VICE.js

Versatile Commodore Emulator for JavaScript

JavaScript port of VICE 2.4 using Emscripten.

Website -> http://vice.janicek.co
VICE -> http://sourceforge.net/projects/vice-emu/
Emscripten -> https://github.com/kripken/emscripten

Status

Firefox 25 - ok
- -o3 -> 100 second asm.js compile time
Firefox 28 - sound clicks
Chrome 31 - slow
Chrome 33 - ok
IE 11 - broken
- Typed array constructor argument is invalid

Tasks

fix joystick
Gamepad API
try using worker thread (emcc --proxy-to-worker)
add other computers
- VIC-20
fix vice menu ui (F12)
fix IE

Example

<!doctype html>
<html lang="en-us">
    <head></head>
    <body>
        <!-- the canvas *must not* have any border or padding, or mouse coords will be wrong -->
        <canvas  id="canvas" style="border: 0px none;"></canvas>
        <script type="text/javascript" >
            var Module = {
                arguments: ['+sound'],
                canvas: document.getElementById('canvas'),
            };
        </script>
        <script type="text/javascript" src="js/x64.js"></script>
    </body>
</html>

Best Configuration Options

async mode:

soundfragsize 2 -soundrate 22050 -soundsync 0

sync mode:

soundfragsize 2 -soundrate 22050 -soundsync 0 -ntsc
ntsc is important because browser requestAnimationFame is going to deliver 60 fps which means less cpu time is wasted during vsync delay

Development

###How to find key codes

in /vice/src/arch/sdl/kbd.c # sdlkbd_press()
this line prints key codes to console when key is pressed

fprintf(stderr, "%s: %i (%s),%i\n",__func__,key,SDL_GetKeyName(key),mod);

activate by compiling vice with SDL_DEBUG flag

Resources

C64 Wiki
Commodore 64 keyboard matrix layout
COMMODORE 64 ROGRAMMER'S REFERENCE GUIDE
Commodore Manuals
Coroutines in C
requestAnimationFrame setting fps
SDL 1.2 to 2.0 Migration Guide
VICE Manual

2.4 KiB Raw Blame History

VICE.js

Status

Tasks

Example

Best Configuration Options

Development

Resources

2.4 KiB

Raw Blame History