Visual 6502 in JavaScript

This simulator uses HTML5 features only found on the latest versions of browsers and needs lots of RAM. If you have trouble, please check compatibility.

Hit '>' to zoom in, '<' to zoom out
Left-click and drag to scroll around
Enter your own program into the array of RAM

Please wait while graphics is initialising...

Expert:

x: 0
y: 0

Source code is available on github visual6502. Online 6502 emulator and assembler from 6502asm.com and disassembler from e-tradition.net
In addition to this JavaScript project, see our Python-based simulator which may be easier to customize, verify, and apply to the study of long programs.