DOSBox is een opensourceprogramma waarmee een DOS-omgeving kan worden geëmuleerd, waardoor het mogelijk is om oude software en spellen te draaien die niet of niet goed meer werken op moderne computers. De laatste versie van DOSBox is echter alweer meer dan zes jaar geleden verschenen. DOSBox-X is ontstaan als een fork en biedt naar eigen zeggen meer flexibiliteit en functionaliteit. Downloads zijn beschikbaar voor Windows, Linux en macOS. De changelog voor versie 2026.01.02 kan hieronder worden gevonden.
DOSBox-X 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.
- Update BOOT command to support multiple disk images with swapping
- 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.
- 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.
- 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.
- 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.
- A patch was submitted to DOSLIB DSXMENU to incorporate non-selectable informational lines of text. Incorporate the updated DSXMENU binaries into DOSBox-X
- 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.
- 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.
- Added SDL2_net to source tree
- Fixed regression of FIFA96 CD label detection
- Log OpenGL context version
- Force SDL window regeneration when exiting fullscreen
- Fixed file handle leak prevents save state file removal
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