Visual Assembler – Commodore 64 (2026, Zsolt Tarczali)

The newest version of Visual Assembler has been released which is a visual block-based 6502 assembler for the Commodore 64.

C64 Visual Assembler is a desktop application that lets you write Commodore 64 machine code programs visually – no text editor required.

With this tool you can easily create machine codes for Commodore 64 without typing anything while the app translates everything in real time.

Features

  • Block-based editor — drag & drop 6502 mnemonics onto the program canvas 
  • Real-time compilation — see the assembled bytes instantly as you build
  • ASM view — clean, readable assembly output with labels and comments
  • Monitor view — raw hex dump like a real C64 monitor (>0801  A9 00 8D 20 D0…)
  • Memory map — visual overview of your program in C64 address space
  • KERNAL autocomplete — built-in list of C64 KERNAL routines for JSR/JMP
  • Sample programs — text scroller, sprite demo, border color effects and more
  • VICE integration — launch your program directly in the VICE emulator
  • Light & dark theme, English & Hungarian UI
  • Save & load projects as JSON

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