maximized at all times. Mapper and Configuration GUI
interfaces fixed not to call on Windows to SW_RESTORE
the window, in order to keep it maximized.
- Steel Gun Nyan PIT/Timer hack revised so that polling
the timer does not cause an interrupt storm. This
fixes "God of Thunder" MS-DOS game where entering or
leaving a house causes the Adlib music to play
REALLY FAST during the transition effect.
- Dynrec core ported from DOSBox SVN (Daniel-Trevitz)
- Configuration GUI will pack settings closer together
if the window/screen size is below 800x600.
- Configuration GUI fixed to size dialog boxes as
large as needed to show all options, to allow tabbing
between options, to show a focus rectangle on the
items.
- Configuration GUI top level windows no longer show
inactive title bar whenever you access a menu.
- About dialog in configuration GUI updated to
reflect that this is DOSBox-X in 2018, not
DOSBox in 2014.
- Configuration GUI now works with touchscreens in
SDL2 builds.
- INT 33h fixed to regard cursor as hidden if hidden
for at least 100ms, which fixes host cursor flickering
when running the built-in FreeDOS EDIT.COM program.
- Mouse input and guest pointer integration limited
to send input only if within the display region or
within a 10% border around the display region.
- SDL2 tapping the SDL drawn menu bar (on a touch
screen) no longer triggers mouse click in the
guest application (bugfix).
- SDL2 Linux/X11 hack, added to compensate for bugs
in SDL2 v2.0.5 regarding Linux/X11 touchscreen
events, removed. SDL2 v2.0.9 fixed it.
- Linux/X11 SDL2 builds will now encourage the user
to update the SDL2 library installation if
SDL2 library v2.0.5 is installed.
- Fullscreen mode fixed in SDL2 builds.
- Fixed configuration GUI fade out/in effect after
exiting mapper GUI bug.
- Configuration GUI now available and working in
SDL2 builds as well as SDL1.
- SDL2 builds now have a working "Fit aspect ratio"
option.
- SDL1 fullscreen mode fixed to use either the desktop
size or the desired output size, and fallback to
non-fullscreen on failure, to fix a segfault that
would otherwise happen.
- CONFIG -set sdl showmenu= now changes menu visibility.
- CONFIG -set render scaler= fixed to apply changes
to scaler and force setting, and update menu items,
instead of ignoring it.
- CONFIG -set render aspect= now keeps menu synchronized
with setting.
0.82.11
- SDL GUI fixed to make fade/sepia effect fit the
actual display rectangle instead of filling the
window.
- PC-98 BIOS keyboard handling now returns capitals
for A-Z if SHIFT xor CAPS LOCK is engaged.
- PC-98 BIOS keyboard handling now uses modifier bits
of keyboard bitmap to process scan codes, hackish
IBM PC/AT data area status handling in PC-98 mode
removed.
- PC-98 BIOS keyboard emulation now maps numeric keypad
to produce the correct keyboard input to the console
and games. This fixes games that rely on the numeric
keypad and the DOS console driver
- Command line parsing fixed to add any BAT, COM, and
EXE file references given at DOSBox-X's command line
to the autoexec.bat file run at startup.
- BOOT command bug fixed that made it impossible to
specify both disk images and the --debug and --force
options.
- Debug output fixed to make it easier to break into
the debugger even during a flood of debug output.
- Added dosbox.conf option to enable/disable the
PC-98 bus mouse interface
- PC-98 boot disks with 128 bytes/sector boot sectors
now load 4 sectors instead of 2. Seems to be
required by some games.
- INT 13h read/write functions fixed to refuse the
command if the floppy disk has a sector size too
large for the implementation (such as a PC-98
disk image mounted in IBM PC mode with 1024 bytes
per sector).
- INT 13h AH=2 (read sector) updated to return disk
change error on first read after disk change, to
match real BIOS behavior.
- Floppy emulation now tracks "disk change" signal.
- PIC event handling fixed, IRQ breakpoints now stop
at the beginning of the interrupt handler.
- MPU-401 MIDI default IRQ is now IRQ 6 in PC-98 mode,
to match factory default setting.
- MPU-401 MIDI IRQ masked by default in PC-98.
- PC-98 port BFDB implemented, which allows control
of the mouse interrupt rate.
- Eliminated mouse periodic interrupt hack, the mouse
interrupt on PC-98 is periodic when enabled.
- 256-byte/sector hard disk images fixed to ensure the
proper boot drive identifier is presented for MS-DOS
when booting a hard disk image.
- Added IMGMOUNT -o partidx=N option. N is an integer
value that indicates which partition to mount, counting
up from zero. This allows mounting disk images that
the FAT driver otherwise can't identify which partition
to mount.
- New general -o name=value option for IMGMOUNT, to pass
various options to the FAT driver.
