766497bd5d
Rebuilds libv86.js from felixrieseberg/v86@windows95-base, which now carries vga-defer-vbe-disable-v86: when a windowed DOS VM's vgabios writes dispi[4]=0, Win9x's VDD passes that through (it doesn't know about ports 1CE/1CF) while virtualising the rest of the mode-set, so v86 used to drop out of LFB rendering with the legacy registers still holding SVGA values and the screen turned to planar garbage. The fix defers the disable until a legacy attribute-mode write actually reaches the hardware. debug-harness: WIN95_PROBE_DOSBOX=1 opens command from Run, types dir, optionally Alt+Enters (WIN95_PROBE_DOSBOX_ALTENTER=1). WIN95_PROBE_VGATRACE=1 wraps the VGA io.ports[] entries (not the VGAScreen methods, which are captured by-value at registration) and dumps [port, op, value, eip+VM/PE/CPL] tuples to /tmp/win95-vgatrace.json — that EIP/mode column is what pinned the leak on V86-mode vgabios at C000:2C8x.
windows95
This is Windows 95, running in an Electron app. Yes, it's the full thing. I'm sorry.
Downloads
 Windows |
32-bit
💿 Installer
|
📦 Standalone Zip
64-bit 💿 Installer | 📦 Standalone Zip ARM64 💿 Installer | 📦 Standalone Zip ❓ Don't know what kind of chip you have? It's probably `x64`. To confirm, on your computer, hit Start, enter "processor" for info. |
 macOS |
Apple Silicon Processor
📦 Standalone Zip
Intel Processor 📦 Standalone Zip ❓ Don't know what kind of chip you have? If you bought your computer after 2020, select "Apple Silicon". Learn more at apple.com. |
 Linux |
64-bit
💿 rpm
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💿 deb
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Does it work?
Yes! Quite well, actually - on macOS, Windows, and Linux. Bear in mind that this is written entirely in JavaScript, so please adjust your expectations.
Should this have been a native app?
Absolutely.
Does it run Doom (or my other favorite game)?
You'll likely be better off with an actual virtualization app, but the short answer is yes. In fact, a few games are already preinstalled - and more can be found on the Internet, for instance at archive.org. Thanks to @DisplacedGamers I can recommend that you switch to a resolution of 640x480 @ 256 colors before starting DOS games - just like in the good ol' days.
Credits
99% of the work was done over at v86 by Copy aka Fabian Hemmer and his contributors.
Contributing
Before you can run this from source, you'll need the disk image. It's not part of the
repository, but you can grab it using the Show Disk Image button from the packaged
release, which does include the disk image. You can find that button in the
Modify C: Drive section.
Unpack the images folder into the src folder, creating this layout:
- /images/windows95.img
- /images/default-state.bin
- /assets/...
- /bios/...
- /docs/...
Once you've done so, run npm install and npm start to run your local build.
If you want to tinker with the image or make a new one, check out the QEMU docs.
Other Questions
- MS-DOS seems to brick the screen
- Windows 95 is stuck in a bad state
- I want to install additional apps or games
- Running in Docker
- Running in an online VM with Kubernetes and Gitpod
License
This project is provided for educational purposes only. It is not affiliated with and has not been approved by Microsoft.