0.82.25
- Added 1920x1440 4:3 HD VESA BIOS mode and increased
scaler limits to support it.
- VESA BIOS emulation now rejects video modes that
exceed the render scaler architecture's limits,
to avoid frozen screens if set. However, VESAMOED.COM
warns the user, so if the user ignores the warning,
VESA BIOS emulation will allow user-defined modes
that exceed the limits anyway.
- VESAMOED.COM will now warn you if the custom mode
you modified exceeds the render scaler's limits.
- VGA emulation now reports render scaler limits
in the logfile at startup, if debug logging is
enabled.
- Render scaler code now logs a warning when it
rejects a video mode that exceeds the render
scaler limits.
- S3 emulation now allows 16MB of video memory.
- Due to continuous problems with DOS games and a
very long VESA modelist, the defaults for VESA
BIOS options in dosbox.conf have been changed to
limit the modelist to something a late 1990s
VESA BIOS would list. New defaults include a
maximum resolution of 1280x1024, the removal of
4bpp 16-color packed, unusual video modes,
"High Definition" TV broadcast modes, and the
extra explicitly defined 24bpp modes to complement
VBE1.2 32bpp modes. Those options remain
changeable and all limits can be lifted with
settings in dosbox.conf if wanted.
- Allow using "" in the debugger to specify that
a hex value should be used rather than the
contents of the flag with that name. Allows
hex values of AC, AF, CF and DF to be directly
specified. (Allofich)
- 25.COM, 28.COM, and 50.COM now have different
versions for VGA, EGA, and other IBM compatible
video machines. 28.COM now correctly sets 28 lines
for machine=ega. CGA/MDA/Hercules/etc. still use
INT AX=3h for 25.COM.
- Change 25.COM to use INT 10h AX=1114h (8x16) instead
of INT 10h AX=3 (set 80x25 mode).
- INT 10h AX=1111h (8x14) and AX=1113h (8x8), related
to 28.COM and 50.COM, now range check the current
cursor row against number of rows to keep it on
screen.
- Fixed ADDKEY "full" command not turning on the
full core when used with a delay. (Allofich)
- INT 10h AX=101Ah Get Video DAC color-page state fixed
to restore display after blanking it due to Attribute
Controller read and write operations. This fixes
IBM PC compatible MS-DOS game "Blue Force".
- Debugger: "VGA AC" now shows AC disable bits as well
as the internal state indicating whether the last
byte written to 3C0h was handled as the index.
0.82.24
- FDC emulation now allows READ command to look for
sector numbers that are out of range in order to
support booter games that read out of range sector
numbers as part of their copy protection.
- Windows SDL1 window resizing fixed to avoid snapping
and jumping issues when the window is sized down
to the point the menu bar doubles or triples in
height due to menu item wrapping.
- FDC clear DMA terminal count automatically (with a
warning printed to the log) at beginning of FDC
read/write (PC-98 booter game Star Cruiser).
- FDC DMA read/write failure now causes FDC to signal
an error, and the debug output will say so.
- FDC debug output now shows motor bits in the correct
order, not backwards
- CONFIG.COM and MIXER.COM are now registered only at
DOS kernel startup, to resolve their disappearance
after RE-DOS or guest system reset.
- Some OpenGL cleanup and fixes for when compiling for
Mac OS X Catalina.
- Shell startup now prints the actual mapper binding
(whatever it is) for the Host key instead of assuming
F12/F11.
- "Ro" key in PC-98 mode in the mapper interface now
clarifies that it is Ro / _ since the shift state is
the underscore.
- Shell startup code fixed to show F11 for Windows and
F12 for other platforms properly instead of always
showing F11.
- Added BOOT option --pc98-graphics to start up with
graphics layer enabled in order to run HDI images
using QMOUSE and games that expect NEC MOUSE.COM
behavior of showing graphics layer on driver init.
- BOOT now hides graphics layer on startup in PC-98 mode
to reflect real hardware.
- INT 33h mouse emulation now enables graphics layer
on mouse startup and INT 33h AX=0 to imitate NEC
MOUSE.COM behavior seen on real PC-98 hardware. This is
needed for some Orange House games that assume this
behavior, without which the graphics are invisible.
- INT 33h define range functions now include separate
range correction for text mode vs graphics mode.
- Help sections in Configuration GUI have been improved,
they are now easier to browse and read. (aybe)
- CONFIG: added description for 'securemode' (aybe).