- Update Metal Force mouse hack to become a more general
"fire interrupt on Port C write" with a dosbox.conf
option to enable. This fixes the requirement to move
the mouse constantly for "Amaranth" when enabled.
- Add to cascade interrupt hacks by offering an option
to ignore the "in service" bit of the PIC for the
cascade interrupt, while still tracking it for
the DOS game or interrupt. Handy for PC-98 games
that check the cascade "in service" bit before
acting on the interrupt (IRQ 8-15).
- DOS kernel fixed to limit it's private area and
UMB region to avoid overlapping the PC-98 SOUND
BIOS.
- PC-98 SOUND BIOS dummy stub added for games that
call into it.
- Emulator hanging problem fixed when inputs are
processed while running at a very low cycle count.
- Added PC-98 LIO BIOS list and stub for games that
require it.
- Timer and PIC updated to emulate Mode 3 Square Wave
output through the IRR register. Needed for Steel
Gun Nyan.
- PC-98 INT 18h fixed to reenable and process any
keyboard data waiting when the DOS game or application
calls INT 18h to read keyboard input. This fixes
keyboard problems with Quarth.
- PC-98 FDC BIOS emulation no longer reprograms the
timer interrupt, but uses an alternate hack to
avoid divide by zero fault with Ys II.
- PC-98 GDC command to read back cursor position
added.
- PC-98 DOS CON device emulation now maintains ANSI
attribute byte at 60:11D as documented.
- BOOT now hides hardware cursor when booting a guest
OS in PC-98 mode.
- INT 1Dh vector now points at segment FD80 to satisfy
some games that autodetect PC-98 vs other platforms.
- INT 18h AH=42 implement display "bank" bit for games
that need it.
- PC-98 text scroll region implemented (I/O ports
76h-7Ah even).
- PC-98 CRTC mode set regarding 20/25-line mode fixed
to update line height, text vertical position/height,
and cursor shape.
- PC-98 emulation of text height/vertical position
registers 70h-74h even added.
- PC-98 text hardware cursor fixed to cover both halves
of doublewide characters if cursor positioned on left
half, to match real hardware.
- Fixed music/interrupt slowdown whenever I/O and INT 10h
BIOS emulation is involved.
- PC-98 minimal (non-functional at this time) printer
port emulation added, as well as system configuration
port.
- PC-98 CG memory region fixed to match real hardware
behavior, responding to A4000-A4FFF.
- FAT filesystem driver now supports 2048 bytes per
sector filesystems.
- FAT filesystem driver logical/physical sector matching
fixed to improve flexibility.
- Fixed crash that occurs if you maximize the window
and then adjust scalers to produce output that is
larger than the maximized window.
- INT 33h emulation now offers hiding the host cursor
if the guest has provided an interrupt subroutine
for the mouse driver to call, since it usually means
the DOS game wishes to draw the cursor itself.
- INT 33h emulation now offers hiding the host cursor
if the guest is polling the cursor position, to
better support guest/host integration with DOS games
that draw their own cursor.
- AUX and PS/2 emulation no longer allowed if machine
type is PCjr.
- PS/2 mouse emulation fixed to disable itself if the
slave PIC needed for IRQ 12 is not present.
- INT 33h pointer integration improved to support some
additional DOS games, and to handle DeluxePaint II
enhanced.
- IMGMOUNT now supports NFD disk images.
- DOSBox Integration Device now available for PC-98.
- Added support for T98Next NHD hard disk images.
- Added support for T98Next NFD R1 disk images.
- Fixed crash with VGA BIOS allocation if video memory
allows the full modelist to overflow the available
ROM space.
- SDL2 mapper redraw issue resolved.
- Added dosbox.conf option to determine whether INT 10h
VESA BIOS emulation points at the modelist in ROM or
copies the modelist into the DOS application's info
structure when asked.
0.82.10
- PC-98 INT 1Bh floppy emulation now fakes success for
calls to format track.
- Initial keyboard pause fixed
- PC-98 INT 1Bh floppy disk BIOS call now resets timer
interval per call. This fixes Ys II after disk swap.
- BIOS fixed to put normal "unhandled INT call" handler
for INT 0-7 even in PC-98 mode to avoid confusion
between game crashes and unknown INT calls.
- VFD image support fixed to properly handle disk images
where a sector is marked with fill byte 0xFF and the
data field is 0xFFFFFFFF, which means the sector contents
are all 0xFF.
- DOSBox-X now supports T98 NFD disk images (R0).
- BIOS data area now properly reports a high-resolution
CRT display.
- INT DCh AH=1 CL=10h added, which is apparently a print
string function.
- BIOS data area now reports 188+ user-definable CG slots,
which makes GAJET happy.
- FDI image support fixed to read the header instead of
treating it as a plain disk image with 4096 of junk.
