You might fondly remember the days of the Intel 486, but you probably don’t have one on your desk anymore. If you’d like to emulate that classic hardware, you can now do it in your browser, thanks to [Jan de Jager].

What [Jan] has built is a 100% browser-based emulator for an Intel 80486DX2-66 PC. Obviously, it’s not just a CPU that’s being emulated here—[Jan] has gone so far as to throw in the motherboard and ISA/VLB adapter card emulation necessary to make this a real and functioning computer that runs inside a solitary browser tab.

It’s all written in ES6 JavaScript. It will happily run SeaBIOS, VGA BIOS, FreeDOS 1.3, and a whole bunch of classic games, like Wolfenstein 3D, Duke Nukem, and DOOM. There’s even a control panel where you can configure the PC how you like, from storage to expansion cards and all the rest.

Once upon a time an emulator was an application you had to download and run, hoping all the while that your new machine had enough grunt to emulate the classic hardware of your desires. These days, we have endless piles of CPU cycles to throw at everything and you can do it all within a browser. Or even on a tiny microcontroller, if you feel like it!

Delta 2.0 is here with Sega Genesis emulation, RetroAchievements, a Liquid Glass redesign, animated controller skins, and iPhone Duo support.

Last year, we reported on Red Viper, a Virtual Boy emulator that added a splash of Super Game Boy-style color to Nintendo's famously failed red-on-black "portable" 3D headset from the '90s. Now, a new emulation experiment, VBoy Color, has taken the concept to a higher level, using a tile-based palette system that allows for many more distinct colors in each individual Virtual Boy frame.

Rather than simply replacing the Virtual Boy's four shades of red with four different colors, VBoy Color's readme files explain how the emulator's game-specific Color Packs can assign a distinct four-color palette to each 8x8 tile in a Virtual Boy scene. That means the emulator can differentiate between green pipes, grey platforms, and red brick wall in Mario Clash, for instance, even though all those in-game objects share the same overlapping red hues in the original game.

The Game Boy Color-esque results feel like being transported into an alternate history where Nintendo invested in a full-color display rather than cheaper red LEDs for the Virtual Boy hardware. The increased contrast between differently colored elements is particularly welcome in games like Jack Bros. or Vertical Force, where the original red-on-red display often makes it hard to differentiate the player-character from busy red background elements.

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