Macintosh.js Offers 1991 Quadra Emulation


Did you have a Mac back in the 90s? Was it a 1991 Macintosh Quadra 900 running Mac OS 8.1? If so you can take a step back in time with an emulator written by Felix Rieseberg.

The Quadra 900 was based upon the Motorola 68040 processor. It was not a machine for the masses as it cost US$7,200 in 1991. It was the first model to be able to run Mac OS 8 when it was finally released.


We have come a long way in computing since then. Now you can download an App implementing a Quadra/Mac OS 8 emulator Macintosh.js. The emulator can be downloaded from Github.

Screen Shot 2020-08-02 at 2.09.36 PM

The App is written in Javascript and versions are available for macOS as well as for Windows and Linux.  The emulator includes several apps and games from a 1997 MacWorld demo CD. The games include Oregon Trail and Dungeons & Dragons. Demos of other software are included as well. Mac OS 8 was released in 1997.

According to info on Github “Yes, you can [transfer files to and from the virtual machine]. Click on the “Help” button at the bottom of the running app to see instructions. You can transfer files directly – or mount disk images.” You CANNOT connect for the internet.

In spite of the emulator being written in Javascript (an interpreted language), it is remarkably agile. This step back in Mac history might be something for you to kill a few hours.

See my other Mac & macOS related posts

If you are looking for other interesting macOS software, visit my macOS Software Directory page. Currently, there are over 640 titles indexed with more than 220 available for FREE 

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