- PC-98 character generator is now accessible through both
I/O ports A1h-A9h and through memory-mapped I/O range
A4000-A401F. This fixes missing text in Eve Burst Error.
- Gravis Ultrasound emulation will no longer log GUS reset
writes in cases where the same value is being written
repeatedly, to reduce log clutter. Some demoscene
productions have music routines that trigger GUS reset
repeatedly without changing the register.
- Added "gus master volume" setting to deal with games or
demoscene productions where the music is too loud and clipping.
- Added "Pause with interrupts". When enabled, the CPU is directed
into a CALLBACK_Idle() loop to halt the game's main
logic while allowing interrupts to run. This is useful
for recording the game or demo's music because most DOS
games/demos run the music and sound effects from interrupt
handlers instead of the main loop.
- Audio/video capture fixed to render audio even if muted,
instead of rendering garbage to the capture file when
audio is muted.
- Experimental Emscripten + Node target (not reliable yet).
- Added option to control how unhandled IRQs are dealt with.
One option, mask_isr, is derived from em-dosbox.
- Code added to read the screen dimensions in Linux/X11,
either through XRandR or through the base X11 API.
- Code added to read and store the dimensions, size, and
DPI (Dots per Inch) of the screen.
- Fixed bug that enabled IBM style APM BIOS in PC-98 mode.
- For PC-98 mode, PIC emulation by default (but controllable
through dosbox.conf) now initializes the PIC at startup to
return the ISR (interrupt in-service) register instead of
the IRR (interrupt request) register. This fixes FM
music problems with Blackbird by Vivian caused by a
programming mistake in the FM interrupt handler.
- PIC emulation now accepts a dosbox.conf option not to mark
the cascade interrupt as in service, for troublesome games.
- VESA BIOS emulation now supports a packed 16-color (4bpp)
mode as seen on a Toshiba Libretto (Chips & Tech) system.
The packed format is different than the normal planar 16-color
SVGA modes seen on most systems.
- INT 33h no longer reports relative mouse motion unless the
user captures the cursor.
- Fixed EGA 16-color display modes (M_EGA) to honor CGA and
Hercules compatible mapping modes (bits 0 and 1 of the
CRTC mode control) and limit memory display to 8KB or 16KB
accordingly. This fixes the mode select screen in the game
"Prehistorik 2".
- Removed Sound Blaster goldplay mode + sample accurate mode
warning, goldplay mode no longer has issues with sample
accurate mode.
- Mixer "sample accurate" mode fixed to work again.
- Windows SDL1 builds fixed to work around Windows SDK-level API
limitation that normally prevents Win32 applications from
fully receiving WM_KEYDOWN events for the left/right shift
keys independently. Left and right shift keys are now fully
usable on Windows builds (i.e. for use with pinball games).
- INSTALL.MD guide and test files (Aybe)
- CONFIG -get now populates %CONFIG% environment variable with
configuration setting (follow DOSBox SVN behavior)
0.82.9
- "Always on top" mode is now available for Mac OS X builds.
- PS/2 mouse emulation fixed not to send relative mouse motion
unless mouse cursor is captured.
- Shell no longer provides MEM.COM if machine=pc98 or cputype=8086.
MEM.COM is not compatible with either case.
- INT 10h emulation will now set the S3 LFB enable bit for VESA
SVGA modes, unless machine=vesa_nolfb was specified.
- VGA emulation revised to report possible known problems with
Windows 3.1 with regard to LFB base address or memalias setting.
- VGA emulation fixed to emit warning if memalias=24, for S3 LFB,
if machine=svga_s3, to inform the user that the configuration is
known to cause the Windows 3.x driver to crash.
- VGA emulation will no longer report S3 linear framebuffer address
unless machine=svga_s3. The LFB address doesn't matter for anything
other than SVGA S3 emulation.
- S3 emulation will now automatically disable PCI VGA emulation if
constraints prevent DOSBox-X from setting a linear framebuffer
address aligned to 32MB (as required for PCI emulation).
- VGA emulation fixed to pick a more appropriate linear framebuffer
(S3) address if memalias is set to a value below 32.
- Added dosbox.conf option "pci vga" to control whether the VGA
emulation appears as a PCI or ISA device.
- ROM BIOS now forces reported RAM down to make room for BIOS
alias at top of memory instead of throwing an E_Exit error.
- Fixed Hercules emulation (and MDA) so that the Hercules palette
is always enforced. This fixes a bug where switching to HGC
graphics mode resulted in monochrome blue/black graphics instead
of the intended white/green/amber color expected.
- Added MDA emulation (machine=mda). It functions like
machine=hercules minus the graphics mode and Hercules-specific
extensions to the base MDA card.
- DOSBox shell no longer accepts dosbox.conf settings as commands
by default, unless enabled in dosbox.conf. Typing "cycles" will
no longer show cycle count. The dosbox.conf setting allows the
user to enable it again i.e. for compatibility with DOSBox SVN.
