js-8080-sim

Interactive assembler and simulator for the 8080 CPU. Can be used from the command line (on Node.js) or in the browser, with a simple UI):

How it works

The code for the assembler and simulator is in the src/ directory.

The files parser.js and assembler.js implement a 8080 assembler. Assemblers typically have different syntaxes; this one attempts to remain close to the "Intel 8080 Assembly Language Programming Manual" book. Not all directives are implemented - PRs welcome!

The file sim8080.js is the 8080 simulator; it is forked from https://github.com/maly/8080js with some minor tweaks, and retains its original BSD license.

For an example of using the assembler and simulator from the command line, see sample/sample.js.

Web UI

The web UI has no server component; it runs purely in your browser and doesn't make any HTTP requests. It does use the browser's local storage to save the last program you ran, for convenience. You can play with a live version here: https://eliben.org/js8080

js-8080-sim uses browserify; see Makefile for the invocation.

The files index.html, ui.js and js8080simBundle.js should be distributed together to make it all work in the browser.