MIPS Web Simulator | Charbel Estephan

THE GOAL

Debugging MIPS assembly by hand meant constantly losing track of register state, with no easy way to see execution flow instruction by instruction. I built a browser-based simulator to fix that: a more interactive, beginner-friendly way to watch a program run, inspired by a step-debugger feature in the IDE.

Step-through execution, one instruction at a time
Real-time register and memory panels update as you step
Runs entirely in the browser, no toolchain install required
Hosted as a static site on GitHub Pages

MIPS Web Simulator interface showing step-by-step assembly execution with live register and memory values — The simulator mid-step. The highlighted line is the next instruction about to execute, with Run All, Step, and Reset controls above it and the register/memory panels below updating live as you step through.

HOW IT WORKS

It steps through MIPS assembly one instruction at a time, with register and memory panels updating live as you step. It runs entirely client-side in JavaScript, no toolchain install, no backend, and is hosted as a static site on GitHub Pages.

LIVE DEMO ↗ · SOURCE ↗

STACKJAVASCRIPT

TARGETSMIPS ISA

HOSTINGGITHUB PAGES

MIPS WebSimulator