This is to prevent dosbox.conf settings from polluting the
available commands at the shell and conflicting with shell and
executable names.
- EGA emulaton fixed to obey Color Plane Enable register in
16-color planar modes.
- Fixed BIOS model byte to report PS/2 model 30 correctly when
machine=mcga, to allow certain DOS games to detect MCGA that way.
- CGA mode/color select registers are readable on MCGA, fix 3D8-3D9h
to reflect that.
- INT 10h fixed to properly allow/deny AH=10h, AH=11h, and AH=12h calls
according to machine= type instead of mistakes that blocked too many
calls.
- CGA composite mode should not be available when machine=mcga.
- Fixed INT 10h to report MCGA color display if machine=mcga.
- MCGA (IBM PS/2 Multi-Color Graphics Adapter) emulation added.
- bitop C++11 self-test disabled for Microsoft Visual Studio builds.
Microsoft's compiler can't handle them for some reason.
- Added DOSLIB DSXMENU.EXE to the built-in executable list.
DSXMENU.EXE allows DOS CONFIG.SYS style menus to be set up to
run commands based on menu selection.
- PC-98 ANSI emulation fixed to use the number of rows on the screen,
not cursor position, to range-clip ANSI cursor positioning.
- Added code to have DX-CAPTURE wait 3 seconds (or until ENTER/SPACE
is pressed) after the program exits, before stopping capture.
- DOSBox-X menus now allow runtime selection of capture format
(AVI+ZMBV or MPEG-TS H.264). Changing while capturing will stop/start
capture correctly.
- Added switches to DX-CAPTURE to allow specifying audio, multitrack audio,
and video as well.
- DX-CAPTURE shell command added. The command to run is specified
after DX-CAPTURE and DX-CAPTURE will start video capture, run the
program, then stop capture when the program exits.
- VGA/SVGA emulation fixed to enforce 256KB (64KB planar) wraparound
when emulating stock VGA modes (not SVGA/VESA BIOS). Some
demoscene productions rely on the 256KB wraparound when showing
scrolling credits.
- Gravis Ultrasound emulation now uses I/O callout system, with
I/O port handling to emulate ISA bus 10-bit decoding (but with
consideration of GUS MAX 7xx registers) so that GUS I/O ports
are visible every 1000h I/O ports. A demoscene production was
found that relies on an alias of GUS ports at 5xxxh rather than
using the I/O ports directly.
- Mouse emulation no longer sends motion to serial and PC-98 mouse
emulation unless mouse cursor has been captured.
- Mouse emulation fixed to set sensitivity and mickey count even if
int33=false on mouse emulation reset.
- Debugger fixed to paginate commands with a lot of output, including
HELP, PIC, and various commands to dump interrupts and GDT/IDT tables.
- CPU core no longer triggers Double Fault if Divide Overflow
occurs within Divide Overflow. This is needed for bizarre anti-debugger
obfuscated code seen in a demoscene production, where the program
wraps the demo in a mini-filesystem emulated by trapping INT 21h.
- cputype= dosbox.conf setting fixed to allow selecting between
new 486 emulation (cputype=486) and old 486 emulation (cputype=486old).
The "old" 486 core emulates older 486 CPUs that differ significantly
from the newer 486 CPUs that inherited features from the Pentium.
- IRQ hack setting for GUS and Sound Blaster is now a list so that
multiple hacks can be specified, but in a way that is backwards
compatible with existing dosbox.conf files.
- IRQ hack option for Gravis Ultrasound added.
- INT 20h emulation fixed to work with demoscene productions that
call INT 20h in a way that the interrupt frame wraps around the
64KB limit of the stack.
- XMS emulation now has a dosbox.conf setting to control the number
of XMS handles available.
- Added INT 33h option not to round mouse cursor coordinates to text
cell boundaries in text mode. Some demoscene productions were found
that detects mouse movement, but reads initial position from text mode
before switching to graphics.
- Removed IRQ0 error measurement hack, to match DOSBox SVN. This fixes
timing problems with some demoscene productions. The error measurement
hack was apparently added for Microsoft Flight simulator, but has not
been needed since and has been causing timing issues since.
- Fixed INT 10h VGA save state function to program the Attribute Controller
properly so that the screen is not left blank after the call.
- 8042 keyboard emulation now initializes port 60h to 0xAA on hardware
reset and initialization. Some DOS games and demoscene productions
need something with bit 7 set in the register at startup in order not
to act as if a key was immediately pressed.
- Add printer emulation from Daum's branch of DOSBox, add FreeType 2.9.1
to go with it (Alex/AT)
- Add keyboard type setting, for use in future development.
