I recently (today as a matter of fact ;D) made a psp replay routine for my softsynth tracker program available here:

http://protrekkr.googlecode.com/

The tracker is tailored for much faster machines so this is more an experiment than anything else.

If you intend to use it to create music for the PSP you'd better go very easy on the dsp effects and channels polyphony, especially the flanger fx is a really heavy toll because the media engine doesn't have any integrated hardware sin/cos or pow instructions.

The replay routine of the tracker uses the 2nd processor so the occupation time of the main CPU is really minimal.

Samples depacking with the PSP codecs isn't implemented yet (so samples packing should be set to "none" in that case).

The tracker itself is open source and available on Windows, Linux and Mac OS X.

v1.90 released:

Quote:

- Added a scrollbar beside patterns.
- The tracker can now load all these .wav file formats (mono or stereo) :
- 8-bit integer.
- 12-bit integer.
- 16-bit integer.
- 24-bit integer.
- 32-bit integer.
- 32-bit float.
- 64-bit float.
- Added an option to render a module as 32 bit (float) .wav file.
- Inverted the right and left mouse buttons functions in patterns.
- Fixed an issue with the loop editor.
- Patterns now automatically scroll when using the right mouse button (also work when selecting a block).
- Added multi notes channels, they can be used to trigger several notes / track at the same time in order to make chords or to play several instruments in the same track and route them to the same row effect / dsp effect (thus allowing to considerably reduce the dsp usage and also introduce some modularity which could be useful, especially for the PSP replay).
Note that these channels are shared with the polyphony ones.
- Improved volume ramping.
- Keys repeat was disabled when editing note columns.
- Added LCTRL+TAB and LCTRL+LSHIFT+TAB to cycle through the notes of a track.
- Added LALT+A and LALT+LSHIFT+A to select one or all notes/instruments columns of a track.
- Modified the record function (for a better one, i hope).
- Some edition commands weren't working on last track.
- Midi channels polyphony implemented.
- Improved Mac OS X keyboard handling a bit.
- Compressor wasn't set right when loading .ptp files.

The game is a typical action platform game. It´s based in the Turok´s games what it appear in game boy/game boy color. The demo is short less than five minutes and in it I show how will be the final game.

--------------------------------------------
Wii2600 v0.1 release README
--------------------------------------------

Ported by raz0red
[http://www.twitchasylum.com]

--------------------------------------------
What is Wii2600?
--------------------------------------------

Wii2600 is a port of the Stella 2.7.2 emulator to the Wii.

Stella is a multi-platform Atari 2600 VCS emulator released under the GNU
General Public License (GPL). Stella was originally developed for Linux by
Bradford W. Mott, however, since its original release several people have
joined the development team to port Stella to other operating systems such
as AcornOS, AmigaOS, DOS, FreeBSD, IRIX, Linux, OS/2, MacOS, Unix, and
Windows. [http://stella.sourceforge.net].

--------------------------------------------
Current status
--------------------------------------------

Wii2600 is an ongoing work in progress. For the latest project information
please visit the following URL:

[http://www.wiibrew.org/wiki/Wii2600]

--------------------------------------------
Known issues
--------------------------------------------

Wiimote paddle support is a proof of concept at this point and as such is a bit
buggy. The range of motion is currently very small. You must have the Wiimote
aligned directly with the sensor bar.

--------------------------------------------
Installation
--------------------------------------------

To install Wii2600, simply extract the zip file that this README was
distributed with directly to your SD card (retain the hierarchical structure
exactly).

Cartridge images should be placed in the roms directory (wii2600/roms).

--------------------------------------------
Tearing, Vertical Sync, PAL/NTSC, etc.
--------------------------------------------

Without the use of Vertical Sync, 2600 games that scroll (Barnstorming, River
Raid, etc.) will exhibit tearing during game play.

The first time Wii2600 is started it attempts to determine whether your Wii is
running in PAL (50hz) or NTSC/PAL60 (60hz) mode. Based on this determination it
sets a default value for Vertical Sync.

NTSC/PAL60:

If Wii2600 determines you are in NTSC/PAL60 mode (60hz) it enables Vertical
Sync by default. This should work well for both NTSC and PAL games. PAL games
run fine due to the fact that they run at a slower rate than NTSC.

PAL:

If Wii2600 determines you are currently in PAL mode (50hz) it disables Vertical
Sync by default. The reason it disables this setting is to be compatible with
both PAL and NTSC games at 100% speed. Since the Wii console is syncing at 50hz
it won't be able to maintain the required 60hz for NTSC games and as a result
you will get garbled sound and slow video.

If you still want to use Vertical Sync, you can enable it via the "Advanced"
menu in Wii2600. PAL games will run as they were intended, 50hz at 100% speed.
Wii2600 also configures another setting "Force FPS" to "50 FPS" when you enable
Vertical Sync in PAL mode. What this setting does is control the frame rate
that games run at. Essentially what it will do is force all games (NTSC or
PAL) to run at 50 FPS. In doing so it also adjusts audio buffer sizes, etc. so
that you won't experience garbled sound. The downside is that NTSC games will
now run at 50 FPS versus their intended 60 FPS, so the games will run a bit
slower.

The real answer to resolve these issues is to add auto-frame skipping to
Stella. That is definitely something I will be looking to add in an upcoming
release.

--------------------------------------------
Controls
--------------------------------------------

Wii2600 menu:
-------------

Wiimote:

D-pad : Scroll
A : Select
B : Back
Home : Exit to Homebrew Channel
Power : Power off

Classic controller:

D-pad : Scroll
A : Select
B : Back
Home : Exit to HBC

GameCube controller:

D-pad : Scroll
A : Select
B : Back
Z : Exit to Homebrew Channel

Stella emulator menu:
---------------------

Unfortunately, at this point all navigation of the Stella menu is done via
the Wiimote without the use of motion controls. Thus, the '+' and '-'
buttons allow for tabbing through the different controls. Pressing the 'A'
button operates the current control, etc.

Wiimote:

+ : Move forward through controls
- : Move backward through controls
Up/Down : Scroll (when focused on a list or slider, etc.)
Left/Right : Page through list (when focused on list control)
Left/Right : Move between tabs (when focused on a tab in a dialog)
A : Operates current control (presses button, launch rom)
B : Closes current dialog
Home : Exit to Homebrew Channel

Classic controller:

+ : Move forward through controls
- : Move backward through controls
R Trigger : (Alternate) Move forward through controls
L Trigger : (Alternate) Move backward through controls
Up/Down : Scroll (when focused on a list or slider, etc.)

Double Dash Wii is a Boulder Dash Clone for the Wii

Tested on PAL (Supports widescreen), NTSC untested (please report!)