JaC64/How to Use
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Written by Joakim Eriksson
Thursday, 19 August 2004
Using JaC64[Bearbeiten | Quelltext bearbeiten]
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 image for 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 JaC64[Bearbeiten | Quelltext bearbeiten]
If 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[Bearbeiten | Quelltext bearbeiten]
Parameter Value Description Name *=default 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.
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
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