DOSBox Staging’s new update makes DOS gaming better on modern PCs

DOSBox Staging has a new update, and it’s much bigger than the version number might suggest. This release touches almost every part of the emulator, from graphics and audio to mouse handling, disk images and configuration. Some of the changes are immediately visible. Others work quietly in the background. Put them together, though, and the new update feels cleaner, easier to configure and better suited to modern PCs and displays.

Graphics get a serious upgrade

Display handling is one of the biggest areas of change. DOSBox Staging’s new update now includes CRT colour emulation, which changes how colours and brightness are presented before the image reaches your monitor. You can choose different monitor profiles and adjust brightness, contrast, saturation, gamma and colour temperature. Wide-gamut displays get more attention too. Support now covers DCI-P3 and related colour spaces, while macOS can rely on the operating system’s own colour management.

There’s also a reworked frame presentation system. Variable refresh rate displays using AMD FreeSync, Nvidia G-Sync or HDMI 2.1 VRR should now work with less configuration. The old frame presentation options have been simplified into dos-rate and host-rate modes.

That makes things easier to understand. Vsync has been cleaned up as well, with previous performance penalties removed. Integer scaling also behaves better on common 1080p, 1440p and 4K displays, which should mean less unwanted letterboxing in several DOS video modes.

FMV playback gets cleaner

Old DOS games often used some unusual tricks to squeeze video onto limited storage. One of those techniques involved alternating black lines across full-motion video. DOSBox Staging can now detect and process that type of footage automatically.

The important part is that it doesn’t apply the same treatment to everything on screen. Menus, subtitles and interface elements can remain untouched while the video itself gets processed. There’s also a checkerboard dedithering option. Games sometimes used patterned pixels to fake colours they couldn’t display directly. The new option can turn those patterns into solid colours, and you can combine it with existing shaders and scaling options.

Roland SC-55 emulation arrives

Audio gets one of the most interesting additions in the new update. DOSBox Staging now supports Roland SC-55 Sound Canvas emulation through Nuked-SC55. Plenty of DOS games were written with General MIDI hardware like the SC-55 in mind, so this adds another way to reproduce those soundtracks.

Several SC-55 hardware revisions are supported. Version 1.21 is used by default because it works well with a wide range of software. You’ll still need the appropriate original ROM files. Without them, the emulation can’t produce sound.

The mixer has also gained a denoiser that can reduce leftover noise from OPL synthesis and Sound Canvas output. FluidSynth gets a useful round of improvements too. It can now apply automatic chorus and reverb settings for several SoundFonts, handles portamento better and lets you change SoundFonts without restarting the emulator. Gravis UltraSound behaviour has been adjusted to match the original hardware more closely. Sound Blaster Pro stereo channels have also been corrected in games affected by swapped output.

Mouse and keyboard handling feel more practical

Input changes aren’t flashy, but they can make a real difference during everyday use. The built-in DOS mouse driver now defaults to a two-button mouse and includes extra controls for movement and compatibility. That should help with games that behave strangely with modern input.

Windows 3.1 mouse handling has also been revised. Keyboard capture has changed too. System shortcuts can now be handed directly to the emulated environment when needed, and mapper changes are saved immediately instead of waiting until later.

Clipboard support is another welcome addition. The new CLIP command can send DOS command output straight to the host clipboard. You can also use Ctrl+V to paste host text into the DOS command line.

That’s a small feature, but anyone who regularly types long paths or commands will probably appreciate it. Keyboard layout detection has also been rewritten so DOSBox Staging can better match the language and layout currently used by the host operating system.

Disk images and mounting are easier to manage

Mounting has received a major cleanup. Floppy and CD-ROM images can now be automounted from drive folders, much like hard-drive images already could. MDS and MDF CD images are supported too. One of the bigger changes is that IMGMOUNT has effectively been folded into MOUNT.

That means one command can now handle directories, disk images, bootable media and overlays. It cuts down on the number of commands users need to remember and makes the whole mounting system more consistent. There’s also a new MAKEIMG command. It lets you create floppy and hard-disk image files directly from the DOS prompt, which is handy when setting up software or building test environments.

Built-in tools get more useful

The new DOSBox Staging update includes an offline user manual, so you don’t need an internet connection every time you want to check a setting or command. There’s also a new SHOWPIC image viewer.

Configuration errors are explained more clearly, and individual settings now have a shortcut that opens their help information directly. These aren’t headline features, but they reduce friction. You spend less time hunting through documentation and more time fixing whatever you’re actually trying to configure.

Plenty has changed under the hood too

Not everything in the new update is visible from the DOS prompt. The release introduces an HTTP API that external tools can use to inspect and change emulated memory. It’s switched off by default, so regular users don’t have to think about it unless they need that kind of integration.

Disk speed throttling is now configurable. Windows gets partial Unicode path support, which should help with folders and filenames outside basic ASCII. FPU emulation is also more accurate on non-x86 processors.

CPU usage while sitting idle at the DOS prompt has been reduced as well. That matters more on laptops and small systems where there’s no reason for an emulator to burn extra processor time while doing nothing.

Compatibility fixes cover games including Tomb Raider, King’s Quest IV, Grand Theft Auto and Phantasmagoria, along with several Sierra titles. DOSBox Staging’s new update is a wide-ranging release. The biggest changes are easy to spot in graphics, MIDI audio, input handling and disk management, but there’s a long list of smaller fixes underneath them. It’s the kind of update that makes the emulator easier to use without completely changing how it works. And for a project this established, that’s probably exactly what most users want.