DOSBox-X Git (December 15, 2025)

DOSBox-X Git (2025/12/15) enhances the DOSBox emulator, allowing it to run older MS-DOS games on modern systems. The update includes significant changes to integrated graphics (IG), such as support for various bit depths, improvements to VESA modes, and the introduction of several graphics functionalities. Key fixes address issues with high-resolution color modes, and a new linear framebuffer has been implemented. Additionally, SDL settings were adjusted to improve window handling and prevent crashes. The update emphasizes compatibility and performance for legacy applications, making it an essential tool for retro gaming enthusiasts.

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DOSBox-X Git (2025/12/15) has been compiled. DOSBox-x is a variant of DOSBox. This software simulates an Intel x86 PC with sound, graphics, mouse, joystick, modem, and other features essential for running various antique MS-DOS games that can’t be executed on contemporary PCs and operating systems like Microsoft Windows XP, Windows Vista, Linux, and FreeBSD.

DOSBox-X Changelog:
* DOSBox IG 15/16/24/32bpp
* DOSBox IG: Enabled VGA register lockout and disabled AC disable bit to ensure screen functionality, as INT 10h cannot execute with lockout
* DOSBox Integrated Device enforced IG format during drawing setup
* DOSBox-X IG 4bpp packed
* DOSBox Integrated Graphics: Added bank switching SVGA support, resolved issues with 16-color planar VESA modes, and rectified bank switching access for 256-color modes
* Fixed high-resolution 16-color planar VESA modes in DOSBox Integrated Graphics
* Initial VESA BIOS implementation, with 256-color operational
* DOSBox Integrated Graphics functionality as a PCI device
* Extensions for VESA BIOS in DOSBox Integrated Graphics
* Revealed VGA memory base and size through DOSBox Integration Device
* Provided a linear framebuffer for the DOSBox IG
* Initiated DOSBox Integrated Graphics SVGA machine type. Operates as VGA for DOS applications, but is managed by DOSBox Integration Device for SVGA modes and Windows drivers
* Merged pull request #5992 from rebb/fix-opengl-sdl-resize-issue
* Rectified the verification process
* Corrected comment typo
* Restored default setting of SDL_HINT_FRAMEBUFFER_ACCELERATION to 1
* Ensured SDL2 window is recreated when exiting fullscreen
* Disabled SDL_HINT_FRAMEBUFFER_ACCELERATION by default, as other settings may lead to crashes in specific scenarios. Override is still possible via the SDL_FRAMEBUFFER_ACCELERATION environment variable
* To aid in transitioning JEGA output and DBCS processing to the new memory access function, memory access is now a macro, and cursor color handling has been corrected to work appropriately with map13/map14 as well. Currently, some extra JEGA/DBCS processing code is commented out and marked with a FIXME.
* Fixed EGA/VGA text rendering to support CGA/HGC map13/map14 bits