3 VIEWERS
Viewers are plugins which are associated with specific file extensions. So you can't
execute the plugin directly, but “play" the associated file.

3.1 CHIP-8 EMULATOR (RECORDER ONLY)

The Chip-8 Emulator allows you to play many old chip8 games found on the Net. It
modifies Rockbox, so file extensions .ch8 will be recognised as chip8 games. Just
press PLAY on a .ch8 file to start a game.
There are lots of tiny Chip8 games (usually only about 256 bytes to a couple of KB)
which were made popular by the HP48 calculator's emulator for them. The original
Chip8 had 64x32 pixel graphics, and the new superchip emulator supports 128x64
graphics, which could almost fit on the Jukebox recorder's display. The only problem is
they are based on a 4x4 keyboard, but since most games do not use all of the
buttons, that could easily be worked around.
Some places where can you can find .ch8 files:
The original chip8 patch had several attached:
http://sourceforge.net/tracker/index.php?func=detail&aid=628509&group_id=4430
6&atid=439120
Check out the HP48 chip games section: http://www.hpcalc.org/hp48/games/chip/
Check out the PC emulator by the guy who wrote the HP48 emulator:
http://www.pdc.kth.se/~lfo/chip8/CHIP8.htm
Links to other chip8 emulators:
http://www.zophar.net/chip8.html

3.2 JPEG VIEWER (RECORDER ONLY)

Press PLAY on a .JPG or .JPEG file in order to view the contents using Rockbox's
greyscale library. Use the arrow keys to move around the image, PLAY to zoom in
and ON to zoom out. Press OFF to exit the viewer.
Note: JPEGs that use progressive scan encoding are not supported and will produce an
error.

3.3 MOVIE PLAYER (RECORDER ONLY)

Play movies on your Jukebox! In order to do this, movies must be in AVI format, and
then converted to .RVF, Rockbox's own video format. For more details on how to use
this plugin, please see http://rockbox.haxx.se/twiki/bin/view/Main/VideoTutorial.

3.4 ROCKBOX-FLASH (RECORDER ONLY)

For "playing" .UCL files on flashed Jukeboxes. Reprograms the flash memory of the
Jukebox unit (see page 74 for details).
54 Rockbox User Manual