- Integer properties are now correctly saved when
they have been changed in configuration GUI (aybe).
- Some scenarios with command history could display
garbage characters from previous/next command (aybe).
- Fixed all hard disk images created by IMGMAKE having
VHD footers. (Allofich)
- Windows Visual Studio solution: (aybe)
- cleaned and clarified project properties for projects
- removed configurations that didn't make sense
- fixed broken debugging
- consolidated to use single versions of SDK and IDE
- enabled faster builds (multi-processor compilation)
- fixed broken builds, e.g. ARM, ARM64
Changes:
- Serial and parallel file output now disable stdio
buffering so that output is more immediately
accessible to the user.
- Added file output to serial port emulation.
- Parallel port emulation now support both dev: and
file: to specify that LPTx output go to a file,
not necessarily a device by name.
- Fixed bug that capped vmemsizekb to 8KB.
- BIOS bootup screen now shows correct text for CPU
type instead of "? CPU" when cputype=auto.
- PC-98 256-color mode fixed to ignore doublescan
and 200-line bits of the GDC to match real hardware
behavior. This fixes display problems with
"Alone in the Dark"
- BOOT command will now always set 640x200 8-color
graphics mode when booting PC-98 disk images,
to match the apparent behavior of real hardware.
- PC-98 hardware apparently allows writing port 6Ah
to jump directly to 256-color mode from 8-color
mode, update DOSBox-X emulation to allow it.
This fixes the PC-9821 port of "Alone in the Dark".
- Slow CGA memory access handler now wraps to 16KB
correctly, and resolves a segfault that can happen
if the last 16KB is accessed by the guest if
vmemsizekb=16.
- vmemsize default is now -1, which means to pick a
video memory size automatically.
- Added PC-98 INT 1Bh AH=03h SCSI BIOS command, which
allows FreeDOS98 to boot.
- INT 33h emulation fixed not to reset mouse min/max
range if the new video mode is a VESA BIOS SVGA
mode (not a standard VGA mode). Some games seem to
define the mouse min/max range AND THEN set the
VESA BIOS mode, not the other way around.
- INT 33h define range functions now apply rounding
to the max range if the range is close to the
dimensions of the screen, for games like Daggerfall
that set the cursor maximum range to values close to,
but not exactly, the dimensions of the VGA screen.
- INT 33h define range functions updated to accept max
ranges for mapping host to guest if set just after
video modeset or if those INT 33h functions are called
when no mouse buttons are down.
- INT 10h AH=4Fh AL=08h (Set DAC width) now correctly
set AL=4Fh to indicate the call is supported.
- VGA DAC palette writes are now ALWAYS masked to 6-bit
unless 8-BIT DAC mode is ON and enabled. This fixes
palette problems with Amulets and Armor.
- VGA DAC 6/8-bit palette management code simplified
- Added dosbox.conf option to instruct DOSBox-X to leave
the PC speaker clock gate enabled if set, for games
that use that PIT output as a time source. Setting
the option to "true" allows "Bàoxiào sānguózhì", a game
with strange and elaborate timing code, to run without
hanging at the second title screen.
- VGA port 3DAh "undefined bits" setting changed to 0x04
to accomodate "Blues Brothers"
- Configuration GUI: If the settings are scrollable,
tabbing between fields will now auto-scroll to the
field and make it visible.
- In the configuration GUI, scroll wheel input no longer
changes the window focus.
- Set CPU cycles dialog box layout fixed.
- Added 'skip encoding unchanged frames' option to
dosbox.conf. If set, AVI video capture will skip
video frame compression if the frame has not changed
from the previous frame. Option is off by default
at this time in case it causes any issues with users
and their video editing software.
0.82.22
- Added Normal2x render scalers so that 'force scaler'
for 1x2 or 2x1 scalefactors works and you can scale
up 320x200/640x200 VGA modes and 640x200 CGA modes
by 2x.
- Main window titlebar now reflects whether or
not the debugger interface is active.
- Debugger interface now flushes terminal input
upon entering the debugger, so that keyboard
input prior to entering the debugger is ignored.
- Debugger mapper shortcut and menu item are now
a toggle. Selecting once will enter the debugger
and selecting again will resume emulation.
- cycles=max now displays cycle percentage correctly
instead of showing e.g. 100 cyc/ms
- (Allofich) Note and ignore INT 33, AX=53C1 call
for the Logitech CyberMan.
