C64

[dark-star]

I'm confused. So... someone figured out that you can use cc65 to compile C code for the C64, and then he stuck it into an Emscripten version of VICE and put it on the web? I can click on "run" and it looks like it's compiling the two programs, puts them on a floppy, and then runs VICE with that floppy... What's the point of this?

I can see the source code when I click on "show files", but I cannot edit anything, I think I'm obviously missing something here... how is that an IDE? Or is the IDE running inside VICE and I can load it somehow?

Can someone enlighten me?

[19wintersp]

It's a read-only "IDE" of sorts; it's effectively a disk image stored in the cloud, which when run will create a VM and send the output back to you. If you create an account, you can fork that repl to create your own editable version of it, and access the full IDE.

[flohofwoe]

Does it even run locally via WASM? It feels a bit too slow for that.

Here's an alternative though that's a bit closer to an "IDE experience":

https://8bitworkshop.com/v3.8.0/?platform=c64&file=hello.das...

[flerovium]

Similarly confused. This seems to be running on a remote box, but:

(1) How is the information is getting to the frontend?

(2) How is it being rendered when it gets there?

(3) What is being run on the box?

[pwrrr]

Same. It is very slow, and I can't figure out how to do anyhting useful.

[davidw]

Nearly 20 years: https://en.wikipedia.org/wiki/Ettore_Perazzoli

[300bps]

Seems to be VICE running in a web client? VICE is a well-known Commodore 64 emulator that's been around for 28 years. I'm not sure why I wouldn't just run this locally? Serious question - what is the advantage of this?

Running it on Replit I had to answer a multi-stage CAPTCHA identifying all trucks and then it was so slow I couldn't even type without holding the keys down for several seconds before they would register.

[djmips]

Very nice. Some ideas... that you already thought of ;-) For a REPL it's a little too slow...

- Automatically do the LOAD "CPROG",8 and RUN

- Even better. Load the CPROG directly into the memory image and bypass the drive load completely

- Optimize Emulator startup

[amelius]

It's so slow, it's even missing keystrokes.

[sixothree]

It doesn't fit the frame properly on my system.

[flerovium]

We can't really know why it's slow without knowing how it works.

If it were sending keystrokes to a box, you should expect latency <100ms and no bandwidth limitations. It must be a problem with the emulation server. Without knowing more, we can't really know.

[steve_coral]

    POKE 1,52

Works as expected :)

[atlanta90210]

SYS 64738

[ataylor284_]

Very cool. One of the c64's glaring omissions for a hackable machine is a built-in monitor. My suggestion: throw a monitor program (my favorite: https://github.com/jblang/supermon64) onto the one of the disks and you'd have a just enough to do some actual debugging.

[rzzzt]

VICE has a monitor. It can also resolve symbols in KERNAL, IIRC.

[pomian]

Brilliant! Now if I could find my old cassettes, with the programs I wrote, and record them onto a computer, I wonder if they would run?

[flerovium]

Warning: if you try the "Snapshot" option, it will open a window that can't (?) be closed?

[spullara]

I was hoping this was one of their IDEs / runtimes not just a program that happens to be on Replit.

[amasad]

If you fork it you can program it in the IDE including writing C and ASM programs.

But it’s a good idea — will make it a template!

[ChrisArchitect]

Descriptive title: Functional Commodore 64 development environment on Replit

[bouncycastle]

Cool! Is there a way to save as a d64 file and export out of the browser?

[flerovium]

Is this open source?

[amasad]

Yes, most things on Replit are open-source. Just click "show files" on the top-left corner. Also it's powered by Nix, and we wrote a ton about it here: https://blog.replit.com/