Emacs-riscv – A RISC-V emulator written in Emacs Lisp
Hi HN, This is a small RISC-V emulator I’ve been hacking on in Emacs Lisp as a fun weekend project. It started mostly as a way to better understand the RISC-V spec by implementing things myself, and also as an excuse to write more non-trivial Emacs Lisp. It currently focuses on RV32I and related basics, and is very much not optimized or production-ready. If you’re into RISC-V, emulators, or just enjoy seeing unusual things built in Emacs Lisp, feedback and comments are welcome Happy hacking!
Emacs-riscv – A RISC-V emulator written in Emacs Lisp launched on January 5, 2026 with 10 votes, #1,059 of 14,584 launches that month and more than 90% of that year's launches.
In plain words
Emacs-riscv is a RISC-V emulator written in Emacs Lisp that implements the RV32I instruction set and related basics. Created as a weekend project, it serves developers interested in understanding the RISC-V specification through practical implementation or those curious about running non-trivial programs in Emacs Lisp. The emulator is experimental and unoptimized, designed more for learning and exploration than production use.
written from the facts on this page · September 2026
From the sources
Contribute to gongo/emacs-riscv development by creating an account on GitHub.
A RISC-V emulator written in Emacs Lisp. Inspired by cnlohr/mini-rv32ima and bokuweb/r2 . # Clone the repository git clone https://github.com/gongo/emacs-riscv.git cd emacs-riscv # Compile Emacs Lisp files (optional but recommended) make compile Add to your Emacs configuration: ; ; Add riscv.el to load path ( add-to-list 'load-path " /path/to/emacs-riscv " ) ; ; Load the package ( require 'riscv ) ( require 'riscv-console ) Running Linux 1. Obtain Linux Kernel Image To run Linux interactively, you need a Linux kernel image. cd /path/to/mini-rv32ima/mini-rv32ima make DownloadedImage This downloads and prepares the kernel image as DownloadedImage . git clone…from github.com
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