- Fixed odd code addition that disabled (through
the configuration) XMS, EMS, and UMB when
booting a guest OS. This fixes a problem where
those services are not available when rebooting
back into the DOSBox-X shell from a guest OS.
- CGA 640x200 and MCGA 640x480 modes fixed to
have proper refresh rate when machine=mcga,
instead of 140Hz.
- MCGA horizontal active display register
encodes N - 1, not N, according to real
hardware register dumps.
- INT 10h modes 2 and 3 updated set MCGA CRTC
write protect bit, to match real PS/2 hardware
behavior, and to unlock CRTC registers during
mode set.
- PC-98 VSYNC interrupt now fires at vertical
retrace start (as documented) instead of at
active display end behavior borrowed from
DOSBox VGA emulation. This fixes "Tonight"
by Swat.
- Fixed mistake that placed N88 ROM BASIC stub
(something specific to PC-98) in memory even
in IBM PC/XT/AT emulation mode.
- Fixed some callback slot leaks that can cause
DOSBox-X to run out of callback slots if you
reset the guest system too much.
- Fixed invalid callback and errant interrupt
handling during BIOS reset delay that happens
if you use the keyboard shortcut to trigger
system reset.
- XMS emulation resets global enable and local
enable state on XMS emulation startup to fix
crashes related to inability to control A20 gate
after system reset or DOS kernel restart.
- Debugger "SM" command now accepts segment:offset
syntax for memory location to write.
- Fixed INT 21h AH=65h bug that returns DBCS table
for AH=4h that should return filename uppercase
table.
- Configuration GUI property settings are now
shown in a single column wide list with scrolling.
- In the configuration GUI, help dialogs will now
present the help text as a scrollable region if
there is too much to fit on screen.
- dosbox.conf mixer rate will now accept any
sample rate from 4KHz to 192KHz instead of only
fixed specific sample rates.
- cascade interrupt ignore in service setting now
accepts true, false, and auto. "auto" is now the
default, and will choose true or false depending
on machine type for correct emulation either way.
It should no longer be necessary to add
"cascade interrupt ignore in service=true" to
your dosbox.conf every time you want to run a
PC-98 game properly.
- PC-98 FM board emulation will now load SOUND.ROM
into segment CC00h if available, if FM board
emulation is enabled.
- PC-98 INT 18h AH=30h updated to return AH=05h
AL=00h BH=00h if success, AH=00h AL=01h BH=01h
if failure. This is needed to get Puyo Puyo 2
to work, which for some reason fails if a call
to set 15KHz mode works.
- PC-98 LIO and SOUND BIOS entry points, while
still not implemented, have been updated to
print the name of the call according to an
online reference.
- DOS FCB rename now supports renaming the
volume label as MS-DOS does.
- Fixed bug that prevented proper DOS FCB rename
if the FCB used to rename is extended.
- FAT filesystem driver updated to also store
updated volume label in the boot sector of the
partition, as per MS-DOS FAT standards.
- FCB create can now be used to set a FAT
filesystem label. MS-DOS LABEL.EXE works
correctly now.
- FAT filesystem driver now allows LABEL command
to change the FAT volume label of mounted disk
images.
- DOS kernel updated to support basic FCB methods
of deleting/setting the volume label, at least
on local folder mounts.
- DOS kernel will now return the volume label of
FAT filesystems mounted from disk images.
- LABEL setting code fixed not to treat label as
if an 8.3 filename.
- LABEL is no longer a builtin shell command and
appears on drive Z: as LABEL.COM
- LABEL reimplemented to imitate MS-DOS behavior
with regard to how it handles the command line.
- File I/O checking and cleanup (Allofich)
- Integrated commits from mainline (Allofich)
- Handle errant IRQs as a real BIOS does. Also
remove r3263 workaround, as it's no longer
needed.
- Fix flag behavior of several shift/rotate
instructions, cause exceptions and fix
potential 'pop ss' problems
- Add support for Print Screen key and
interrupt. In-game screenshot feature
of Descent and Descent 2 now works.
As a fork of DOSBox, DOSBox-X retains compatibility with the wide base of
DOS games DOSBox was designed for.
It also goes further, with a focus on accurate emulation of the hardware,
and many more ways to tweak and configure the DOS virtual machine.
The DOSBox-X team believes that a better way to emulate the legacy PC platform
is to give the user all the options they need to emulate everything from
original IBM PC hardware with 64KB of RAM all the way up to late 90's
hardware, whatever it takes to get that game or software package to run.
