ASM-VISUALIZER

ASM-VISUALIZER is a professional 8086 assembly editor, emulator, and debugger — designed for students, educators, and developers who want to truly understand how CPUs work at the hardware level. WRITE A full-featured code editor powered by Monaco (the engine behind VS Code), with NASM, MASM, and TASM syntax support, real-time error squiggles, auto-indent, and syntax highlighting tuned for assembly. RUN Execute 8086 programs instantly with a built-in WASM-powered emulator. No installations, no configuration. Supports INT 10h video output, INT 21h DOS services, text mode, and Mode 13h graphics. DEBUG Step through your code instruction by instruction. Watch registers update in real time with animated highlights, inspect memory byte-by-byte, visualize the stack, and monitor CPU flags as they change. VISUALIZE Live CPU state panel shows all 8086 registers, segment registers, flags, and the stack — updating with every instruction. See exactly what your code does to the hardware. FEATURES NASM, MASM, and TASM dialect support Monaco editor with full 8086 syntax highlighting Built-in WASM emulator — no backend required Step debugger with register animation Memory inspector with hex/ASCII view Stack visualization INT 10h / INT 21h / INT 15h support Mode 13h graphics output (320×200) Dark and light themes Save and share code via GitHub Gist Retro program library with examples Cycle counter and performance metrics Whether you're taking an architecture course, teaching assembly to students, or just curious how computers really work — ASM-VISUALIZER makes it beautiful, intuitive, and fun.