GCSx64 is an open-source web-based animated x64 CPU simulator for educational purposes. Provided as a single HTML file for easy distribution and without installation on the Google Chrome Browser. Powered by Unicorn.js, Capstone.js and NASM.
You can try it online here.
- Full NASM x64 assembly syntax support provided by built in NASM assembler
- Visual abstraction of CPU cycle, CPU, registers, flags, memory, bytes, addresses, stack, instruction pointer, stack pointer, base pointer
- Animated step by step execution of the CPU cycle and possibility to skip them each:
- Get instruction
- Execute instruction
- Increment instruction pointer
- Detailed generic animations for basic x64 instructions
- Animated state changes
- Visual representation of instruction, stack and base pointer in the memory
- Visual indication of bytes belonging to the current instruction or stack
- Visual indication of which memory bytes were accessed by the simulator
- Change log to keep track of past instructions and changes in register and memory values
- Code editor with syntax highlighting and assembler feedback
- Selection of demo programs
- Modern design
- Packed into a single HTML file
- Multiplatform
- No installation required
- Deliverable over email, file sharing or simple HTTP server
- Works offline
Clone this repository and follow the instructions in x86/README.md
Licenced under SPDX-License-Identifier: GPL-2.0-only
Copyright © 2021 by Eliane Schmidli and Yves Boillat