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The app was mostly made to run small snippets to teach assembly but I'm working on adding multiple source files right now and it's almost finished!

The long term goal was to also add "compile from C" which shows the C to assembly compilation, which can then be emulated line by line.

About the download of assembled binaries, on the roadmap there is upload and download of binaries so you can disassemble some binary, read the contents, compile programs and download them, the harder part is linking. All assemblers (except m68k) could in theory already export the binary, i just did not add the functionality yet.

I also experimented with running the actual java MARS application directly in the browser with chreepj which is a java emulator in the web: https://asm-editor.specy.app/apps/mars

Show HN: A browser IDE for m68000, Z80 assembly (and more), with graphics

https://asm-editor.specy.app/

Asm Editor is an open-source browser IDE for writing, running, and debugging assembly.It currently supports M68K, Z80, MIPS, RISC-V (32- and 64-bit), and x86-64. The debugger includes breakpoints, backward stepping, execution history, register and memory inspection, and other tools intended to make assembly easier to understand.I recently added graphics, keyboard, and mouse support, so it’s now...

( Read More... | 3 comments | on HN )
Re: on Saturday December 13, 2025 @08:52AM (#46254502)
Learn generator functions, the `using` keyword and Symbols in JavaScript by making a very simple animation library
Re: on Monday July 28, 2025 @07:31AM (#44709786)
A website to teach and learn assembly, with an IDE, courses and exams, all in one app.

IDE: https://asm-editor.specy.app/

github repo: https://github.com/Specy/asm-editor

Not yet* https://github.com/Specy/asm-editor/issues/25 And 6502 is a bit harder
Re:Learn Assembly the Interactive Way on Monday July 14, 2025 @07:57AM (#44559082)
A course and platform for learning different assembly languages. The platform itself allows you to write different assembly languages like M68K, MIPS, RISC-V and X86. I just added a course that teaches the basics that every assembly languages share and by utilizing the IDE that I built, I can embed snippets of interactive code directly inside the course!
Thought this was the perfect place to share a project I've been working on for a few years: https://asm-editor.specy.app

It's an interactive online IDE for many assembly languages, currently M68K, MIPS, RISC-V and X86 (I need to improve X86). It has a ton of features that are made to teach assembly programming, and it can be embedded in other websites.

Re:A different approach at liquid glass on the web on Wednesday June 18, 2025 @06:40PM (#44313897)
It does kind of need changes to the browser to implement properly. My implementation is more of a trick to "make it work" but it's absolutely not something doable or usable in reality.

There is no way (for now) to make something like it with pure web technologies, I was initially hoping that with the Houdini API it would be possible, but it seems not. It would be a really cool addition though

Re:A different approach at liquid glass on the web on Tuesday June 17, 2025 @01:54AM (#44296099)
Most liquid glass implementations in the web are using feDisplacementMap to simulate the glass, but what if we actually use a 3D piece of glass to do it?

This approach takes a copy of the page and puts it inside a 3d context (three.js) to then simulates the page scroll to seem like a 1:1 copy of the paint layer of the browser. The post goes through the two approaches and shows a demo of liquid glass.

The implementation of glass is rather basic, but with the access to the whole paint layer, anything else can be added to it (PR welcome!)

I made a web IDE to teach assembly languages. My goal is to have a single webapp where there are courses, documentation and IDE of all assembly languages.

It's full of features to make it easier for beginners to understand how things work:

- instruction undo and step - breakpoints - function stack tracing and stack frame view. - history viewer (shows the side effects of each instruction) - I/O and memory viewer (both number and text) - number conversions for registers and memory - testcases (useful for professors making exercises) - auto completion and inline errors, etc...

It also has an embedding tool to be able to embed the ide in other websites. And be able to share a project by URL. This way professors can create their own courses and exercises to share with their students.

Repo: https://github.com/Specy/asm-editor

Next i want to improve the x86 emulator, add ARM, Z80 and chip-8.

I'm also writing assembly courses, if anyone wants to help out writing them, the repo is open to contributions!

Re:The all in one web editor for M68K on Monday January 09, 2023 @05:18AM (#34308745)
Added!
Re:The all in one web editor for M68K on Saturday January 07, 2023 @01:27PM (#34290967)
I'm gonna add it those days
Re:The all in one web editor for M68K on Saturday January 07, 2023 @01:11PM (#34290797)
Yes I mean in the context of the interpreter, in the end both quick and not quick instructions end up running the same code in the interpreter, but I'll add it anyway
Re:The all in one web editor for M68K on Saturday January 07, 2023 @12:58PM (#34290664)
Hey, I'm the developer, I noticed some activity on GitHub so I wanted to find out where it was coming from, the interpreter itself is for learning, I haven't added the quick instructions as they weren't really useful speed wise, but I'll add them anyway just for allowing the syntax, if anyone finds issues, let me know on GitHub, the app is still in beta