A NES musicdisk (256kB MMC1)

An electronic  christmas card from me (40kB NROM PAL)

The  Chip Addiction demo. (40kB NROM) | source

Stuck in Castle Nessenstein. (40kB NROM PAL)
 

A VGM player (youtube)
 

A "boss rush" hack for Ninja Gaiden. Let's you play only the boss stages.

A VGM player. Allows you to listen to SEGA Master System / Game Gear music on the Gameboy

Windows software v1.15 for the Smartboy cart (drivers + flashing client). Not written by me, but I recently needed to reinstall the SW and noticed that it wasn't available at the Smartboy website or pretty much anywhere else.

A chiptune player for the Gamecube (youtube)

A VGM player. Allows you to listen to SEGA Master System / Game Gear music on the NGPC. Source code included. (youtube)

A TLCS-900/H prefetch instruction queue test. Source code included.
 

A data bus test suite. Source code included.

An IMA-ADPCM decoding demo. (youtube)

An YM player. (youtube)

 A VGM to HES converter. Can also convert to a standard ROM file (.pce). The source for the HuC6280 playback code is included.

An NSF player. Allows you to listen to NES/Famicom music on the TGX/PCE

A  native SPC player (75 kB) | more info
 

An updated menu for the NEO SNES Myth cart | google code repo

 
A code optimizer for use with the snes-sdk

 
A VGM to SPC converter. The source for the S-SMP playback code is included.

A musicdisk containing music from various Sega MasterSystem / GameGear games. Uses my VGM playback code

A flag effect (8kB) | source

Some old-school effects (12kB)

A demo of a flatshaded cube (21kB)

Some rotating 3D letters (22kB)

A tiny VDP2 demo (4kB) | Dual SH2 version

A fire effect in 312 bytes (4kB)

Demo of executable compression on the Saturn (251kB)

A Gouraud shading test 

A mesh processing test 

A plasma effect 

An example of using the SH2's two-way cache mode to get 2kB of internal RAM. Doesn't work in yabause as of 0.9.7, hence the incorrect screenshot

An example of JPEG decoding on the Saturn. Includes a prebuilt version of libjpeg (here are the sources for the library)
 

An example of PNG decoding on the Saturn. Includes prebuilt versions of libpng and zlib (here are the sources for the libraries)

An NSF player for the 32X. (674kB) (youtube)

A YM player for the 32X. (90kB)
 

A SID player for the 32X. (190kB) (youtube)

A fire effect for the 32X. Source code is included (11kB)
 

A simple example of programming the 32X in C. Source code is included (12kB).
Assembly version

A small 3D demo. Source code is included (184kB).

A Gameboy emulator for the 32X (32kB).
 

An example of JPEG decoding on the 32X. Includes a prebuilt version of libjpeg (here are the sources for the library)

An example of PNG decoding on the 32X. Includes prebuilt versions of libpng and zlib (here are the sources for the libraries)

A small Megadrive demo inspired by Keroro Gunso (27kB)

A VGM player with GD3 and multisong support (113kB)

My entry in the SMSPOWER 2009 compo (19kB)