- PCjr emulation fixed to emulate PC/XT style NMI mask at port A0h
rather than emulate the secondary PIC.
- Code of Conduct revised to make it clear that forks/derivatives CAN
have their own Code of Conduct but that it only applies to that fork
or derivative version. No forking DOSBox-X, changing the code of
conduct, and enforcing it on anyone outside your fork.
- CPU normal core fixed to clear ZF flag after MUL when cputype=8086,
which fixes problems with MSD.EXE mis-detecting the CPU as a NEC V20.
- Fixed PCjr emulation not to allow UMB (upper memory blocks) since
that seems to cause stability issues with emulation. Also, PCjr
does not have UMB as far as I know.
- Fixed PCjr not to re-read port 60h from IRQ1 handler.
- Fixed PCjr not to emulate INT 15h keyboard hook.
- PCjr keyboard emulation fixed to trigger NMI and reflect to IRQ1
the way it actually works on IBM PCjr systems, which also fixes
keyboard control issues with the PCjr version of "Pitfall".
- configure.ac now provides an option for compiler optimization (Yksoft1)
- Code of Conduct, initial version, added to source tree
- PC-98 palette save/load state
- CPU, memory, VGA palette and attribute controller save/load state
- DOS SHELL now implements INT 0x2E to allow DOS programs to invoke
shell commands through COMMAND.COM (borrowed from DOSBox SVN).
- Added dosbox.conf option to control the physical memory address of the
S3 SVGA linear framebuffer.
- Save/load state system added, currently very minimal and experimental.
- Appveyor XML added to source tree (Allofich)
- Fixed *most* SDL2 refresh problems.
- Sound Blaster Pro mixer volume fixed to return reserved bits SET rather
than CLEAR. Some demoscene productions detect Sound Blaster Pro by whether
these bits remain set when written. This fix allows them to detect Sound
Blaster Pro as Sound Blaster Pro.
- VGA emulation fixed not to add 2 scanlines twice, which fixes VGA vertical
timing and scanline count and fixes the scroller in "Inconexia".
- Gravis Ultrasound emulation now prints a warning if the game/demo attempts
a DMA transfer while leaving the DMA channel masked.
- Fixed Gravis Ultrasound emulation to mask DRAM peek/poke I/O to the 1MB
offered by the card, which fixes GUS problems with a demoscene production
that has random values in DRAM address bits 23-20.
- Added dosbox.conf option that, if set, lets Gravis Ultrasound emulation
start a DMA transfer if the game/demo is polling the DMA control register
when DMA is unmasked and DMA terminal count has not occured, which helps
some demoscene productions.
- Added "PIC unmask IRQ" option for Gravis Ultrasound emulation.
- Gravis Ultrasound emulation now has a dosbox.conf setting to initialize
the hardware at startup as if ULTRINIT had been run.
- Added dosbox.conf option for VESA BIOS emulation that, if set, instructs
non-LFB modes to report 64KB windows but map 128KB from the start of
the window, which helps (but does not fully solve) some Demoscene
productions with redraw problems handling non-LFB as if LFB.
- Fixed ET4000 emulation to support the hretrace "wobble" needed for
"Copper"
- VGA DAC/attribute controller behavior updated to reflect actual behavior
as seen on an IBM PS/2 VGA model, as well as almost any SVGA clone.
- VGA DAC behavior unique to Tseng ET4000 implemented when machine=svga_et4000.
256-color mode on the ET4000 seems to map the low 4 bits through the
attribute controller and, if enabled, the upper 4 bits through the
color select register. Note this behavior is REQUIRED for the
"copper" demo to display properly.
- VGA palette, DAC, and attribute controller emulation updated to
reflect actual VGA behavior, including the way that 256-color mode
is mapped through the attribute controller.
- Sierra highcolor DAC can now be enabled for any VGA/SVGA emulation
- Cleanup and reorganization of scaler, aspect ratio handling (Alex/AT)
- MinGW config.h builds fixed to enable Direct3D (Alex/AT)
- Build fixes for SDL1 and Linux and extended functions (JP Cimalando)
- Fixed ALSA MIDI mistake preventing the creation of subscription
ports (JP Cimalando)
- Previous release broke SVGA 16-color planar modes by masking video
memory to 64KB planar boundaries at all times, fixed code to do so
only for non-VESA modes. 1024x768 16-color mode works again.
- Fixed user-defined VESA BIOS modes to validate the required video
memory against the available memory on the emulated SVGA hardware.
- VESA BIOS modelist generaton moved into it's own function. Modelist
is regenerated upon editing/deletion of modes.
- VESA BIOS modes added as suggested by hail-to-the-ryzen
- VESA BIOS emulation now allows scriptable editing, deletion, and
mode renaming of VESA BIOS modes for use with picky DOS games and
demoscene productions that assume mode numbers.
