Using JaC64 JaC64 is a 100% Java C64 emulator and thus requires Java (1.4 or better) installed. Keyboard emulation is trying to emulate the real C64 keyboard as close as possible. Have a look at the below image for a reminder on that keyboard: 
A typical PC (or Mac?) keyboard would have more keys than the ones on the C64, but also missing a few of the C64 special keys. Here is a mapping of the most important keys on a english keyboard: | PC Key | C64 Key | PC Key | C64 Key | | Left Control | Commodore | [ | @ | | Tab | CTRL (Control) | ] | * | | Esc | Run-Stop | ; | : | | ~ (top-left) | Arrow left | ' | ; | | - | + | Insert | £ | | = | - | End | Arrow up |
Joystick emulation (joystick 1 or 2): - Up: Numpad 8 or arrow up
- Down: Numpad 5,2 or arrow down
- Left: Numpad 4 or arrow left
- Right: Numpad 6 or arrow right
- Fire: Numpad 0 or shift
Other important key kombinations - control-f12 - toggle fullscreen mode (from 1.0 beta3)
- control-alt-backspace - resets the emulator
- control-w - toggle fullspeed mode
Installing/deploying JaC64If you want to use JaC64 on your own website you need to have the c64.jar and a folder called "roms" with the rom files for the C64 for the applet to work. (This is included in the zip file). Then you need to add the applet specification. An example below: <object
classid='clsid:8AD9C840-044E-11D1-B3E9-00805F499D93'
codebase='http://java.sun.com/products/plugin/autodl/jinstall-1_4_1-windows-i586.cab#Version=1,4,1,0'
width='384' height='270' id='c64'>
<param name=code value='C64Applet'>
<param name=archive value='c64.jar'>
<param name=codebase value='/c64/'>
<param name='doubleScreen' value='0'>
<param name=type value='application/x-java-applet;version=1.4.1'>
<param name='scriptable' value='true'>
<COMMENT>
<embed
type='application/x-java-applet;version=1.4.1'
name='c64'
code='C64Applet'
codebase='/c64/'
archive='c64.jar'
width='384'
height='270'
doubleScreen='0'
autostartPGM='games/ARKANOID.PRG'
scriptable='true'
pluginspage='http://java.sun.com/products/plugin/index.html#download'
alt='Your browser understands the <EMBED> tag but is not running the Java Applet, for some reason.'>
<noembed>
Your browser is completely ignoring the Java Applet!
</noembed>
</embed>
</COMMENT>
</object> This example autostarts the game Arkanoid in the file ARKANOID.PRG (in the folder /c64/games/). No double screen mode and applet size is 384x270. Applet Parameters Parameter
Name | Value
*=default | Description | | doubleScreen | 0*/1 | double the size of the generated C64 screen | autostartDisk | string | URL to the disk or tapefile (.d64/.t64) to load from | | autostartPGM | string | 1 name of the file on disk/tape given with disk, or
2 URL to file (.prg file) to load directly | | autostartProgram | string/int | same as above, except that it also can be used for starting a game in the games.txt file (by giving its index). If giving "random" as name, this will load a random program from the games.txt file | | colorset | 0*/1/2/3 | different colorsets, 0 - default old JaC64 colors, 1/2/3 - other more c64 near colorsets. | | joystick | 0*/1 | select joystick | | soundOn | 0/1* | sound on if 1, off if 0. |
Javascript callsThere are a lot of useful Java methods that can be called from Javascript to script the applet. Some of the most important are: | Method | Description | | reset() | resets the emulator | | setSoundOn(true/false) | controls if sound should be on or off | | setStick(0/1) | controls if stick 1 or 2 should be emulated | | loadPGM(Filename) | loads a program file directly | | loadPGM(Disk, Filename) | loads a program file from a specified disk |
Typical usage is to add a link with a javascript call on, an example (where the applet is called c64):
<a href=javascript:document.c64.reset()>Reset</a>
Download! The JaC64 emulator can be downloaded from here: jac64_1b3.zip 
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