8086 assembly code visualizer
Run 8086 assembly in your browser, one instruction at a time: registers in hex, decimal and binary, the flags, variables and the stack. No DOSBox needed.
Opening the visualizer…
About the 8086 assembly code visualizer
Write programs the way MASM, TASM and emu8086 courses teach them (.MODEL, .DATA, .CODE, PROC and INT 21h) and run them with StepVioz's own 8086 assembler and emulator, in your browser.
Each step shows the registers in hex, as bytes, in decimal and in binary, the flags, the segment registers, the data segment's variables and the stack, and explains what the instruction did with its arithmetic worked out. INT 21h reads keys and lines from the input box and prints characters and strings.