- Added VESA BIOS mode 0x136 as an alias for 320x200x16bpp mode
- Enhancements to GFX_CaptureMouse and CaptureMouseNotify added
- Fixed scaler change detection to use sizeof(int) properly than assume
a certain byte count
- Fixed undefined sse2_available reference issue in certain builds
0.82.8
- New xBRZ scaler (with bilinear mode) (Alexat)
- Fixed aspect ratio correction to use the ratio given by VGA emulation
instead of assuming 4:3
- output=surface and xBRZ now permit filling the window just like
output=opengl and output=direct3d
- Added critical section around Windows SDL 1.x resize code to solve
the remaining 0.5% probability that resizing the window causes move
and resize to stop working in Windows 10.
- INT 10h AH=10h now ignores AL=3 in PCjr mode.
- Fixed keyboard handler bug in PCjr mode that caused some CPU
register corruption and general crashiness in games.
- Improved shell: (Aybe, Joncampbell123)
- Ctrl+Left and Ctrl+Right permits word-navigation.
- Added emulation of 'Ins' key behavior.
- Num Lock, Caps Lock, Scroll Lock are now synchronized at startup
and when DOSBox-X window gains focus again (Windows). (Aybe)
- Added visual feedback to Hat/D-pad buttons in mapper. (Aybe)
- Added documentation for 'dir' command sorting switches. (Aybe)
- Menu 'Show console' is now checked with '-console' (SDL1). (Aybe)
- Improved joystick support (see README.joystick): (Aybe)
- Added deadzone and response for joystick axes.
- Axes can be remapped for devices with questionable layout.
- User-settable deadzones for joystick bindings in mapper,
mappings like WSAD keys to axes is less frustrating.
- Improved mouse integration (Aybe):
- Now by default DOSBox-X does not emulate mouse movement when the mouse
is not locked. This gives a consistent experience when compared to host OS.
For the old behavior, use [sdl] mouse_emulation=always.
- Added visual or auditive feedback about auto-lock state (Windows).
This feature can be switched off, use [sdl] autolock_feedback=none.
- Added CAPMOUSE program for capturing/releasing mouse from command line. (Aybe)
0.82.7
- Mac OS X builds now honor showmenu=false by leaving the
stock SDL menu in place at startup.
- Default minimum MCB free/base is now 0x100, to sidestep
unknown unstable DOS application behavior when DOS
applications are loaded at around segment 0x800.
This also puts DOSBox-X at parity with the base memory
behavior of DOSBox SVN.
- Add dosbox.conf option to set Sound BIOS enable
bit in non-volatile RAM (PC-98) that tells older
PC-98 games the FM card is present (Yksoft)
- BOOT updated to boot D88 except for 2D format which
is generally used by PC-88 disk images.
- Added D88 disk image support
- CMake files added (Aybe)
- PIC timing updated to use "double" float type for
more precision, but as a typedef for future support
as a compile time option.
- Removed geometry checks from INT 1Bh FDC functions,
to allow non-uniform disks to work.
- MinGW builds now allowed to use Direct3D.
- Direct3D output fixed to use the same texture
coordinate, window fitting, and positioning
logic as OpenGL.
- Update zlib and libpng libraries in-tree.
- Fixed VFD disk image support to correctly signal
failure to detect geometry, to avoid divide by
zero crash with FAT driver.
- showmenu= now taken into consideration whether to
show the menu bar at startup
- Fixed get_item() E_Exit crash if menus asked to
show from dosbox.conf
- SDL drawn menus fixed to integrate with Direct3D
output on Windows.
- PC-98 mode can now boot floppy disk images where the
boot sector is 128 or 256 bytes/sector despite
track 1 and higher having 1024 bytes/sector.
- General codebase cleanup, compiler warning cleanup.
- Enable XInput support on Windows (Aybe)
- Fixed SDL drawn menus to use std::vector properly,
not to hold onto iterators while resizing the vector
and popping things off the top.
- PC-98 INT 1Bh "read id" floppy disk call fixed to
cycle through sector numbers. Some bootable PC-98
games use "MEGDOS" which polls this BIOS call before
attempting to read the disk. If the sector numbers
never cycle, "MEGDOS" will not attempt to read the
disk.
- Fixed bug that prevented some menu options (such as
"aspect ratio") from working if still in the BIOS or
booted into a guest OS.
- PC-98 mode fixed to ignore "mainline compatible mapping".
That mapping mode refers to DOSBox SVN which never
supported PC-98 mode anyway.
- Fix PC-98 INT 1Bh "test read" call, which then allows
"cherry bomb" to run.
- Remove geometry checks in PC-98 INT 1Bh BIOS call, so
that FDD images with odd sector sizes can work.
- ROM BIOS now automatically occupies E8000-FFFFF instead
of F0000-FFFFF when in PC-98 mode.
