SICO is a Single Instruction COmputer that mimics the functionality of a normal computer while using only one computing instruction. This is like going into a forest with no tools and trying to build a house. Since we only have one instruction, most modern conveniences are gone. Things like multiplying numbers or memory allocation need to be built from scratch using SICO’s instruction.

A collection of illustrated notes on the virtual machine uxn.

In my opinion, the focus on minimalism is crucial for guaranteeing the longevity of both the VM itself and the software running on it. Exposing large, complex APIs to software running on the VM can become a liability. One of the biggest issue with modern web browsers, in my opinion, is that they’ve become so complex, it’s basically impossible to guarantee that your web app will behave the same on different browsers.

Instruction Encoding, aka Virtual Machines, Part 1