Z80 Disassembler Online Full |top| Jun 2026
Automatically generates labels (e.g., LABEL_0020 ) for jump targets and memory references instead of forcing you to trace raw hexadecimal addresses.
The Z80 expands the original 8080 instruction set using prefixes. For example, DD tells the processor to treat the next instruction as an index register IX operation. A full disassembler processes these multi-byte instructions as a single coherent line.
Ghidra. 2023. Available online: https://ghidra-sre.org/ (accessed on 25 September 2023). Binary Ninja
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. z80 disassembler online full
To get the most out of an online tool, you need to understand how to interpret the results. 1. Understanding the Output Structure A standard disassembler output looks like this: 0008h 87 ADD A,A 0009h 30 05 JR NC,0010h 000Bh 24 INC H Use code with caution. The memory location ( 0008h ). Hex Data: The raw machine code ( 87 ). Mnemonic: The assembly instruction ( ADD A,A ). 2. Addressing Memory Discontinuities
Moving from machine code (hexadecimal bytes) back to assembly language can be tedious. Online Z80 disassemblers simplify this process. They eliminate the need to install complex local command-line tools, allowing you to decode binaries instantly inside your web browser. What is a Full Z80 Disassembler?
is a classic "browser-based" tool. Although the original site has experienced downtime, it is still accessible via the Internet Archive. It was noted for being extremely fast, handling large programs like zStart 1.1 in under a second. Automatically generates labels (e
| Tool | Key Feature | Platform | Notable Strength | | :--- | :--- | :--- | :--- | | (via OnWorks) | Runs in a web-based virtual Linux desktop | Web, Linux | Full Linux command-line tool in a browser window; excellent for learning the tool. | | z88dk-dis | Multi-CPU support | Command Line | Supports many Z80 variants (Z180, Rabbit, GameBoy) and understands assembler map files. | | z80-smart-disassembler | Automated analysis of data/strings | Python | A "smart" reverse engineering tool that identifies and labels strings and data areas. | | DeZ80 | Undocumented instruction support | Library/CLI | Complete decoding/encoding with support for chained opcodes. | | Rhombus | Full suite with GUI | GUI, CLI | Tracing disassembler with tile editor, palette editor, and hex editor all in one. | | Disark | Cross-Assembler Source Converter | GUI, CLI | Converts disassembled code into syntax for various assemblers (Winape, Pasmo, Vasm). | | SkoolKit | Specialized for ZX Spectrum | Python | Creates annotated, hyperlinked HTML disassemblies of ZX Spectrum software. |
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
It provides a clean interface where you can upload a binary file or paste hex code. It allows you to select the starting address, which is crucial for code that doesn't start at 0000h . Available online: https://ghidra-sre
Decrements the B register and jumps if the result is not zero (loops). Hardware I/O
Switches standard register operations to use the IX index register.
So, go ahead. Dump that old EPROM from your basement. Drag the file into a full-featured online Z80 disassembler. And watch as the ghosts of code past begin to speak their native tongue once more.
Instructions like 18 FE point backwards or forwards based on a signed offset byte ( FE = -2). A quality online tool computes the final mathematical destination address automatically for your viewing ease. Summary of Benefits
hardware projects, or understanding how vintage software for machines like the ZX Spectrum or TI-83 calculators operates. Key Online Z80 Disassemblers Online Z80 Disassembler