- Most 128 byte/sector FDD images appear to jump to
E800:0002. I'm guessing that's ROM BASIC, so add a
callback at that location to catch these boot disks
and show a message instead of allowing the boot
sector to jump to nothing and crash.
- PC-98 BOOT fixed to check for and support booting from
FDD images where track 0 contains 128 byte/sector
boot sectors.
- PC-98 INT 1Bh support fixed to support reading/writing
sector sizes other than the one sector size reported
by the image. It is now possible to read the other
sector sizes from an FDD/VFD image.
- Fixed somewhat serious bug that, when compiled against
Microsoft C++, causes the AVI writer to use the 32-bit
lseek() function instead of the 64-bit lseek64() function.
Prior to this fix, AVI captures would begin to corrupt
themselves after growing past 2GB in size.
- Cleanup code, fix compiler warnings, typecast problems,
C/C++ conformance problems as reported by GCC 4.8,
GCC 7.3.0 (MinGW), Visual Studio 2017, and Clang/LLVM
on Mac OS X.
- FM Towns machine type stub, for anyone interested in
forking DOSBox-X to implement FM Towns emulation.
- Code cleanup, refactor, according to compiler warnings.
- SDL drawn menus fixed to copy Direct3D backbuffer to
the SDL surface when popup occurs. This allows the
menus to overlap the Direct3D display correctly.
- Fixed Direct3D output so that when composing the next
frame in the backbuffer, it also copies the SDL drawn
menu from the SDL surface in order to keep it on
screen.
- Direct3D output updated to follow SDL clip rectangle
struct, in the same exact manner as the OpenGL output.
This also permits the Direct3D output to correctly size
itself and leave space at the top for the SDL drawn
menus.
- Fixed dynamic core entry point to push/pop EBP because
debug builds need the compiler to track the stack frame.
- Updated in-tree zlib and libpng libraries to the latest
provided by both projects.
- Fixed VFD (FDD) disk image support to signal to FAT driver
properly an error if it could not determine a geometry.
- Fixed code breakage with SDL2 that prevented compilation
with Munt (MT32) emulation enabled. SDL2 builds now allow
MT32 emulation.
- Mac OS X builds now compile against the in-tree zlib and
libpng libraries for consistency.
- MinGW builds now compile against the MinGW provided zlib
and the in-tree libpng library for consistency.
- Enabled MinGW builds to use Direct3D and Direct3D shaders.
- Added code to auto-detect the VirtualBox display driver
in Windows build, because OpenGL output doesn't work
in Windows XP under VirtualBox. The change will switch
the default output to "surface" if VirtualBox is detected,
else will retain the "opengl" default. This change applies
only to MinGW builds and not HX DOS or main VS2017 builds.
- Added PC-98 INT DCh emulation for function call that
writes a char to the screen, allowing Eve Burst Error
to clear the function row
- Added command line option to allow skipping the 1-second
wait in the BIOS startup screen.
- SDL2 builds now support use of the SDL drawn menu with
a touchscreen device.
- Fixed up SDL2 support code to compile correctly on
Mac OS X.
- Fixed up SDL2 compilation to automatically use the
SDL2 library on the system, or if that is not available,
use the SDL2 library in-tree. There are no plans to make
modifications to the in-tree SDL2 code.
- Added code to read and discard OpenGL error code before
creating font texture, to avoid false failure handling.
This fixes font rendering on Windows MinGW builds when
output=opengl.
- OpenGL SDL drawn menus fixed to ensure the menu contents
have been redrawn at least twice. One for each OpenGL
buffer because DOSBox-X uses the double-buffered mode.
- SDL drawn menus implemented for output=opengl. The menu
bar in Linux builds is now available in OpenGL mode.
- SDL drawn menus fixed to redraw only when state changes,
and to clean up menu drawing code.
- US keyboards can now enter the "Ro" key in PC-98 mode.
Default binding is set up to map the Windows Menu key
as Ro in PC-98 mode.
- VGA option change code fixed to trigger scaler redraw
correctly. Changing video modes or changing between
8/9-pixel VGA text no longer leaves artifacts on the
screen.
- Added code to force redrawing additional frames when
output=opengl, in order to correct a bug with Linux/X11
and MesaGL where the first OpenGL buffer swap after
SDL_SetVideoMode() is misplaced when the window size
changes.
- Renderer SSE line comparison fixed to use correct sizeof()
of the integer type during compare.
- Renderer fixed not to use SSE and non-SSE line comparision
at the same time, if SSE was enabled at compile time.
- Fixed in-tree SDL 1.x library to allow DOSBox-X to disable
auto-refresh of the window in Linux/X11 after SDL_SetVideoMode
to prevent visible flickering when resizing the window.
- Conditional support for Direct3D (9) output enabled for
MinGW builds, if the MinGW headers are available (yksoft1).
Option is disabled by default.
- Configuration GUI dialog box widened to accomodate buttons
that were previously cut off on the right.
- Replace E_Exit() with LOG_MSG() for key codes from the mapper
that a keyboard scan code generator does not recognize. This
fixes E_Exit() crashes if typing certain keys on a Japanese
keyboard with no equivalent in IBM PC/AT mode.
- Added code to double the size of the menu and menu items if
the window is 1280x800 or larger, for users with high
definition laptop displays and screens.
- Enforce minimum window size of 640x400 if the menu bar is
visible and DOSBox-X is drawing them, to make sure the menus
are accessible on screen.
- Removed auto-scalar-size code when output=surface that was
causing problems when resizing the window.
- Do not show "screenshot" menu item if screenshot support not
available at compile time.
- Remove "always on top" for anything but Windows at this time.
- Disable "Show debugger" option on Linux and Mac OS X if no
console attached to STDIN/STDOUT/STDERR.
- Disable "Show console" option on Linux and Mac OS X since
the console is not under our control.
- Windows "Always on top" fixed to remember selection and
enforce it between SDL_SetVideoMode and fullscreen entry/exit.
- Windows builds fixed NOT to change window Z-order on the
screen when updating the window on SDL_SetVideoMode.
- HX DOS builds fixed to keep window maximized at all times
to fill the otherwise unused space on the screen since
HXGUI only supports one window.
- Menu framework support for any other platform (including
Linux) added. The menus are drawn by DOSBox-X itself
using the 8x16 VGA font. This also gives SDL 2.x builds
a working menu. These menus are used if no other platform
specific menus are available. These menus are NOT AVAILABLE
at this time if output=opengl.
- Cycle count edit dialog box fixed to immediately place
keyboard focus in the text field, and to process
ENTER and ESCAPE keyboard input as OK and CANCEL
button input. You can type a new cycles count without
having to click on the text field first.
- Menu framework and mapper fixed so that menus always
reflect the mapper binding in the menu.
- Windows SDL 1.x fixed async hack to properly destroy
and shut down the parent window again.
- Fixed output=opengl crash on Mac OS X.
- Menu framework support for Mac OS X NSMenu objects added.
This gives DOSBox-X the same useful menu on Mac OS X
instead of the useless default menu SDL 1.x offers.
- Menu framework support for Windows win32 menu resources
added. The Windows menu is now generated at runtime,
the static IDR_MENU resource is no longer used.
- New platform independent menu framework added. Menus
that were once Windows-only are now available on
any other platform including Linux and Mac OS X.
- In-tree SDL 1.x library fixed to #define a special
variable that the code now requires to compile
SDL 1.x builds. The option to use your host SDL 2.x
library is left open.
- C++11 is now mandatory to compile DOSBox-X
0.82.6
- Resizing the window in SDL 1.x Windows builds
fixed to work correctly in the latest build
(1803) of Windows 10. Prior to this fix, resizing
the window on that build would quickly hit a deadlock
that prevented the user from moving or resizing the
window again after that point.
- PC-98 dosbox.conf option added to select between
accurate key/shift mapping, vs an alternate mapping
appropriate for US keyboards (Yksoft1)
- SDL 1.x for Linux/X11 modified to differentiate
Ro and Yen keys despite X11 xkbmap apparently
mapping both to the backslash. The keymap is
queried to detect the scancodes at startup
in order to return the correct SDLK constant.
- SDL 1.x and DOSBox-X mapper code updated to
correctly map Ro, Yen, @ ^ ; : keys on a JP
keyboard in Windows and Linux.
- PC-98 keyboard BIOS handling updated to generate
ASCII codes according to PC-98 layout, instead
of by US keyboard layout.
- Mapper updated to support @ (at sign) key,
^ (caret) key, and a few other keys that
exist on JP keyboards.
- "Hold" modifier for mapper bindings fixed.
It is now possible to tap the key again to
release the hold.
- VHD differencing disk support added (Shane32)
- INT 18h AH=0Ah updated to support 20-line
text mode. Some games use the 20-line text
mode to space the text out vertically.
Such games will display correctly now.
- INT 18h now maintains text layer state
in BIOS data area byte 0x53C, just as
the actual BIOS does.
- Added PC-98 INT 18h function AH=0Ah and
AH=0Bh to support BIOS calls that enable
"Simple Graphics" mode. This fixes
problems with other games having vertical
lines over the graphics, even though
these games do not appear to use the
simple graphics at all. (yksoft1)
- Added support for PC-98 "Simple Graphics"
mode of text layer attribute bit 4. When
enabled, the attribute bit 4 changes
meaning from vertical line to a bit
indicating that the 8-bit character is
a low resolution 2x4 bitmap to be
displayed in the text layer. This fixes
score and status display in Carat.